Mosquito surveillance is an ongoing process by which the District determines the overall population density as well as the species composition within that population. The guiding force for all control operations in any IMM program is based upon the data obtained through regular surveillance.
Larval surveillance is performed through the inspection of water-holding areas and containers. Frequently, a dipper is used to sample the water for the presence of larvae.
For the collection of adult mosquitoes, Tangipahoa Mosquito Abatement uses various traps and techniques to capture different species to be identified and counted. This aids in providing optimal control methods for the most affected areas.CDC Traps
How it works:
A one-gallon cooler is filled with dry ice, and a battery-powered light and fan hang beneath the trap. As this dry ice sublimes, CO2 is released, which serves as an attractant for mosquitoes. As they approach, they are sucked into a net. The net is collected the following day and the mosquitoes are identified by species and counted.
How it works:
The trap attracts female mosquitoes that have typically had a blood meal and are gravid (egg bearing). These mosquitoes are looking for a place to lay eggs, and are attracted by the fish emulsion. As they fly over the bait, they are sucked into a net by the fan. The net is collected the following day and mosquitoes are identified and counted.