Hidden Phylogenomic Signal Helps Elucidate Arsenurine Silkmoth Phylogeny and the Evolution of Body Size and Wing Shape Trade-Offs
Hidden Phylogenomic Signal Helps Elucidate Arsenurine Silkmoth Phylogeny and the Evolution of Body Size and Wing Shape Trade-Offs
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DOI：
10.1093/sysbio/syab090
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发表时间：
2021-12-27
影响因子：
6.5
通讯作者：
Kawahara, Akito Y.
中科院分区：
文献类型：
--
作者：
Hamilton, Chris A.;Winiger, Nathalie;Kawahara, Akito Y.
生物学研究的关键目标之一是了解进化过程如何产生地球的多样性。揭示这些过程的关键一步是对进化权衡的研究，也就是说，多种选择力的相反压力。几千年来，夜行蛾在寻找配偶或寄主植物的同时，不得不在成功的飞行和躲避蝙蝠捕食者之间取得平衡。然而，人们对翅膀形状和身体大小之间的进化权衡的潜力知之甚少。在这项研究中，我们使用的基因组学和几何形态测量学研究的进化，在野蚕蛾亚科Arsenurinae（天蚕科）的翅膀形状和评估潜在的进化关系之间的身体大小和翅膀形状。基于来自代表所有10个公认属的42种砷化嘌呤的靶捕获数据的782个位点推断了砷化嘌呤发生。在我们的数据中检测到系统发育推断中最令人烦恼的问题之一--一棵树的一个区域拥有短分支并且没有关系的“支持”（即，一个多分裂），我们寻找隐藏的基因组信号（即，检查不同的系统发育推断、替代支持值、四元组和系统发育网络）以更好地阐明亚科内最可能的属关系。我们发现，有假定的进化权衡之间的翅膀形状，身体大小，以及相互作用的前，后翼（HW）的形状。也就是说，身体的大小往往会随着HW长度的增加而减少，但随着前翅（FW）形状变得更加复杂而增加。此外，HW的类型（即，尾或无尾）对FW形状的复杂性具有显著影响。我们概述了可能的选择力驱动复杂的HW形状，使Arsenurinae，和蚕作为一个整体，所以魅力。[锚定杂交富集; Arsenurinae;几何形态测量学;鳞翅目;昆虫基因组学;天蚕科。]
One of the key objectives in biological research is understanding how evolutionary processes have produced Earth's diversity. A critical step toward revealing these processes is an investigation of evolutionary tradeoffs-that is, the opposing pressures of multiple selective forces. For millennia, nocturnal moths have had to balance successful flight, as they search for mates or host plants, with evading bat predators. However, the potential for evolutionary trade-offs between wing shape and body size are poorly understood. In this study, we used phylogenomics and geometric morphometrics to examine the evolution of wing shape in the wild silkmoth subfamily Arsenurinae (Saturniidae) and evaluate potential evolutionary relationships between body size and wing shape. The phylogeny was inferred based on 782 loci from target capture data of 42 arsenurine species representing all 10 recognized genera. After detecting in our data one of the most vexing problems in phylogenetic inference-a region of a tree that possesses short branches and no "support" for relationships (i.e., a polytomy), we looked for hidden phylogenomic signal (i.e., inspecting differing phylogenetic inferences, alternative support values, quartets, and phylogenetic networks) to better illuminate the most probable generic relationships within the subfamily. We found there are putative evolutionary trade-offs between wing shape, body size, and the interaction of fore- and hindwing (HW) shape. Namely, body size tends to decrease with increasing HW length but increases as forewing (FW) shape becomes more complex. Additionally, the type of HW (i.e., tail or no tail) a lineage possesses has a significant effect on the complexity of FW shape. We outline possible selective forces driving the complex HW shapes that make Arsenurinae, and silkmoths as a whole, so charismatic. [Anchored hybrid enrichment; Arsenurinae; geometric morphometrics; Lepidoptera; phylogenomics; Saturniidae.]