volume 7, number 1 spring 1996 - mosquito · lehigh, fl 33971 editor-in-chief ... john gamble, new...
TRANSCRIPT
of the Florida Momiddotsquito Control Association
Volume 7 Number 1 Spring 1996
PO Box 60005
Fort M yers FL 33906
15191 Ho mestead Rd Lehigh FL 33971
Editor-in-chief Dennis Moore Fort Myers FL voice 941-694-2174 fax 941-693-5011
Managing Editor Charl ie Morris Vero Beach FL 407-778-7204 (voice or fax)
Associate Editors John Gamble New Smyrna Beach FL Mary Peery Vero Beach FL
G ra phics Charlie Morri s Vero Beach FL Bonnie Pallok Vero Beach FL Alan Curtis Vero Beach FL
Column Edit01middots Biosynopsis - Dr Charles Apperson Raleigh NC Chemline- Doug Wassmer Odessa FL Chip Chat- Thomas Floore Panama City FL Crankcase Eddie - Ed Meehan Mound MN Fly Wheels- Jam es Robinson Odessa FL Going Public- Kellie Etherson Gainesv ille FL Natures Way- Dr Eric Schreiber Panama City FL Vector Bearings - Dr Donald Shroyer Vero Beach FL
Regional Editors New Jersey - Wiilliam C Re inen Northfield NJ
li toria l Review Board Alan Curtis Vero Beach FL Dr David Dame Gai nesv ille FL Jerry Hutney Tampa FL Dr L Philip Lounibos Vero Beach FL
Florida Mosquito Control Association Elisabeth Beck Execu tive Director
lO Box 11 867 Jacksonville FL 32311 voice 904-743-4482 fax 904 -743-6879
FMCA 1995-1996 Board of Directors President
W Gene Baker Tall ahassee FL President-elect
G Alan Curtis Vero Beach FL Vice-President
Dr David Dame Gai nesv ille FL Immed iate Past President
Robert Wa rd Safe ty Harbor FL Northwest Regional Representative
Joseph P Ruff Panama City FL Northeast Regional Representative
Richard Smith Jack sonvi lle FL Sou tbwest Regional RepresentaMve
William R Opp Fort Myers FL Southeas t Regional Represen tative
Gregory Scoll Key West FL
of the Florida Mosquito Control Association Volume 7 Number 1 Spring 1996
Contents
Feature Wing Beats Anew 5 by w_ tjeste ~
Biosynopsis The Dark Pasture Mosquito Aedes nigromaculis 8 byS~S~
Industry Beat Cheminova Sandoz amp Thomson 10
Partial Index to Articles in Wing Beats 1990-1995 11
Crankcase Eddie Memphis Belle 12 byampd~
Letters to the Editors 16 from tjeste ~- PhD Drulaquo ~ amp flok ~
Program Profiles Paradise Gained 18 by~ D 71tltwzu PhD
Field Forum Pumping System Accuracy 19 by P~ R~ PhD
Opportunities 23
Wing Beats Published quarterl y by the Florida Mosquito Control Associa ti on T his magazine is intended to keep a ll interested parties informed on matters as they related to mosquito control part icularly in the United States AJI rights reserved Re production in whole or part for educational purposes is permitled without permission with proper citation
The Florida Mosquito Control Association has not tested any o f the products dvertised or re ferred to in this publication uor has it verified any o f the statements made in any of the advertisements o r articles T he FM CA does not warrant ex pressly or implied tbe fitness o f any product advertised o r the su itabilit y of a ny advice o r sta teme nts contained herein Opinions expressed in this pub licatio n are not necessaril y the opinions or policies of the Florida Mosqu ito Control Associaiton
Corresponden ce Address all correspondence regarding Uf ampau to the Editor-in-Chief Dennis Moore PO
Box 60005 Fort Myers FL 33906 Readers are invited to submit art ic les re la ted to mosquito and biting fly biol ogy and control or lellers to the Editors to the Editor-in-Chief There is no charge if your article or leller is printed Photographers and artists are in vited to submit color transparencies or high quality original artwork for possible use in the magazine or on the cover $100 will be paid for each cover photo Businesses are invited to place advertisements through the Editor- in -Chief
About the Cover Computer graph by Bonnie Pattok Florida Med ical Entomology Laboratory University o f Florida Vero Beach
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variety of formulations with up to 150 days of larvicidal control Just think how cost-effective it will be to spend
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For complete details ~Aitasidreg call 1-800-2 48-77 63 today The smart way to fight mosquitoes
amp SANDOZ Alwnys read the label before using the product Sandoz Agro Inc 1300 E Touhy Ave Des Plaines IL 60018 Altosid is a trademark of Sandoz Ltd copy1995 Sandoz Agro Inc
Wing Beats
Changes in Wing Beats
With this issue Wing Beats enshyters a new era First Dennis Moore of the Lee County Mosshyquito Control District in Ft Myers Florida is the new Editorshyin-Chief Founding Editor-inshyChief Dr Charlie Morris of the Florida Medical Entomology Lab of the University of Florida is now the Managing Editor Dennis will work with Advertisers Column Editors Regional Editors and a newly established Editorial Reshyview Board to find new articles and determine the content of each issue Charlie will do the layout nanage the mailing list and work Nith the printer distributor and authors There has also been a change in the policy regulating the distribution of the magazine
Benefits of Changes
These changes have several positive outcomes First the cost to produce the magazine will be less than when layout and advershytiser solicitation were done by contract Eliminating the profit component of production allows us to lower advertiser rates for companies that are sustaining members of the FMCA and for advertising in all four issues in a calender year Second Wing Beats will be distributed free of charge via bulk mail to anyone in the United States wishing to receive it The sole purpose of the magazine is as an educational document here is no requirement to be a
member of any organization to receive it Subscriptions are avail-
Anew able to foreign addresses for the cost of first class mailings
Because of the change in distribution policy the number of people receiving the magazine has increased from 1800 for the last issue to 3000 for this issue This is because 18 state and reshygional mosquito control associashytions have opted to have their membership receive Wing Beats A membership that by-in-large was ineligible to receive the magazine in the past Is your mosquito control association listed on the accompanying sidebar
A National Magazine
Wing Beats has always been a national publication though it was produced by the Florida group While there have been many articles in the magazine from authors outside Florida and the US we have only two editors outside Florida One is Dr Charles Apperson of the U of North Carolina who has edited the Biosynopsis column since its conception The other a newshycomer is Bill Reinert of New J ershysey our first Regional Editor This letter is an open invitation for anyshyone who is interested in becoming either a Column Editor for a new coluqm or a Regional Editor to get in touch with us Through the Regional Editors we hope to inshycrease the number of articles writshyten by non-Florida mosquito conshytrollers and thus get a complete picture of mosquito control in the United States If we have 10 or 12 Regional Editors each would only
need to find one article a year and they don t have to write it themshyselves
Mosquito Control Associations amp Groups Receivfng Wing Beats
--~------middot----~ middot-Alabama VMCA American MCA
California MVCA Extension medical
entornoloigsts Florida MCA
Georgia MCA Illinois MVCA
Mid-Atlantic MCA middot Mississippi MVCA
Nevada MCA New Jersey MCA New Mexico MCP Northeast MCA Northwest MCA North Carolina OhioMCA
South Carolina MCA Tennesee Valley Authority
Texas MCA Utah MAD
Virgima MCA
New Recipients of TNing Beats
If you are receiving Wing Beats for the first time we hope you will take the time to continue reading this issue to determine if you want to continue receiving it There is a partial index of articles middot which appeared in the first six volumes of Wing Beats listed on
Continued on page 6
Spring 1996 11~ 2e4U 5
Continued from page 5
pages 11 and 20 of this issue to help you decide if this magazine is for you Limited copies of past issues are available on request and we will happily photocopy specific articles and send them to you again at no cost
In the next (Summer) issue of Wing Beats which will arrive about June new recipients will receive a cover letter asking them to return a form if they want to continue receiving the magazine Only those who return the form will get the Fall 1996 and future issues of the magazine However if you initially decide not to get the magazine and then change your mind or forget to send in your form you are welcome to reactivate your name on the mailshying list anytime Again there is no charge to receive Wing Beats We ask you to verify that you want to receive the magazine to help us minimize production and distribution costs
The Wing Beats mailing list is confidential It is not the intent of the FMCA to make the mailing list available to anyone or any orshyganization seeking to sell services or merchandise
Open Mailing List
If you know anyone who is not receiving Wing Beats and may be interested in doing so please send us those names and mailing adshydresses
Advertisements and Advertisers
Advertisers in Wing Beats are paying the printing and distribushytion costs for the magazine The rest is done by the volunteers listed on page 3 of this issue If you like Wing Beats and wish to see it continue please thank our
6 II~ ampau Spring 1996
advettisers when you talk to them next
We would especially like to thank Adapco Inc Lowndes Enshygineering Co Inc London Fog Inc Valent VecTec Inc and ZoeconSandoz who are charter advertisers in Wing Beats and have advertized in every issue to 23 to date in the past six years We also thank Beecomist Sysshytems Clarke Mosquito Control Products Inc Curtis Dyna Prodshyucts Chemical Containers and American Cyanamid for their continuing support
We are also very pleased that Isolair Bioquip Southwest Asshysurance and Spray Tech Inc have joined our growing list of supporters If you don t see your local distributor or a manufacshyturer that you deal with advertisshying in the magazine we ask you to encourage them to do so The more advertisers we have the more the magazine can be imshyproved and the more we can reshyduce ad rates
If you are on the commercial side of mosquito control consider ~ the fee schedule accompanying this article as you plan your fu-ture advertising strategy Those numbers are likely to grow as word of the availability of the magazine for free gets out
Contact Person
If you want to get on the Wing Beats mailing list (thats right no charge for US addresses) conshytribute to Wing Beats as a Column or Regional editor advertise or want any additional information regarding the magazine please write Dennis Moore Editor-inshyChief Wing Beats PO Box 60005 Ft Myers FL 33906 Better yet give him a call at 941-694-2174 or fax him at 941-693-5011 We look forward to hearing from you and your joining our effort to advance the cause for a better-informed mosquito control industry
Ad Rates for Wing Beats for 1996
Full Price
Full page blackwhite $67500
Half page blackwhite 46000
Full page 2-color 82500
Full page 4-color 97000
Advertise in all 4 Ad in 4 issues plus issues in a year FMCA Sustaining
Industry Member
57375 47250
39100 32200
70125 57750
82450 67900
r ~
middotGene Baker is the President pf the Florida Mosquito Control ~
Association and Director bf the middot Le~nmiddot CountyMosquito Control J Program in Talla~assee Florida
DIBROMreg Concentrate provides fast consistent knockdown of adult mosquitoes
DIBROM Concentrate will effectively control your large-area mosquito problems whether its residential areas and municishypalities tidal marshes swamps and woodshylands or livestock pastures and feedlots
DIBROM is a fast-acting short residual
organophosphate insecticide that is proven effective against the most tolerant and resistant strains of mosquitoes
By using DIBROM as labeled you wont affect fish wildlife or livestock so its environmentally compatible It can easily be applied by ground or air and its low application rate gives significantly more coverage per tankload
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The Dark Pasture Mosquito
IMPORTANCE
Aedes nigromaculis (Ludlow) is a fierce biter and was once the principal pest species throughou~ most of the Central Valley of Cahshyfornia Although it has not been incriminated as a disease vector laboratory experiments show it is capable of transmi~ting s~veral arthropod-borne vuuses mcludshying western equine encephal~~yshyelitis and California encephahhs It was the first mosquito in Calishyfornia to develop resistance to DDT and by the 1970s had beshycome resistant to most organoshyphosphate and organochlorine insecticides Once extremely abundant populations of Ae nigromaculis in California have declined since the late 1970s pershyhaps due to improved water manshyagement practices
[ GEOGRAPHIC DISTRIBUTION )
The range of Ae nigromaculis covers most of the United States west of the Mississippi River north to Manitoba and south to Central Mexico This species was unknown in California prior to 1937 but quickly spread and beshycame the predominant pasture mosquito throughout much of the Central Valley
[ IDENTIFICATION
Larvae have a complete saddle uneven pecten row and the si- phon tuft inserted towards the tip of the siphon Adults have tarsal segments basally ringed with white scales and often a pale me dial ring on the proboscis Aedes
8 U~ geaf4- Spring 1996
Aedes nigromaculis
mgromaculis is considered closely related to Ae sollicitans (Walker) the eastern salt marsh mosquito although no natural hybrids have been reported
[ IMMATURE BIOLOGY
Before human development changed the landscape Ae nigromaculis probably bred m temporary rain pools However as its name implies 1t IS now tJpishycally associated with temporanly flooded irrigated pastures Eggs are commonly laid on clumps of bunch grass A small percentage of eggs require se~eral floodmg and drying cycles m order to hatch Completion of developshyment typically takes six to ten days but can take as little as f~ur days when temperatures are h1gh
Aedes nigromaculis is often found in association with Ae melanimon Dyar The two species differ slightly in their salinity and temperature t~lerance s~ch th~t Ae nigromaculzs predommates m water of somewhat lower salinity during the warm midsummer months and Ae melanimon preshydominates both earlier and later in the season Aedes nigromaculis is able to exploit more ephemeral habitats than Ae melanimon due to ~ somewhat faster developshyment rate
(~~~A~o_uL_T_B_E_H_A_VI_O~R--~) Males emerge before females
and form mating swarms at dawn and dusk Most flight activity
also occurs at dawn and dusk Aedes nigromaculis does not mate willingly in captivity s~ la~orashytory colonies can be ma1~1tamed only by induced copulation
( BLooomiddot FEEDING )
Host preference studies show that Ae nigromaculis feeds preshydominantly on cattle and to a lesser extent on birds dogs horses humans and sheep Feshymales rna y f1 y several miles for a blood meal and readily disperse from breeding habitats in to populated areas when hosts ~re not available nearby Mass disshypersals of 20 to 30 mil~s have been reported This mosqmto IS
known as a vicious day and dusk biter Most females take a blood meal within four days of emershygence-and oviposit about two days after feeding
SEASONALITY
In California Ae nigromaculis is active from April or May through October with as many as 10 generations per seaso~ Peak adult populations occu m July and August This speoes overshywinters as embryonated eggs with diapause apparently trigshygered by decreasing tempe~atures in the fall and is broken by Inshy
creasing temperatures in the spring
Steve Schutz is an fntomologist with the Contra Costa Mosquito and Vector Control District in
Concord California
PURE AND SIMPLE Pump FYFANON ULV directly from our drum to your tank It goes in undiluted - eliminates the potential for costly mixing errors and reduces employee chemical exposure In the new returnable refillable container FYFANON also eliminates triple rinsing and container disposal- What could be easier
Todays FYFANON ULV is better than ever- 96-98 pure and less acutely toxic than resmethrin permethrin fenthion or naled
FYFANON saves you time money and labor Do the math and youll see- FYFANON covers more acres for fewer dollars than any
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((I CHEMINOVA
FOR ADULT MOSQUITO CONTROL
Cheminova Inc bull 1700 Route 23 bull Suite 210 bull Wayne 1Jew Jersey 07470 bull 800-548-6113
r
IMDllSTJY BEJtT
Cheminova Sandoz and Thomson
Sandoz Appoints Sean Lynch
Sandoz Agro Inc recently apshypointed Sean Lynch as Marketing Services Associate in Sandozs Professional Pest management Division
Lynch will be responsible for managing public relations prodshyuct promotions market research advertising trade shows literashyture fulfillment and direct marketshying The division produces Teknar and Altosid for the control of mosquitoes
Before joining the marketing services department Lynch was a field sales representative for Sandozs Turf amp Ornamental products division
Lynch is a graduate of the Philadelphia College of Textiles and Science where he majored in marketing and minored in fishynance He is a native of Audubon NJ
10 3fUet ~eaU Spring 1996
Thomson Publications of Fresno California has just reshyleased the 1996 Insecticide Herbishycide Fungicide Quick Guide
In the Guide the pesticides are cross-referenced to registered usshyage and by the pests that each mashyterial will control This enables the user to make a general recomshymendation on which material to use in each situation
It sells for $1850 plus tax To order write Thomson publicashytions PO Box 9335 Fresno Calishyfornia 93791 call (209) 435-2163 or FAX (209) 435-8319
Please note the changes in the Cheminova distributor territory map below All bids and product inquiries should be directed to the distributor covering your location
bull Adapco Inc (800) 367-0659
ft Corn belt Chemical v (800) 652-9306
A Northeast Vector Management v (800) 331-7240
ft Van Waters amp Rogers IV (800) 888-4VWR
(iiCHEMINOVA Cheminova Inc 1700 Route 23 Suit9 210 Wayne New Jersey 07 470 800-548-6113
Pro-Mist UL V Sprayers
A Different
Breed Of
Sprayer All Electric bull Ultra Quiet Light Weight bull Modular
Rugged bull Chemically Efficient
FACTORY DIRECT
Beecomist SALES amp SERVICE
Beecomist Systems 3255 Meetinghouse Rd bull Telford PA bull 18969 USA
IN US 800-220-0787 OTHER CALLS 215-721-9424
FAX 215-721-0751
Partiallndex to Articles in Wing Beats
1990 -1995 bull _
Biosynopsis
The Asian Tiger Mosquito Aedes abop ictus Robert Novak Fall1992
The Eastern Saltmarsh Mosquito Aedes sollicitans George F OMeara Winter 1992
The Eastern Treehole Mosquito Aedes triseriatus Ned Walker Summer 1992
The Inland Floodwater MosquitoAedes vexans Susan Palchick Spring 1992
The Western Malaria Mosquito Anopheles freebomi Robert Washino Fall1993
The Quads Anopheles quadrimaculatus Say Paul Kaiser Fall1994
The House Mosquitoes of the USA Culex pipiens complex Harry Savage and Barry Miller Summer 1995
The Western Encephalitis Mosqui to Culex tarsalis William Reisen Summer 1993
The Dark Rice field Mosquito Psorophora columbiae Max Meisch Spring 1994
The Carnivores Toxorhynchites Carl J Jones and Eric Schreiber Winter 1994
Chemline
Adulticides in the 90s- The Changing Picture Carlisle B Rathburn Jr Winter 1990
AerialBti Applications Guy Faget Paul Perdew and Matthew Yates Winter 1992
Confusion in Margalitaville Doug Wassmer Winter 1995
Flashpoint- Fire point- Blastpoint Ed Meehan Winter 1992
Integrated Mosquito Management Henry R Rupp Fall1995
Mosquito Larvicides in the 90s- Status Quo Carlisle B Rathburn Jr Spring 1992
Relative Activity Measurements are the Best Guide toBti Selection Brian Melin Winter 1995
_ _
UL V Flushing Agents Thomas P Breaud and James R Brown Fall 1993
Chip Chat
Electronic Droplet Ana lysis Thomas G Floore and James R Brown Winter 1991
Flight Guidance Recording amp Analysis for Aerial Application Bill Reynolds Mark La tham and Joe Ruff Fall 1995
GIS A New Tool for Mosquito Control William G Guthe Spring 1993
Probe It Tom Floore Summer 1993
Crankcase Eddie
Storing a Two-Cycle Engine Ed Meehan Winter 1993
Faces
New Jerseys Mosquito Queen Judy A Hansen -Jim McNelly Fall1992
T Oscar Fultz Jr A Gentle Man Nancy Lavender Parsons Winter 1991
Women in Mosquito Control Kellie Etherson Spring 1993
Feature
Fatal Attraction for Blood Seekers Jonathan F Day Winter 1990
Flight D Scott Taylor Spring 1995
Macrophotography Admiring the Mosquito Microcosm LE Munstermann Winter 1991
Mosquito and Vector Control Where Do We Go from Here Bruce F Eldridge Winter 1994
Mythical Mosquito Control Lee Mitchell Summer 1992
Planning for Emergency Mosquito Survei lshylance and Control
Continued on page 20
Spring 1996 UI~ 2eatt 11
(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
Ed Meehan operates out of 1220 7th Ave POB9x218 Howard
Lake MN 55349
~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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Letter-sect t() the ~dit()r-sect
I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
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Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
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Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
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AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL
PO Box 60005
Fort M yers FL 33906
15191 Ho mestead Rd Lehigh FL 33971
Editor-in-chief Dennis Moore Fort Myers FL voice 941-694-2174 fax 941-693-5011
Managing Editor Charl ie Morris Vero Beach FL 407-778-7204 (voice or fax)
Associate Editors John Gamble New Smyrna Beach FL Mary Peery Vero Beach FL
G ra phics Charlie Morri s Vero Beach FL Bonnie Pallok Vero Beach FL Alan Curtis Vero Beach FL
Column Edit01middots Biosynopsis - Dr Charles Apperson Raleigh NC Chemline- Doug Wassmer Odessa FL Chip Chat- Thomas Floore Panama City FL Crankcase Eddie - Ed Meehan Mound MN Fly Wheels- Jam es Robinson Odessa FL Going Public- Kellie Etherson Gainesv ille FL Natures Way- Dr Eric Schreiber Panama City FL Vector Bearings - Dr Donald Shroyer Vero Beach FL
Regional Editors New Jersey - Wiilliam C Re inen Northfield NJ
li toria l Review Board Alan Curtis Vero Beach FL Dr David Dame Gai nesv ille FL Jerry Hutney Tampa FL Dr L Philip Lounibos Vero Beach FL
Florida Mosquito Control Association Elisabeth Beck Execu tive Director
lO Box 11 867 Jacksonville FL 32311 voice 904-743-4482 fax 904 -743-6879
FMCA 1995-1996 Board of Directors President
W Gene Baker Tall ahassee FL President-elect
G Alan Curtis Vero Beach FL Vice-President
Dr David Dame Gai nesv ille FL Immed iate Past President
Robert Wa rd Safe ty Harbor FL Northwest Regional Representative
Joseph P Ruff Panama City FL Northeast Regional Representative
Richard Smith Jack sonvi lle FL Sou tbwest Regional RepresentaMve
