Cameron D. Schwing, Christopher J. Holmes, Ephantus J. Muturi, Christopher Dunlap, Jessica R. Holmes, Carla E. Cáceres
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引用次数: 0
摘要
宿主相关微生物群落的组合受到多种因素的影响，但微生物群落对宿主表型的影响往往不甚明了。为了解决食物网对宿主微生物群落组成的影响问题，我们操纵了库蚊幼虫的资源环境（仅草[G]与草+营养物[GN]）、竞争类型（种内与种间）和密度（高与低）。我们预测四龄幼虫体内的微生物群落在这些环境处理中会有所不同，而且这些处理会转化为成虫表型的差异。资源环境和密度影响了幼虫微生物群落。此外，与自由生活的微生物群落相比，幼虫微生物群落表现出明显的差异。幼虫样本中由资源驱动的差异可归因于 Arcobacteraceae 在 GN 处理中饲养的幼虫比在 G 处理中饲养的幼虫数量更多，以及 Comamonadaceae 在 G 处理中数量更多。虽然密度处理之间的群落结构差异显著，但很难辨别。这似乎是由于Weeksellaceae仅在高密度、种间、GN处理中含量丰富。在食物严重不足的情况下将幼虫饲养到成年，两种资源环境中的存活率都很低（25%）。大约 60% 的成年存活者为雄性。在种内 G 处理中饲养的幼虫发育到成虫的时间最短，成虫体型最小。这些结果表明，环境变化可显著改变自由生活微生物的α和β多样性，进而显著影响宿主表型和关键的生活史特征，如发育时间、成年体型和存活率。这些发现凸显了考虑环境对微生物组多样性的影响对理解和预测宿主结果的重要性，为生态学、公共卫生和农业等领域的各种应用提供了宝贵的见解。
期刊介绍：
Ecological Entomology publishes top-quality original research on the ecology of insects and related invertebrate taxa. Our aim is to publish papers that will be of considerable interest to the wide community of ecologists who are motivated by ecological or evolutionary theory. The suitability of a manuscript will usually be assessed within 5 days.
We publish full-length Original Articles as well as Reviews, Short Communications, Methods and Natural History papers. In Original Articles, we greatly prefer papers that test specific hypotheses and which have a high degree of novelty. All categories aim for innovative contributions that advance the subject of ecological entomology.
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