Vector biology and control
-
Upload
ucsfglobalhealthsciences -
Category
Health & Medicine
-
view
515 -
download
2
Transcript of Vector biology and control
05/02/2023
Vector biology and control
Christopher M. Barker, PhDUC Davis
Zika virus transmission
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
?
“Container-breeding” mosquitoes
Sources: www.glacvcd.org; ECDC, Guidelines for the surveillance of native mosquitoes in Europe, 2014
Ae. albopictus2011
Ae. notoscriptus2014
Ae. aegypti 2013
Invasive “Container-Breeding” Aedes Mosquitoes in
California
Source: Marco Metzger, CDPH
Predicted distribution of Aedes aegypti
Moritz UG Kraemer et al. eLife Sciences 2015;4:e08347
Ae. albopictus
Kraemer et al. eLife 4: e08347.
Ae. aegyptiSuitability Maps
Mosquito surveillance in California
MVCAC
Tracking the spread of Zika virus vectors
(Aedes aegypti and Aedes albopictus)
Adult females, males
Eggs
Egg-layingfemales
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
ReportingCDPHMVCACCDC
Mapping
Mapping Zika virus vectors
Real-time maps of Aedes
distribution
Climate-based suitability maps for Zika virus vectors
http://maps.calsurv.org/invasive
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
Fresno
BrawleyMission Viejo
Menlo Park
Clovis
Donnelly and Barker, in prep
Control options for invasive mosquitoes•Eliminate breeding sources•Larvicides
• chemicals, insect growth regulators•Adulticides
•habitats are challenging•Other methods
•Mating-based strategies•Lethal ovitraps
What can we do to keep the risk for local Zika virus transmission low?
Personal protection: - avoidance- clothing - screening- repellents
Integrated vector management