物种能否经受大规模引种?Melitaea 蝴蝶非对称基因流的基因组证据

IF 4.7 1区 农林科学 Q1 ENTOMOLOGY Systematic Entomology Pub Date : 2024-03-16 DOI:10.1111/syen.12631
Joan C. Hinojosa, Valéria Marques, Luis Sánchez Mesa, Leonardo Dapporto, Vlad Dincă, Roger Vila
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引用次数: 0

摘要

杂交和引种越来越被视为生物进化的重要驱动力,尤其是在鳞翅目昆虫中。由于最近公布的种间基因流案例,蛱蝶属(Melitaea Fabricius)成为一个越来越受关注的类群。在本研究中,我们利用基因组学方法研究了杂交在 Melitaea phoebe 群 M. ornata Christoph、最近描述的 M. pseudornata Muñoz Sariot & Sánchez Mesa、M. phoebe (Denis & Schiffermüller)、M. punica Oberthür 和 M. telona (Fruhstorfer) 西古北物种进化过程中的作用。我们提供了从 M. phoebe 到 M. ornata 和 M. pseudornata 的不对称基因流的证据。从M. phoebe到M. pseudornata的基因流动非常高(25.0%-31.9%),广泛分布于后者的整个分布区,而且沿基因组的分布不均。Z 染色体显示出与大 Z 效应相一致的模式,两个常染色体模仿了这种模式。尽管基因流可能改变了其表型,包括伏毛以及成虫和毛虫的形态,但Melitaea pseudornata在经受了大规模引种的同时,仍与M. phoebe保持着独立的个体。这些发现表明,杂交在该属中可能很普遍,并突出了其在蝴蝶进化中的关键作用,强调了进一步研究该课题的必要性。
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Can species endure massive introgression? Genomic evidence of asymmetric gene flow in Melitaea butterflies

Hybridisation and introgression are increasingly seen as important drivers of the evolution of organisms, particularly in Lepidoptera. One group that is gaining attention due to recently published cases of interspecific gene flow is the genus Melitaea Fabricius (Nymphalidae). In this study, we used genomics to investigate the role of hybridisation in the evolution of the western Palearctic species of the Melitaea phoebe group M. ornata Christoph, the recently described M. pseudornata Muñoz Sariot & Sánchez Mesa, M. phoebe (Denis & Schiffermüller), M. punica Oberthür, and M. telona (Fruhstorfer). We provide evidence of asymmetric gene flow from M. phoebe to both M. ornata and M. pseudornata. Gene flow from M. phoebe to M. pseudornata was very high (25.0%–31.9%), widespread throughout the distribution of the latter, and not equally distributed along the genome. The Z chromosome showed patterns compatible with the large-Z effect, which were mimicked by two autosomes. Melitaea pseudornata endured massive introgression while remaining a separate entity from M. phoebe, although gene flow may have altered its phenotype, including its voltinism and the morphology of the adults and caterpillars. These findings suggest that hybridisation may be pervasive in this genus and highlight its key role in the evolution of butterflies, emphasising the need for further research on this topic.

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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.
期刊最新文献
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