Transstadial metabolic priming mediated by larval nutrition in female Aedes albopictus mosquitoes.,Journal of Insect Physiology

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Transstadial metabolic priming mediated by larval nutrition in female Aedes albopictus mosquitoes.
Journal of Insect Physiology ( IF 2.3 ) Pub Date : 2020-04-03 , DOI: 10.1016/j.jinsphys.2020.104053
Jessica Dittmer ₁ , Paolo Gabrieli ₁

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Mosquitoes are important vectors of human pathogens, which are transmitted by female mosquitoes via blood-feeding. Larval nutrition can have an important impact on the number of blood meals taken by adult females shortly after emergence, as nutritional deficiencies during the larval stage may result in pre-vitellogenic blood meals, which are not invested into egg development but into the endogenous nutrient reserves of the female. Here, we investigated the impact of nutrient deprivation during the larval stage on adult nutrient metabolism, longevity and blood-seeking behaviour in females of the invasive Asian tiger mosquito Aedes albopictus. We demonstrate that Ae. albopictus females are able to compensate for nutrient deprivation during the larval stage by increasing their development time until sufficient nutrients are acquired. Nonetheless, nutrient-poor larval conditions had a long-lasting priming effect on adult female metabolism, since these females accumulated lower nutrient reserves from carbohydrates and survived longer compared to females reared in nutrient-rich larval conditions. Moreover, nutrient and ATP levels of females from nutrient-poor larval conditions remained stable over a longer timespan without access to additional carbohydrates. This suggests differences in adult female metabolism in response to larval nutrition, with potential impact on the vectorial capacity of female mosquitoes.

中文翻译：

雌性白纹伊蚊蚊幼虫营养介导的过渡代谢启动。

蚊子是人类病原体的重要载体，雌性蚊子通过采血传播蚊子。幼虫的营养可能会对成年后成年女性的血粉数量产生重要影响，因为幼虫阶段的营养不足可能会导致前卵母性血粉，这不用于卵子发育，而是用于内源性养分储备女性。在这里，我们调查了侵略性亚洲虎蚊白纹伊蚊女性在幼虫期营养剥夺对成年营养代谢，寿命和寻血行为的影响。我们证明了Ae。白种雌性能够通过增加其发育时间直到获得足够的营养来补偿幼体阶段的营养缺乏。尽管如此，营养不良的幼体条件对成年雌性代谢具有长效的启动作用，因为与在营养丰富的幼体条件下饲养的雌性相比，这些雌性从碳水化合物中积累了较低的营养储备，并且存活时间更长。此外，缺乏营养的幼体条件下的雌性的营养和ATP水平在较长的时间内仍保持稳定，而无法获取其他碳水化合物。这表明成年雌性对幼虫营养的反应不同，对雌性蚊子的媒介能力有潜在影响。在缺乏营养的情况下，长期缺乏营养的幼虫的雌性营养和ATP水平保持稳定。这表明成年雌性对幼虫营养的反应不同，对雌性蚊子的媒介能力有潜在影响。在缺乏营养的情况下，长期缺乏营养的幼虫的雌性营养和ATP水平保持稳定。这表明成年雌性对幼虫营养的反应不同，对雌性蚊子的媒介能力有潜在影响。

更新日期：2020-04-21

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