Mosquito Biology Larval Control. General Points ► Four development stages (egg/larva/pupa/adult) ► Immature stages need standing water (egg/larva/pupa)

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Presentation transcript:

Mosquito Biology Larval Control

General Points ► Four development stages (egg/larva/pupa/adult) ► Immature stages need standing water (egg/larva/pupa)

How long from egg to adult? ► 3 to 5 days for flood water species like Aedes & Ochlerotatus ► 7 to 10 days for standing water species like Culex ► 14 to 21 days for rice field species like Anopheles

District Species ► 53 California species ► 7 genera, 24 District species ► Different habitats, behavior, blood sources

Anopheles

Rice Fields/”Clean Water Sources”

Mosquito Immature Habitats ► Agricultural ► Industrial ► Domestic ► Natural

Mosquito Breeding Sites Around the Home/Community

Reporting of problems ► Maybe no need to report!  If it can be drained, then problem goes away ► District website  ► District phone  between 7:00-3:30 ► Any way you can let us know!

When are Mosquitoes Active? ► Dusk & Dawn (Culex & Anopheles) ► Daytime (Aedes & Ochlerotatus)

How Long do Mosquitoes live? ► Depends on season (winter/summer) and species ► In summer 2-3 weeks ► Ochlerotatus and Aedes longer lived than Culex.

How Far can a Mosquito Fly from a Development Site? Flight Range DistanceSpecies Short Few blocks to a mile Culex pipiens Oc. sierrensis Medium 3 to 10 miles Culex tarsalis Long 10 to 40 miles An. freeborni Oc. melanimon

Mosquito Control ► Water management (The Best!) ► Biological control ► Insecticides (larvicides, adulticides

Public Awareness and Education ► Informing  What you can do to prevent mosquitoes  What you can do to protect yourself ► Changing Behavior  “You poured out that bucket of water, but did you just fill it back up with the sprinkler?”