Rao T R, Trpis M, Gillett J D, Teesdale C, Tonn R J
Bull World Health Organ. 1973 May;48(5):615-22.
The single-larva survey method was employed to study the breeding places and seasonal incidence of Aedes aegypti in Dar es Salaam, Tanzania. From May 1968 to May 1969, 28 462 containers of water-located in approximately equal numbers indoors and outdoors-were investigated. The highest frequency of breeding (8.0%) of A. aegypti was observed in tires and motor parts. Drums, barrels, water-pots, and other receptacles left outdoors showed a higher frequency (3.1%) than those kept indoors (0.6%). Metal containers were infested to a greater extent than those made of mud, wood, or other materials; 2.5% of coconut shells, snail shells, etc. and 1.3% of tree holes, plant axils, and cut bamboos were infested. The seasonal prevalence, expressed as a container index, closely followed and paralleled the fluctuations in rainfall. The value of this survey method for both ecological studies and practical control purposes is discussed.
采用单幼虫调查方法研究了坦桑尼亚达累斯萨拉姆埃及伊蚊的滋生地和季节性发生率。1968年5月至1969年5月，对28462个盛水容器进行了调查，室内和室外的容器数量大致相等。埃及伊蚊滋生频率最高（8.0%）的是轮胎和发动机部件。留在室外的桶、水缸、水壶和其他容器的滋生频率（3.1%）高于室内容器（0.6%）。金属容器比泥、木或其他材料制成的容器受侵染程度更高；2.5%的椰子壳、蜗牛壳等以及1.3%的树洞、植物腋部和砍下的竹子受到侵染。以容器指数表示的季节性流行情况与降雨量的波动密切相关且平行。讨论了这种调查方法在生态研究和实际防治方面的价值。
