The Relation Between Rainfall and Mosquito Populations
Immature stages of mosquitoes are all aquatic and require water in the form of either large permanent pools and streams or temporary rainpools or even small collections of water in fallen leaves or flowers. As the seasons in the tropics are marked by fluctuation in rainfall, it is not surprising to find that populations of many mosquito species follow these seasons very closely. However, while most population studies of adult mosquitoes show a general relationship between density and rainfall, based on monthly fig ures (see Aitken et al., 1968; de Kruijf, 1972b), they do not explain the detailed fall and rise of populations as related to changes in water supply.
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