Anopheles gambiae (Diptera: Culicidae) oviposition as influenced by type of water infused into black and red soils of western Kenya
The aim of this study was to document what water types were most stimulatory to oviposition by the malaria mosquito, Anopheles gambiae Giles s.s. In laboratory choice tests, dishes of black cotton and red laterite soils from around Kisumu, Kenya, equally stimulated An. gambiae oviposition when saturated with water. When infused into either soil type, water from Lake Victoria was significantly more stimulatory than any other type of water or infusion tested.Water from natural An. gambiae puddle habitats, borehole water, cow dung infusion, Bermuda grass infusion and distilled water followed in declining rank order. Relative to An. gambiae puddle-habitat water and distilled water, Lake Victoria water appears to provide the strongest chemical cues for An. gambiae oviposition recorded to date. This work suggests that this important vector of human malaria may oviposit in and around Lake Victoria, as well as in its usual puddle habitats. Lake Victoria should be explored for its possible contribution to malaria mosquito populations.
Key wordsAnopheles gambiae ovipositional site selection resource preference malaria vector Lake Victoria
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- Bray A. M. (2003) Ovipositional behavior of Anopheles gambiae as influenced by variable substrates and chemicals. MSc thesis, Michigan State University, USA.Google Scholar
- Clements A. N. (1999) The Biology of Mosquitoes, II Sensory Reception and Behaviour. CABi Publishing, New York.Google Scholar
- Knols B. G. J., Sumba L. A., Guda T. O., Deng A. L., Hassanali A. and Beier J. C. (2004) Mediation of oviposition site selection in the African malaria mosquito Anopheles gambiae (Diptera: Culicidae) by semiochemicals of microbial origin. International Journal of Tropical Insect Science 24, 260–265.Google Scholar
- Miller J. R., Giroux P. Y., Letutchaia J., Huang J., Vuluke J. and Walker E. D. (2007) Capacity of Anopheles gambiae to inhabit and develop in moving water. Journal of the American Mosquito Control Association (in press).Google Scholar