Digest: Stabilizing selection drives sperm length divergence in promiscuous passerines.

IF 3.1 2区环境科学与生态学 Q2 ECOLOGY

Evolution Pub Date : 2025-02-03 DOI:10.1093/evolut/qpae176

Jente Ottenburghs

引用次数: 0

Abstract

Divergence in gametic traits can play a key role in reproductive isolation. Lifjeld et al. (2025) examined the evolution of sperm length in pairs of songbird populations at various stages along the speciation continuum. Their analyses demonstrated that sperm length diverges more rapidly in species with higher levels of female promiscuity, likely due to stabilizing selection favoring sperm cells that fit within female sperm storage structures. This divergence in sperm length may kickstart speciation in promiscuous songbirds.

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摘要：在滥交的雀形目动物中，稳定的选择驱动精子长度分化。

配子性状的分化在生殖隔离中起着关键作用。Lifjeld等人（2024）在物种形成连续体的不同阶段对鸣禽种群的精子长度进行了研究。他们的分析表明，在雌性滥交程度较高的物种中，精子长度的差异更快，这可能是由于稳定的选择倾向于适合雌性精子储存结构的精子细胞。这种精子长度的差异可能会在滥交的鸣禽中启动物种形成。

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

Evolution 环境科学-进化生物学

CiteScore

5.00

自引率

9.10%

发文量

审稿时长

3-6 weeks

期刊介绍： Evolution, published for the Society for the Study of Evolution, is the premier publication devoted to the study of organic evolution and the integration of the various fields of science concerned with evolution. The journal presents significant and original results that extend our understanding of evolutionary phenomena and processes.