Genomic Introgression and Adaptation of Southern Seabird Species Facilitate Recent Polar Colonization.

ABSTRACT: Genomic adaptation and introgression can occur during the speciation process, enabling species to diverge in their frequencies of adaptive alleles or acquire new alleles that may promote adaptation to environmental changes. There is limited information on introgression in organisms from extreme environments and their responses to climate change. To address these questions, we focused on the 3 southern skua species, selected for their widespread distribution across the Southern Hemisphere and their complex history of speciation and introgression events. Our genomic data reveal that these skuas underwent diversification around the Penultimate Glacial Period, followed by subsequent demographic expansion. We identified a geographic region of introgression among species that followed a directio

SUBMITTER: Jorquera J 

PROVIDER: S-EPMC11954569 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature