扭翅寄生虫 Stylops 属(Strepsiptera)的系统发生学物种划分

IF 4.7 1区 农林科学 Q1 ENTOMOLOGY
Meri Lähteenaro, Jakub Straka, Mattias Forshage, Rasmus Hovmöller, Yuta Nakase, Anders L. Nilsson, John T. Smit, Johan A. A. Nylander, Johannes Bergsten
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引用次数: 0

摘要

在全北极不同地区,扭曲翼寄生虫属茎柱具有不同的物种概念和不同的宿主特异性,导致物种多样性估计不同。欧洲采用了一种超通用化的物种概念,建议将所有西部古北柱花草物种同义化,这不利于分类的明确,并使该地区几十年来可用的生活史数据变得模糊。分子数据的缺乏使得对物种假设的意见分歧,并且很少有机会在这个形态学上具有挑战性的属中评估它们。为了解决这些差异并获得有关宿主关联的新信息,我们对163个标本进行了全基因组测序,这些标本代表了假定的欧洲物种的很大一部分。我们评估现有的和相互冲突的物种假设与分子物种划分使用物种边界划分使用星界(SODA),并使用最大似然系统发育研究物种的宿主关联。此外,我们评估了SODA中使用的一些基因座对推断物种数量的影响。我们发现了多个物种同义化的理由和未描述物种的迹象,以及新的宿主-寄生虫关系。我们发现SODA中推断物种的数量与使用的位点数量呈极显著正相关,建议谨慎使用。本研究结果使古北西部柱花草物种多样性更加清晰。此外,本研究建立的完整的分子数据集将为柱花草和寄生虫进化的进一步研究提供宝贵的资源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Phylogenomic species delimitation of the twisted-winged parasite genus Stylops (Strepsiptera)

Phylogenomic species delimitation of the twisted-winged parasite genus Stylops (Strepsiptera)

Phylogenomic species delimitation of the twisted-winged parasite genus Stylops (Strepsiptera)

The twisted-winged parasite genus Stylops has a history of different species concepts with varying host specificity resulting in diverse species diversity estimates in different regions of the Holarctic. The adoption of a supergeneralist species concept in Europe, proposing synonymization of all Western Palaearctic Stylops species, did not facilitate taxonomic clarity and obscured the available life-history data in the region for decades. Lack of molecular data has allowed divergent opinions on species hypotheses and little opportunity for evaluating them in this morphologically challenging genus. To solve these discrepancies and gain novel information about host associations, we applied whole-genome sequencing to 163 specimens, representing a significant portion of putative European species. We evaluate the existing and conflicting species hypotheses with molecular species delimitation using Species bOundry Delimitation using Astral (SODA) and use a maximum likelihood phylogeny to investigate host associations of the species. Furthermore, we evaluate the effect of a number of loci used in SODA for the number of inferred species. We find justification for synonymization of multiple species and indications of undescribed species, as well as new host–parasite relationships. We show that the number of inferred species in SODA is exceedingly and positively correlated with the number of loci used, urging for cautious application. The results of our study bring clarity to the Western Palaearctic species diversity of Stylops. Furthermore, the comprehensive molecular dataset generated in this study will be a valuable resource for future studies on Stylops and the evolution of parasites in general.

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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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