William R Opp Fort Myers FL Southeas t Regional Represen tative
Gregory Scoll Key West FL
of the Florida Mosquito Control Association Volume 7 Number 1 Spring 1996
Contents
Feature Wing Beats Anew 5 by w_ tjeste ~
Biosynopsis The Dark Pasture Mosquito Aedes nigromaculis 8 byS~S~
Industry Beat Cheminova Sandoz amp Thomson 10
Partial Index to Articles in Wing Beats 1990-1995 11
Crankcase Eddie Memphis Belle 12 byampd~
Letters to the Editors 16 from tjeste ~- PhD Drulaquo ~ amp flok ~
Program Profiles Paradise Gained 18 by~ D 71tltwzu PhD
Field Forum Pumping System Accuracy 19 by P~ R~ PhD
Opportunities 23
Wing Beats Published quarterl y by the Florida Mosquito Control Associa ti on T his magazine is intended to keep a ll interested parties informed on matters as they related to mosquito control part icularly in the United States AJI rights reserved Re production in whole or part for educational purposes is permitled without permission with proper citation
The Florida Mosquito Control Association has not tested any o f the products dvertised or re ferred to in this publication uor has it verified any o f the statements made in any of the advertisements o r articles T he FM CA does not warrant ex pressly or implied tbe fitness o f any product advertised o r the su itabilit y of a ny advice o r sta teme nts contained herein Opinions expressed in this pub licatio n are not necessaril y the opinions or policies of the Florida Mosqu ito Control Associaiton
Corresponden ce Address all correspondence regarding Uf ampau to the Editor-in-Chief Dennis Moore PO
Box 60005 Fort Myers FL 33906 Readers are invited to submit art ic les re la ted to mosquito and biting fly biol ogy and control or lellers to the Editors to the Editor-in-Chief There is no charge if your article or leller is printed Photographers and artists are in vited to submit color transparencies or high quality original artwork for possible use in the magazine or on the cover $100 will be paid for each cover photo Businesses are invited to place advertisements through the Editor- in -Chief
About the Cover Computer graph by Bonnie Pattok Florida Med ical Entomology Laboratory University o f Florida Vero Beach
Hits
Misses
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community Not the environment Definitely not you With Altosidreg products everyone wins Thats because
Altosid hits mosquitoes hard without harming non-target species By working specifically on fourth instar mosquito
larvae Altosid offers consistent highly effective control without disrupting the food chain Choose from a wide
variety of formulations with up to 150 days of larvicidal control Just think how cost-effective it will be to spend
less on labor equipment and adulticides
For complete details ~Aitasidreg call 1-800-2 48-77 63 today The smart way to fight mosquitoes
amp SANDOZ Alwnys read the label before using the product Sandoz Agro Inc 1300 E Touhy Ave Des Plaines IL 60018 Altosid is a trademark of Sandoz Ltd copy1995 Sandoz Agro Inc
Wing Beats
Changes in Wing Beats
With this issue Wing Beats enshyters a new era First Dennis Moore of the Lee County Mosshyquito Control District in Ft Myers Florida is the new Editorshyin-Chief Founding Editor-inshyChief Dr Charlie Morris of the Florida Medical Entomology Lab of the University of Florida is now the Managing Editor Dennis will work with Advertisers Column Editors Regional Editors and a newly established Editorial Reshyview Board to find new articles and determine the content of each issue Charlie will do the layout nanage the mailing list and work Nith the printer distributor and authors There has also been a change in the policy regulating the distribution of the magazine
Benefits of Changes
These changes have several positive outcomes First the cost to produce the magazine will be less than when layout and advershytiser solicitation were done by contract Eliminating the profit component of production allows us to lower advertiser rates for companies that are sustaining members of the FMCA and for advertising in all four issues in a calender year Second Wing Beats will be distributed free of charge via bulk mail to anyone in the United States wishing to receive it The sole purpose of the magazine is as an educational document here is no requirement to be a
member of any organization to receive it Subscriptions are avail-
Anew able to foreign addresses for the cost of first class mailings
Because of the change in distribution policy the number of people receiving the magazine has increased from 1800 for the last issue to 3000 for this issue This is because 18 state and reshygional mosquito control associashytions have opted to have their membership receive Wing Beats A membership that by-in-large was ineligible to receive the magazine in the past Is your mosquito control association listed on the accompanying sidebar
A National Magazine
Wing Beats has always been a national publication though it was produced by the Florida group While there have been many articles in the magazine from authors outside Florida and the US we have only two editors outside Florida One is Dr Charles Apperson of the U of North Carolina who has edited the Biosynopsis column since its conception The other a newshycomer is Bill Reinert of New J ershysey our first Regional Editor This letter is an open invitation for anyshyone who is interested in becoming either a Column Editor for a new coluqm or a Regional Editor to get in touch with us Through the Regional Editors we hope to inshycrease the number of articles writshyten by non-Florida mosquito conshytrollers and thus get a complete picture of mosquito control in the United States If we have 10 or 12 Regional Editors each would only
need to find one article a year and they don t have to write it themshyselves
Mosquito Control Associations amp Groups Receivfng Wing Beats
--~------middot----~ middot-Alabama VMCA American MCA
California MVCA Extension medical
entornoloigsts Florida MCA
Georgia MCA Illinois MVCA
Mid-Atlantic MCA middot Mississippi MVCA
Nevada MCA New Jersey MCA New Mexico MCP Northeast MCA Northwest MCA North Carolina OhioMCA
South Carolina MCA Tennesee Valley Authority
Texas MCA Utah MAD
Virgima MCA
New Recipients of TNing Beats
If you are receiving Wing Beats for the first time we hope you will take the time to continue reading this issue to determine if you want to continue receiving it There is a partial index of articles middot which appeared in the first six volumes of Wing Beats listed on
Continued on page 6
Spring 1996 11~ 2e4U 5
Continued from page 5
pages 11 and 20 of this issue to help you decide if this magazine is for you Limited copies of past issues are available on request and we will happily photocopy specific articles and send them to you again at no cost
In the next (Summer) issue of Wing Beats which will arrive about June new recipients will receive a cover letter asking them to return a form if they want to continue receiving the magazine Only those who return the form will get the Fall 1996 and future issues of the magazine However if you initially decide not to get the magazine and then change your mind or forget to send in your form you are welcome to reactivate your name on the mailshying list anytime Again there is no charge to receive Wing Beats We ask you to verify that you want to receive the magazine to help us minimize production and distribution costs
The Wing Beats mailing list is confidential It is not the intent of the FMCA to make the mailing list available to anyone or any orshyganization seeking to sell services or merchandise
Open Mailing List
If you know anyone who is not receiving Wing Beats and may be interested in doing so please send us those names and mailing adshydresses
Advertisements and Advertisers
Advertisers in Wing Beats are paying the printing and distribushytion costs for the magazine The rest is done by the volunteers listed on page 3 of this issue If you like Wing Beats and wish to see it continue please thank our
6 II~ ampau Spring 1996
advettisers when you talk to them next
We would especially like to thank Adapco Inc Lowndes Enshygineering Co Inc London Fog Inc Valent VecTec Inc and ZoeconSandoz who are charter advertisers in Wing Beats and have advertized in every issue to 23 to date in the past six years We also thank Beecomist Sysshytems Clarke Mosquito Control Products Inc Curtis Dyna Prodshyucts Chemical Containers and American Cyanamid for their continuing support
We are also very pleased that Isolair Bioquip Southwest Asshysurance and Spray Tech Inc have joined our growing list of supporters If you don t see your local distributor or a manufacshyturer that you deal with advertisshying in the magazine we ask you to encourage them to do so The more advertisers we have the more the magazine can be imshyproved and the more we can reshyduce ad rates
If you are on the commercial side of mosquito control consider ~ the fee schedule accompanying this article as you plan your fu-ture advertising strategy Those numbers are likely to grow as word of the availability of the magazine for free gets out
Contact Person
If you want to get on the Wing Beats mailing list (thats right no charge for US addresses) conshytribute to Wing Beats as a Column or Regional editor advertise or want any additional information regarding the magazine please write Dennis Moore Editor-inshyChief Wing Beats PO Box 60005 Ft Myers FL 33906 Better yet give him a call at 941-694-2174 or fax him at 941-693-5011 We look forward to hearing from you and your joining our effort to advance the cause for a better-informed mosquito control industry
Ad Rates for Wing Beats for 1996
Full Price
Full page blackwhite $67500
Half page blackwhite 46000
Full page 2-color 82500
Full page 4-color 97000
Advertise in all 4 Ad in 4 issues plus issues in a year FMCA Sustaining
Industry Member
57375 47250
39100 32200
70125 57750
82450 67900
r ~
middotGene Baker is the President pf the Florida Mosquito Control ~
Association and Director bf the middot Le~nmiddot CountyMosquito Control J Program in Talla~assee Florida
DIBROMreg Concentrate provides fast consistent knockdown of adult mosquitoes
DIBROM Concentrate will effectively control your large-area mosquito problems whether its residential areas and municishypalities tidal marshes swamps and woodshylands or livestock pastures and feedlots
DIBROM is a fast-acting short residual
organophosphate insecticide that is proven effective against the most tolerant and resistant strains of mosquitoes
By using DIBROM as labeled you wont affect fish wildlife or livestock so its environmentally compatible It can easily be applied by ground or air and its low application rate gives significantly more coverage per tankload
If youre looking for a solution to largeshyarea mosquito control look to DIBROM Concentrate Make sure they never get off the ground again
DIBROMreg CONCENTUTE AJways read and fo llow label direclio s DIBROM is a registered tradenarrlt ol Valent USA Corporalion copy1990 Valen USA Corp
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The Dark Pasture Mosquito
IMPORTANCE
Aedes nigromaculis (Ludlow) is a fierce biter and was once the principal pest species throughou~ most of the Central Valley of Cahshyfornia Although it has not been incriminated as a disease vector laboratory experiments show it is capable of transmi~ting s~veral arthropod-borne vuuses mcludshying western equine encephal~~yshyelitis and California encephahhs It was the first mosquito in Calishyfornia to develop resistance to DDT and by the 1970s had beshycome resistant to most organoshyphosphate and organochlorine insecticides Once extremely abundant populations of Ae nigromaculis in California have declined since the late 1970s pershyhaps due to improved water manshyagement practices
[ GEOGRAPHIC DISTRIBUTION )
The range of Ae nigromaculis covers most of the United States west of the Mississippi River north to Manitoba and south to Central Mexico This species was unknown in California prior to 1937 but quickly spread and beshycame the predominant pasture mosquito throughout much of the Central Valley
[ IDENTIFICATION
Larvae have a complete saddle uneven pecten row and the si- phon tuft inserted towards the tip of the siphon Adults have tarsal segments basally ringed with white scales and often a pale me dial ring on the proboscis Aedes
8 U~ geaf4- Spring 1996
Aedes nigromaculis
mgromaculis is considered closely related to Ae sollicitans (Walker) the eastern salt marsh mosquito although no natural hybrids have been reported
[ IMMATURE BIOLOGY
Before human development changed the landscape Ae nigromaculis probably bred m temporary rain pools However as its name implies 1t IS now tJpishycally associated with temporanly flooded irrigated pastures Eggs are commonly laid on clumps of bunch grass A small percentage of eggs require se~eral floodmg and drying cycles m order to hatch Completion of developshyment typically takes six to ten days but can take as little as f~ur days when temperatures are h1gh
Aedes nigromaculis is often found in association with Ae melanimon Dyar The two species differ slightly in their salinity and temperature t~lerance s~ch th~t Ae nigromaculzs predommates m water of somewhat lower salinity during the warm midsummer months and Ae melanimon preshydominates both earlier and later in the season Aedes nigromaculis is able to exploit more ephemeral habitats than Ae melanimon due to ~ somewhat faster developshyment rate
(~~~A~o_uL_T_B_E_H_A_VI_O~R--~) Males emerge before females
and form mating swarms at dawn and dusk Most flight activity
also occurs at dawn and dusk Aedes nigromaculis does not mate willingly in captivity s~ la~orashytory colonies can be ma1~1tamed only by induced copulation
( BLooomiddot FEEDING )
Host preference studies show that Ae nigromaculis feeds preshydominantly on cattle and to a lesser extent on birds dogs horses humans and sheep Feshymales rna y f1 y several miles for a blood meal and readily disperse from breeding habitats in to populated areas when hosts ~re not available nearby Mass disshypersals of 20 to 30 mil~s have been reported This mosqmto IS
known as a vicious day and dusk biter Most females take a blood meal within four days of emershygence-and oviposit about two days after feeding
SEASONALITY
In California Ae nigromaculis is active from April or May through October with as many as 10 generations per seaso~ Peak adult populations occu m July and August This speoes overshywinters as embryonated eggs with diapause apparently trigshygered by decreasing tempe~atures in the fall and is broken by Inshy
creasing temperatures in the spring
Steve Schutz is an fntomologist with the Contra Costa Mosquito and Vector Control District in
Concord California
PURE AND SIMPLE Pump FYFANON ULV directly from our drum to your tank It goes in undiluted - eliminates the potential for costly mixing errors and reduces employee chemical exposure In the new returnable refillable container FYFANON also eliminates triple rinsing and container disposal- What could be easier
Todays FYFANON ULV is better than ever- 96-98 pure and less acutely toxic than resmethrin permethrin fenthion or naled
FYFANON saves you time money and labor Do the math and youll see- FYFANON covers more acres for fewer dollars than any
- competing product
((I CHEMINOVA
FOR ADULT MOSQUITO CONTROL
Cheminova Inc bull 1700 Route 23 bull Suite 210 bull Wayne 1Jew Jersey 07470 bull 800-548-6113
r
IMDllSTJY BEJtT
Cheminova Sandoz and Thomson
Sandoz Appoints Sean Lynch
Sandoz Agro Inc recently apshypointed Sean Lynch as Marketing Services Associate in Sandozs Professional Pest management Division
Lynch will be responsible for managing public relations prodshyuct promotions market research advertising trade shows literashyture fulfillment and direct marketshying The division produces Teknar and Altosid for the control of mosquitoes
Before joining the marketing services department Lynch was a field sales representative for Sandozs Turf amp Ornamental products division
Lynch is a graduate of the Philadelphia College of Textiles and Science where he majored in marketing and minored in fishynance He is a native of Audubon NJ
10 3fUet ~eaU Spring 1996
Thomson Publications of Fresno California has just reshyleased the 1996 Insecticide Herbishycide Fungicide Quick Guide
In the Guide the pesticides are cross-referenced to registered usshyage and by the pests that each mashyterial will control This enables the user to make a general recomshymendation on which material to use in each situation
It sells for $1850 plus tax To order write Thomson publicashytions PO Box 9335 Fresno Calishyfornia 93791 call (209) 435-2163 or FAX (209) 435-8319
Please note the changes in the Cheminova distributor territory map below All bids and product inquiries should be directed to the distributor covering your location
bull Adapco Inc (800) 367-0659
ft Corn belt Chemical v (800) 652-9306
A Northeast Vector Management v (800) 331-7240
ft Van Waters amp Rogers IV (800) 888-4VWR
(iiCHEMINOVA Cheminova Inc 1700 Route 23 Suit9 210 Wayne New Jersey 07 470 800-548-6113
Pro-Mist UL V Sprayers
A Different
Breed Of
Sprayer All Electric bull Ultra Quiet Light Weight bull Modular
Rugged bull Chemically Efficient
FACTORY DIRECT
Beecomist SALES amp SERVICE
Beecomist Systems 3255 Meetinghouse Rd bull Telford PA bull 18969 USA
IN US 800-220-0787 OTHER CALLS 215-721-9424
FAX 215-721-0751
Partiallndex to Articles in Wing Beats
1990 -1995 bull _
Biosynopsis
The Asian Tiger Mosquito Aedes abop ictus Robert Novak Fall1992
The Eastern Saltmarsh Mosquito Aedes sollicitans George F OMeara Winter 1992
The Eastern Treehole Mosquito Aedes triseriatus Ned Walker Summer 1992
The Inland Floodwater MosquitoAedes vexans Susan Palchick Spring 1992
The Western Malaria Mosquito Anopheles freebomi Robert Washino Fall1993
The Quads Anopheles quadrimaculatus Say Paul Kaiser Fall1994
The House Mosquitoes of the USA Culex pipiens complex Harry Savage and Barry Miller Summer 1995
The Western Encephalitis Mosqui to Culex tarsalis William Reisen Summer 1993
The Dark Rice field Mosquito Psorophora columbiae Max Meisch Spring 1994
The Carnivores Toxorhynchites Carl J Jones and Eric Schreiber Winter 1994
Chemline
Adulticides in the 90s- The Changing Picture Carlisle B Rathburn Jr Winter 1990
AerialBti Applications Guy Faget Paul Perdew and Matthew Yates Winter 1992
Confusion in Margalitaville Doug Wassmer Winter 1995
Flashpoint- Fire point- Blastpoint Ed Meehan Winter 1992
Integrated Mosquito Management Henry R Rupp Fall1995
Mosquito Larvicides in the 90s- Status Quo Carlisle B Rathburn Jr Spring 1992
Relative Activity Measurements are the Best Guide toBti Selection Brian Melin Winter 1995
_ _
UL V Flushing Agents Thomas P Breaud and James R Brown Fall 1993
Chip Chat
Electronic Droplet Ana lysis Thomas G Floore and James R Brown Winter 1991
Flight Guidance Recording amp Analysis for Aerial Application Bill Reynolds Mark La tham and Joe Ruff Fall 1995
GIS A New Tool for Mosquito Control William G Guthe Spring 1993
Probe It Tom Floore Summer 1993
Crankcase Eddie
Storing a Two-Cycle Engine Ed Meehan Winter 1993
Faces
New Jerseys Mosquito Queen Judy A Hansen -Jim McNelly Fall1992
T Oscar Fultz Jr A Gentle Man Nancy Lavender Parsons Winter 1991
Women in Mosquito Control Kellie Etherson Spring 1993
Feature
Fatal Attraction for Blood Seekers Jonathan F Day Winter 1990
Flight D Scott Taylor Spring 1995
Macrophotography Admiring the Mosquito Microcosm LE Munstermann Winter 1991
Mosquito and Vector Control Where Do We Go from Here Bruce F Eldridge Winter 1994
Mythical Mosquito Control Lee Mitchell Summer 1992
Planning for Emergency Mosquito Survei lshylance and Control
Continued on page 20
Spring 1996 UI~ 2eatt 11
(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
Ed Meehan operates out of 1220 7th Ave POB9x218 Howard
Lake MN 55349
~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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middot VECTEC Inc Engineering Division 22401 Industrial Blvd Rogers MN 55374 USA
TERRIER I A powerful versatile economical and efficient hand-held UL V Aerosol Generator and Thermal Fogger
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Letter-sect t() the ~dit()r-sect
I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
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ORANGE COUNTY GOVERNMENT
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Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
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Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
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AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
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years middotue could q(t(n-d to tulw a little
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
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amp SANDOZ Alwnys read the label before using the product Sandoz Agro Inc 1300 E Touhy Ave Des Plaines IL 60018 Altosid is a trademark of Sandoz Ltd copy1995 Sandoz Agro Inc
Wing Beats
Changes in Wing Beats
With this issue Wing Beats enshyters a new era First Dennis Moore of the Lee County Mosshyquito Control District in Ft Myers Florida is the new Editorshyin-Chief Founding Editor-inshyChief Dr Charlie Morris of the Florida Medical Entomology Lab of the University of Florida is now the Managing Editor Dennis will work with Advertisers Column Editors Regional Editors and a newly established Editorial Reshyview Board to find new articles and determine the content of each issue Charlie will do the layout nanage the mailing list and work Nith the printer distributor and authors There has also been a change in the policy regulating the distribution of the magazine
Benefits of Changes
These changes have several positive outcomes First the cost to produce the magazine will be less than when layout and advershytiser solicitation were done by contract Eliminating the profit component of production allows us to lower advertiser rates for companies that are sustaining members of the FMCA and for advertising in all four issues in a calender year Second Wing Beats will be distributed free of charge via bulk mail to anyone in the United States wishing to receive it The sole purpose of the magazine is as an educational document here is no requirement to be a
member of any organization to receive it Subscriptions are avail-
Anew able to foreign addresses for the cost of first class mailings
Because of the change in distribution policy the number of people receiving the magazine has increased from 1800 for the last issue to 3000 for this issue This is because 18 state and reshygional mosquito control associashytions have opted to have their membership receive Wing Beats A membership that by-in-large was ineligible to receive the magazine in the past Is your mosquito control association listed on the accompanying sidebar
A National Magazine
