Phylogenomic analysis of protein-coding genes resolves complex gall wasp relationships

IF 4.7 1区 农林科学 Q1 ENTOMOLOGY
Jack Hearn, Erik Gobbo, José Luis Nieves-Aldrey, Antoine Branca, James A. Nicholls, Georgios Koutsovoulos, Nicolas Lartillot, Graham N. Stone, Fredrik Ronquist
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Abstract

Gall wasps (Hymenoptera: Cynipidae) comprise 13 distinct tribes whose interrelationships remain incompletely understood. Recent analyses of ultra-conserved elements (UCEs) represent the first attempt at resolving these relationships using phylogenomics. Here, we present the first analysis based on protein-coding sequences from genome and transcriptome assemblies. Unlike UCEs, these data allow more sophisticated substitution models, which can potentially resolve issues with long-branch attraction. We include data for 37 cynipoid species, including two tribes missing in the UCE analysis: Aylacini (s. str.) and Qwaqwaiini. Our results confirm the UCE result that Cynipidae are not monophyletic. Specifically, the Paraulacini and Diplolepidini + Pediaspidini fall outside a core clade (Cynipidae s. str.), which is more closely related to the insect-parasitic Figitidae, and this result is robust to the exclusion of long-branch taxa that could mislead the analysis. Given this, we here divide the Cynipidae into three families: the Paraulacidae stat. prom., Diplolepididae stat. prom. and Cynipidae (s. str.). Our results suggest that the Eschatocerini are the sister group of the remaining Cynipidae (s. str.). Within the Cynipidae (s. str.), the Aylacini (s. str.) are more closely related to oak gall wasps (Cynipini) and some of their inquilines (Ceroptresini) than to other herb gallers (Aulacideini and Phanacidini), and the Qwaqwaiini likely form a clade together with Synergini (s. str.) and Rhoophilini. Several alternative scenarios for the evolution of cynipid life histories are compatible with the relationships suggested by our analysis, but all are complex and require multiple shifts among parasitoids, inquilines and gall inducers.

Abstract Image

Abstract Image

蛋白质编码基因的系统进化分析解析了复杂的五倍子蜂关系
瘿蜂(膜翅目:瘿蜂科)由 13 个不同的支系组成,它们之间的相互关系仍然不完全清楚。最近对超保守元素(UCEs)的分析是利用系统发生组学解决这些关系的首次尝试。在这里,我们首次基于基因组和转录组组装的蛋白质编码序列进行了分析。与 UCE 不同,这些数据可以建立更复杂的替代模型,从而有可能解决长分支吸引的问题。我们纳入了 37 个犬齿目物种的数据,其中包括两个在 UCE 分析中缺失的部族:Aylacini (s. str.) 和 Qwaqwaiini。我们的结果证实了 UCE 的结果,即鲤形目(Cynipidae)不是单系的。具体地说,Paraulacini 和 Diplolepidini + Pediaspidini 位于核心支系(Cynipidae s. str.)之外,与昆虫寄生的 Figitidae 关系更为密切。有鉴于此,我们在此将鲤科(Cynipidae)分为三科:Paraulacidae stat.我们的研究结果表明,Eschatocerini 是其余 Cynipidae(s. str.)的姊妹群。在Cynipidae(s. str.)中,Aylacini(s. str.)与橡树瘿蜂(Cynipini)及其一些内喙蜂(Ceroptresini)的亲缘关系比与其他草本瘿蜂(Aulacideini和Phanacidini)的亲缘关系更近,Qwaqwaiini可能与Synergini(s. str.)和Rhoophilini组成一个支系。鹤虱生活史进化的几种替代方案与我们的分析所提出的关系是一致的,但所有方案都很复杂,需要寄生虫、绻虫和虫瘿诱导体之间的多重转变。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Systematic Entomology
Systematic Entomology 生物-进化生物学
CiteScore
10.50
自引率
8.30%
发文量
49
审稿时长
>12 weeks
期刊介绍: Systematic Entomology publishes original papers on insect systematics, phylogenetics and integrative taxonomy, with a preference for general interest papers of broad biological, evolutionary or zoogeographical relevance.
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