Field Studies on the Gonotrophic Cycle of Aedes Aegypti in Bangkok, Thailand

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Abstract
The gonotrophic cycle of Aedes aegypti, the principal vector of dengue hemorrhagic fever, was studied during the wet, cool-dry, and hot seasons in Bangkok using a technique of release and recapture of mosquitoes of known age and physiological condition. During the cool-dry season there was a delay of 1–2 days, in comparison with the other seasons, before the mosquitoes took their 1st blood meal. The duration of the gonotrophic cycle during the hot season was 3 days. The delay in taking a blood meal during the cool-dry months reduces the degree of man-mosquito contact and consequently the vectorial capacity of the mosquito. The implications of the findings on the strategy of control operations against adult mosquitoes are discussed.

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