Biology, Surveillance and Control of Mosquito Vectors

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light traps supplemented with CO2 showed synergistic effect toward various species of

mosquitos.

4.12.1.1

CDC light traps

CDC light traps baited with CO2 (dry ice). Traps can be set and fix in metallic stick

as holder. Batteries were used for the functioning of the traps’ light and ventilation sys-

tem. Insects are attracted to the light during the night and from the smell of the CO2 (dry

ice), which imitates the exhaled CO2 from animals, who is a very attractive smell for the

mosquitos. It has been well established that CDC trap without CO2 is not attractive to

mosquitos (Oli et al. 2005). CDC traps augmented with CO2 from dry ice is an efficient

trap (Figure 4.6). However, since it is difficult to obtain dry ice in many remote areas in

tropical countries, yeast generated CO2 traps could be used since it is easily available and

cheap (Oli et al. 2005).

Figure 4.6: Different CDC light traps baited or not with CO2.