摘要：合子后隔离屏障稳定了两个长喙鸟种之间的杂交区。

IF 2.6 2区环境科学与生态学 Q2 ECOLOGY

Evolution Pub Date : 2025-10-10 DOI:10.1093/evolut/qpaf210

Jente Ottenburghs

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引用次数: 0

摘要

物种形成涉及通过合子前或合子后屏障建立生殖隔离。关于鸟类物种形成的研究强调了合子前屏障的作用，而合子后屏障的作用仍然被低估。DeRaad等人（2025）利用基因组数据重新考察了两个长喙鸟物种之间的杂交区，发现杂交正在进行，但对后代杂交的选择强烈，与有丝核不相容一致。这些结果表明，合子后分离，无论是内在的还是外在的，对于维持杂交区是必不可少的。

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Digest: Postzygotic isolation barriers stabilize a hybrid zone between two grosbeak species.

Speciation involves the build-up of reproductive isolation through prezygotic or postzygotic barriers. Research on avian speciation has emphasized the role of prezygotic barriers, whereas postzygotic barriers have remained underappreciated. Revisiting the hybrid zone between two grosbeak species with genomic data, DeRaad et al. (2025) detected ongoing hybridization but strong selection against later-generation hybrids, consistent with mitonuclear incompatibilities. These results demonstrate that postzygotic isolation, whether intrinsic or extrinsic, can be essential in maintaining a hybrid zone.

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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.