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首页> 外文期刊>Memórias do Instituto Oswaldo Cruz >An attempt to control Phlebotomine sand flies (Diptera: Psychodidae) by residual spraying with deltamethrin in a Colombian village
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An attempt to control Phlebotomine sand flies (Diptera: Psychodidae) by residual spraying with deltamethrin in a Colombian village

机译：试图通过残留的溴氰菊酯喷洒来防治哥伦比亚村庄的竹节虫沙蝇（双翅目：科蝇科）

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An attempt was made to control phlebotomine sand flies biting indoors in a rural community near Cali, Colombia, using the residual insecticide "K-Othrine" (deltamethrin) sprayed on the inside walls of houses. Twelve houses were divided into matched pairs based on physical characteristics, one house in each pair being left untreated while the inside walls of the other were sprayed with 1 deltamethrin at a concentration of 500 mg a.i./m2. Sand flies were sampled each week using protected human bait and sticky trap collections for four months after spraying. The number of sand flies (Lutzomyia youngi) collected on sticky traps was significantly lower (P = 0.004) in the untreated houses than in the treated ones with which they were matched. This difference was not significant for L. columbiana; the other anthropophilic species were not present in large numbers. The numbers collected on human bait in treated and untreated houses were not significantly different for either species. Activity of the insecticide as determined by contact bioassays remained high throughout the study and failure to control the insects was attributed to two factors: the tendency of sand flies to bite before making contact with the insecticide and the fact that the number of sand flies that entered houses represented a relatively small proportion of the population in the wooded areas surrounding the settlement in the study.
机译：试图使用喷洒在房屋内壁上的残留杀虫剂“ K-Othrine”（溴氰菊酯）来控制在哥伦比亚卡利附近农村社区中咬住室内的螨。根据物理特性，将十二间房屋分成几对，每对房屋中的一间未经处理，而另一间的内壁则喷洒了浓度为500 mg a.i./m2的溴氰菊酯。喷洒后四个月，每周使用受保护的人类诱饵和粘性陷阱收集器采集沙蝇。在未经处理的房屋中，用粘性陷阱收集的沙蝇（Lutzomyia youngi）的数量显着低于（P = 0.004）与之相配的经过处理的房屋。对于哥伦比亚乳杆菌而言，这种差异并不显着。其他嗜人类种则不大量存在。在两种情况下，在经过处理和未经处理的房屋中，通过人为诱饵收集的数量均无明显差异。在整个研究过程中，通过接触生物测定法测定的杀虫剂活性仍然很高，而未能控制昆虫的原因归结于两个因素：沙蝇与杀虫剂接触前容易被叮咬的趋势以及沙蝇进入的数量在这项研究中，房屋仅占定居点周围林区人口的一小部分。

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