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首页> 外文期刊>Journal of Medical Entomology >Influence of sugar availability and indoor microclimate on survival of Anopheles gambiae (Diptera : Culicidae) under semifield conditions in western Kenya
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Influence of sugar availability and indoor microclimate on survival of Anopheles gambiae (Diptera : Culicidae) under semifield conditions in western Kenya

机译：肯尼亚西部半田条件下糖的供应和室内微气候对冈比亚按蚊（Diptera：Culicidae）生存的影响

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摘要

The influence of indoor microclimate on survival of female Anopheles gambiae sensu stricto Giles (Diptera: culicidae) mosquitoes fed on different nutrition sources was evaluated in a semifield experimental hut exposed to ambient climate in western Kenya. Cages of mosquitoes (n approximate to 50 per cage) were placed in nine positions within the hut combining three different sides and three different heights. At each height and side, mosquitoes were offered either human blood (once every 2 d), glucose (6% wt:vol) or a combination of the two diets over three experiments so that each cage position received one diet source. The effect of diet on survival was significant with mean survival times of 14 d for mosquitoes fed blood alone, 29 d for sugar alone and 33 d for blood plus sugar. Sugar availability decreased the odds of mortality approximate to85% compared with the blood group. Micro heterogeneities of temperature but not relative humidity also influenced survival although to a much lesser extent. The side but not height within the hut at which mosquitoes were placed, influenced survival but could not be explained by either temperature or relative humidity differences. The potential influence of seemingly minor heterogeneities of indoor microclimate upon vector longevity and vectorial capacity may merit further investigation. Also, the availability of sugar was shown to be a potentially crucial determinant of vectorial capacity. Compared with blood alone, the availability of sugar served to increase survival potential of vectors beyond ages at which they are old enough to transmit malaria.
机译：在肯尼亚西部暴露于周围气候的半田间实验小屋中，评估了室内微气候对饲喂不同营养源的雌性冈比亚按蚊（Diptera：culicidae）蚊子生存的影响。将蚊子的笼子（每笼n个大约50个）放在小屋内的九个位置，其中包括三个不同的侧面和三个不同的高度。在三个实验中，在每个高度和侧面向蚊子提供人血（每2天一次），葡萄糖（6％wt：vol）或两种饮食的组合，以便每个笼子位置接受一种饮食来源。饮食对生存的影响是显着的，仅喂食血液的蚊子的平均生存时间为14 d，单独喂糖的蚊子的平均生存时间为29 d，血液加糖的平均生存时间为33 d。与血型相比，糖的可利用性使死亡率降低了约85％。温度的微小异质性而不是相对湿度也影响生存，尽管程度要小得多。放置蚊子的小屋的侧面而不是高度会影响生存，但不能通过温度或相对湿度的差异来解释。室内微气候看似较小的异质性对载体寿命和载体能力的潜在影响可能值得进一步研究。同样，糖的可用性被证明是矢量能力的潜在关键决定因素。与仅血液相比，糖的可利用性增加了超过足以传播疟疾的年龄的载体的生存潜力。

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