Munga Stephen, Minakawa Noboru, Zhou Guofa, Barrack Okeyo-Owuor J, Githeko Andrew K, Yan Guiyun
Kenya Medical Research Institute, Kisumu, Kenya.
J Med Entomol. 2006 Mar;43(2):221-4. doi: 10.1603/0022-2585(2006)043[0221:eolcap]2.0.co;2.
We examined whether predators and competitors influence selection of oviposition sites by Anopheles gambiae Giles. Mosquitoes in cages laid significantly fewer eggs in rainwater conditioned with a predator (backswimmers, Notonecta sp.) than in unconditioned rainwater. Rainwater conditioned with a putative competitor (tadpoles, Xenopus sp.) also had fewer eggs than unconditioned rainwater. Similarly, mosquitoes laid significantly fewer eggs in rainwater conditioned with five and 50 An. gambiae larvae than in unconditioned rainwater. When larvae were present, significantly more eggs were laid in containers with five larvae than in containers with higher densities, but the differences in number of eggs laid were not significant among the densities of 40, 70, and 100 larvae. This study demonstrated that caged An. gambiae females avoid oviposition in habitats with supposed competitors and predators.
我们研究了捕食者和竞争者是否会影响冈比亚按蚊（Anopheles gambiae Giles）对产卵地点的选择。与未处理的雨水相比，饲养在笼子里的蚊子在含有捕食者（仰泳蝽，Notonecta sp.）的雨水中产卵量显著减少。含有假定竞争者（蝌蚪，Xenopus sp.）的雨水里的卵也比未处理的雨水中少。同样，与未处理的雨水相比，蚊子在含有5只和50只冈比亚按蚊幼虫的雨水中产卵量也显著减少。当有幼虫存在时，在装有5只幼虫的容器中产卵量明显多于密度更高的容器，但在40只、70只和100只幼虫密度之间，产卵数量差异不显著。本研究表明，饲养在笼子里的冈比亚按蚊雌蚊会避免在有假定竞争者和捕食者的栖息地产卵。
