The life history fitness of F1 hybrids of the microcrustaceans Daphnia pulex and Daphnia pulicaria (Crustacea, Anomopoda)

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2021-04-20 DOI:10.1111/ivb.12333

Irene Moy, Makayla Green, Thinh Phu Pham, Dustin Huy-Khang Luu, Sen Xu

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引用次数: 0

Abstract

Negative interaction between alleles that arise independently in diverging populations (i.e., Dobzhansky–Muller incompatibilities) can cause reduction of fitness in their hybrids. However, heterosis in hybrids can emerge if hybridization breaks down detrimental epistatic interaction within parental lineages. In this study, we examined the life history fitness of the interspecific F₁s of two recently diverged microcrustacean species, Daphnia pulex and D. pulicaria, as well as intraspecific crosses of D. pulex. We identified heterosis in two of five life history traits in the interspecific F₁s. According to theories that heterosis can transiently emerge in early speciation, the observation of heterosis in these life history traits suggests that there are no major genetic incompatibilities between these two species affecting these traits and that D. pulex and D. pulicaria are at an early stage of speciation.

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微甲壳类水蚤和水蚤F1杂交的生活史适应度(甲壳纲，Anomopoda)

在分化群体中独立产生的等位基因之间的负相互作用(即Dobzhansky-Muller不相容)会导致其杂种的适应度降低。然而，杂种优势可以出现，如果杂交打破了有害的上位相互作用亲本谱系。本研究研究了两个新近分化的微甲壳类物种水蚤(Daphnia pulex)和水蚤(d.p ulicaria)种间F1s的生活史适应度，以及水蚤的种内杂交。我们在种间F1s的5个生活史性状中发现了2个杂种优势。根据杂种优势可以在物种形成早期短暂出现的理论，对这些生活史性状的杂种优势观察表明，这两个物种之间不存在影响这些性状的主要遗传不亲和性，并且这两个物种处于物种形成的早期阶段。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.