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首页> 外文期刊>The American Journal of Tropical Medicine and Hygiene >Anopheles gambiae exploits the treehole ecosystem in western Kenya: a new urban malaria risk?
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Anopheles gambiae exploits the treehole ecosystem in western Kenya: a new urban malaria risk?

机译：冈比亚按蚊利用肯尼亚西部的树洞生态系统：新的城市疟疾风险？

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摘要

At six sites in western Kenya, we explored the presence of Anopheles immature stages in treeholes. An. gambiae larvae were found in 19 species, 13 of which are exotic. The most common exotic species were Delonix regia, Jacaranda mimosipholia, and Eucalyptus citrodora. In Kisumu city, longitudinal assessments of 10 Flamboyant trees showed repeated presence of An. gambiae s.s. in treeholes with water. Production of Anopheles larvae did not correlate with habitat volume but with habitat height, showing a strong but statistically insignificant negative correlation. During a dry season, eggs recovered by rinsing dry treeholes hatched into 2.5 +/- 3.06 An. gambiae and 7.9 +/- 8.2 Aedes larvae. In cage experiments, An. gambiae s.s. laid more eggs in water originating from treeholes than in distilled or lake water, implying preference for ovipositing in this habitat. Our findings indicate that treeholes represent a hitherto unrecognized habitat for malaria vectors, which needs further studies.
机译：在肯尼亚西部的六个地点，我们探索了树坑中不成熟按蚊的存在。一个。冈比亚的幼虫共发现19种，其中13种是外来的。最常见的外来物种是Delonix regia，Jacaranda mimosipholia和桉树。在基苏木市，对10棵华南乔木的纵向评估表明，重复出现了An。冈比亚公司在树洞里用水。中华按蚊幼虫的产量与栖息地数量无关，但与栖息地高度相关，显示出很强的但在统计学上微不足道的负相关。在干旱季节，通过冲洗孵化成2.5 +/- 3.06 An的干树洞而恢复了卵。冈比亚和7.9 +/- 8.2伊蚊幼虫。在笼子里的实验冈比亚公司在来自树洞的水中产卵比在蒸馏水或湖水中产卵更多，这意味着该生境更倾向于产卵。我们的发现表明，树洞代表了迄今无法识别的疟疾媒介栖息地，需要进一步研究。

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