zika virus vectors: aedes mosquito biology and behavior
TRANSCRIPT
Zika Virus Vectors: Aedes Mosquito Biology
and Behavior
Jim Fredericks, Ph.D, BCEVice President, Technical and Regulatory Affairs
National Pest Management Association21 April 2016
Aedes aegypti – Yellow fever mosquito
CDC Public Health Image Library
Aedes albopictus - Asian tiger mosquito
CDC Public Health Image Library
Aedes Distribution in the U.S.
http://www.cdc.gov/dengue/resources/factSheets/MosquitoLifecycleFINAL.pdf
Egg Stage – Aedes Mosquitoes•Eggs laid above the waterline
•Eggs hatch when water fills container
•Can survive without water for 6-12 months
•A. albopictus eggs can survive cold temperatures
http://hilo.hawaii.edu/academics/cafnrm/faculty/mosquitohome.html
Managing Breeding Locations
CDC Public Health Image Library
Aedes mosquitoes prefer relatively clean water sources
Potential Breeding Sites
Water containers CansTiresTree holesPailsPlastic jugsClogged guttersBird bathsCatch basinsChildren’s toysAbandoned poolsFlowerpots
Any container with water present > 5 days
Eliminate Breeding Locations
Larval Stage
•Larvae emerge after water covers eggs
•Feed on microorganisms in water
•3 molts, then develop into pupa
http://hilo.hawaii.edu/academics/cafnrm/faculty/mosquito_wigglers.ht
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Pupal Stage
•Sometimes called tumblers
•Adults emerge from this stage
•Not as vulnerable to control methods as larval stage
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Adult Stage
•Females require blood meals for egg production•Aedes spp. bite aggressively during daytime (nights too)•Prefer to feed on humans•Rarely disperse beyond 100 yards from hatch location
CDC Public Health Image Library
Takeaway Messages• Zika is transmitted by Aedes mosquitoes
• Aedes mosquitoes have unique behaviors– Daytime biters– Prefer to feed on humans– Multiple small meals– Well adapted to breed in and around structures– Limited dispersal
• Zika vectors require an integrated pest management approach for control efforts to succeed
Aedes mosquito control is LOCAL!
What’s NPMA’s Message?Control is LOCAL!
Zika vectors require an integrated pest management approach for control efforts to succeed
The industry has a built-in pest defense network of 150,000 professionals trained in mosquito control