Wing Beats has always been a national publication though it was produced by the Florida group While there have been many articles in the magazine from authors outside Florida and the US we have only two editors outside Florida One is Dr Charles Apperson of the U of North Carolina who has edited the Biosynopsis column since its conception The other a newshycomer is Bill Reinert of New J ershysey our first Regional Editor This letter is an open invitation for anyshyone who is interested in becoming either a Column Editor for a new coluqm or a Regional Editor to get in touch with us Through the Regional Editors we hope to inshycrease the number of articles writshyten by non-Florida mosquito conshytrollers and thus get a complete picture of mosquito control in the United States If we have 10 or 12 Regional Editors each would only
need to find one article a year and they don t have to write it themshyselves
Mosquito Control Associations amp Groups Receivfng Wing Beats
--~------middot----~ middot-Alabama VMCA American MCA
California MVCA Extension medical
entornoloigsts Florida MCA
Georgia MCA Illinois MVCA
Mid-Atlantic MCA middot Mississippi MVCA
Nevada MCA New Jersey MCA New Mexico MCP Northeast MCA Northwest MCA North Carolina OhioMCA
South Carolina MCA Tennesee Valley Authority
Texas MCA Utah MAD
Virgima MCA
New Recipients of TNing Beats
If you are receiving Wing Beats for the first time we hope you will take the time to continue reading this issue to determine if you want to continue receiving it There is a partial index of articles middot which appeared in the first six volumes of Wing Beats listed on
Continued on page 6
Spring 1996 11~ 2e4U 5
Continued from page 5
pages 11 and 20 of this issue to help you decide if this magazine is for you Limited copies of past issues are available on request and we will happily photocopy specific articles and send them to you again at no cost
In the next (Summer) issue of Wing Beats which will arrive about June new recipients will receive a cover letter asking them to return a form if they want to continue receiving the magazine Only those who return the form will get the Fall 1996 and future issues of the magazine However if you initially decide not to get the magazine and then change your mind or forget to send in your form you are welcome to reactivate your name on the mailshying list anytime Again there is no charge to receive Wing Beats We ask you to verify that you want to receive the magazine to help us minimize production and distribution costs
The Wing Beats mailing list is confidential It is not the intent of the FMCA to make the mailing list available to anyone or any orshyganization seeking to sell services or merchandise
Open Mailing List
If you know anyone who is not receiving Wing Beats and may be interested in doing so please send us those names and mailing adshydresses
Advertisements and Advertisers
Advertisers in Wing Beats are paying the printing and distribushytion costs for the magazine The rest is done by the volunteers listed on page 3 of this issue If you like Wing Beats and wish to see it continue please thank our
6 II~ ampau Spring 1996
advettisers when you talk to them next
We would especially like to thank Adapco Inc Lowndes Enshygineering Co Inc London Fog Inc Valent VecTec Inc and ZoeconSandoz who are charter advertisers in Wing Beats and have advertized in every issue to 23 to date in the past six years We also thank Beecomist Sysshytems Clarke Mosquito Control Products Inc Curtis Dyna Prodshyucts Chemical Containers and American Cyanamid for their continuing support
We are also very pleased that Isolair Bioquip Southwest Asshysurance and Spray Tech Inc have joined our growing list of supporters If you don t see your local distributor or a manufacshyturer that you deal with advertisshying in the magazine we ask you to encourage them to do so The more advertisers we have the more the magazine can be imshyproved and the more we can reshyduce ad rates
If you are on the commercial side of mosquito control consider ~ the fee schedule accompanying this article as you plan your fu-ture advertising strategy Those numbers are likely to grow as word of the availability of the magazine for free gets out
Contact Person
If you want to get on the Wing Beats mailing list (thats right no charge for US addresses) conshytribute to Wing Beats as a Column or Regional editor advertise or want any additional information regarding the magazine please write Dennis Moore Editor-inshyChief Wing Beats PO Box 60005 Ft Myers FL 33906 Better yet give him a call at 941-694-2174 or fax him at 941-693-5011 We look forward to hearing from you and your joining our effort to advance the cause for a better-informed mosquito control industry
Ad Rates for Wing Beats for 1996
Full Price
Full page blackwhite $67500
Half page blackwhite 46000
Full page 2-color 82500
Full page 4-color 97000
Advertise in all 4 Ad in 4 issues plus issues in a year FMCA Sustaining
Industry Member
57375 47250
39100 32200
70125 57750
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r ~
middotGene Baker is the President pf the Florida Mosquito Control ~
Association and Director bf the middot Le~nmiddot CountyMosquito Control J Program in Talla~assee Florida
DIBROMreg Concentrate provides fast consistent knockdown of adult mosquitoes
DIBROM Concentrate will effectively control your large-area mosquito problems whether its residential areas and municishypalities tidal marshes swamps and woodshylands or livestock pastures and feedlots
DIBROM is a fast-acting short residual
organophosphate insecticide that is proven effective against the most tolerant and resistant strains of mosquitoes
By using DIBROM as labeled you wont affect fish wildlife or livestock so its environmentally compatible It can easily be applied by ground or air and its low application rate gives significantly more coverage per tankload
If youre looking for a solution to largeshyarea mosquito control look to DIBROM Concentrate Make sure they never get off the ground again
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The Dark Pasture Mosquito
IMPORTANCE
Aedes nigromaculis (Ludlow) is a fierce biter and was once the principal pest species throughou~ most of the Central Valley of Cahshyfornia Although it has not been incriminated as a disease vector laboratory experiments show it is capable of transmi~ting s~veral arthropod-borne vuuses mcludshying western equine encephal~~yshyelitis and California encephahhs It was the first mosquito in Calishyfornia to develop resistance to DDT and by the 1970s had beshycome resistant to most organoshyphosphate and organochlorine insecticides Once extremely abundant populations of Ae nigromaculis in California have declined since the late 1970s pershyhaps due to improved water manshyagement practices
[ GEOGRAPHIC DISTRIBUTION )
The range of Ae nigromaculis covers most of the United States west of the Mississippi River north to Manitoba and south to Central Mexico This species was unknown in California prior to 1937 but quickly spread and beshycame the predominant pasture mosquito throughout much of the Central Valley
[ IDENTIFICATION
Larvae have a complete saddle uneven pecten row and the si- phon tuft inserted towards the tip of the siphon Adults have tarsal segments basally ringed with white scales and often a pale me dial ring on the proboscis Aedes
8 U~ geaf4- Spring 1996
Aedes nigromaculis
mgromaculis is considered closely related to Ae sollicitans (Walker) the eastern salt marsh mosquito although no natural hybrids have been reported
[ IMMATURE BIOLOGY
Before human development changed the landscape Ae nigromaculis probably bred m temporary rain pools However as its name implies 1t IS now tJpishycally associated with temporanly flooded irrigated pastures Eggs are commonly laid on clumps of bunch grass A small percentage of eggs require se~eral floodmg and drying cycles m order to hatch Completion of developshyment typically takes six to ten days but can take as little as f~ur days when temperatures are h1gh
Aedes nigromaculis is often found in association with Ae melanimon Dyar The two species differ slightly in their salinity and temperature t~lerance s~ch th~t Ae nigromaculzs predommates m water of somewhat lower salinity during the warm midsummer months and Ae melanimon preshydominates both earlier and later in the season Aedes nigromaculis is able to exploit more ephemeral habitats than Ae melanimon due to ~ somewhat faster developshyment rate
(~~~A~o_uL_T_B_E_H_A_VI_O~R--~) Males emerge before females
and form mating swarms at dawn and dusk Most flight activity
also occurs at dawn and dusk Aedes nigromaculis does not mate willingly in captivity s~ la~orashytory colonies can be ma1~1tamed only by induced copulation
( BLooomiddot FEEDING )
Host preference studies show that Ae nigromaculis feeds preshydominantly on cattle and to a lesser extent on birds dogs horses humans and sheep Feshymales rna y f1 y several miles for a blood meal and readily disperse from breeding habitats in to populated areas when hosts ~re not available nearby Mass disshypersals of 20 to 30 mil~s have been reported This mosqmto IS
known as a vicious day and dusk biter Most females take a blood meal within four days of emershygence-and oviposit about two days after feeding
SEASONALITY
In California Ae nigromaculis is active from April or May through October with as many as 10 generations per seaso~ Peak adult populations occu m July and August This speoes overshywinters as embryonated eggs with diapause apparently trigshygered by decreasing tempe~atures in the fall and is broken by Inshy
creasing temperatures in the spring
Steve Schutz is an fntomologist with the Contra Costa Mosquito and Vector Control District in
Concord California
PURE AND SIMPLE Pump FYFANON ULV directly from our drum to your tank It goes in undiluted - eliminates the potential for costly mixing errors and reduces employee chemical exposure In the new returnable refillable container FYFANON also eliminates triple rinsing and container disposal- What could be easier
Todays FYFANON ULV is better than ever- 96-98 pure and less acutely toxic than resmethrin permethrin fenthion or naled
FYFANON saves you time money and labor Do the math and youll see- FYFANON covers more acres for fewer dollars than any
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FOR ADULT MOSQUITO CONTROL
Cheminova Inc bull 1700 Route 23 bull Suite 210 bull Wayne 1Jew Jersey 07470 bull 800-548-6113
r
IMDllSTJY BEJtT
Cheminova Sandoz and Thomson
Sandoz Appoints Sean Lynch
Sandoz Agro Inc recently apshypointed Sean Lynch as Marketing Services Associate in Sandozs Professional Pest management Division
Lynch will be responsible for managing public relations prodshyuct promotions market research advertising trade shows literashyture fulfillment and direct marketshying The division produces Teknar and Altosid for the control of mosquitoes
Before joining the marketing services department Lynch was a field sales representative for Sandozs Turf amp Ornamental products division
Lynch is a graduate of the Philadelphia College of Textiles and Science where he majored in marketing and minored in fishynance He is a native of Audubon NJ
10 3fUet ~eaU Spring 1996
Thomson Publications of Fresno California has just reshyleased the 1996 Insecticide Herbishycide Fungicide Quick Guide
In the Guide the pesticides are cross-referenced to registered usshyage and by the pests that each mashyterial will control This enables the user to make a general recomshymendation on which material to use in each situation
It sells for $1850 plus tax To order write Thomson publicashytions PO Box 9335 Fresno Calishyfornia 93791 call (209) 435-2163 or FAX (209) 435-8319
Please note the changes in the Cheminova distributor territory map below All bids and product inquiries should be directed to the distributor covering your location
bull Adapco Inc (800) 367-0659
ft Corn belt Chemical v (800) 652-9306
A Northeast Vector Management v (800) 331-7240
ft Van Waters amp Rogers IV (800) 888-4VWR
(iiCHEMINOVA Cheminova Inc 1700 Route 23 Suit9 210 Wayne New Jersey 07 470 800-548-6113
Pro-Mist UL V Sprayers
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Rugged bull Chemically Efficient
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Beecomist Systems 3255 Meetinghouse Rd bull Telford PA bull 18969 USA
IN US 800-220-0787 OTHER CALLS 215-721-9424
FAX 215-721-0751
Partiallndex to Articles in Wing Beats
1990 -1995 bull _
Biosynopsis
The Asian Tiger Mosquito Aedes abop ictus Robert Novak Fall1992
The Eastern Saltmarsh Mosquito Aedes sollicitans George F OMeara Winter 1992
The Eastern Treehole Mosquito Aedes triseriatus Ned Walker Summer 1992
The Inland Floodwater MosquitoAedes vexans Susan Palchick Spring 1992
The Western Malaria Mosquito Anopheles freebomi Robert Washino Fall1993
The Quads Anopheles quadrimaculatus Say Paul Kaiser Fall1994
The House Mosquitoes of the USA Culex pipiens complex Harry Savage and Barry Miller Summer 1995
The Western Encephalitis Mosqui to Culex tarsalis William Reisen Summer 1993
The Dark Rice field Mosquito Psorophora columbiae Max Meisch Spring 1994
The Carnivores Toxorhynchites Carl J Jones and Eric Schreiber Winter 1994
Chemline
Adulticides in the 90s- The Changing Picture Carlisle B Rathburn Jr Winter 1990
AerialBti Applications Guy Faget Paul Perdew and Matthew Yates Winter 1992
Confusion in Margalitaville Doug Wassmer Winter 1995
Flashpoint- Fire point- Blastpoint Ed Meehan Winter 1992
Integrated Mosquito Management Henry R Rupp Fall1995
Mosquito Larvicides in the 90s- Status Quo Carlisle B Rathburn Jr Spring 1992
Relative Activity Measurements are the Best Guide toBti Selection Brian Melin Winter 1995
_ _
UL V Flushing Agents Thomas P Breaud and James R Brown Fall 1993
Chip Chat
Electronic Droplet Ana lysis Thomas G Floore and James R Brown Winter 1991
Flight Guidance Recording amp Analysis for Aerial Application Bill Reynolds Mark La tham and Joe Ruff Fall 1995
GIS A New Tool for Mosquito Control William G Guthe Spring 1993
Probe It Tom Floore Summer 1993
Crankcase Eddie
Storing a Two-Cycle Engine Ed Meehan Winter 1993
Faces
New Jerseys Mosquito Queen Judy A Hansen -Jim McNelly Fall1992
T Oscar Fultz Jr A Gentle Man Nancy Lavender Parsons Winter 1991
Women in Mosquito Control Kellie Etherson Spring 1993
Feature
Fatal Attraction for Blood Seekers Jonathan F Day Winter 1990
Flight D Scott Taylor Spring 1995
Macrophotography Admiring the Mosquito Microcosm LE Munstermann Winter 1991
Mosquito and Vector Control Where Do We Go from Here Bruce F Eldridge Winter 1994
Mythical Mosquito Control Lee Mitchell Summer 1992
Planning for Emergency Mosquito Survei lshylance and Control
Continued on page 20
Spring 1996 UI~ 2eatt 11
(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
Ed Meehan operates out of 1220 7th Ave POB9x218 Howard
Lake MN 55349
~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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Letter-sect t() the ~dit()r-sect
I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
Vero Beach Florida
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
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Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
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Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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Wing Beats
Changes in Wing Beats
With this issue Wing Beats enshyters a new era First Dennis Moore of the Lee County Mosshyquito Control District in Ft Myers Florida is the new Editorshyin-Chief Founding Editor-inshyChief Dr Charlie Morris of the Florida Medical Entomology Lab of the University of Florida is now the Managing Editor Dennis will work with Advertisers Column Editors Regional Editors and a newly established Editorial Reshyview Board to find new articles and determine the content of each issue Charlie will do the layout nanage the mailing list and work Nith the printer distributor and authors There has also been a change in the policy regulating the distribution of the magazine
Benefits of Changes
These changes have several positive outcomes First the cost to produce the magazine will be less than when layout and advershytiser solicitation were done by contract Eliminating the profit component of production allows us to lower advertiser rates for companies that are sustaining members of the FMCA and for advertising in all four issues in a calender year Second Wing Beats will be distributed free of charge via bulk mail to anyone in the United States wishing to receive it The sole purpose of the magazine is as an educational document here is no requirement to be a
member of any organization to receive it Subscriptions are avail-
Anew able to foreign addresses for the cost of first class mailings
Because of the change in distribution policy the number of people receiving the magazine has increased from 1800 for the last issue to 3000 for this issue This is because 18 state and reshygional mosquito control associashytions have opted to have their membership receive Wing Beats A membership that by-in-large was ineligible to receive the magazine in the past Is your mosquito control association listed on the accompanying sidebar
A National Magazine
Wing Beats has always been a national publication though it was produced by the Florida group While there have been many articles in the magazine from authors outside Florida and the US we have only two editors outside Florida One is Dr Charles Apperson of the U of North Carolina who has edited the Biosynopsis column since its conception The other a newshycomer is Bill Reinert of New J ershysey our first Regional Editor This letter is an open invitation for anyshyone who is interested in becoming either a Column Editor for a new coluqm or a Regional Editor to get in touch with us Through the Regional Editors we hope to inshycrease the number of articles writshyten by non-Florida mosquito conshytrollers and thus get a complete picture of mosquito control in the United States If we have 10 or 12 Regional Editors each would only
need to find one article a year and they don t have to write it themshyselves
Mosquito Control Associations amp Groups Receivfng Wing Beats
--~------middot----~ middot-Alabama VMCA American MCA
California MVCA Extension medical
entornoloigsts Florida MCA
Georgia MCA Illinois MVCA
Mid-Atlantic MCA middot Mississippi MVCA
Nevada MCA New Jersey MCA New Mexico MCP Northeast MCA Northwest MCA North Carolina OhioMCA
South Carolina MCA Tennesee Valley Authority
Texas MCA Utah MAD
Virgima MCA
New Recipients of TNing Beats
If you are receiving Wing Beats for the first time we hope you will take the time to continue reading this issue to determine if you want to continue receiving it There is a partial index of articles middot which appeared in the first six volumes of Wing Beats listed on
Continued on page 6
Spring 1996 11~ 2e4U 5
Continued from page 5
pages 11 and 20 of this issue to help you decide if this magazine is for you Limited copies of past issues are available on request and we will happily photocopy specific articles and send them to you again at no cost
In the next (Summer) issue of Wing Beats which will arrive about June new recipients will receive a cover letter asking them to return a form if they want to continue receiving the magazine Only those who return the form will get the Fall 1996 and future issues of the magazine However if you initially decide not to get the magazine and then change your mind or forget to send in your form you are welcome to reactivate your name on the mailshying list anytime Again there is no charge to receive Wing Beats We ask you to verify that you want to receive the magazine to help us minimize production and distribution costs
The Wing Beats mailing list is confidential It is not the intent of the FMCA to make the mailing list available to anyone or any orshyganization seeking to sell services or merchandise
Open Mailing List
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Advertisements and Advertisers
Advertisers in Wing Beats are paying the printing and distribushytion costs for the magazine The rest is done by the volunteers listed on page 3 of this issue If you like Wing Beats and wish to see it continue please thank our
6 II~ ampau Spring 1996
advettisers when you talk to them next
We would especially like to thank Adapco Inc Lowndes Enshygineering Co Inc London Fog Inc Valent VecTec Inc and ZoeconSandoz who are charter advertisers in Wing Beats and have advertized in every issue to 23 to date in the past six years We also thank Beecomist Sysshytems Clarke Mosquito Control Products Inc Curtis Dyna Prodshyucts Chemical Containers and American Cyanamid for their continuing support
We are also very pleased that Isolair Bioquip Southwest Asshysurance and Spray Tech Inc have joined our growing list of supporters If you don t see your local distributor or a manufacshyturer that you deal with advertisshying in the magazine we ask you to encourage them to do so The more advertisers we have the more the magazine can be imshyproved and the more we can reshyduce ad rates
If you are on the commercial side of mosquito control consider ~ the fee schedule accompanying this article as you plan your fu-ture advertising strategy Those numbers are likely to grow as word of the availability of the magazine for free gets out
Contact Person
If you want to get on the Wing Beats mailing list (thats right no charge for US addresses) conshytribute to Wing Beats as a Column or Regional editor advertise or want any additional information regarding the magazine please write Dennis Moore Editor-inshyChief Wing Beats PO Box 60005 Ft Myers FL 33906 Better yet give him a call at 941-694-2174 or fax him at 941-693-5011 We look forward to hearing from you and your joining our effort to advance the cause for a better-informed mosquito control industry
Ad Rates for Wing Beats for 1996
Full Price
Full page blackwhite $67500
Half page blackwhite 46000
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Full page 4-color 97000
Advertise in all 4 Ad in 4 issues plus issues in a year FMCA Sustaining
Industry Member
57375 47250
39100 32200
70125 57750
82450 67900
r ~
middotGene Baker is the President pf the Florida Mosquito Control ~
Association and Director bf the middot Le~nmiddot CountyMosquito Control J Program in Talla~assee Florida
DIBROMreg Concentrate provides fast consistent knockdown of adult mosquitoes
DIBROM Concentrate will effectively control your large-area mosquito problems whether its residential areas and municishypalities tidal marshes swamps and woodshylands or livestock pastures and feedlots
DIBROM is a fast-acting short residual
organophosphate insecticide that is proven effective against the most tolerant and resistant strains of mosquitoes
By using DIBROM as labeled you wont affect fish wildlife or livestock so its environmentally compatible It can easily be applied by ground or air and its low application rate gives significantly more coverage per tankload
