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Evolutionary diversification of the gall midge genus Asteromyia (Cecidomyiidae) in a multitrophic ecological context

机译:在多营养生态环境中,mid蚊不育属(Cecidomyiidae)的进化多样性

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摘要

Gall-forming insects provide ideal systems to analyze the evolution of host-parasite interactions and understand the ecological interactions that contribute to evolutionary diversification. Flies in the family Cecidomyiidae represent the largest radiation of gall-forming insects and are characterized by complex trophic interactions with plants, fungal symbionts, and predators. We analyzed the phylogenetic history and evolutionary associations of the North American cecidomyiid genus Asteromyia, which is engaged in a complex and perhaps co-evolving community of interactions with host-plants, fungi, and parasitoids. Mitochondrial gene trees generally support current classifications, but reveal extensive cryptic diversity within the eight named species. Asteromyia likely radiated after their associated host-plants in the Astereae, but species groups exhibit strong associations with specific lineages of Astereae. Evolutionary associations with fungal mutualists are dynamic, however, and suggest rapid and perhaps coordinated changes across trophic levels.
机译:形成胆虫的昆虫提供了理想的系统来分析宿主-寄生虫相互作用的进化,并了解有助于进化多样化的生态相互作用。 Cecidomyiidae科的蝇代表形成胆虫的最大辐射,其特征是与植物,真菌共生体和捕食者的复杂营养相互作用。我们分析了北美切花虫属Asteromyia的系统进化史和进化关联,Asteromyia参与了与宿主植物,真菌和类寄生虫相互作用的复杂且共同进化的社区。线粒体基因树通常支持当前分类,但是揭示了八个命名物种中广泛的隐秘多样性。在其相关的寄主植物中,星形菌可能会放射出来,但是物种组与特定的菌丝家族有很强的联系。然而,与真菌互惠主义者的进化联系是动态的,并暗示了营养级之间的快速甚至协调的变化。

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