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dc.contributor.authorBekkevold, Dorte
dc.contributor.authorKnutsen, Halvor
dc.contributor.authorHemmer-Hansen, Jakob
dc.contributor.authorSodeland, Marte
dc.contributor.authorHöjesjö, Johan
dc.contributor.authorBleeker, Katinka
dc.contributor.authorAarestrup, Kim
dc.contributor.authorSkov, Christian Egander
dc.contributor.authorNielsen, Einar E
dc.date.accessioned2024-12-02T09:28:58Z
dc.date.available2024-12-02T09:28:58Z
dc.date.created2024-11-27T12:42:33Z
dc.date.issued2024
dc.identifier.citationBekkevold, D., Knutsen, H., Hemmer-Hansen, J., Sodeland, M., Höjesjö, J., Bleeker, K., Aarestrup, K., Skov, C., & Nielsen, E. E. (2024). Genetic monitoring uncovers long-distance marine feeding coupled with strong spatial segregation in sea trout (Salmo trutta L.) consistent at annual and decadal time scales. ICES Journal of Marine Science, 81(8), 1655–1668.en_US
dc.identifier.issn1095-9289
dc.identifier.urihttps://hdl.handle.net/11250/3167695
dc.description.abstractGenetic data have greatly increased means to understand fish marine migration behaviours at large spatial scale within a quantitative framework. The anadromous sea trout is a prized target of recreational fishery and an important ecosystem component in freshwater and marine coastal habitats in large parts of temperate northern Europe. Nonetheless, little is known about population distributions while feeding at sea. To reconcile notions about feeding migrations being predominantly locally restricted or not, we used SNP data for 3465 trout representing >100 rivers to identify population origins of 903 coastally feeding fish captured throughout the North Sea-Baltic Sea transition area. Across areas, coastal collections generally showed marked stock-mixing and overall 70:30% native:non-native fish with seasonal variation corresponding with spawning run timing. Data revealed strong spatial feeding segregation between trout from the Scandinavian Peninsula and the European continent. This is surprising given the short distances between areas, but is in alignment with strong genetic differentiation between populations in these areas. Estimation of stock complexity of coastal feeding aggregations showed no spatial trend through the North Sea-Baltic Sea transition area otherwise characterized by strong environmental clines. Analyses of scale samples collected in the 1950s indicate that stock-mixing was consistent over almost 70 years.en_US
dc.language.isoengen_US
dc.publisherOxford University Pressen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectPopulation structureen_US
dc.subjectNorth Sea-Baltic Sea transition zoneen_US
dc.subjectBrown trouten_US
dc.subjectGenetic stock identificationen_US
dc.subjectMigrationen_US
dc.subjectRecreational anglingen_US
dc.subjectHistorical DNAen_US
dc.titleGenetic monitoring uncovers long-distance marine feeding coupled with strong spatial segregation in sea trout (Salmo trutta L.) consistent at annual and decadal time scalesen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2024 The Author(s)en_US
dc.subject.nsiVDP::Mathematics and natural science: 400::Zoology and botany: 480::Marine biology: 497en_US
dc.source.pagenumber1655-1668en_US
dc.source.volume81en_US
dc.source.journalICES Journal of Marine Scienceen_US
dc.source.issue8en_US
dc.identifier.doihttps://doi.org/10.1093/icesjms/fsae114
dc.identifier.cristin2324292
cristin.qualitycode2


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