If youre looking for a solution to largeshyarea mosquito control look to DIBROM Concentrate Make sure they never get off the ground again
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VALENT
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The Dark Pasture Mosquito
IMPORTANCE
Aedes nigromaculis (Ludlow) is a fierce biter and was once the principal pest species throughou~ most of the Central Valley of Cahshyfornia Although it has not been incriminated as a disease vector laboratory experiments show it is capable of transmi~ting s~veral arthropod-borne vuuses mcludshying western equine encephal~~yshyelitis and California encephahhs It was the first mosquito in Calishyfornia to develop resistance to DDT and by the 1970s had beshycome resistant to most organoshyphosphate and organochlorine insecticides Once extremely abundant populations of Ae nigromaculis in California have declined since the late 1970s pershyhaps due to improved water manshyagement practices
[ GEOGRAPHIC DISTRIBUTION )
The range of Ae nigromaculis covers most of the United States west of the Mississippi River north to Manitoba and south to Central Mexico This species was unknown in California prior to 1937 but quickly spread and beshycame the predominant pasture mosquito throughout much of the Central Valley
[ IDENTIFICATION
Larvae have a complete saddle uneven pecten row and the si- phon tuft inserted towards the tip of the siphon Adults have tarsal segments basally ringed with white scales and often a pale me dial ring on the proboscis Aedes
8 U~ geaf4- Spring 1996
Aedes nigromaculis
mgromaculis is considered closely related to Ae sollicitans (Walker) the eastern salt marsh mosquito although no natural hybrids have been reported
[ IMMATURE BIOLOGY
Before human development changed the landscape Ae nigromaculis probably bred m temporary rain pools However as its name implies 1t IS now tJpishycally associated with temporanly flooded irrigated pastures Eggs are commonly laid on clumps of bunch grass A small percentage of eggs require se~eral floodmg and drying cycles m order to hatch Completion of developshyment typically takes six to ten days but can take as little as f~ur days when temperatures are h1gh
Aedes nigromaculis is often found in association with Ae melanimon Dyar The two species differ slightly in their salinity and temperature t~lerance s~ch th~t Ae nigromaculzs predommates m water of somewhat lower salinity during the warm midsummer months and Ae melanimon preshydominates both earlier and later in the season Aedes nigromaculis is able to exploit more ephemeral habitats than Ae melanimon due to ~ somewhat faster developshyment rate
(~~~A~o_uL_T_B_E_H_A_VI_O~R--~) Males emerge before females
and form mating swarms at dawn and dusk Most flight activity
also occurs at dawn and dusk Aedes nigromaculis does not mate willingly in captivity s~ la~orashytory colonies can be ma1~1tamed only by induced copulation
( BLooomiddot FEEDING )
Host preference studies show that Ae nigromaculis feeds preshydominantly on cattle and to a lesser extent on birds dogs horses humans and sheep Feshymales rna y f1 y several miles for a blood meal and readily disperse from breeding habitats in to populated areas when hosts ~re not available nearby Mass disshypersals of 20 to 30 mil~s have been reported This mosqmto IS
known as a vicious day and dusk biter Most females take a blood meal within four days of emershygence-and oviposit about two days after feeding
SEASONALITY
In California Ae nigromaculis is active from April or May through October with as many as 10 generations per seaso~ Peak adult populations occu m July and August This speoes overshywinters as embryonated eggs with diapause apparently trigshygered by decreasing tempe~atures in the fall and is broken by Inshy
creasing temperatures in the spring
Steve Schutz is an fntomologist with the Contra Costa Mosquito and Vector Control District in
Concord California
PURE AND SIMPLE Pump FYFANON ULV directly from our drum to your tank It goes in undiluted - eliminates the potential for costly mixing errors and reduces employee chemical exposure In the new returnable refillable container FYFANON also eliminates triple rinsing and container disposal- What could be easier
Todays FYFANON ULV is better than ever- 96-98 pure and less acutely toxic than resmethrin permethrin fenthion or naled
FYFANON saves you time money and labor Do the math and youll see- FYFANON covers more acres for fewer dollars than any
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((I CHEMINOVA
FOR ADULT MOSQUITO CONTROL
Cheminova Inc bull 1700 Route 23 bull Suite 210 bull Wayne 1Jew Jersey 07470 bull 800-548-6113
r
IMDllSTJY BEJtT
Cheminova Sandoz and Thomson
Sandoz Appoints Sean Lynch
Sandoz Agro Inc recently apshypointed Sean Lynch as Marketing Services Associate in Sandozs Professional Pest management Division
Lynch will be responsible for managing public relations prodshyuct promotions market research advertising trade shows literashyture fulfillment and direct marketshying The division produces Teknar and Altosid for the control of mosquitoes
Before joining the marketing services department Lynch was a field sales representative for Sandozs Turf amp Ornamental products division
Lynch is a graduate of the Philadelphia College of Textiles and Science where he majored in marketing and minored in fishynance He is a native of Audubon NJ
10 3fUet ~eaU Spring 1996
Thomson Publications of Fresno California has just reshyleased the 1996 Insecticide Herbishycide Fungicide Quick Guide
In the Guide the pesticides are cross-referenced to registered usshyage and by the pests that each mashyterial will control This enables the user to make a general recomshymendation on which material to use in each situation
It sells for $1850 plus tax To order write Thomson publicashytions PO Box 9335 Fresno Calishyfornia 93791 call (209) 435-2163 or FAX (209) 435-8319
Please note the changes in the Cheminova distributor territory map below All bids and product inquiries should be directed to the distributor covering your location
bull Adapco Inc (800) 367-0659
ft Corn belt Chemical v (800) 652-9306
A Northeast Vector Management v (800) 331-7240
ft Van Waters amp Rogers IV (800) 888-4VWR
(iiCHEMINOVA Cheminova Inc 1700 Route 23 Suit9 210 Wayne New Jersey 07 470 800-548-6113
Pro-Mist UL V Sprayers
A Different
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Rugged bull Chemically Efficient
FACTORY DIRECT
Beecomist SALES amp SERVICE
Beecomist Systems 3255 Meetinghouse Rd bull Telford PA bull 18969 USA
IN US 800-220-0787 OTHER CALLS 215-721-9424
FAX 215-721-0751
Partiallndex to Articles in Wing Beats
1990 -1995 bull _
Biosynopsis
The Asian Tiger Mosquito Aedes abop ictus Robert Novak Fall1992
The Eastern Saltmarsh Mosquito Aedes sollicitans George F OMeara Winter 1992
The Eastern Treehole Mosquito Aedes triseriatus Ned Walker Summer 1992
The Inland Floodwater MosquitoAedes vexans Susan Palchick Spring 1992
The Western Malaria Mosquito Anopheles freebomi Robert Washino Fall1993
The Quads Anopheles quadrimaculatus Say Paul Kaiser Fall1994
The House Mosquitoes of the USA Culex pipiens complex Harry Savage and Barry Miller Summer 1995
The Western Encephalitis Mosqui to Culex tarsalis William Reisen Summer 1993
The Dark Rice field Mosquito Psorophora columbiae Max Meisch Spring 1994
The Carnivores Toxorhynchites Carl J Jones and Eric Schreiber Winter 1994
Chemline
Adulticides in the 90s- The Changing Picture Carlisle B Rathburn Jr Winter 1990
AerialBti Applications Guy Faget Paul Perdew and Matthew Yates Winter 1992
Confusion in Margalitaville Doug Wassmer Winter 1995
Flashpoint- Fire point- Blastpoint Ed Meehan Winter 1992
Integrated Mosquito Management Henry R Rupp Fall1995
Mosquito Larvicides in the 90s- Status Quo Carlisle B Rathburn Jr Spring 1992
Relative Activity Measurements are the Best Guide toBti Selection Brian Melin Winter 1995
_ _
UL V Flushing Agents Thomas P Breaud and James R Brown Fall 1993
Chip Chat
Electronic Droplet Ana lysis Thomas G Floore and James R Brown Winter 1991
Flight Guidance Recording amp Analysis for Aerial Application Bill Reynolds Mark La tham and Joe Ruff Fall 1995
GIS A New Tool for Mosquito Control William G Guthe Spring 1993
Probe It Tom Floore Summer 1993
Crankcase Eddie
Storing a Two-Cycle Engine Ed Meehan Winter 1993
Faces
New Jerseys Mosquito Queen Judy A Hansen -Jim McNelly Fall1992
T Oscar Fultz Jr A Gentle Man Nancy Lavender Parsons Winter 1991
Women in Mosquito Control Kellie Etherson Spring 1993
Feature
Fatal Attraction for Blood Seekers Jonathan F Day Winter 1990
Flight D Scott Taylor Spring 1995
Macrophotography Admiring the Mosquito Microcosm LE Munstermann Winter 1991
Mosquito and Vector Control Where Do We Go from Here Bruce F Eldridge Winter 1994
Mythical Mosquito Control Lee Mitchell Summer 1992
Planning for Emergency Mosquito Survei lshylance and Control
Continued on page 20
Spring 1996 UI~ 2eatt 11
(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
Ed Meehan operates out of 1220 7th Ave POB9x218 Howard
Lake MN 55349
~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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Pyrethroid Mosquito Adulticides cost just pennies per acre
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Letter-sect t() the ~dit()r-sect
I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
Vero Beach Florida
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
OUt dtiu ~ ~ aHd ~
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COVERAGES OFFERED
General Liability
Public Officials Liability
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Automobile Liability
Aviation Liability
Aviation Hull (including theft)
Aviation Chemical Liability
Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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(pportunities middot Assistant Manager Arthropod Control
Department
Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
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years middotue could q(t(n-d to tulw a little
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products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
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For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
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TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
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PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
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Together we have reached
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pages 11 and 20 of this issue to help you decide if this magazine is for you Limited copies of past issues are available on request and we will happily photocopy specific articles and send them to you again at no cost
In the next (Summer) issue of Wing Beats which will arrive about June new recipients will receive a cover letter asking them to return a form if they want to continue receiving the magazine Only those who return the form will get the Fall 1996 and future issues of the magazine However if you initially decide not to get the magazine and then change your mind or forget to send in your form you are welcome to reactivate your name on the mailshying list anytime Again there is no charge to receive Wing Beats We ask you to verify that you want to receive the magazine to help us minimize production and distribution costs
The Wing Beats mailing list is confidential It is not the intent of the FMCA to make the mailing list available to anyone or any orshyganization seeking to sell services or merchandise
Open Mailing List
If you know anyone who is not receiving Wing Beats and may be interested in doing so please send us those names and mailing adshydresses
Advertisements and Advertisers
Advertisers in Wing Beats are paying the printing and distribushytion costs for the magazine The rest is done by the volunteers listed on page 3 of this issue If you like Wing Beats and wish to see it continue please thank our
6 II~ ampau Spring 1996
advettisers when you talk to them next
We would especially like to thank Adapco Inc Lowndes Enshygineering Co Inc London Fog Inc Valent VecTec Inc and ZoeconSandoz who are charter advertisers in Wing Beats and have advertized in every issue to 23 to date in the past six years We also thank Beecomist Sysshytems Clarke Mosquito Control Products Inc Curtis Dyna Prodshyucts Chemical Containers and American Cyanamid for their continuing support
We are also very pleased that Isolair Bioquip Southwest Asshysurance and Spray Tech Inc have joined our growing list of supporters If you don t see your local distributor or a manufacshyturer that you deal with advertisshying in the magazine we ask you to encourage them to do so The more advertisers we have the more the magazine can be imshyproved and the more we can reshyduce ad rates
If you are on the commercial side of mosquito control consider ~ the fee schedule accompanying this article as you plan your fu-ture advertising strategy Those numbers are likely to grow as word of the availability of the magazine for free gets out
Contact Person
If you want to get on the Wing Beats mailing list (thats right no charge for US addresses) conshytribute to Wing Beats as a Column or Regional editor advertise or want any additional information regarding the magazine please write Dennis Moore Editor-inshyChief Wing Beats PO Box 60005 Ft Myers FL 33906 Better yet give him a call at 941-694-2174 or fax him at 941-693-5011 We look forward to hearing from you and your joining our effort to advance the cause for a better-informed mosquito control industry
Ad Rates for Wing Beats for 1996
Full Price
Full page blackwhite $67500
Half page blackwhite 46000
Full page 2-color 82500
Full page 4-color 97000
Advertise in all 4 Ad in 4 issues plus issues in a year FMCA Sustaining
Industry Member
57375 47250
39100 32200
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r ~
middotGene Baker is the President pf the Florida Mosquito Control ~
Association and Director bf the middot Le~nmiddot CountyMosquito Control J Program in Talla~assee Florida
DIBROMreg Concentrate provides fast consistent knockdown of adult mosquitoes
DIBROM Concentrate will effectively control your large-area mosquito problems whether its residential areas and municishypalities tidal marshes swamps and woodshylands or livestock pastures and feedlots
DIBROM is a fast-acting short residual
organophosphate insecticide that is proven effective against the most tolerant and resistant strains of mosquitoes
By using DIBROM as labeled you wont affect fish wildlife or livestock so its environmentally compatible It can easily be applied by ground or air and its low application rate gives significantly more coverage per tankload
If youre looking for a solution to largeshyarea mosquito control look to DIBROM Concentrate Make sure they never get off the ground again
DIBROMreg CONCENTUTE AJways read and fo llow label direclio s DIBROM is a registered tradenarrlt ol Valent USA Corporalion copy1990 Valen USA Corp
VALENT
-~ ~
z~s~s~-~ot-middotmiddot
The Dark Pasture Mosquito
IMPORTANCE
Aedes nigromaculis (Ludlow) is a fierce biter and was once the principal pest species throughou~ most of the Central Valley of Cahshyfornia Although it has not been incriminated as a disease vector laboratory experiments show it is capable of transmi~ting s~veral arthropod-borne vuuses mcludshying western equine encephal~~yshyelitis and California encephahhs It was the first mosquito in Calishyfornia to develop resistance to DDT and by the 1970s had beshycome resistant to most organoshyphosphate and organochlorine insecticides Once extremely abundant populations of Ae nigromaculis in California have declined since the late 1970s pershyhaps due to improved water manshyagement practices
[ GEOGRAPHIC DISTRIBUTION )
The range of Ae nigromaculis covers most of the United States west of the Mississippi River north to Manitoba and south to Central Mexico This species was unknown in California prior to 1937 but quickly spread and beshycame the predominant pasture mosquito throughout much of the Central Valley
[ IDENTIFICATION
Larvae have a complete saddle uneven pecten row and the si- phon tuft inserted towards the tip of the siphon Adults have tarsal segments basally ringed with white scales and often a pale me dial ring on the proboscis Aedes
8 U~ geaf4- Spring 1996
Aedes nigromaculis
mgromaculis is considered closely related to Ae sollicitans (Walker) the eastern salt marsh mosquito although no natural hybrids have been reported
[ IMMATURE BIOLOGY
Before human development changed the landscape Ae nigromaculis probably bred m temporary rain pools However as its name implies 1t IS now tJpishycally associated with temporanly flooded irrigated pastures Eggs are commonly laid on clumps of bunch grass A small percentage of eggs require se~eral floodmg and drying cycles m order to hatch Completion of developshyment typically takes six to ten days but can take as little as f~ur days when temperatures are h1gh
Aedes nigromaculis is often found in association with Ae melanimon Dyar The two species differ slightly in their salinity and temperature t~lerance s~ch th~t Ae nigromaculzs predommates m water of somewhat lower salinity during the warm midsummer months and Ae melanimon preshydominates both earlier and later in the season Aedes nigromaculis is able to exploit more ephemeral habitats than Ae melanimon due to ~ somewhat faster developshyment rate
(~~~A~o_uL_T_B_E_H_A_VI_O~R--~) Males emerge before females
and form mating swarms at dawn and dusk Most flight activity
also occurs at dawn and dusk Aedes nigromaculis does not mate willingly in captivity s~ la~orashytory colonies can be ma1~1tamed only by induced copulation
( BLooomiddot FEEDING )
Host preference studies show that Ae nigromaculis feeds preshydominantly on cattle and to a lesser extent on birds dogs horses humans and sheep Feshymales rna y f1 y several miles for a blood meal and readily disperse from breeding habitats in to populated areas when hosts ~re not available nearby Mass disshypersals of 20 to 30 mil~s have been reported This mosqmto IS
known as a vicious day and dusk biter Most females take a blood meal within four days of emershygence-and oviposit about two days after feeding
SEASONALITY
In California Ae nigromaculis is active from April or May through October with as many as 10 generations per seaso~ Peak adult populations occu m July and August This speoes overshywinters as embryonated eggs with diapause apparently trigshygered by decreasing tempe~atures in the fall and is broken by Inshy
creasing temperatures in the spring
Steve Schutz is an fntomologist with the Contra Costa Mosquito and Vector Control District in
Concord California
PURE AND SIMPLE Pump FYFANON ULV directly from our drum to your tank It goes in undiluted - eliminates the potential for costly mixing errors and reduces employee chemical exposure In the new returnable refillable container FYFANON also eliminates triple rinsing and container disposal- What could be easier
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FOR ADULT MOSQUITO CONTROL
Cheminova Inc bull 1700 Route 23 bull Suite 210 bull Wayne 1Jew Jersey 07470 bull 800-548-6113
r
IMDllSTJY BEJtT
Cheminova Sandoz and Thomson
Sandoz Appoints Sean Lynch
Sandoz Agro Inc recently apshypointed Sean Lynch as Marketing Services Associate in Sandozs Professional Pest management Division
Lynch will be responsible for managing public relations prodshyuct promotions market research advertising trade shows literashyture fulfillment and direct marketshying The division produces Teknar and Altosid for the control of mosquitoes
Before joining the marketing services department Lynch was a field sales representative for Sandozs Turf amp Ornamental products division
Lynch is a graduate of the Philadelphia College of Textiles and Science where he majored in marketing and minored in fishynance He is a native of Audubon NJ
10 3fUet ~eaU Spring 1996
Thomson Publications of Fresno California has just reshyleased the 1996 Insecticide Herbishycide Fungicide Quick Guide
In the Guide the pesticides are cross-referenced to registered usshyage and by the pests that each mashyterial will control This enables the user to make a general recomshymendation on which material to use in each situation
It sells for $1850 plus tax To order write Thomson publicashytions PO Box 9335 Fresno Calishyfornia 93791 call (209) 435-2163 or FAX (209) 435-8319
Please note the changes in the Cheminova distributor territory map below All bids and product inquiries should be directed to the distributor covering your location
bull Adapco Inc (800) 367-0659
ft Corn belt Chemical v (800) 652-9306
A Northeast Vector Management v (800) 331-7240
ft Van Waters amp Rogers IV (800) 888-4VWR
(iiCHEMINOVA Cheminova Inc 1700 Route 23 Suit9 210 Wayne New Jersey 07 470 800-548-6113
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Rugged bull Chemically Efficient
FACTORY DIRECT
Beecomist SALES amp SERVICE
Beecomist Systems 3255 Meetinghouse Rd bull Telford PA bull 18969 USA
IN US 800-220-0787 OTHER CALLS 215-721-9424
FAX 215-721-0751
Partiallndex to Articles in Wing Beats
1990 -1995 bull _
Biosynopsis
The Asian Tiger Mosquito Aedes abop ictus Robert Novak Fall1992
The Eastern Saltmarsh Mosquito Aedes sollicitans George F OMeara Winter 1992
The Eastern Treehole Mosquito Aedes triseriatus Ned Walker Summer 1992
The Inland Floodwater MosquitoAedes vexans Susan Palchick Spring 1992
The Western Malaria Mosquito Anopheles freebomi Robert Washino Fall1993
The Quads Anopheles quadrimaculatus Say Paul Kaiser Fall1994
The House Mosquitoes of the USA Culex pipiens complex Harry Savage and Barry Miller Summer 1995
The Western Encephalitis Mosqui to Culex tarsalis William Reisen Summer 1993
The Dark Rice field Mosquito Psorophora columbiae Max Meisch Spring 1994
The Carnivores Toxorhynchites Carl J Jones and Eric Schreiber Winter 1994
Chemline
Adulticides in the 90s- The Changing Picture Carlisle B Rathburn Jr Winter 1990
AerialBti Applications Guy Faget Paul Perdew and Matthew Yates Winter 1992
Confusion in Margalitaville Doug Wassmer Winter 1995
Flashpoint- Fire point- Blastpoint Ed Meehan Winter 1992
Integrated Mosquito Management Henry R Rupp Fall1995
Mosquito Larvicides in the 90s- Status Quo Carlisle B Rathburn Jr Spring 1992
Relative Activity Measurements are the Best Guide toBti Selection Brian Melin Winter 1995
_ _
UL V Flushing Agents Thomas P Breaud and James R Brown Fall 1993
Chip Chat
Electronic Droplet Ana lysis Thomas G Floore and James R Brown Winter 1991
Flight Guidance Recording amp Analysis for Aerial Application Bill Reynolds Mark La tham and Joe Ruff Fall 1995
GIS A New Tool for Mosquito Control William G Guthe Spring 1993
Probe It Tom Floore Summer 1993
Crankcase Eddie
