A large wild salmon stock shows genetic and life history differentiation within, but not between, rivers

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dc.contributor.author Miettinen, Antti
dc.contributor.author Palm, Stefan
dc.contributor.author Dannewitz, Johan
dc.contributor.author Lind, Emma
dc.contributor.author Primmer, Craig R.
dc.contributor.author Romakkaniemi, Atso
dc.contributor.author Ostergren, Johan
dc.contributor.author Pritchard, Victoria L.
dc.date.accessioned 2021-07-08T12:35:01Z
dc.date.available 2021-07-08T12:35:01Z
dc.date.issued 2021-02
dc.identifier.citation Miettinen , A , Palm , S , Dannewitz , J , Lind , E , Primmer , C R , Romakkaniemi , A , Ostergren , J & Pritchard , V L 2021 , ' A large wild salmon stock shows genetic and life history differentiation within, but not between, rivers ' , Conservation Genetics , vol. 22 , pp. 35–51 . https://doi.org/10.1007/s10592-020-01317-y
dc.identifier.other PURE: 156744695
dc.identifier.other PURE UUID: f0d4270e-c549-4010-8f53-3097445d1e0c
dc.identifier.other WOS: 000589994900001
dc.identifier.other ORCID: /0000-0001-6002-2891/work/96738071
dc.identifier.other ORCID: /0000-0002-3687-8435/work/96738299
dc.identifier.uri http://hdl.handle.net/10138/332296
dc.description.abstract Anadromous salmonid fishes frequently exhibit strong geographic population structuring. However, population genetic differentiation of Atlantic salmon (Salmo salar) at fine geographic scales differs across equivalent spatial extents in different regions. So far, fine-scale genetic differentiation has not been assessed in rivers of the Baltic Sea, a region that contains an evolutionarily distinct Atlantic salmon lineage. Thus, Baltic salmon are currently managed on the river level, without focus on potential genetic structure and diversity within rivers. Here, we used microsatellites to characterize the genetic structure of wild juvenile salmon sampled throughout the interconnected, northern Baltic Tornio and Kalix Rivers. We found genetic differentiation within the two rivers, but not between them: salmon in the upper reaches differed from individuals in the lower reaches, regardless of river system. Further, examining smolts migrating from the river to the sea and adults returning from the sea to spawn, we found an association between the genetic structure and seasonal migration timing. Out-migrating smolts genetically assigned to upper river reaches were older and tended to reach the sea later in the season than smolts from the lower reaches. In contrast, mature adults originating from the upper reaches returned to the river early in the season. Our observation of genetic population structuring between downstream and upstream reaches of the large Tornio and Kalix rivers, and its association with migration timing, implies that careful temporal management of the northern Baltic fisheries would help to preserve the diversity and sustainability of the wild salmon stocks of these rivers. en
dc.format.extent 17
dc.language.iso eng
dc.relation.ispartof Conservation Genetics
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Atlantic salmon
dc.subject Baltic Sea
dc.subject Isolation by distance
dc.subject Mixed stock analysis
dc.subject Population genetics
dc.subject Run timing
dc.subject 1181 Ecology, evolutionary biology
dc.title A large wild salmon stock shows genetic and life history differentiation within, but not between, rivers en
dc.type Article
dc.contributor.organization Evolution, Conservation, and Genomics
dc.contributor.organization Organismal and Evolutionary Biology Research Programme
dc.contributor.organization Biosciences
dc.contributor.organization Helsinki Institute of Sustainability Science (HELSUS)
dc.contributor.organization Institute of Biotechnology
dc.contributor.organization Faculty of Biological and Environmental Sciences
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.1007/s10592-020-01317-y
dc.relation.issn 1566-0621
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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