Genomic variation across the Yellow-rumped Warbler species complex

Détails

ID Serval
serval:BIB_894314075E8A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Genomic variation across the Yellow-rumped Warbler species complex
Périodique
Auk
Auteur(s)
Toews D.P.L., Brelsford A., Grossen C., Mila B., Irwin D.E.
ISSN
1938-4254
ISSN-L
0004-8038
Statut éditorial
Publié
Date de publication
2016
Volume
133
Numéro
4
Pages
698-717
Langue
anglais
Résumé
Populations that have experienced long periods of geographic isolation will diverge over time. The application of high-throughput sequencing technologies to study the genomes of related taxa now allows us to quantify, at a fine scale, the consequences of this divergence across the genome. Throughout a number of studies, a notable pattern has emerged. In many cases, estimates of differentiation across the genome are strongly heterogeneous; however, the evolutionary processes driving this striking pattern are still unclear. Here we quantified genomic variation across several groups within the Yellow-rumped Warbler species complex (Setophaga spp.), a group of North and Central American wood warblers. We showed that genomic variation is highly heterogeneous between some taxa and that these regions of high differentiation are relatively small compared to those in other study systems. We found that the clusters of highly differentiated markers between taxa occur in gene-rich regions of the genome and exhibit low within-population diversity. We suggest these patterns are consistent with selection, shaping genomic divergence in similar genomic regions across the different populations. Our study also confirms previous results relying on fewer genetic markers that several of the phenotypically distinct groups in the system are also genomically highly differentiated, likely to the point of full species status.
Mots-clé
evolutionary genomics, hybridization, gene flow, genotyping-by-sequencing, speciation, natural selection
Web of science
Création de la notice
11/11/2016 9:18
Dernière modification de la notice
20/08/2019 14:48
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