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首页> 外文期刊>Parasitology >Resource depletion in Aedes aegypti mosquitoes infected by the microsporidia Vavraia culicis.
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Resource depletion in Aedes aegypti mosquitoes infected by the microsporidia Vavraia culicis.

机译：埃及小蚊（Vavraia culicis）感染的埃及伊蚊的资源枯竭。

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SUMMARYParasitic infection is often associated with changes in host life-history traits, such as host development. Many of these life-history changes are ultimately thought to be the result of a depletion or reallocation of the host's resources driven either by the host (to minimize the effects of infection) or by the parasite (to maximize its growth rate). In this paper we investigate the energetic budget of Aedes aegypti mosquito larvae infected by Vavraia culicis, a microsporidian parasite that transmits horizontally between larvae, and which has been previously shown to reduce the probability of pupation of its host. Our results show that infected larvae have significantly less lipids, sugars and glycogen than uninfected larvae. These differences in resources were not due to differences in larval energy intake (feeding rate) or expenditure (metabolic rate). We conclude that the lower energetic resources of infected mosquitoes are the result of the high metabolic demands that microsporidian parasites impose on their hosts. Given the fitness advantages for the parasite of maintaining the host in a larval stage, we discuss whether resource depletion may also be a parasite mechanism to prevent the pupation of the larvae and thus maximize its own transmission.
机译：小结寄生虫感染通常与宿主生活史特征的变化（例如宿主发育）相关。最终，许多这些生命史的变化最终被认为是宿主资源耗尽或重新分配的结果，宿主资源是由宿主（以使感染的影响最小化）或寄生虫（以使其增长率最大）驱动的。在本文中，我们研究了被Vavraia culicis感染的埃及伊蚊蚊幼虫的能量预算，该病是一种在水平上在幼虫之间水平传播的微孢子虫寄生虫，以前已被证明可以降低其宿主化脓的可能性。我们的结果表明，与未感染的幼虫相比，被感染的幼虫具有明显更少的脂质，糖和糖原。这些资源差异并不是由于幼虫能量摄入（进食率）或支出（代谢率）的差异所致。我们得出的结论是，被感染蚊子的能量资源较低是微孢子虫寄生虫强加于其宿主的高代谢要求的结果。鉴于寄生虫在幼虫阶段保持寄主的适应性优势，我们讨论了资源枯竭是否也可能是防止幼虫化up从而最大化自身传播的寄生虫机制。

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