Storing a Two-Cycle Engine Ed Meehan Winter 1993
Faces
New Jerseys Mosquito Queen Judy A Hansen -Jim McNelly Fall1992
T Oscar Fultz Jr A Gentle Man Nancy Lavender Parsons Winter 1991
Women in Mosquito Control Kellie Etherson Spring 1993
Feature
Fatal Attraction for Blood Seekers Jonathan F Day Winter 1990
Flight D Scott Taylor Spring 1995
Macrophotography Admiring the Mosquito Microcosm LE Munstermann Winter 1991
Mosquito and Vector Control Where Do We Go from Here Bruce F Eldridge Winter 1994
Mythical Mosquito Control Lee Mitchell Summer 1992
Planning for Emergency Mosquito Survei lshylance and Control
Continued on page 20
Spring 1996 UI~ 2eatt 11
(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
Ed Meehan operates out of 1220 7th Ave POB9x218 Howard
Lake MN 55349
~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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Letter-sect t() the ~dit()r-sect
I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
Vero Beach Florida
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Tete (503) 622-3010 FAX (503) 622-4274
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Innovation Performance
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Versatility Cost efficiency
PaylQa~ productivi-ty and profits middot
(pportunities middot Assistant Manager Arthropod Control
Department
Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
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years middotue could q(t(n-d to tulw a little
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American (~Yntarnid Wricultwnll~TXhlctr
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TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
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MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
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5 Serving Growing Excelling
BULK RATE USPOSThGE
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DIBROMreg Concentrate provides fast consistent knockdown of adult mosquitoes
DIBROM Concentrate will effectively control your large-area mosquito problems whether its residential areas and municishypalities tidal marshes swamps and woodshylands or livestock pastures and feedlots
DIBROM is a fast-acting short residual
organophosphate insecticide that is proven effective against the most tolerant and resistant strains of mosquitoes
By using DIBROM as labeled you wont affect fish wildlife or livestock so its environmentally compatible It can easily be applied by ground or air and its low application rate gives significantly more coverage per tankload
If youre looking for a solution to largeshyarea mosquito control look to DIBROM Concentrate Make sure they never get off the ground again
DIBROMreg CONCENTUTE AJways read and fo llow label direclio s DIBROM is a registered tradenarrlt ol Valent USA Corporalion copy1990 Valen USA Corp
VALENT
-~ ~
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The Dark Pasture Mosquito
IMPORTANCE
Aedes nigromaculis (Ludlow) is a fierce biter and was once the principal pest species throughou~ most of the Central Valley of Cahshyfornia Although it has not been incriminated as a disease vector laboratory experiments show it is capable of transmi~ting s~veral arthropod-borne vuuses mcludshying western equine encephal~~yshyelitis and California encephahhs It was the first mosquito in Calishyfornia to develop resistance to DDT and by the 1970s had beshycome resistant to most organoshyphosphate and organochlorine insecticides Once extremely abundant populations of Ae nigromaculis in California have declined since the late 1970s pershyhaps due to improved water manshyagement practices
[ GEOGRAPHIC DISTRIBUTION )
The range of Ae nigromaculis covers most of the United States west of the Mississippi River north to Manitoba and south to Central Mexico This species was unknown in California prior to 1937 but quickly spread and beshycame the predominant pasture mosquito throughout much of the Central Valley
[ IDENTIFICATION
Larvae have a complete saddle uneven pecten row and the si- phon tuft inserted towards the tip of the siphon Adults have tarsal segments basally ringed with white scales and often a pale me dial ring on the proboscis Aedes
8 U~ geaf4- Spring 1996
Aedes nigromaculis
mgromaculis is considered closely related to Ae sollicitans (Walker) the eastern salt marsh mosquito although no natural hybrids have been reported
[ IMMATURE BIOLOGY
Before human development changed the landscape Ae nigromaculis probably bred m temporary rain pools However as its name implies 1t IS now tJpishycally associated with temporanly flooded irrigated pastures Eggs are commonly laid on clumps of bunch grass A small percentage of eggs require se~eral floodmg and drying cycles m order to hatch Completion of developshyment typically takes six to ten days but can take as little as f~ur days when temperatures are h1gh
Aedes nigromaculis is often found in association with Ae melanimon Dyar The two species differ slightly in their salinity and temperature t~lerance s~ch th~t Ae nigromaculzs predommates m water of somewhat lower salinity during the warm midsummer months and Ae melanimon preshydominates both earlier and later in the season Aedes nigromaculis is able to exploit more ephemeral habitats than Ae melanimon due to ~ somewhat faster developshyment rate
(~~~A~o_uL_T_B_E_H_A_VI_O~R--~) Males emerge before females
and form mating swarms at dawn and dusk Most flight activity
also occurs at dawn and dusk Aedes nigromaculis does not mate willingly in captivity s~ la~orashytory colonies can be ma1~1tamed only by induced copulation
( BLooomiddot FEEDING )
Host preference studies show that Ae nigromaculis feeds preshydominantly on cattle and to a lesser extent on birds dogs horses humans and sheep Feshymales rna y f1 y several miles for a blood meal and readily disperse from breeding habitats in to populated areas when hosts ~re not available nearby Mass disshypersals of 20 to 30 mil~s have been reported This mosqmto IS
known as a vicious day and dusk biter Most females take a blood meal within four days of emershygence-and oviposit about two days after feeding
SEASONALITY
In California Ae nigromaculis is active from April or May through October with as many as 10 generations per seaso~ Peak adult populations occu m July and August This speoes overshywinters as embryonated eggs with diapause apparently trigshygered by decreasing tempe~atures in the fall and is broken by Inshy
creasing temperatures in the spring
Steve Schutz is an fntomologist with the Contra Costa Mosquito and Vector Control District in
Concord California
PURE AND SIMPLE Pump FYFANON ULV directly from our drum to your tank It goes in undiluted - eliminates the potential for costly mixing errors and reduces employee chemical exposure In the new returnable refillable container FYFANON also eliminates triple rinsing and container disposal- What could be easier
Todays FYFANON ULV is better than ever- 96-98 pure and less acutely toxic than resmethrin permethrin fenthion or naled
FYFANON saves you time money and labor Do the math and youll see- FYFANON covers more acres for fewer dollars than any
- competing product
((I CHEMINOVA
FOR ADULT MOSQUITO CONTROL
Cheminova Inc bull 1700 Route 23 bull Suite 210 bull Wayne 1Jew Jersey 07470 bull 800-548-6113
r
IMDllSTJY BEJtT
Cheminova Sandoz and Thomson
Sandoz Appoints Sean Lynch
Sandoz Agro Inc recently apshypointed Sean Lynch as Marketing Services Associate in Sandozs Professional Pest management Division
Lynch will be responsible for managing public relations prodshyuct promotions market research advertising trade shows literashyture fulfillment and direct marketshying The division produces Teknar and Altosid for the control of mosquitoes
Before joining the marketing services department Lynch was a field sales representative for Sandozs Turf amp Ornamental products division
Lynch is a graduate of the Philadelphia College of Textiles and Science where he majored in marketing and minored in fishynance He is a native of Audubon NJ
10 3fUet ~eaU Spring 1996
Thomson Publications of Fresno California has just reshyleased the 1996 Insecticide Herbishycide Fungicide Quick Guide
In the Guide the pesticides are cross-referenced to registered usshyage and by the pests that each mashyterial will control This enables the user to make a general recomshymendation on which material to use in each situation
It sells for $1850 plus tax To order write Thomson publicashytions PO Box 9335 Fresno Calishyfornia 93791 call (209) 435-2163 or FAX (209) 435-8319
Please note the changes in the Cheminova distributor territory map below All bids and product inquiries should be directed to the distributor covering your location
bull Adapco Inc (800) 367-0659
ft Corn belt Chemical v (800) 652-9306
A Northeast Vector Management v (800) 331-7240
ft Van Waters amp Rogers IV (800) 888-4VWR
(iiCHEMINOVA Cheminova Inc 1700 Route 23 Suit9 210 Wayne New Jersey 07 470 800-548-6113
Pro-Mist UL V Sprayers
A Different
Breed Of
Sprayer All Electric bull Ultra Quiet Light Weight bull Modular
Rugged bull Chemically Efficient
FACTORY DIRECT
Beecomist SALES amp SERVICE
Beecomist Systems 3255 Meetinghouse Rd bull Telford PA bull 18969 USA
IN US 800-220-0787 OTHER CALLS 215-721-9424
FAX 215-721-0751
Partiallndex to Articles in Wing Beats
1990 -1995 bull _
Biosynopsis
The Asian Tiger Mosquito Aedes abop ictus Robert Novak Fall1992
The Eastern Saltmarsh Mosquito Aedes sollicitans George F OMeara Winter 1992
The Eastern Treehole Mosquito Aedes triseriatus Ned Walker Summer 1992
The Inland Floodwater MosquitoAedes vexans Susan Palchick Spring 1992
The Western Malaria Mosquito Anopheles freebomi Robert Washino Fall1993
The Quads Anopheles quadrimaculatus Say Paul Kaiser Fall1994
The House Mosquitoes of the USA Culex pipiens complex Harry Savage and Barry Miller Summer 1995
The Western Encephalitis Mosqui to Culex tarsalis William Reisen Summer 1993
The Dark Rice field Mosquito Psorophora columbiae Max Meisch Spring 1994
The Carnivores Toxorhynchites Carl J Jones and Eric Schreiber Winter 1994
Chemline
Adulticides in the 90s- The Changing Picture Carlisle B Rathburn Jr Winter 1990
AerialBti Applications Guy Faget Paul Perdew and Matthew Yates Winter 1992
Confusion in Margalitaville Doug Wassmer Winter 1995
Flashpoint- Fire point- Blastpoint Ed Meehan Winter 1992
Integrated Mosquito Management Henry R Rupp Fall1995
Mosquito Larvicides in the 90s- Status Quo Carlisle B Rathburn Jr Spring 1992
Relative Activity Measurements are the Best Guide toBti Selection Brian Melin Winter 1995
_ _
UL V Flushing Agents Thomas P Breaud and James R Brown Fall 1993
Chip Chat
Electronic Droplet Ana lysis Thomas G Floore and James R Brown Winter 1991
Flight Guidance Recording amp Analysis for Aerial Application Bill Reynolds Mark La tham and Joe Ruff Fall 1995
GIS A New Tool for Mosquito Control William G Guthe Spring 1993
Probe It Tom Floore Summer 1993
Crankcase Eddie
Storing a Two-Cycle Engine Ed Meehan Winter 1993
Faces
New Jerseys Mosquito Queen Judy A Hansen -Jim McNelly Fall1992
T Oscar Fultz Jr A Gentle Man Nancy Lavender Parsons Winter 1991
Women in Mosquito Control Kellie Etherson Spring 1993
Feature
Fatal Attraction for Blood Seekers Jonathan F Day Winter 1990
Flight D Scott Taylor Spring 1995
Macrophotography Admiring the Mosquito Microcosm LE Munstermann Winter 1991
Mosquito and Vector Control Where Do We Go from Here Bruce F Eldridge Winter 1994
Mythical Mosquito Control Lee Mitchell Summer 1992
Planning for Emergency Mosquito Survei lshylance and Control
Continued on page 20
Spring 1996 UI~ 2eatt 11
(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
Ed Meehan operates out of 1220 7th Ave POB9x218 Howard
Lake MN 55349
~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
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Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
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Contact Charlie Cunningham 713-439-6005
Donated Supplies program
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Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
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Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
hreak ButUe wont ls ~ood as our
products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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The Dark Pasture Mosquito
IMPORTANCE
Aedes nigromaculis (Ludlow) is a fierce biter and was once the principal pest species throughou~ most of the Central Valley of Cahshyfornia Although it has not been incriminated as a disease vector laboratory experiments show it is capable of transmi~ting s~veral arthropod-borne vuuses mcludshying western equine encephal~~yshyelitis and California encephahhs It was the first mosquito in Calishyfornia to develop resistance to DDT and by the 1970s had beshycome resistant to most organoshyphosphate and organochlorine insecticides Once extremely abundant populations of Ae nigromaculis in California have declined since the late 1970s pershyhaps due to improved water manshyagement practices
[ GEOGRAPHIC DISTRIBUTION )
The range of Ae nigromaculis covers most of the United States west of the Mississippi River north to Manitoba and south to Central Mexico This species was unknown in California prior to 1937 but quickly spread and beshycame the predominant pasture mosquito throughout much of the Central Valley
[ IDENTIFICATION
Larvae have a complete saddle uneven pecten row and the si- phon tuft inserted towards the tip of the siphon Adults have tarsal segments basally ringed with white scales and often a pale me dial ring on the proboscis Aedes
8 U~ geaf4- Spring 1996
Aedes nigromaculis
mgromaculis is considered closely related to Ae sollicitans (Walker) the eastern salt marsh mosquito although no natural hybrids have been reported
[ IMMATURE BIOLOGY
Before human development changed the landscape Ae nigromaculis probably bred m temporary rain pools However as its name implies 1t IS now tJpishycally associated with temporanly flooded irrigated pastures Eggs are commonly laid on clumps of bunch grass A small percentage of eggs require se~eral floodmg and drying cycles m order to hatch Completion of developshyment typically takes six to ten days but can take as little as f~ur days when temperatures are h1gh
Aedes nigromaculis is often found in association with Ae melanimon Dyar The two species differ slightly in their salinity and temperature t~lerance s~ch th~t Ae nigromaculzs predommates m water of somewhat lower salinity during the warm midsummer months and Ae melanimon preshydominates both earlier and later in the season Aedes nigromaculis is able to exploit more ephemeral habitats than Ae melanimon due to ~ somewhat faster developshyment rate
(~~~A~o_uL_T_B_E_H_A_VI_O~R--~) Males emerge before females
and form mating swarms at dawn and dusk Most flight activity
also occurs at dawn and dusk Aedes nigromaculis does not mate willingly in captivity s~ la~orashytory colonies can be ma1~1tamed only by induced copulation
( BLooomiddot FEEDING )
Host preference studies show that Ae nigromaculis feeds preshydominantly on cattle and to a lesser extent on birds dogs horses humans and sheep Feshymales rna y f1 y several miles for a blood meal and readily disperse from breeding habitats in to populated areas when hosts ~re not available nearby Mass disshypersals of 20 to 30 mil~s have been reported This mosqmto IS
known as a vicious day and dusk biter Most females take a blood meal within four days of emershygence-and oviposit about two days after feeding
SEASONALITY
In California Ae nigromaculis is active from April or May through October with as many as 10 generations per seaso~ Peak adult populations occu m July and August This speoes overshywinters as embryonated eggs with diapause apparently trigshygered by decreasing tempe~atures in the fall and is broken by Inshy
creasing temperatures in the spring
Steve Schutz is an fntomologist with the Contra Costa Mosquito and Vector Control District in
Concord California
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Lynch will be responsible for managing public relations prodshyuct promotions market research advertising trade shows literashyture fulfillment and direct marketshying The division produces Teknar and Altosid for the control of mosquitoes
Before joining the marketing services department Lynch was a field sales representative for Sandozs Turf amp Ornamental products division
Lynch is a graduate of the Philadelphia College of Textiles and Science where he majored in marketing and minored in fishynance He is a native of Audubon NJ
10 3fUet ~eaU Spring 1996
Thomson Publications of Fresno California has just reshyleased the 1996 Insecticide Herbishycide Fungicide Quick Guide
In the Guide the pesticides are cross-referenced to registered usshyage and by the pests that each mashyterial will control This enables the user to make a general recomshymendation on which material to use in each situation
It sells for $1850 plus tax To order write Thomson publicashytions PO Box 9335 Fresno Calishyfornia 93791 call (209) 435-2163 or FAX (209) 435-8319
Please note the changes in the Cheminova distributor territory map below All bids and product inquiries should be directed to the distributor covering your location
bull Adapco Inc (800) 367-0659
ft Corn belt Chemical v (800) 652-9306
A Northeast Vector Management v (800) 331-7240
ft Van Waters amp Rogers IV (800) 888-4VWR
(iiCHEMINOVA Cheminova Inc 1700 Route 23 Suit9 210 Wayne New Jersey 07 470 800-548-6113
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IN US 800-220-0787 OTHER CALLS 215-721-9424
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Partiallndex to Articles in Wing Beats
1990 -1995 bull _
Biosynopsis
The Asian Tiger Mosquito Aedes abop ictus Robert Novak Fall1992
The Eastern Saltmarsh Mosquito Aedes sollicitans George F OMeara Winter 1992
The Eastern Treehole Mosquito Aedes triseriatus Ned Walker Summer 1992
The Inland Floodwater MosquitoAedes vexans Susan Palchick Spring 1992
The Western Malaria Mosquito Anopheles freebomi Robert Washino Fall1993
The Quads Anopheles quadrimaculatus Say Paul Kaiser Fall1994
The House Mosquitoes of the USA Culex pipiens complex Harry Savage and Barry Miller Summer 1995
The Western Encephalitis Mosqui to Culex tarsalis William Reisen Summer 1993
The Dark Rice field Mosquito Psorophora columbiae Max Meisch Spring 1994
The Carnivores Toxorhynchites Carl J Jones and Eric Schreiber Winter 1994
Chemline
Adulticides in the 90s- The Changing Picture Carlisle B Rathburn Jr Winter 1990
AerialBti Applications Guy Faget Paul Perdew and Matthew Yates Winter 1992
Confusion in Margalitaville Doug Wassmer Winter 1995
Flashpoint- Fire point- Blastpoint Ed Meehan Winter 1992
Integrated Mosquito Management Henry R Rupp Fall1995
Mosquito Larvicides in the 90s- Status Quo Carlisle B Rathburn Jr Spring 1992
Relative Activity Measurements are the Best Guide toBti Selection Brian Melin Winter 1995
_ _
UL V Flushing Agents Thomas P Breaud and James R Brown Fall 1993
Chip Chat
Electronic Droplet Ana lysis Thomas G Floore and James R Brown Winter 1991
Flight Guidance Recording amp Analysis for Aerial Application Bill Reynolds Mark La tham and Joe Ruff Fall 1995
GIS A New Tool for Mosquito Control William G Guthe Spring 1993
Probe It Tom Floore Summer 1993
Crankcase Eddie
Storing a Two-Cycle Engine Ed Meehan Winter 1993
Faces
New Jerseys Mosquito Queen Judy A Hansen -Jim McNelly Fall1992
T Oscar Fultz Jr A Gentle Man Nancy Lavender Parsons Winter 1991
Women in Mosquito Control Kellie Etherson Spring 1993
Feature
Fatal Attraction for Blood Seekers Jonathan F Day Winter 1990
Flight D Scott Taylor Spring 1995
Macrophotography Admiring the Mosquito Microcosm LE Munstermann Winter 1991
Mosquito and Vector Control Where Do We Go from Here Bruce F Eldridge Winter 1994
Mythical Mosquito Control Lee Mitchell Summer 1992
Planning for Emergency Mosquito Survei lshylance and Control
Continued on page 20
Spring 1996 UI~ 2eatt 11
(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
Ed Meehan operates out of 1220 7th Ave POB9x218 Howard
Lake MN 55349
~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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Letter-sect t() the ~dit()r-sect
I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
Vero Beach Florida
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
OUt dtiu ~ ~ aHd ~
uWlaquoJ ~cope aHd ~de~ coa a~~~~-
COVERAGES OFFERED
General Liability
Public Officials Liability
PROGRAM ADMINISTRATOR SOUTHWEST ASSURANCE CORPORATION 12730 NEW BRITTANY BLVD SUITE 304 FORT MYERS FLORIDA 33907-3646
(941) 939-7303 FAX (94 1) 939-1485
20 1tJilaquoj ~eat4- Spring 1996
Automobile Liability
Aviation Liability
Aviation Hull (including theft)
Aviation Chemical Liability
Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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20490 E Aschoff Road Rhododendron Oregon 97049
Tete (503) 622-3010 FAX (503) 622-4274
- middot~
middot ~-middot
----
Innovation Performance
-~
Versatility Cost efficiency
PaylQa~ productivi-ty and profits middot
(pportunities middot Assistant Manager Arthropod Control
Department
Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
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products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
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dc-vdoprnent Qt nemiddotw products
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For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
Dimiddotvisio11 8peliulty Pnxlucr lk]xlrtrncnt
One (~vuwnnid PlaUt ll VIlC NJ 07470
(~c~~~~ Specialty Products Department One Cyanamid Plaza Wayne NJ 07470
TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
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bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
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LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
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PURE AND SIMPLE Pump FYFANON ULV directly from our drum to your tank It goes in undiluted - eliminates the potential for costly mixing errors and reduces employee chemical exposure In the new returnable refillable container FYFANON also eliminates triple rinsing and container disposal- What could be easier
Todays FYFANON ULV is better than ever- 96-98 pure and less acutely toxic than resmethrin permethrin fenthion or naled
FYFANON saves you time money and labor Do the math and youll see- FYFANON covers more acres for fewer dollars than any
- competing product
((I CHEMINOVA
FOR ADULT MOSQUITO CONTROL
Cheminova Inc bull 1700 Route 23 bull Suite 210 bull Wayne 1Jew Jersey 07470 bull 800-548-6113
r
IMDllSTJY BEJtT
Cheminova Sandoz and Thomson
Sandoz Appoints Sean Lynch
Sandoz Agro Inc recently apshypointed Sean Lynch as Marketing Services Associate in Sandozs Professional Pest management Division
