Adult mosquito populations are sampled weekly...
Surveillance of adult mosquitoes should include several methods of collection to sample for nocturnal, diurnal, and crepuscular species. Adult mosquito surveillance helps to elucidate the mosquito distribution, density, and species composition throughout the control area. Furthermore, it can provide direct evidence of an increased risk of contracting mosquito-borne viruses. It is also crucial for the efficient and precise application of adulticides. All mosquito species found in an area are not attracted to the same trap type; therefore, the following combination of methods is typically employed to develop an accurate picture of the local mosquito population.
CDC (Centers for Disease Control) Miniature Light Traps are lightweight, portable, battery operated traps that can be used throughout an area to assess local adult mosquito population abundance. These traps are baited with dry ice (a source of carbon dioxide) to increase their appeal to host-seeking mosquitoes. CDC light traps are typically set on an as needed basis throughout the summer months.
Gravid Traps are lightweight, portable battery operated traps that use putrid water as an attractant for ovipositing mosquitoes. They are ideal for collecting Culex mosquitoes that oviposit in these habitats. Gravid traps are typically set on an as needed basis during the active mosquito-breeding season.
New Jersey Light Traps are semi-permanently placed traps powered by 110-volt household current. New Jersey light traps can be set throughout the area and monitored on a weekly or daily basis as needed.
Landing Rates are performed by field staff and are instrumental in determining which species of mosquitoes are a ctively feeding on humans in an area. Inspectors establish areas throughout the target area where they can expose themselves as bait and count the number mosquitoes landing on them in a given time (usually one to ten minutes). These counts are conducted as needed each day.
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Larval Surveillance