{"title":"Digest: Chance and necessity shape introgression patterns across three replicate avian hybrid zones.","authors":"Jente Ottenburghs","doi":"10.1093/evolut/qpag058","DOIUrl":null,"url":null,"abstract":"<p><p>Predicting evolutionary outcomes remains a central challenge in biology. Using three replicate hybrid zones in the Western Andes of Colombia, Castaño et al. (2026) assessed the repeatability of introgression between Lemon-rumped and Flame-rumped Tanagers. Genomic cline analyses revealed heterogeneous patterns of neutral introgression, but deterministic introgression at a plumage-associated locus on chromosome 22. Together, these patterns show that introgression reflects a balance of chance and necessity, with selection generating predictable outcomes amid substantial genomic contingency.</p>","PeriodicalId":12082,"journal":{"name":"Evolution","volume":" ","pages":"1886-1887"},"PeriodicalIF":3.0000,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Evolution","FirstCategoryId":"93","ListUrlMain":"https://doi.org/10.1093/evolut/qpag058","RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
Predicting evolutionary outcomes remains a central challenge in biology. Using three replicate hybrid zones in the Western Andes of Colombia, Castaño et al. (2026) assessed the repeatability of introgression between Lemon-rumped and Flame-rumped Tanagers. Genomic cline analyses revealed heterogeneous patterns of neutral introgression, but deterministic introgression at a plumage-associated locus on chromosome 22. Together, these patterns show that introgression reflects a balance of chance and necessity, with selection generating predictable outcomes amid substantial genomic contingency.
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.
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