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dc.contributor.authorFerchaud, Anne-Laure
dc.contributor.authorNormandeau, Eric
dc.contributor.authorBabin, Charles
dc.contributor.authorPræbel, Kim
dc.contributor.authorHedeholm, Rasmus
dc.contributor.authorAudet, Celine
dc.contributor.authorMorgan, Joanne
dc.contributor.authorWalkusz, Wojciech
dc.contributor.authorSirois, Pascal
dc.contributor.authorBernatchez, Louis
dc.date.accessioned2022-11-07T09:48:37Z
dc.date.available2022-11-07T09:48:37Z
dc.date.issued2022-09-02
dc.description.abstractCharacterizing the extent of genetic differentiation among individuals and its distribution across the genome is increasingly important to inform both conservation and management of exploited species. The Greenland Halibut is one of the main demersal fish species to be commercially exploited in Eastern Canada, and accurate information on geographic population structure and local adaptation is required to ensure the long-term presence of this species. We generated high-quality whole-genome sequencing data for 1,297 Greenland Halibut sampled across 32 locations throughout the Northwest Atlantic (from Arctic Canadian and Greenlandic coasts to the Gulf of St Lawrence). Population genetic structure was analyzed, revealing an absence of population differentiation between Canada and west Greenland but significant genetic differentiation between the Gulf of Saint Lawrence and the remainder of the Northwest Atlantic. Except for Gulf of Saint Lawrence, Greenland Halibut thus appear to be panmictic throughout the Northwest Atlantic. Environmental Association Analyses revealed that the environment explained up to 51 % might be replaced by 51% of the differentiation observed between the two stocks, with both ocean-bottom and surface variables (e.g., temperature and oxygen) involved in the observed genomic differentiation. Altogether, these results indicate that phenotypic differences previously observed between the Gulf of Saint Lawrence and the Northwest Atlantic likely resulted from functional adaptive divergence to their respective environmental conditions. Using coalescent simulations, we also assessed how high levels of migration between the two stocks would allow Greenland Halibut to potentially escape unfavorable environmental conditions in the Gulf of Saint Lawrence. In addition to supporting the management of this important exploited species, this work highlights the utility of using comprehensive genomic datasets to characterize the effects of climate change across a wider range of species.en_US
dc.identifier.citationFerchaud A, Normandeau E, Babin, Præbel K, Hedeholm R, Audet C, Morgan, Walkusz W, Sirois P, Bernatchez L. A cold-water fish striving in a warming ocean: Insights from whole-genome sequencing of the Greenland halibut in the Northwest Atlantic. Frontiers in Marine Science. 2022;9en_US
dc.identifier.cristinIDFRIDAID 2060256
dc.identifier.doi10.3389/fmars.2022.992504
dc.identifier.issn2296-7745
dc.identifier.urihttps://hdl.handle.net/10037/27265
dc.language.isoengen_US
dc.publisherFrontiers Mediaen_US
dc.relation.journalFrontiers in Marine Science
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2022 The Author(s)en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0en_US
dc.rightsAttribution 4.0 International (CC BY 4.0)en_US
dc.titleA cold-water fish striving in a warming ocean: Insights from whole-genome sequencing of the Greenland halibut in the Northwest Atlanticen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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Attribution 4.0 International (CC BY 4.0)
Med mindre det står noe annet, er denne innførselens lisens beskrevet som Attribution 4.0 International (CC BY 4.0)