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dc.contributor.authorSkovrind, Mikkel
dc.contributor.authorPacheco, George
dc.contributor.authorChristensen, Emil Aputsiaq Flindt
dc.contributor.authorGopalakrishnan, Shyam
dc.contributor.authorFietz, Katharina
dc.contributor.authorHolm-Hansen, Tore Hejl
dc.contributor.authorVieira, Filipe Garrett
dc.contributor.authorKrag, Marcus Anders
dc.contributor.authorCarl, Henrik
dc.contributor.authorGilbert, Marcus Thomas Pius
dc.contributor.authorOlsen, Morten Tange
dc.contributor.authorMøller, Peter Daniel Rask
dc.date.accessioned2023-10-16T05:17:32Z
dc.date.available2023-10-16T05:17:32Z
dc.date.issued2023-09-13
dc.description.abstractEnvironmental variation across the range of wild species can lead to local adaptations. The Baltic Sea was formed when the Fenno-Scandian ice sheet retreated around 12 thousand years ago, creating a new brackish water habitat colonised by both marine and freshwater fish species. The European perch (Perca fluviatilis) is a predatory freshwater fish with a large geographical distribution across Eurasia, where it inhabits a wide range of environmental niches. In the Baltic Sea region it has even developed a specialised brackish water perch variant that can tolerate environmental salinity levels, which are lethal to freshwater perch. However, very little is known about the underlying mechanisms facilitating the colonisation and adaptation of perch to the Baltic Sea. Here, we use Genotyping-By-Sequencing data from six freshwater and six brackish water localities to disclose the evolutionary relationship between freshwater and brackish water perch. Our results show that the brackish water perch occurs in multiple distinct genetic clusters. We find that gene flow between brackish water perch with full access to the sea likely led to lower levels of differentiation and higher diversity than in freshwater perch. Selection analyses suggest that genomic adaptation played a role in the colonisation of the Baltic Sea and that the top three regions under selection harbour salinity tolerance genes. We complete by discussing the implications of our findings for management of brackish water perch in the western Baltic sea.en_US
dc.identifier.citationSkovrind, Pacheco, Christensen, Gopalakrishnan, Fietz, Holm-Hansen, Vieira, Krag, Carl, Gilbert, Olsen, Møller. Uncovering neutral and adaptive genomic differentiation among European perch with brackish water and freshwater origin in the western Baltic Sea region. Fisheries Research. 2023;268en_US
dc.identifier.cristinIDFRIDAID 2179819
dc.identifier.doi10.1016/j.fishres.2023.106846
dc.identifier.issn0165-7836
dc.identifier.issn1872-6763
dc.identifier.urihttps://hdl.handle.net/10037/31556
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalFisheries Research
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2023 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.titleUncovering neutral and adaptive genomic differentiation among European perch with brackish water and freshwater origin in the western Baltic Sea regionen_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)