Download - Vector biology and control
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05/02/2023
Vector biology and control
Christopher M. Barker, PhDUC Davis
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Zika virus transmission
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There are many species of mosquitoes
Aedes sierrensis
Aedes aegypti
Aedes albopictus
Anopheles freeborni
Culex tarsalis
Culex quinquefasciatus
DengueChikungunyaZika
Malaria Dog Heartworm
West NileSt. Louis encephalitis
?
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“Container-breeding” mosquitoes
Sources: www.glacvcd.org; ECDC, Guidelines for the surveillance of native mosquitoes in Europe, 2014
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Ae. albopictus2011
Ae. notoscriptus2014
Ae. aegypti 2013
Invasive “Container-Breeding” Aedes Mosquitoes in
California
Source: Marco Metzger, CDPH
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Predicted distribution of Aedes aegypti
Moritz UG Kraemer et al. eLife Sciences 2015;4:e08347
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Ae. albopictus
Kraemer et al. eLife 4: e08347.
Ae. aegyptiSuitability Maps
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Mosquito surveillance in California
MVCAC
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Tracking the spread of Zika virus vectors
(Aedes aegypti and Aedes albopictus)
Adult females, males
Eggs
Egg-layingfemales
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Viruses• DENV• CHIKV• ZIKV• WNV•SLEV
Surveillance for Zika virus and invasive mosquitoes
MALDI-TOF testing of Aedes eggs to identify species
RT-PCR to detect Zika virus in mosquitoes
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ReportingCDPHMVCACCDC
Mapping
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Mapping Zika virus vectors
Real-time maps of Aedes
distribution
Climate-based suitability maps for Zika virus vectors
http://maps.calsurv.org/invasive
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Aedes aegypti in Menlo Park
• Detections in 2013, 2014, & 2015
• Population appears to be small
• San Mateo County Mosquito & Vector Control District (http://www.smcmvcd.org/) for more info
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Fresno
BrawleyMission Viejo
Menlo Park
Clovis
Donnelly and Barker, in prep
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Control options for invasive mosquitoes•Eliminate breeding sources•Larvicides
• chemicals, insect growth regulators•Adulticides
•habitats are challenging•Other methods
•Mating-based strategies•Lethal ovitraps
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What can we do to keep the risk for local Zika virus transmission low?
Personal protection: - avoidance- clothing - screening- repellents
Integrated vector management
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