Lynch will be responsible for managing public relations prodshyuct promotions market research advertising trade shows literashyture fulfillment and direct marketshying The division produces Teknar and Altosid for the control of mosquitoes
Before joining the marketing services department Lynch was a field sales representative for Sandozs Turf amp Ornamental products division
Lynch is a graduate of the Philadelphia College of Textiles and Science where he majored in marketing and minored in fishynance He is a native of Audubon NJ
10 3fUet ~eaU Spring 1996
Thomson Publications of Fresno California has just reshyleased the 1996 Insecticide Herbishycide Fungicide Quick Guide
In the Guide the pesticides are cross-referenced to registered usshyage and by the pests that each mashyterial will control This enables the user to make a general recomshymendation on which material to use in each situation
It sells for $1850 plus tax To order write Thomson publicashytions PO Box 9335 Fresno Calishyfornia 93791 call (209) 435-2163 or FAX (209) 435-8319
Please note the changes in the Cheminova distributor territory map below All bids and product inquiries should be directed to the distributor covering your location
bull Adapco Inc (800) 367-0659
ft Corn belt Chemical v (800) 652-9306
A Northeast Vector Management v (800) 331-7240
ft Van Waters amp Rogers IV (800) 888-4VWR
(iiCHEMINOVA Cheminova Inc 1700 Route 23 Suit9 210 Wayne New Jersey 07 470 800-548-6113
Pro-Mist UL V Sprayers
A Different
Breed Of
Sprayer All Electric bull Ultra Quiet Light Weight bull Modular
Rugged bull Chemically Efficient
FACTORY DIRECT
Beecomist SALES amp SERVICE
Beecomist Systems 3255 Meetinghouse Rd bull Telford PA bull 18969 USA
IN US 800-220-0787 OTHER CALLS 215-721-9424
FAX 215-721-0751
Partiallndex to Articles in Wing Beats
1990 -1995 bull _
Biosynopsis
The Asian Tiger Mosquito Aedes abop ictus Robert Novak Fall1992
The Eastern Saltmarsh Mosquito Aedes sollicitans George F OMeara Winter 1992
The Eastern Treehole Mosquito Aedes triseriatus Ned Walker Summer 1992
The Inland Floodwater MosquitoAedes vexans Susan Palchick Spring 1992
The Western Malaria Mosquito Anopheles freebomi Robert Washino Fall1993
The Quads Anopheles quadrimaculatus Say Paul Kaiser Fall1994
The House Mosquitoes of the USA Culex pipiens complex Harry Savage and Barry Miller Summer 1995
The Western Encephalitis Mosqui to Culex tarsalis William Reisen Summer 1993
The Dark Rice field Mosquito Psorophora columbiae Max Meisch Spring 1994
The Carnivores Toxorhynchites Carl J Jones and Eric Schreiber Winter 1994
Chemline
Adulticides in the 90s- The Changing Picture Carlisle B Rathburn Jr Winter 1990
AerialBti Applications Guy Faget Paul Perdew and Matthew Yates Winter 1992
Confusion in Margalitaville Doug Wassmer Winter 1995
Flashpoint- Fire point- Blastpoint Ed Meehan Winter 1992
Integrated Mosquito Management Henry R Rupp Fall1995
Mosquito Larvicides in the 90s- Status Quo Carlisle B Rathburn Jr Spring 1992
Relative Activity Measurements are the Best Guide toBti Selection Brian Melin Winter 1995
_ _
UL V Flushing Agents Thomas P Breaud and James R Brown Fall 1993
Chip Chat
Electronic Droplet Ana lysis Thomas G Floore and James R Brown Winter 1991
Flight Guidance Recording amp Analysis for Aerial Application Bill Reynolds Mark La tham and Joe Ruff Fall 1995
GIS A New Tool for Mosquito Control William G Guthe Spring 1993
Probe It Tom Floore Summer 1993
Crankcase Eddie
Storing a Two-Cycle Engine Ed Meehan Winter 1993
Faces
New Jerseys Mosquito Queen Judy A Hansen -Jim McNelly Fall1992
T Oscar Fultz Jr A Gentle Man Nancy Lavender Parsons Winter 1991
Women in Mosquito Control Kellie Etherson Spring 1993
Feature
Fatal Attraction for Blood Seekers Jonathan F Day Winter 1990
Flight D Scott Taylor Spring 1995
Macrophotography Admiring the Mosquito Microcosm LE Munstermann Winter 1991
Mosquito and Vector Control Where Do We Go from Here Bruce F Eldridge Winter 1994
Mythical Mosquito Control Lee Mitchell Summer 1992
Planning for Emergency Mosquito Survei lshylance and Control
Continued on page 20
Spring 1996 UI~ 2eatt 11
(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
Ed Meehan operates out of 1220 7th Ave POB9x218 Howard
Lake MN 55349
~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
Vero Beach Florida
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
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Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
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AN ITCI-1 TO
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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Lynch will be responsible for managing public relations prodshyuct promotions market research advertising trade shows literashyture fulfillment and direct marketshying The division produces Teknar and Altosid for the control of mosquitoes
Before joining the marketing services department Lynch was a field sales representative for Sandozs Turf amp Ornamental products division
Lynch is a graduate of the Philadelphia College of Textiles and Science where he majored in marketing and minored in fishynance He is a native of Audubon NJ
10 3fUet ~eaU Spring 1996
Thomson Publications of Fresno California has just reshyleased the 1996 Insecticide Herbishycide Fungicide Quick Guide
In the Guide the pesticides are cross-referenced to registered usshyage and by the pests that each mashyterial will control This enables the user to make a general recomshymendation on which material to use in each situation
It sells for $1850 plus tax To order write Thomson publicashytions PO Box 9335 Fresno Calishyfornia 93791 call (209) 435-2163 or FAX (209) 435-8319
Please note the changes in the Cheminova distributor territory map below All bids and product inquiries should be directed to the distributor covering your location
bull Adapco Inc (800) 367-0659
ft Corn belt Chemical v (800) 652-9306
A Northeast Vector Management v (800) 331-7240
ft Van Waters amp Rogers IV (800) 888-4VWR
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Partiallndex to Articles in Wing Beats
1990 -1995 bull _
Biosynopsis
The Asian Tiger Mosquito Aedes abop ictus Robert Novak Fall1992
The Eastern Saltmarsh Mosquito Aedes sollicitans George F OMeara Winter 1992
The Eastern Treehole Mosquito Aedes triseriatus Ned Walker Summer 1992
The Inland Floodwater MosquitoAedes vexans Susan Palchick Spring 1992
The Western Malaria Mosquito Anopheles freebomi Robert Washino Fall1993
The Quads Anopheles quadrimaculatus Say Paul Kaiser Fall1994
The House Mosquitoes of the USA Culex pipiens complex Harry Savage and Barry Miller Summer 1995
The Western Encephalitis Mosqui to Culex tarsalis William Reisen Summer 1993
The Dark Rice field Mosquito Psorophora columbiae Max Meisch Spring 1994
The Carnivores Toxorhynchites Carl J Jones and Eric Schreiber Winter 1994
Chemline
Adulticides in the 90s- The Changing Picture Carlisle B Rathburn Jr Winter 1990
AerialBti Applications Guy Faget Paul Perdew and Matthew Yates Winter 1992
Confusion in Margalitaville Doug Wassmer Winter 1995
Flashpoint- Fire point- Blastpoint Ed Meehan Winter 1992
Integrated Mosquito Management Henry R Rupp Fall1995
Mosquito Larvicides in the 90s- Status Quo Carlisle B Rathburn Jr Spring 1992
Relative Activity Measurements are the Best Guide toBti Selection Brian Melin Winter 1995
_ _
UL V Flushing Agents Thomas P Breaud and James R Brown Fall 1993
Chip Chat
Electronic Droplet Ana lysis Thomas G Floore and James R Brown Winter 1991
Flight Guidance Recording amp Analysis for Aerial Application Bill Reynolds Mark La tham and Joe Ruff Fall 1995
GIS A New Tool for Mosquito Control William G Guthe Spring 1993
Probe It Tom Floore Summer 1993
Crankcase Eddie
Storing a Two-Cycle Engine Ed Meehan Winter 1993
Faces
New Jerseys Mosquito Queen Judy A Hansen -Jim McNelly Fall1992
T Oscar Fultz Jr A Gentle Man Nancy Lavender Parsons Winter 1991
Women in Mosquito Control Kellie Etherson Spring 1993
Feature
Fatal Attraction for Blood Seekers Jonathan F Day Winter 1990
Flight D Scott Taylor Spring 1995
Macrophotography Admiring the Mosquito Microcosm LE Munstermann Winter 1991
Mosquito and Vector Control Where Do We Go from Here Bruce F Eldridge Winter 1994
Mythical Mosquito Control Lee Mitchell Summer 1992
Planning for Emergency Mosquito Survei lshylance and Control
Continued on page 20
Spring 1996 UI~ 2eatt 11
(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
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~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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Letter-sect t() the ~dit()r-sect
I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
Vero Beach Florida
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Department
Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
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years middotue could q(t(n-d to tulw a little
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products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
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For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
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TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
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L has been our
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Together we have reached
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~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
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Partiallndex to Articles in Wing Beats
1990 -1995 bull _
Biosynopsis
The Asian Tiger Mosquito Aedes abop ictus Robert Novak Fall1992
The Eastern Saltmarsh Mosquito Aedes sollicitans George F OMeara Winter 1992
The Eastern Treehole Mosquito Aedes triseriatus Ned Walker Summer 1992
The Inland Floodwater MosquitoAedes vexans Susan Palchick Spring 1992
The Western Malaria Mosquito Anopheles freebomi Robert Washino Fall1993
The Quads Anopheles quadrimaculatus Say Paul Kaiser Fall1994
The House Mosquitoes of the USA Culex pipiens complex Harry Savage and Barry Miller Summer 1995
The Western Encephalitis Mosqui to Culex tarsalis William Reisen Summer 1993
The Dark Rice field Mosquito Psorophora columbiae Max Meisch Spring 1994
The Carnivores Toxorhynchites Carl J Jones and Eric Schreiber Winter 1994
Chemline
Adulticides in the 90s- The Changing Picture Carlisle B Rathburn Jr Winter 1990
AerialBti Applications Guy Faget Paul Perdew and Matthew Yates Winter 1992
Confusion in Margalitaville Doug Wassmer Winter 1995
Flashpoint- Fire point- Blastpoint Ed Meehan Winter 1992
Integrated Mosquito Management Henry R Rupp Fall1995
Mosquito Larvicides in the 90s- Status Quo Carlisle B Rathburn Jr Spring 1992
Relative Activity Measurements are the Best Guide toBti Selection Brian Melin Winter 1995
_ _
UL V Flushing Agents Thomas P Breaud and James R Brown Fall 1993
Chip Chat
Electronic Droplet Ana lysis Thomas G Floore and James R Brown Winter 1991
Flight Guidance Recording amp Analysis for Aerial Application Bill Reynolds Mark La tham and Joe Ruff Fall 1995
GIS A New Tool for Mosquito Control William G Guthe Spring 1993
Probe It Tom Floore Summer 1993
Crankcase Eddie
Storing a Two-Cycle Engine Ed Meehan Winter 1993
Faces
New Jerseys Mosquito Queen Judy A Hansen -Jim McNelly Fall1992
T Oscar Fultz Jr A Gentle Man Nancy Lavender Parsons Winter 1991
Women in Mosquito Control Kellie Etherson Spring 1993
Feature
Fatal Attraction for Blood Seekers Jonathan F Day Winter 1990
Flight D Scott Taylor Spring 1995
Macrophotography Admiring the Mosquito Microcosm LE Munstermann Winter 1991
Mosquito and Vector Control Where Do We Go from Here Bruce F Eldridge Winter 1994
Mythical Mosquito Control Lee Mitchell Summer 1992
Planning for Emergency Mosquito Survei lshylance and Control
Continued on page 20
Spring 1996 UI~ 2eatt 11
(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
Ed Meehan operates out of 1220 7th Ave POB9x218 Howard
Lake MN 55349
~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
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Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
hreak ButUe wont ls ~ood as our
products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
nwsqzdwe~ Betterf(n- the enbulleironrnent
cvunwnid i connnittcd to the
pursuit l~f new tecuwlop_v and the
dc-vdoprnent Qt nemiddotw products
i)o iebullhen il cYmzcs to mosquito control
middott~bulle ~ee on(bull just scratched the surface
For more i-lf(n7nution cm CyuHwnuf
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American (~Yntarnid Wricultwnll~TXhlctr
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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(ankcase Eddie Memphis Belle
~ I dont know if you remember
the movie Memphis Belle but it was about an American bomber during World War II There were a lot of scenes showing the planes flying through flak so thick you would think all the planes would be hit-and many of them were
I couldnt help but relate this to a mosquito trying to fly through an aerosol cloud How many droplets (or flak) were out there and what were the chances of getting through without hitting or being hit by a droplet The inshytrigue and challenge was too great so I had to pull out my trusty slide rule and go to work While mathematics may be borshying stick with this and I think youll find some interesting anshyswers
The question is when sprayshying how many aerosol droplets of a certain size are in a certain area say 1 cubic foot or 1 cubic inch To do this we have to make some assumptions that we all know are not perfectly accurate-but will give us some idea We will asshysume all the droplets are the same diameter in this example 15 mishycrons that our aerosol cloud is of uniform density and covers our swath width evenly to a depth of 16 feet Now we have to switch to the metric system but for this project we only need to know that 1 fluid ounce (oz ) is 2854 cc (cubic centimeters) Lastly we assume the formulation we disshypense will be 43 oz I min at 10 mph and covers exactly a 300 ft swath
12 U~ geltW Spring 1996
I think we all have been through the calculations that at 43 oz I min at 10 mph and a 300 ft swath we are putting out 06666 oz per acre I wont go through that math again We know that there are 43560 square feet per acre and if we fill that acre to a depth of 16ft (we multishyply those two numbers) we come up with a treated area of 696960 cubic feet There are 1728 cubic inches in a cubic foot so that gives us 1204346880 cubic inches in our treated area
In the above figure we are talking over 1 billion cubic inches As we proceed our numbers are going to get somewhat lengthy so just in case you have forgotten your numeration progressions the following may help
Number Name Scientific notation
1000 thousand 10
1000000 mill ion 10
1000000000 bill ion 10
1000000000000 ritlion 10
1000000000000000 quadrill ion 10
1000000000000000000 quintillion IQi~
1ooooooooooooooo oooooo sex tilli on jQl l
I 000000000000000000000000 octill ion 10
nonillion lOll
CC eC decillion IG-
and so on undecillion duoshydecillion tredecillion quattuorshydecillion quindecillion sexdecillion septendecillion octodecillion novemdecillion vigintillion-by now you cant get all the zeros printed sideways on a roll of fax paper
To know how many 15 micron size droplets are in a cubic inch we have to first know the volume of one droplet Since a small drop traveling through the atmosphere
tends to be sphericat the formula to calculate this is (note that as our numbers get too long to use we have to calculate using scienshytific notation-but I ll print out the long number for you once in a while)
Volume of one 15 micron drop =1 I 6 d3 [1 6 times pi times the diameter cubed]=
V=016666 X 31414 (15 X 10-4) 3
V=05236 X 3375 X 10-12
V=176715 x 10-12 or in other words 000000000176715
Remember back a ways we said there were 2954 cc per oz Welt the above number tells us there is 000000000176715 of one cc in a 15 micron droplet Since we assume one cc and one millilishyter to be the same dividing this number intp one ml means there are 565903956 drops of 15 micron size per ml There are 2954 ml per oz so there are 1666760064024 (over 16 billion) droplets of 15 micron size in one ounce of formulation
Since we are using 06666 ounces per 16 acre feet that means there are 11110622586 (over 11 billion) droplets of 15 micron size in that 16 ft acre If we divide 11)10622586 drops by 696960 cubic feet we find there are 15941 droplets of 15 micron size per cubic foot or 9 drops per cubic inch Remember this only holds true for the flow rate and other parameters we established at the start of this
But what is the right sized droplet to use If we lower our
d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
Ed Meehan operates out of 1220 7th Ave POB9x218 Howard
Lake MN 55349
~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
Vero Beach Florida
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
OUt dtiu ~ ~ aHd ~
uWlaquoJ ~cope aHd ~de~ coa a~~~~-
COVERAGES OFFERED
General Liability
Public Officials Liability
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Automobile Liability
Aviation Liability
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
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ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
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Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
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Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
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AFTER FOUR
DECADES 0~~
OSQUITO
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ST I_JL HAVE
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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d roplet size from 15 to 14 mi-c rons just one micron our num-
er of drops per cc increases from 65930956 to 696378830 That is lmost 4 billion more drops per a
0
d unce To go further a 10 micron roplet probably has plenty of
nsecticide in it to kill the mos-uito so why not make the drop-q
1 w w
ets smaller As a matter of fact e know that thermal foggers hich put out 1 and 2 micro rops do an excellent job of con-d
t A rol so why not lower it to that
look at the following table
Droplet size Drops per (microns) cubic centimeter
15 565930956
14 696378830
10 1909854800
shows what effect reducing the droplet size has our droplet count
My slide stick fell out but I think are a little over 7 trillion 2-micro drops per ounce Push that ounce to a gallon and we get about one quadrillion ie (1000000000000000 drops per gal)
See isnt math fun I think you start to get the picture but just to make sure hold up your left hand and put your thumb and
Drops per Drops per Drops per ounce cubic foot cubic inch
16717600440 15941 9
20571030638 19674 11
56417110792 53959 31
pointy finger about an inch apart-like you were measuring an inch Now imagine that inch as a cube and imagine 9 11 31 or 132 drops in that cube What Las Vegas odds would you give on flying through all that flak withshyout hitting a drop if you were a mosquito
2 2392324449761 billions and billions 228813 132
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~___o_op_s_ ~) There were some errors in the
article Confusion in Margalitaville by Doug Wassmer which appeared in the Winter 1995 issue of Wing Beats
In Table 1 on page 16 under Bactimos Briquets the AA U I mg
should be 1750 rather than 700 the ITU I mg should be 700 rather than 280 the AA U I lb should be 794 rather than 636 (these values were incorrect because ITU~ were mistaken for AAUs)
In Table 2 on page 17 also unshyder Bactimos Briquets the maxishymum AAUs acre should be 1320 rather than 132 (a typo)
AT LAST I
In Table 3 on page 18 again under Bactimos Briquets the minimum cost acre should be $1016 rather than $1089 and the maximum cost acre should be $4064 rather than $4356 In the original article I had calculated the first four costs in table 3 for a $070 briquet and the last two costs for a $075 briquet Here all are based on $070
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I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
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There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
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32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
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Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
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Contact Charlie Cunningham 713-439-6005
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Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
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Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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Letter-sect t() the ~dit()r-sect
I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
Vero Beach Florida
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Waterproof rugged and durable Highly sensitive built-in antenna
- Up to 17 hours of continuous battery life on 4 AA alkaline batteries
Hand held lightweight only 10 ounces 66H X 8 3W X 1030
0 - 14 F to 140 F-10 C to sodegC operating temperature range
Optional Accessories - Swivel mounting bracket for any vehicle
External power module Instructional video Carry case
Price $24900 each
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
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AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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Letter-sect t() the ~dit()r-sect
I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
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Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
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Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
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AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
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years middotue could q(t(n-d to tulw a little
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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I enjoyed the excellent article Seven Ways to a Successful Dipshyping Career in Wing Beats but thought it would be useful to point out there is another way to dip for mosquitoes other than usshying a dipper John Belkin and I used a small insect net about 512 inches in diameter and about 8 inches deep made of fine mesh You can use all the techniques that Claudia OMalley suggests and you can collect a lot more larshyvae When you take the net out of the water you empty the contents into a small white plastic bowl (with some water in it) Then you can pick out what you want This net is easier to carry than the regular enamel or plastic dipper I use an old auto collapsible radio antenna for the net handle so my whole collecting kit fits into a little pouch that I can carry on my belt
