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目的 :观察食蚊鱼的生态习性和灭蚊幼虫效果。方法 :食蚊鱼经实验室及试验鱼塘养殖观察后移入试验地 (稻田、积水坑、自然水体 )继续观察。结果 :该鱼身体细小 ,适应性强 ,能在贵州生态环境下很好地生活、繁殖。在稻田中 ,以 2 5 0尾 /亩的密度投放食蚊鱼 ,可降低蚊幼密度67.0 2 % ;在菜地积水坑中 ,以 3～ 5尾 /m2 投鱼 ,蚊幼密度下降 96.5 2 %。结论 :该鱼适宜在贵州环境下各类水体中生存与繁殖 ,且灭蚊效果理想 ,是生物灭蚊的有效手段之一。
Objective: To observe the ecological habits of mosquitoes and mosquito larvae effect. Methods: The mosquitoes were moved to the experimental site (paddy field, puddles, natural water) after observation by laboratory and experimental fish ponds. Results: The fish body is small, adaptable, able to live well in Guizhou ecological environment, breeding. In paddy fields, feeding mosquitoes at a density of 250 fps / mu could reduce the mosquito density by 67.0%; while in the vegetable ponds, 3 to 5 fishes per m2 were dropped, and the mosquito density decreased by 96.5 2 %. Conclusion: The fish is suitable for survival and reproduction in all kinds of water bodies in Guizhou environment, and the mosquito killing effect is ideal, which is an effective means of biological mosquito control.