Kohli Manpreet, Letsch Harald, Greve Carola, Béthoux Olivier, Deregnaucourt Isabelle, Liu Shanlin, Zhou Xin, Donath Alexander, Mayer Christoph, Podsiadlowski Lars, Gunkel Simon, Machida Ryuichiro, Niehuis Oliver, Rust Jes, Wappler Torsten, Yu Xin, Misof Bernhard, Ware Jessica
Department of Invertebrate Zoology, American Museum of Natural History, New York, NY, USA.
Department for Animal Biodiversity, Universität Wien, Vienna, Austria.
iScience. 2021 Oct 21;24(11):103324. doi: 10.1016/j.isci.2021.103324. eCollection 2021 Nov 19.
Dragonflies and damselflies are among the earliest flying insects with extant representatives. However, unraveling details of their long evolutionary history, such as egg laying (oviposition) strategies, is impeded by unresolved phylogenetic relationships, particularly in damselflies. Here we present a transcriptome-based phylogenetic reconstruction of Odonata, analyzing 2,980 protein-coding genes in 105 species representing nearly all the order's families. All damselfly and most dragonfly families are recovered as monophyletic. Our data suggest a sister relationship between dragonfly families of Gomphidae and Petaluridae. According to our divergence time estimates, both crown-Zygoptera and -Anisoptera arose during the late Triassic. Egg-laying with a reduced ovipositor apparently evolved in dragonflies during the late Jurassic/early Cretaceous. Lastly, we also test the impact of fossil choice and placement, particularly, of the extinct fossil species, †, and † on divergence time estimates. We find placement of † to be much more impactful than †.
蜻蜓和豆娘是现存最早的飞行昆虫之一。然而，由于系统发育关系尚未明确，尤其是在豆娘中，揭示它们漫长进化历史的细节，如产卵（排卵）策略，受到了阻碍。在这里，我们展示了基于转录组的蜻蜓目系统发育重建，分析了代表几乎所有该目科的105个物种中的2980个蛋白质编码基因。所有豆娘科和大多数蜻蜓科都被恢复为单系类群。我们的数据表明，大蜓科和大痣蟌科的蜻蜓科之间存在姐妹关系。根据我们对分歧时间的估计，冠蟌亚目和差翅亚目均在晚三叠世出现。产卵器缩短的产卵方式显然是在侏罗纪晚期/白垩纪早期的蜻蜓中进化而来的。最后，我们还测试了化石选择和位置，特别是已灭绝化石物种†和†对分歧时间估计的影响。我们发现†的位置比†的影响大得多。
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