~~PhD Gainesville Florida
In Lawrence Kase s Winter 1995 Wing Beats letter to the edishytor he mentioned a point in the article Bti Revisited by Dr Emile Van Handel Doug Wassmer and Doug Carlson concerning the fact that since Bti is heavier than washyter it has a tendency to settle out in sediments thus being available to the larvae for only a short peshyriod The Wing Beats article stated that a possible formulation improvement which would mimic the release profile of the 1960s Paris Green vermiculite marble dust formulation would be benshyeficial This formulation was deshyveloped by Dr AJ Rogers and
16 1flw- 1ieltW Spring 1996
h a lets
BW Clements then at the Florida Medical Entomology Laboratory in Vero Beach
The problem with any floating granule used to dispense a stomshyach poison which is heavier than water is that if release of the toxishycant to the water is not immedishyate even light winds can blow the granules to the side of the area to be treated thus providing uneven distribution of the chemical In the case of Paris Green this could be readily observed by a green color band on the water bottom next to the shore To solve this problem Rogers and Clements devised a formulation of vermicushylite Paris Green and marble dust stuck together with an oil-surfacshytant release agent mix The amount of marble dust used was sufficient to sink about Y2of the granules As they sank Paris Green and marble dust were reshyleased until equilibrium was achieved They then rose back to the surface thus treating most of the water column This situation allowed for maximum exposure of the mosquito larvae to the larshyvicide Meanwhile the granules remaining on the surface were releasing Paris Green and marble dust as they moved about on the water surface The Wing Beat authors stated that a Bti formushylation with similar release characshyteristics would be a valuable mosquito control tool
In Mr Kase s letter he points out that in his opinion such a Bti product already exists - it is Bactimos Briquets Howshyever valuable a tool Bactimos Bri-
see
quets may be in some situations they do not function like Paris Green did However they do share one of the same problems as Paris Green unless anchored they can be influenced by wind The authors of Bti Revisited may have been remiss in not pointing out that a floating slowshyrelease product exists for limited container-type applications What the authors should have stated in the article was that there is a continued need for a Paris Green-like releasing product for broad-scale applications For those of us in operational mosshyquito control the primary targets justifying our existence are typishycally mosquitoes produced from large areas such as marshes passhytures and agricultural areas where mosquitoes like Aedes taeniorhync~us and Psorophora columbiae are produced in huge numbers and where briquettes are of no use For adequate larval control in these situations aerial applications frequently using granular materials to provide conshytrol in densely vegetated areas are essential To the best of our knowledge there still is no Bti formulation with a release profile like Paris Green available for broad scale use So the authors did not ignore and try to reinshyvent Summit Bactimos Briquets they simply suggested the continshyued need for a Bti product which releases similarly to the old Paris Green that can be apshyplied aerially to large areas
~~amp floht~
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
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Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
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Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
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AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
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years middotue could q(t(n-d to tulw a little
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products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
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Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
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Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
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AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
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Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
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LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
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Paradise Gained The Ritual
There is an air war going on in southwest Florida It s 2 am and the DC-3s are rolling on the tarmac on their way to southern targets There are four of t~1em today the invasion is heav1er and more widespread than normal Slowly they lift off runway 13 onemiddot then another and another Each proceeds to its designated area and at 300 feet above ground levet began spraying adulticides with a two-mile separation beshytween aircraft using 1000-foot swaths It s a short 5-minute flight to most hot zones and the mission will last no more than two hours Then for Chief Pilot Chuck Roderick and his crews it s back to the hanger to await the casualty reports
Its now 645 am and the hand-held radio crackles in the ear of Assistant Director for Opshyerations Don Hogan The reports from the field inspectors under the direction of Chief Inspector Johnny Appezzato are coming in via air waves Marco Island 0 2 0 1 0 and then East Naples 0 0 2 1 and on and on The reports are the same fror_n all target areas few or no mosqmshytoes reported landing on inspecshytors at sites which just yesterday yielded 10 15 and even 25 per minute-excellent control At 830 am entomologist Craig Bonvechio walks in with a handshyful of data sheets and a satisfied look on his face As Hogan reads the reports the satisfaction spreads to his face Its the same story in the 38 light trap collec-
18 W~ ~ Spring 1996
tions operated every night during the annual campaign-excellent control where treatments were made There is only one small
area in the southeast part of the District Henderson Creek where one trap collection of 960 Mansoshynia and 288 Psorophora spoil the perfect record
Reviewing the data Director Dr Frank Van Essen and Hogan quickly decide to send one Hughes 500D to Henderson Creek tonight to clean up five square miles with adulticide As usuat by 10 am the critical mos~uito control business of the day 1s done and soon TV radio airport authorities and law enforcement ag~ncies throughout the area will be notified when and where the aircraft will be operating tonight and tomorrow morning
So goes the daily ritual a_t th_e Collier Mosquito Control D1stnct in Naples Florida The ritual has
by~~ PhD
proven adequate to keep the enshyemy at bay for another day at least The enemy today was the salt marsh mosquito Aedes taeniorhynchus Tomorrow it may be Psorophora or the encephalitisshytransmitting Culex nigripalpus No matter this group of experienced professionals knows the~r enemy and the terrain They w1ll be ready
Ignorant Delight
It s been an early day for Hogan and-I cant resist-his heros but the reward is getting off work at 230 to enjoy the long warm summer days of southwest Florida doing the things Yankees only dream about air boating swamp buggy racing fishing golfing and flying year-round and above all racing stock cars
As the residents and visitors rise to go about their activities
Continued on page 21
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
OUt dtiu ~ ~ aHd ~
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COVERAGES OFFERED
General Liability
Public Officials Liability
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20 1tJilaquoj ~eat4- Spring 1996
Automobile Liability
Aviation Liability
Aviation Hull (including theft)
Aviation Chemical Liability
Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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20490 E Aschoff Road Rhododendron Oregon 97049
Tete (503) 622-3010 FAX (503) 622-4274
- middot~
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Innovation Performance
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Versatility Cost efficiency
PaylQa~ productivi-ty and profits middot
(pportunities middot Assistant Manager Arthropod Control
Department
Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
hreak ButUe wont ls ~ood as our
products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
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pursuit l~f new tecuwlop_v and the
dc-vdoprnent Qt nemiddotw products
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For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
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TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
bull DIRECT DRIVE POWER TRAIN
eliminates belt problems reduces vibration
bull COMPACT CONSTRUCTION means less weight and less space required for installation
bull NON-CORROSIVE INSECTICIDE CONTROL VALVES for trouble-free operation
bull OPTIONAL CONTROL SYSTEMS to meet varied requirements
bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
ULV MODEL P1 for indoor and outdoor use
ULV MODEL MINI II for indoor and outdoor use
MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL
Pumping-SyStemmiddotmiddot bull ACcuracy
Any source of error in our spray applications is a matter for concern As Ed Meehan pointed out in a Winter 1995 Wing Beats article Air Eddie variation in the speed of the vehicle is one such source Another is found in the pumping system of the sprayer
In the accompanying chart you can see the change in flow proshyduced by an FMI lab pump when there is a change in the voltage supplied to the pump For this test the insecticide pump was set to a flow of 40 oz min when the voltage was 120 vdc Then the woltage was adjusted up and
own while the flow was meashysured The test liquid was a comshymonly used petroleum-oil diluent Bio-Blend 8
In the real world when low engine speeds occur and accessoshyries such as auxiliary lights are operating the voltage at the pump can easily fall to 11 vdc or
less Then as seen in the figure the pump delivers only 36 oz min a 10 decrease At the other extreme if the truck or the sprayers battery is being charged at full rate the voltage at the pump can be 15 vdc Then the pump delivers 488 oz min a 22 increase (see figure again) So the output of the sprayers pump can range between 22 more than you want and 10 less than you want
This situation has several unshydesirable consequences First is an application rate that may conshytribute to resistance and be inefshyfective because it is too low Secshyond is an application that wastes insecticide or is outside the limits of the label because it is too high
Calculate the dollar cost of waste Assume you pay $3500 gallon for a finished mixture If you spray at 4 oz min and the flow error is + 22 then you waste $2444 each hour that you
5-------------------------- spray If you spray about 7 hours a night then you lose $100 a night 48
c-46 E N 44 0 42
Probably anything that you can do to eliminate such an error will pay for itself For instance supshypose you pay $500 to in-pound 4
_Q 38 L1
Pump Flow wllh Controller Stall electrical cirCUity that
~36
r 34
32
3~~----~----~----~----~~ 11 vdc 12 vdc 13 vdc 14 vdc 15 vdc
Voltage Supplied To Pump
will force the FMI pump to deliver a constant amount of liquid no matter the voltage or viscosity or fricshytion At $100 per night this circuitry could pay for itself in one week
Any pump-controlling circuitry must do more than just control the voltage supplied to the pump In the chart notice that the slanted line is not straight Between 11 vdc and 12 vdc the liquid flow increased by 04 oz min but beshytween 14 vdc and 15 vdc flow inshycreased by only 02 oz min Mostly this difference results from increasing friction at higher flows The important point is that the controller must look at the speed of the FMI pump and keep it constant (plusmn1 -2 ) a so-called negative feedback system
The CCF controller from Beecomist Systems is such a sysshytem With that installed an applishycator need not be concerned about duplicating exactly the conditions of spraying w hen calibrating the insecticide pump Engine speed truck gear accessory equipment insecticide viscosity density and surface tension wont affect the flow of insecticide
A pump speed controller proshyvides reliable accuracy as well as quick return on investment It can be added to any insecticide deHvery system that has a deshypowered metering pump such as the the FMI lab pump
r Philip Rudolph PhD is
middotTechnical Director for middotBeecomist Systems Inc in Telford Penn~ylvania and may be contactedmiddot there at 800-220-078 7 - - ~
Spring 1996 21J9 geaa 19
Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
OUt dtiu ~ ~ aHd ~
uWlaquoJ ~cope aHd ~de~ coa a~~~~-
COVERAGES OFFERED
General Liability
Public Officials Liability
PROGRAM ADMINISTRATOR SOUTHWEST ASSURANCE CORPORATION 12730 NEW BRITTANY BLVD SUITE 304 FORT MYERS FLORIDA 33907-3646
(941) 939-7303 FAX (94 1) 939-1485
20 1tJilaquoj ~eat4- Spring 1996
Automobile Liability
Aviation Liability
Aviation Hull (including theft)
Aviation Chemical Liability
Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
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middot lsolair ofters ~y-stems that l6bkand p~rforn - middotmiddot - middot - middot -
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20490 E Aschoff Road Rhododendron Oregon 97049
Tete (503) 622-3010 FAX (503) 622-4274
- middot~
middot ~-middot
----
Innovation Performance
-~
Versatility Cost efficiency
PaylQa~ productivi-ty and profits middot
(pportunities middot Assistant Manager Arthropod Control
Department
Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
hreak ButUe wont ls ~ood as our
products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
nwsqzdwe~ Betterf(n- the enbulleironrnent
cvunwnid i connnittcd to the
pursuit l~f new tecuwlop_v and the
dc-vdoprnent Qt nemiddotw products
i)o iebullhen il cYmzcs to mosquito control
middott~bulle ~ee on(bull just scratched the surface
For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
Dimiddotvisio11 8peliulty Pnxlucr lk]xlrtrncnt
One (~vuwnnid PlaUt ll VIlC NJ 07470
(~c~~~~ Specialty Products Department One Cyanamid Plaza Wayne NJ 07470
TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
bull DIRECT DRIVE POWER TRAIN
eliminates belt problems reduces vibration
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bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
ULV MODEL P1 for indoor and outdoor use
ULV MODEL MINI II for indoor and outdoor use
MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
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Continued from page 11
RogerS Nasci and Chester G Moore Fall1993
The Hermaphroditic Menace to Mosquitoes D Scott Taylor Fall1992
Field Forum
Bleeding Chickens Single-Handedly Brooks Cook Fall1992
Controlling Tigers in Tire Piles Guy M Faget Paul Perdew and Matthew Yates Spring 1992
Detecting Aerially Applied Bti Matt Yates and Guy Fa get Winter 1991
Ground UL V Larviciding Peter H Connelly Fall1993
Mosquito Abatement on Carolina Dredge Disshyposal Islands Ken Sholar Summer 1993
Saginaw Ditch Gun Tom Burt Roger Harris and Mark Harten Fall 1992
Small Scale Fish Farm Barbara Wilder Spring 1992
Fly Wheels
A Bear of a Machine- VecTecs Grizzly Jim Robinson Winter 1994
Pro-Mist 25 Back to the Future Jim Robinson John Beidler and Joe Ruff Spring 1993
Rokon All Terrain Tractor Michael Morrison Fall1995
The Big Green Machine Jim Robinson and Joe Ruff Winter 1990
From a Distance
No Olympic Medals for Mosquitoes Roger Eritja and Carlos Aranda Winter 1992
The Mozzies of Oz Pat Dale Summer 1993
Going Public
Communicating Pesticide Risks- A Primer Robert K D Peterson and Dr Leon G Higley Summer1994
Making Society Mosquito-Wise Neil WilkinsonSpring 1991
Public Education at a Nature Center Sheryl Ayler Fall1995
Recreation Tourists and (yuck) Bugs Carl J Jones Spring 1995
Industry Beat
Culigel Technology New Approaches to Pest Management Richard Levy Fall 1993
Re-registration Costs Leave Mosquito Control Few Options Therese St Peter and Allen Smith Winter 1995
Leading Edge
Diet Pill Stu Borman Winter 1993
RADAR A Cure for Your Rainy Day Blues Scott Ritchie Spring 1991
Lines of Flight
Helicopter Lease or Purchase Richard D Huggins Summer 1992
Natures Way
Fish Fry Factory Bob Coykendall and Steve Abshier Winter 1992
Larva Pupa and Metamorphosis Robert E Snodgrass Fall1995
Mosquito vs Mosquito J David Miller Summer 1991
AMMIAINC
On the Books
Anti-Mosquito Buzzers Advertising and the Law C F Curtis Winter 1994
EPA onBti Robert I Rose Winter 1995
The Pesticide Industry and Regulation John M Johnson and George W Ware Spring 1992
Pest Asides
A Capital Program Charlie Morris Spring 1995
Why Mosquito Donald R Johnson Spring 1992
Program Profile
California Research Control Through Cooperation Bruce F Eldridge Summer 1991
The New Jersey State Mosquito Control Program Robert B Kent Summer 1994
Source Reduction
Mosquito Control for Stormwater Managers john C Gamble Summer 1992
Seven Ways to a Successful Dipping Career Claudia O Malley Winter 1995
Vector Bearings
Arbovirus Surveillance for the Non-Specialist An Overview Donald A Shr9yer Summer 1994
Delusory Parasitosis- What They See is What You Get David Shangle Spring 1995
Why Mosquitoes Cannot Transmit AIDS Wayne J Crans Spring 1994
OUt dtiu ~ ~ aHd ~
uWlaquoJ ~cope aHd ~de~ coa a~~~~-
COVERAGES OFFERED
General Liability
Public Officials Liability
PROGRAM ADMINISTRATOR SOUTHWEST ASSURANCE CORPORATION 12730 NEW BRITTANY BLVD SUITE 304 FORT MYERS FLORIDA 33907-3646
(941) 939-7303 FAX (94 1) 939-1485
20 1tJilaquoj ~eat4- Spring 1996
Automobile Liability
Aviation Liability
Aviation Hull (including theft)
Aviation Chemical Liability
Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
bullbullbullbull
middot lsolair ofters ~y-stems that l6bkand p~rforn - middotmiddot - middot - middot -
- middotbull
bull
middot like _an intemiddotgral part of yo~middotr helicopt~r middot middot middot middot middot middot - -middot ~ - middot - middotmiddot -
~- - _
middot ~ bull I bull bull bull
Our goal is to provide youmiddot wi1hthe middotmiddot middot middot middot middot middotmiddot - middot
- ~ middot
equipment you n~eci to get ) he jo-b doh~ middot-middot middot
middot middot -
With middotisltgtlair youmiddotmiddot can expect
-~
middot - -
middot middot middotmiddot
bull) - -
middot -
20490 E Aschoff Road Rhododendron Oregon 97049
Tete (503) 622-3010 FAX (503) 622-4274
- middot~
middot ~-middot
----
Innovation Performance
-~
Versatility Cost efficiency
PaylQa~ productivi-ty and profits middot
(pportunities middot Assistant Manager Arthropod Control
Department
Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
hreak ButUe wont ls ~ood as our
products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
nwsqzdwe~ Betterf(n- the enbulleironrnent
cvunwnid i connnittcd to the
pursuit l~f new tecuwlop_v and the
dc-vdoprnent Qt nemiddotw products
i)o iebullhen il cYmzcs to mosquito control
middott~bulle ~ee on(bull just scratched the surface
For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
Dimiddotvisio11 8peliulty Pnxlucr lk]xlrtrncnt
One (~vuwnnid PlaUt ll VIlC NJ 07470
(~c~~~~ Specialty Products Department One Cyanamid Plaza Wayne NJ 07470
TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
bull DIRECT DRIVE POWER TRAIN
eliminates belt problems reduces vibration
bull COMPACT CONSTRUCTION means less weight and less space required for installation
bull NON-CORROSIVE INSECTICIDE CONTROL VALVES for trouble-free operation
bull OPTIONAL CONTROL SYSTEMS to meet varied requirements
bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
ULV MODEL P1 for indoor and outdoor use
ULV MODEL MINI II for indoor and outdoor use
MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL
Continued from page 18
most have no hint of what would be plaguing them if it were not for Van Essen Hogan Bonvechio Appezzato Roderick and their early-rising crews
By-gone Days
It wasnt always that way Naples used to be a ghost town in summers past Summers before 1950 belonged to the massive swarms of saltmarsh mosquitoes that poured in from the Evershyglades and the famous 10000 Isshylands regions to the south and southeast and the freshwater Psorophora and Culex that poured in from the east After high tides came the saltmarsh species after heavy rains the freshwater ones
here was no end until December ~he start of the dry season and the beginning of the snowbird migrashytion that fueled the economy of the upscale community that was and remains the last vestige of civilization on Floridas southshywest coast Next stop Everglades City
The Collier Mosquito Control District was formed in 1950 with Claude Starter as part-time Direcshytor full-time banker a man with many professions Back then the District of six square miles had approximately 1500 residents and a budget of well not much The program grew dramatically durshying the 29-year full-time directorshyship of Brandt Watson from 1959 through 1988 Brant a University of Florida trained entomologist ith a Masters degree changed the way the District did business In the early 60s Watson and the J ther Collier County department directors were investigated by he prominent and affluent
Naples Civic Association The evaluation team which included world class medical entomologist Dr Ken Knight eventually adopted Watsons recommendashytions which served as the format for later development of the Disshytrict Today the county is home to 200000 the district is 243 s~uare miles and the annual opershyatmg budget is over $4 million Personnel and equipment are housed in a new $5 million comshyplex part of the Watson legacy on the west side of the Naples
4- A~-shys__
Municipal Airport The program is financed as an independent special taxing district and its opshyerations are overseen by a 5-memshyber board My how things have changed in Naples in 45 years
Modern Leadership
Not only has the operations part of the program changed the
administration protocols have changed too Twenty-seven year veteran and Assistant Director for Administration Joan Owens has seen it all well most She has seen the mosquito control can do no wrong attitude of the public change to scepticism and alarm at what the citizens and regulatory agencies thought the program was doing As attitudes changed the program changed
Owens thinks Director Van Essen is a man for the 90s He is open works well with commisshysioners delegates responsibility and includes the staff on commit-
