Mkoji G M, Boyce T G, Mungai B N, Copeland R S, Hofkin B V, Loker E S
Biomedical Sciences Research Center, Kenya Medical Research Institute, Nairobi, Kenya.
J Am Mosq Control Assoc. 1999 Mar;15(1):69-71.
Laboratory experiments lasting 1-3 days were conducted in 10-liter glass aquaria to evaluate the ability of the Louisiana red swamp crawfish (Procambarus clarkii [Decapoda: Cambaridae]) to consume the aquatic forms of mosquitoes. With Anopheles gambiae as the target species, significantly fewer mosquito larvae or pupae survived in the presence of either juvenile or adult crawfish, relative to conditions without crawfish, regardless of whether crawfish had alternative food or not. When alternative food was excluded, juvenile and adult crawfish had a comparable ability to consume mosquito larvae. However, when alternative food was available, adult crawfish consumed significantly fewer mosquito larvae than did juveniles. In the case of pupae, juvenile crawfish consumed significantly more mosquito pupae than did the adults when alternative food was excluded. No significant difference, relative to controls, was found in the proportion of mosquito pupae surviving when adult crawfish had alternative food. Results of the present study show that P. clarkii has the ability to consume the aquatic forms of anopheline mosquitoes and, therefore, may have an impact on populations of pathogen-transmitting mosquitoes in an area of Kenya where the crawfish has become common.
在10升的玻璃水族箱中进行了为期1至3天的实验室实验，以评估路易斯安那州红沼泽小龙虾（克氏原螯虾[十足目：螯虾科]）捕食水生形态蚊子的能力。以冈比亚按蚊为目标物种，相对于没有小龙虾的情况，无论小龙虾是否有其他食物，在有幼体或成体小龙虾存在的情况下，存活的蚊子幼虫或蛹显著减少。当排除其他食物时，幼体和成体小龙虾捕食蚊子幼虫的能力相当。然而，当有其他食物时，成体小龙虾捕食的蚊子幼虫明显少于幼体。就蛹而言，当排除其他食物时，幼体小龙虾捕食的蚊子蛹明显多于成体。当成体小龙虾有其他食物时，存活的蚊子蛹比例与对照组相比没有显著差异。本研究结果表明，克氏原螯虾有能力捕食按蚊的水生形态，因此，在肯尼亚小龙虾已变得常见的地区，可能会对传播病原体的蚊子种群产生影响。
