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

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dc.catalogadorgrr
dc.contributor.authorJorquera Faundez, Maria Josefina
dc.contributor.authorMorales, Lucina
dc.contributor.authorNg, Elize Y.X.
dc.contributor.authorNoll, Daly
dc.contributor.authorPertierra, Luis R.
dc.contributor.authorPliscoff, Patricio
dc.contributor.authorBalza, Ulises
dc.contributor.authorBoulinier, Thierry
dc.contributor.authorGamble, Amandine
dc.contributor.authorKasinsky, Tatiana
dc.contributor.authorMcInnes, Julie C.
dc.contributor.authorMarin, Juan Carlos
dc.contributor.authorOlmastroni, Silvia
dc.contributor.authorPistorius, Pierre
dc.contributor.authorPhillips, Richard A.
dc.contributor.authorGonzalez-Solis, Jacob
dc.contributor.authorEmmerson, Louise
dc.contributor.authorPoulin, Elie
dc.contributor.authorBowie, Rauri C.K.
dc.contributor.authorBurridge, Christopher P.
dc.contributor.authorVianna, Juliana
dc.date.accessioned2025-04-29T17:33:32Z
dc.date.available2025-04-29T17:33:32Z
dc.date.issued2025
dc.description.abstractGenomic 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 directional pattern sourced from the Antarctic continent, South America, and east to west in subantarctic islands, all converging towards the Antarctic Peninsula. The 3 skua species and admixed individuals exhibited a unique pattern of putative genes under selection, allowing adaptation to extreme conditions. Individuals with a higher proportion of Brown Skua ancestry showed signs of selection on genes related to reproductive isolation, while admixed individuals with a higher proportion of South Polar Skua ancestry displayed patterns resembling those of the South Polar Skua. Introgression may be a key mechanism of adaptation for many species that may help buffer against the ongoing climate change.
dc.fechaingreso.objetodigital2025-04-29
dc.format.extent20 páginas
dc.fuente.origenORCID
dc.identifier.doi10.1093/molbev/msaf053
dc.identifier.issn1537-1719
dc.identifier.pubmedid40111469
dc.identifier.scopusidSCOPUS_ID:105002490690
dc.identifier.urihttps://doi.org/10.1093/molbev/msaf053
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/103523
dc.information.autorucFacultad de Ciencias Biológicas; Jorquera Faundez Maria Josefina; 0009-0006-6538-5011; 1027834
dc.information.autorucFacultad de Ciencias Biológicas; Pliscoff, Patricio; 0000-0002-5971-8880; 1435
dc.information.autorucFacultad de Ciencias Biológicas; Vianna, Juliana; 0000-0003-2330-7825; 158861
dc.issue.numero4
dc.language.isoen
dc.nota.accesocontenido completo
dc.revistaMolecular biology and evolution
dc.rightsacceso abierto
dc.subjectComparative population genomics
dc.subjectFuture niche projections
dc.subjectPolar regions
dc.subjectPositive selection
dc.subjectSpeciation
dc.subject.ddc570
dc.subject.deweyBiologíaes_ES
dc.subject.ods13 Climate action
dc.subject.odspa13 Acción por el clima
dc.titleGenomic Introgression and Adaptation of Southern Seabird Species Facilitate Recent Polar Colonization
dc.typeartículo
dc.volumen42
sipa.codpersvinculados1027834
sipa.codpersvinculados1435
sipa.codpersvinculados158861
sipa.trazabilidadSCOPUS;2025-04-20
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