tees on Finance Long Range Planshyning Personnel Safety and Public Relations He and the Board proshymote a strong public relations program innovative research and on-going evaluation of technical improvements such as CPSshyguided aircraft computers and PCR Gene Lemire is the Assisshytant Director for Research and Public Education Obviously staying busy is not a problem for Gene Long term plans call for new communications equipment new aircraft and possibly expandshying the district Everybody still wants in on a good thing
Van Essen is a quiet soft sposhyken man slight of build and very personable He can however afford to let his staff do their work without fear of mutiny he is an artist-a martial artist-a 6th deshygree black belt in Cuong Nhu Kashyrate He also rides bikes-real bikes-Hogs (Thats Harley Davidson for you non-riders) Frank keeps his life well balanced through his wife and two kids and by being President of the Naples Kiwanis only part of his community inyolvement
The PhD that follows his name comes from the University of Florida and entomologist Dr Jerry Butler Before that he got a Masters degree at Delaware unshyder Dr Bob Lake and before that a BS at Allegheny College near Pittsburgh Frank did the original lab evaluations of Bti against Ae taeniorhynchus as a civilian at Fort Detrick in the late 70s He also worked for Biochem Products for five years before coming to Collier as an Entomologist in 1986 Two years later he became Director
Continued on page 24
Spring 1996 1()~ ~eatt 21
bullbullbullbull
middot lsolair ofters ~y-stems that l6bkand p~rforn - middotmiddot - middot - middot -
- middotbull
bull
middot like _an intemiddotgral part of yo~middotr helicopt~r middot middot middot middot middot middot - -middot ~ - middot - middotmiddot -
~- - _
middot ~ bull I bull bull bull
Our goal is to provide youmiddot wi1hthe middotmiddot middot middot middot middot middotmiddot - middot
- ~ middot
equipment you n~eci to get ) he jo-b doh~ middot-middot middot
middot middot -
With middotisltgtlair youmiddotmiddot can expect
-~
middot - -
middot middot middotmiddot
bull) - -
middot -
20490 E Aschoff Road Rhododendron Oregon 97049
Tete (503) 622-3010 FAX (503) 622-4274
- middot~
middot ~-middot
----
Innovation Performance
-~
Versatility Cost efficiency
PaylQa~ productivi-ty and profits middot
(pportunities middot Assistant Manager Arthropod Control
Department
Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
hreak ButUe wont ls ~ood as our
products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
nwsqzdwe~ Betterf(n- the enbulleironrnent
cvunwnid i connnittcd to the
pursuit l~f new tecuwlop_v and the
dc-vdoprnent Qt nemiddotw products
i)o iebullhen il cYmzcs to mosquito control
middott~bulle ~ee on(bull just scratched the surface
For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
Dimiddotvisio11 8peliulty Pnxlucr lk]xlrtrncnt
One (~vuwnnid PlaUt ll VIlC NJ 07470
(~c~~~~ Specialty Products Department One Cyanamid Plaza Wayne NJ 07470
TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
bull DIRECT DRIVE POWER TRAIN
eliminates belt problems reduces vibration
bull COMPACT CONSTRUCTION means less weight and less space required for installation
bull NON-CORROSIVE INSECTICIDE CONTROL VALVES for trouble-free operation
bull OPTIONAL CONTROL SYSTEMS to meet varied requirements
bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
ULV MODEL P1 for indoor and outdoor use
ULV MODEL MINI II for indoor and outdoor use
MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL
bullbullbullbull
middot lsolair ofters ~y-stems that l6bkand p~rforn - middotmiddot - middot - middot -
- middotbull
bull
middot like _an intemiddotgral part of yo~middotr helicopt~r middot middot middot middot middot middot - -middot ~ - middot - middotmiddot -
~- - _
middot ~ bull I bull bull bull
Our goal is to provide youmiddot wi1hthe middotmiddot middot middot middot middot middotmiddot - middot
- ~ middot
equipment you n~eci to get ) he jo-b doh~ middot-middot middot
middot middot -
With middotisltgtlair youmiddotmiddot can expect
-~
middot - -
middot middot middotmiddot
bull) - -
middot -
20490 E Aschoff Road Rhododendron Oregon 97049
Tete (503) 622-3010 FAX (503) 622-4274
- middot~
middot ~-middot
----
Innovation Performance
-~
Versatility Cost efficiency
PaylQa~ productivi-ty and profits middot
(pportunities middot Assistant Manager Arthropod Control
Department
Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
hreak ButUe wont ls ~ood as our
products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
nwsqzdwe~ Betterf(n- the enbulleironrnent
cvunwnid i connnittcd to the
pursuit l~f new tecuwlop_v and the
dc-vdoprnent Qt nemiddotw products
i)o iebullhen il cYmzcs to mosquito control
middott~bulle ~ee on(bull just scratched the surface
For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
Dimiddotvisio11 8peliulty Pnxlucr lk]xlrtrncnt
One (~vuwnnid PlaUt ll VIlC NJ 07470
(~c~~~~ Specialty Products Department One Cyanamid Plaza Wayne NJ 07470
TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
bull DIRECT DRIVE POWER TRAIN
eliminates belt problems reduces vibration
bull COMPACT CONSTRUCTION means less weight and less space required for installation
bull NON-CORROSIVE INSECTICIDE CONTROL VALVES for trouble-free operation
bull OPTIONAL CONTROL SYSTEMS to meet varied requirements
bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
ULV MODEL P1 for indoor and outdoor use
ULV MODEL MINI II for indoor and outdoor use
MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL
(pportunities middot Assistant Manager Arthropod Control
Department
Orlando Florida
Duties include assisting in the management and daily operations of the department serving as the supervisory entomologist ensurshying that all laws policies and proshycedures are adhered to This pershyson will also be involved in the supervision of programs tailored to educate the general public
Successful candidates will posshy-_ ess a Bachelors degree with mashyjor course work in Entomology Biology or a closely related field and four (4) years of professional experience to include two (2) years of supervisory experience or an equivalent combination of education training and experishyence
Competitive salary commensushyrate with education and experishyence to include an excellent benshyefits package Position open until filled Please submit your resume and proof of education to
ORANGE COUNTY GOVERNMENT
HUMAN RESOURCES DEPARTMENT
Position 96-1065 201 South Rosalind A venue Orlando FL 32801
Telephone 407-836-5660 Fax 407-836-5369
Health Department Assistant Director for
Mosquito Control
Houston Texas
Under the supervision of the Harris County Health Department Director the Assistant Director for the Mosquito Control District proshyvides leadership in the prevention and outbreak control of mosquito borne diseases drafts policy plans organizes and directs Mosshyquito Control District provides consultation to government entishyties staff citizens news media and others regarding vector borne diseases in the community He She also functions as a member of the Health Departments staff for the development of Department policies and programs middot
Minimum Experience Masters degree in a biologiclife science area with course work in Entoshymology Must have a thorough knowledge of standard adminisshytration practices principles of orshyganization and personnel manshyagement Minimum 5 years expeshyrience in field mosquito program direction and staff supervision Ability to obtain any required state certification within 4 months of assuming position Must posshysess valid Texas Drivers License
Job Posting 1130 Open until filled
Contact Charlie Cunningham 713-439-6005
Donated Supplies program
Nationwide
Nonprofit organizations and programs that provide health care can receive new donated supplies through a nationwide corporate gifts program
Available materials include office supplies computer softshyware and accessories cleaning supplies clothing toys and games arts and crafts tools hardshyware paper goods seasonal decoshyrations and personal care prodshyucts
The goods are collected and distributed by the nonprofit nashytional Association for the Exshychange of Industrial Resources based in Galesburg Illinois Reshycipient groups pay $645 annual dues plus shipping and handling but the merchandise itself is free
N AEIR says members average $9000 worth of new products a year choosing what they need from 300-page catalogs issued every ten weeks A computer deshycides who gets what
First year members are covered by a money back guarantee NAEIR will send a free informashytion kit to interested nonprofits
800-562-0955
Spring 1996 W~ ggteatt 23
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
hreak ButUe wont ls ~ood as our
products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
nwsqzdwe~ Betterf(n- the enbulleironrnent
cvunwnid i connnittcd to the
pursuit l~f new tecuwlop_v and the
dc-vdoprnent Qt nemiddotw products
i)o iebullhen il cYmzcs to mosquito control
middott~bulle ~ee on(bull just scratched the surface
For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
Dimiddotvisio11 8peliulty Pnxlucr lk]xlrtrncnt
One (~vuwnnid PlaUt ll VIlC NJ 07470
(~c~~~~ Specialty Products Department One Cyanamid Plaza Wayne NJ 07470
TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
bull DIRECT DRIVE POWER TRAIN
eliminates belt problems reduces vibration
bull COMPACT CONSTRUCTION means less weight and less space required for installation
bull NON-CORROSIVE INSECTICIDE CONTROL VALVES for trouble-free operation
bull OPTIONAL CONTROL SYSTEMS to meet varied requirements
bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
ULV MODEL P1 for indoor and outdoor use
ULV MODEL MINI II for indoor and outdoor use
MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL
Continued from page 21
Nuts amp Bolts
The where and when to spray or not spray decisions are finely tuned around a comprehensive and uncomplicated 7-days-ashyweek surveillance system of 35-45 landing rate counts and 38 New Jersey light traps baited ~ith octenol dry ice is expensive and hard to come by at the edge of paradise It took years before th~ staff learned to translate mosqmto collection numbers and citizen service-request data into the threshold levels that trigger preshyventive spraying today In the old days citizens knew how bad mosquitoes could be in Naples and their telephone calls tnggered the spraying Today collection numbers forewarn of impending invasions and spraying is done before mosquitoes can reach resishydent and vacationer alike Ask citizens around town about their mosquito control program and most newcommers will respond with What mosquito control proshygram It didn t use to be that way either
Mosquito control in Colli~~ is by necessity an aerial adulticidshying program Since 95~ of the mosquito problems fly I~ from extensive wetlands outside the
24 WiHf 5eat4- Spring 1996
boundaries of the District it is impossible to control them bY larshyviciding-not that they haven t tried The frequent adulticiding of upwards of 50000 acres or 78 square miles in ~wo ~ours m~y seem inappropnate 111 today s eJshyvironmentally sensitive society It is unusual by today s standards The alternative for Collier County is no mosquito control The ~eavy use of aircraft requires a speCial group of oft-for9otten bu~ essenshytial craftsmen aucraft ma111teshynance personnel You can bet your life the pilots dont forget Chief of Aircraft Maintenance Jay T Wilson and his crew
Conflict
The mandates of 1) a demand for mosquito control by on~ _of the states wealthiest commumties and 2) a demand by state and loshycal environmental agencies and groups to protect the states coshylogical treasures have b~en 111 conflict at times Accordmg to District Board Chairman Rob Boyer the two groups are coopershyating successfully toward a greener mosquito control M1ke Shirley Resource Management Coordinator of the Rookery Bay National Estuarine Research Preshyserve couldnt agree more Shirley is impressed by Collier Mosquito Control Districts comshymitment to investigating probshylems that may or may not be reshylated to mosquito control activity Recent indications that aerial sprays of fenthion may h~ve conshytributed to fiddler crab die-offs led to the Districts contribution to a cooperative research project with NOAA the Mote Marine Laborashytory in Sarasota Florida and Rookshyery Bay Shirley is also impressed with the Districts interest and participation in developing innoshyvative nonchemical methods of control for a new upscale commushynity that borders the Preserve
More Nuts In reality the extensive aerial
spraying is not done over wetlan preserves its done for the most part over wooded and sparsely populated areas The aerial treatshyments are 90-95 effective against Psorophora and saltmarsh mosquishytoes and about 70 effective against Culex The early mo~ning timing (2-4 am) of the applicashytions of ~ to 1 ounce Baytexreg UL V per acre is ideal to avoid treating people honey bees and most other beneficial insects The weather before dawn is ideal for spraying 99 of the time The winds are light it avoids the typishycal Florida mid-afternoon rain cycle fogs dont form until about 4 am and there are no temperashyture inversions to carry the spray out of the target area
Because many of the mosquishytoes causing the problems migrate into the area the adulticiding treatments affect only a small por tion of the breeding mosquito population consequently there has been no build up of resistance
to the insecticides The only spraying over majo~ re~ident~al areas is limited larvic1d111g with
Continued on page 26
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
hreak ButUe wont ls ~ood as our
products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
nwsqzdwe~ Betterf(n- the enbulleironrnent
cvunwnid i connnittcd to the
pursuit l~f new tecuwlop_v and the
dc-vdoprnent Qt nemiddotw products
i)o iebullhen il cYmzcs to mosquito control
middott~bulle ~ee on(bull just scratched the surface
For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
Dimiddotvisio11 8peliulty Pnxlucr lk]xlrtrncnt
One (~vuwnnid PlaUt ll VIlC NJ 07470
(~c~~~~ Specialty Products Department One Cyanamid Plaza Wayne NJ 07470
TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
bull DIRECT DRIVE POWER TRAIN
eliminates belt problems reduces vibration
bull COMPACT CONSTRUCTION means less weight and less space required for installation
bull NON-CORROSIVE INSECTICIDE CONTROL VALVES for trouble-free operation
bull OPTIONAL CONTROL SYSTEMS to meet varied requirements
bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
ULV MODEL P1 for indoor and outdoor use
ULV MODEL MINI II for indoor and outdoor use
MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL
copy1996 American Cyanamid Company
AFTER FOUR
DECADES 0~~
OSQUITO
CONTROL WE
ST I_JL HAVE
AN ITCI-1 TO
DO MORJ1~ Jlumiddotmiddotcin4 lHc11 at tlwfiJrct1mlt of
lnt JsqHito controlteclnwlogvf(n- oucrj( my
years middotue could q(t(n-d to tulw a little
hreak ButUe wont ls ~ood as our
products are Fe UlUL to nwhe them ezen better JJetter at eontrollin~
nwsqzdwe~ Betterf(n- the enbulleironrnent
cvunwnid i connnittcd to the
pursuit l~f new tecuwlop_v and the
dc-vdoprnent Qt nemiddotw products
i)o iebullhen il cYmzcs to mosquito control
middott~bulle ~ee on(bull just scratched the surface
For more i-lf(n7nution cm CyuHwnuf
nwstfllito control product L~Titt w
American (~Yntarnid Wricultwnll~TXhlctr
Dimiddotvisio11 8peliulty Pnxlucr lk]xlrtrncnt
One (~vuwnnid PlaUt ll VIlC NJ 07470
(~c~~~~ Specialty Products Department One Cyanamid Plaza Wayne NJ 07470
TH 111fORLD NIIPS -MOSGUtTO CONTRQ4 bullbull
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
bull DIRECT DRIVE POWER TRAIN
eliminates belt problems reduces vibration
bull COMPACT CONSTRUCTION means less weight and less space required for installation
bull NON-CORROSIVE INSECTICIDE CONTROL VALVES for trouble-free operation
bull OPTIONAL CONTROL SYSTEMS to meet varied requirements
bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
ULV MODEL P1 for indoor and outdoor use
ULV MODEL MINI II for indoor and outdoor use
MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL
Continued from page 24
Bti pellets (5 I ac) or liquid Abatereg (1 oz ac) and rare adulticiding of hot spots with Baytex ULV The conversion from thermal fog to UL V spraying four years ago has saved the Disshytrict a lot of money according to Chairman Boyer Higher aircraft payloads have reduced aircraft use pilot hours aircraft mainteshynance and petroleum product costs as less fuel is needed and no carriers are required for the insecshyticide
Psst Stay Alert
The major hazards to nightshyflying are towers and construction booms both of which seem to pop up overnight These potentially deadly needles are avoided by routine daytime reconnaissance of target areas Collier County has also given the mosquito control district zoning approval of new towers and the County will 11 ticket construction booms if they fail to lower them at night according to County regulations The District tries to group towers so as not to restrict where the DC-3s can operate The more areas with towers the more they must rely on helicopters Another drawback to night flying is awakshyening new residents who live unshyder the aircraft turning points Startled at first they soon realize the sounds are the good guys and eventually the sound becomes white noise to the sleeping citishyzenry
Since treatments are based on need as established and docushymented by landing rates trap counts service requests and monitoring tides and rainfall the number of missions is highly varishyable from year to year In 1995 there were only 22 missions with the DC-3s and another 40 or so mop-ups with the helicopters During a bad mosquito year there
26 UUtt geatt Spring 1996
may be 4-5 flights (both fixed and rotary aircraft) a week from May to November The result is the same few or no mosquitoes to pester or transmit viral encephalishytis to people A workable comshypromise has evolved to protect both the ecosystem and all its inshyhabitants and thus it seems we have reached the end of our story Not quite
The Future
To the outsider it may appear that the final goal of mosquito control in Collier County has been reached To Director Van Essen and the Board of Directors proshygram evolution continues The District has supported research since Watson hired Scott Ritchie in the early 80s and paid to send him to the University of Florida for a PhD degree while working summers for the District
Today s strong research effort continues with staff entomoloshygists Gene Lemire and Dr Jeff Stivers and through cooperative projects with Dr Dan Kline of the USDAs Medical and Veterishynary Entomology Research Laboshyratory in Gainesville and with Dr Eric Schreiber and Dr Noor Tietze of Florida AM Universitys Mulrennan Research Lab in Panama City The objectives of these programs are to explore new ways to control mosquitoes using less or no insecticide to exshyplore the possibility of using bioshylogical control agents and to enshysure that what they are doing toshyday is not causing permanent damage to nonmosquito organshyisms Clearly 45 years of intenshysive mosquito control have not caused permanent damage to the mosquito population as evishydenced by the fact that if one mosshyquito brood goes uncontrolled the Neapolitans revolt
The District also supports reshysearch by Dr Dov Borovsky of the University of Floridas Florida Medical Entomology Lab in Vera Beach Borovsky is evaluating new PCR technology for monitorshying St Louis and eastern encephashylitis viruses in mosquitoes Chairshyman Boyer puts research at the top of his II do more list He feels that all mosquito control proshygrams should put at least 5 of their budgets into research trying to develop new and innovative control methods using either their own staffs or through reshysearch centers Collier Mosquito Control District is certainly leadshying the way in this respect
Hey Yall
To the descendants of those 1940s visitors and others who think it is not possible to live in southwest Florida because of the mosquitoes the 28 staff members of the Collier Mosquito Control District say Come on down By the year 2000 another 50000 people will have staked their claim to a part of the former holdshyings of Barr~m G Collier and thus their paradise gained
Charlie Morris is an Associate Professor at the Florida
Medical Entomology Laboratory University of
Florida Vero Beach
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
bull DIRECT DRIVE POWER TRAIN
eliminates belt problems reduces vibration
bull COMPACT CONSTRUCTION means less weight and less space required for installation
bull NON-CORROSIVE INSECTICIDE CONTROL VALVES for trouble-free operation
bull OPTIONAL CONTROL SYSTEMS to meet varied requirements
bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
ULV MODEL P1 for indoor and outdoor use
ULV MODEL MINI II for indoor and outdoor use
MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL
For efficient mosquito control and proven dependability nothing works like a LECO
ULV MODEL 1600 for heavy duty applications
LECO insecticide generators have earned a reputation for efficient pershyformance and reliability that is unmatched in the mosquito control inshydustry LECO generators are engineered for economy of operation and durability Many are still in use after more than 20 years of service
A leader in ULV technology LECO utilizes a specialized system designshyed to disperse insecticide at critically measured flow rates for maximum efficiency The exclusive LECO ULV head provides a unique shearshying action that produces a closely controlled particle size of greater uniformity for optimum results and savings of up to 25 on insecticide
EXCLUSIVE LECO FEATURES MEAN GREATER VALUE
bull DIRECT DRIVE POWER TRAIN
eliminates belt problems reduces vibration
bull COMPACT CONSTRUCTION means less weight and less space required for installation
bull NON-CORROSIVE INSECTICIDE CONTROL VALVES for trouble-free operation
bull OPTIONAL CONTROL SYSTEMS to meet varied requirements
bull MODELS AVAILABLE with capacities to fit most applications
bull bull TIME-TESTED LECO DEPENDABILshyITY means many years of service with minimum maintenance
ULV MODEL P1 for indoor and outdoor use
ULV MODEL MINI II for indoor and outdoor use
MODEL 120 D Thermal Aerosol Fog Generator
LOWNDES ENGINEERING CO INC 125 BLANCHARD ST I PO BOX 488 VALDOSTA GEORGIA 31601
PHONE (912) 242-3361 TOLL FREE 1middot800middot236-6165 FAX (912) 242-8763
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL
L has been our
privilege to serve you
and your community
over the last 50 years
Together we have reached
great accomplishments
toward a safer more
comfortable outdoor
environment We are
grateful for your support
and friendship over the
last half-century From
all of us at Clarke a
heartfelt thank you
~M_ _ l--L J hn L Clarke Jr Founder and Chairman
11~~ PO Box 60005 fort Myers EL 33906
ADDRESS CORRECTION REQUESTED
1bull800bull323bull5727
5 Serving Growing Excelling
BULK RATE USPOSThGE
PAlO PERMlT198
bull FTMYERSFL