status of asian carp in the valley - tellico village poa...national strategies for asian carp status...
TRANSCRIPT
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Status of Asian Carp in the Valley
Dennis S. Baxter
April 22, 2020
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Asian Carp in the Valley
Status of Asian Carp in the Valley | 2
There are four Asian carp
species in the Tennessee
River Watershed:
Silver
Bighead
Grass
Black
Non-native and invasive in North
America
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How Did Asian Carp Get to
America?
• Aquaculture Farmers Imported Asian Carp to control Algal
Blooms and Vegetation in Culture Ponds in the 1970’s
• Floods in the1980 & 1990’s Compromised the Ponds and
Allowed the Fish to Escape into Streams and Rivers
• Once in the Mississippi River, the Fish Spread Rapidly
• Asian Carp were Found in the Ohio River in the 1990’s
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Asian Carp Distribution in Tennessee
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Silver
Carp
Reported
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Asian Carp Distribution & eDNA
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Mistaken Identity
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Gizzard Shad, Silver Carp, Blueback Herring and Alewife Comparisons
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MICRA (Mississippi Interstate Cooperative Resource Association)
• MICRA functions as an umbrella organization
- Organizes multi-state partnerships
- Address inter-jurisdictional fishery management
issues
- Within six Mississippi River sub-basins
- MICRA is a partnership of
> 28 state agencies with fisheries management jurisdiction
> 4 Federal Partners in the Mississippi River Basin
> TVA participates in the Tennessee/Cumberland sub-basin
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MICRA Objectives
• Conduct Targeted
Sampling Surveillance
• Early Detection
• Population
Characteristics
• Evaluate Lock & Dam
Passage
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National Strategies for Asian Carp
Status of Asian Carp in the Valley | 10
• Contain and control the expansion of populations of
Bighead, Black, grass, and Silver carps in the United
States
• Extirpate, or reduce to levels of insignificant effect
• Conduct research to provide accurate and scientifically
valid information necessary for the effective
management and control
• Effectively plan, implement, and evaluate management
and control efforts
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Who is Responsible?
The states (KY, MS, AL, TN) fisheries management
The USFWS obtains funding then facilitates program
The USACE operates locks
The TVA manages water/operates dams Tennessee River
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Can These Fish Be Stopped?
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First Actions
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• Since both Silver and Bighead
carp form tight schools,
individuals will be tagged so the
schools of Asian carp can be
tracked. This is called the
“Judas fish technique.”
• The fish can be affectively netted
to ensure re-capture and removal
of other invasive carp found in the
school.
• Commercial fishermen will be
able to remove fish in the school
at the state’s request.
Understanding
Population Dynamics
Status of Asian Carp in the Valley
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First Actions (cont.)
• Collaboration of Sub-basin agencies and universities
- Surveying relative densities
- Implanting acoustic transmitters and receivers
- Monitor movements through locks and dams
- Provide information for lock management and deterrent barriers
- Determine if natural recruitment is occurring in the reservoirs
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Fill Knowledge Gaps• Understand distributions and habitat use in the Ohio River sub-
basin
• Determine the extent of:
- Spawning occurring within the systems,
- Movement within the systems, and will provide
- Life history and population dynamics data for informing
Tennessee River specific-models
- Estimating control needs and invasion impacts
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Will Asian Carp Affect the Fisheries?
• Unknown at this Time
• Long Term Monitoring Programs & Historical
Fisheries Data will help Determine Changes in
Fish Populations
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Silver Carp Monitoring
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Silver Carp Adult Silver Carp Larvae
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Reservoir Ecological Health Locations
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Ecological Health Score Calculation Utilizing Five Key Indicators
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Strategies to Stop Upstream Migration
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• Communication
• Barriers
• Commercial Fishing
• Contract Fishing
• Bow Fishing Tournaments
• Large Scale Netting at Pinch
Points
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Communication
Status of Asian Carp in the Valley | 22
Websites
TV Interviews
Tennessee Uncharted
Public Meetings
Sportsman Events
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Barriers
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• Electric and Acoustic
• Positioned at the downstream
lock entrances
• Current research will determine
if barriers are successful
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• Sound Barrier-Installed by the USGS
• Installed this year
• Test to Verify if barrier works by tagging
and tracking movement
• Successful spawning has only occurred once in 2015 and not
has been seen in KY or Barkley Reservoirs since
• 100% effectiveness is not necessarily needed to reduce
population
• Recruitment reduction to upstream waters
will keep populations from exploding
Status of Asian Carp in the Valley | 24
Acoustic Barrier System at Barkley Lock
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Commercial Fishing
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Bow Fishing for Asian Carp
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Status of Asian Carp in the Valley | 27
Asian Carp Roundup
• Removal at Pinch Points
• Multi-Agency Event
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Cooperative Tagging and Removal
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Uses for Asian Carp
• Table Fare
• Bait
• Animal Feed
• Compost
• Recreation?
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Asian Carp are Great Table fare!
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Asian Carp are in Demand at Restaurants
Status of Asian Carp in the Valley
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Kentucky Fish Center, LLC
• Opened the Kentucky Fish House
- Public-Private Partnership to harvest and sell Asian Carp
• Harvest goal by 2024 is 20-million-pound
production goal
• Teaches Commercial Fishers – Use nets and how
to fish for Asian Carp
• Ice Machine
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• Lowering numbers of silver carp moving upstream
by using them for bait
- Harvest, freeze it, cut it into pieces
- Sell it as a cheap bait to East Coast lobster fishermen
- Lobster Fisherman want live bait and are willing to pay
50 cents per pound
> 50,000 lbs. needed
Turning an invasive problem into a bait solution
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Lacey Act
• It’s legal to transport invasive species across
state lines
• if the fish are dead and eviscerated
• Significant regulations must be amended to
make this work
Status of Asian Carp in the Valley
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Silver Carp on Ohio River
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Health and Safety Issues
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Flying Carp are a Hazard to Boaters
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State of the Valley
• All State and Federal Agencies are working
together through MICRA
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State of the Valley
• We Established the Leading Edge of Invasion
- Deployed Receivers & Tagged Fish
- Identified Pinch Points
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State of the Valley
• We are Testing an Acoustic Barrier
at Barkley Lock & Dam
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State of the Valley
• KY Developed Fish House & Purchased Ice
Machine
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State of the Valley
• Contract Commercial Fishing Programs are
sponsored by the States
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