Data from: Spatial and temporal genetic structure of a river-resident Atlantic salmon (Salmo salar) after millennia of isolation
The river-resident Salmo salar (“småblank”) has been isolated from other Atlantic salmon populations for 9,500 years in upper River Namsen, Norway. This is the only European Atlantic salmon population accomplishing its entire life cycle in a river. Hydropower development during the last six decades...
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Online Access: | https://doi.org/10.5061/dryad.jk42p |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::d647ea7d19fc1031b79a866de26c07a9 2023-05-15T15:28:22+02:00 Data from: Spatial and temporal genetic structure of a river-resident Atlantic salmon (Salmo salar) after millennia of isolation Sandlund, Odd Terje Karlsson, Sten Thorstad, Eva B. Berg, Ole Kristian Kent, Matthew P. Norum, Ine C. J. Hindar, Kjetil 2019-07-15 https://doi.org/10.5061/dryad.jk42p en eng Dryad http://dx.doi.org/10.5061/dryad.jk42p https://dx.doi.org/10.5061/dryad.jk42p lic_creative-commons 10.5061/dryad.jk42p oai:easy.dans.knaw.nl:easy-dataset:85360 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:85360 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 Life sciences medicine and health care anthro-se envir Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2019 fttriple https://doi.org/10.5061/dryad.jk42p 2023-01-22T16:51:02Z The river-resident Salmo salar (“småblank”) has been isolated from other Atlantic salmon populations for 9,500 years in upper River Namsen, Norway. This is the only European Atlantic salmon population accomplishing its entire life cycle in a river. Hydropower development during the last six decades has introduced movement barriers and changed more than 50% of the river habitat to lentic conditions. Based on microsatellites and SNPs, genetic variation within småblank was only about 50% of that in the anadromous Atlantic salmon within the same river. The genetic differentiation (FST) between småblank and the anadromous population was 0.24. This is similar to the differentiation between anadromous Atlantic salmon in Europe and North America. Microsatellite analyses identified three genetic subpopulations within småblank, each with an effective population size Ne of a few hundred individuals. There was no evidence of reduced heterozygosity and allelic richness in contemporary samples (2005–2008) compared with historical samples (1955–56 and 1978–79). However, there was a reduction in genetic differentiation between sampling localities over time. SNP data supported the differentiation of småblank into subpopulations and revealed downstream asymmetric gene flow between subpopulations. In spite of this, genetic variation was not higher in the lower than in the upper areas. The meta-population structure of småblank probably maintains genetic variation better than one panmictic population would do, as long as gene flow among subpopulations is maintained. Småblank is a unique endemic island population of Atlantic salmon. It is in a precarious situation due to a variety of anthropogenic impacts on its restricted habitat area. Thus, maintaining population size and avoiding further habitat fragmentation are important. Salmo_salar_for_DRYADMicrosatellite genotype data for 312 specimens of Atlantic salmon at eight microsatellite loci Dataset Atlantic salmon Salmo salar Unknown Norway |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Life sciences medicine and health care anthro-se envir |
spellingShingle |
Life sciences medicine and health care anthro-se envir Sandlund, Odd Terje Karlsson, Sten Thorstad, Eva B. Berg, Ole Kristian Kent, Matthew P. Norum, Ine C. J. Hindar, Kjetil Data from: Spatial and temporal genetic structure of a river-resident Atlantic salmon (Salmo salar) after millennia of isolation |
topic_facet |
Life sciences medicine and health care anthro-se envir |
description |
The river-resident Salmo salar (“småblank”) has been isolated from other Atlantic salmon populations for 9,500 years in upper River Namsen, Norway. This is the only European Atlantic salmon population accomplishing its entire life cycle in a river. Hydropower development during the last six decades has introduced movement barriers and changed more than 50% of the river habitat to lentic conditions. Based on microsatellites and SNPs, genetic variation within småblank was only about 50% of that in the anadromous Atlantic salmon within the same river. The genetic differentiation (FST) between småblank and the anadromous population was 0.24. This is similar to the differentiation between anadromous Atlantic salmon in Europe and North America. Microsatellite analyses identified three genetic subpopulations within småblank, each with an effective population size Ne of a few hundred individuals. There was no evidence of reduced heterozygosity and allelic richness in contemporary samples (2005–2008) compared with historical samples (1955–56 and 1978–79). However, there was a reduction in genetic differentiation between sampling localities over time. SNP data supported the differentiation of småblank into subpopulations and revealed downstream asymmetric gene flow between subpopulations. In spite of this, genetic variation was not higher in the lower than in the upper areas. The meta-population structure of småblank probably maintains genetic variation better than one panmictic population would do, as long as gene flow among subpopulations is maintained. Småblank is a unique endemic island population of Atlantic salmon. It is in a precarious situation due to a variety of anthropogenic impacts on its restricted habitat area. Thus, maintaining population size and avoiding further habitat fragmentation are important. Salmo_salar_for_DRYADMicrosatellite genotype data for 312 specimens of Atlantic salmon at eight microsatellite loci |
format |
Dataset |
author |
Sandlund, Odd Terje Karlsson, Sten Thorstad, Eva B. Berg, Ole Kristian Kent, Matthew P. Norum, Ine C. J. Hindar, Kjetil |
author_facet |
Sandlund, Odd Terje Karlsson, Sten Thorstad, Eva B. Berg, Ole Kristian Kent, Matthew P. Norum, Ine C. J. Hindar, Kjetil |
author_sort |
Sandlund, Odd Terje |
title |
Data from: Spatial and temporal genetic structure of a river-resident Atlantic salmon (Salmo salar) after millennia of isolation |
title_short |
Data from: Spatial and temporal genetic structure of a river-resident Atlantic salmon (Salmo salar) after millennia of isolation |
title_full |
Data from: Spatial and temporal genetic structure of a river-resident Atlantic salmon (Salmo salar) after millennia of isolation |
title_fullStr |
Data from: Spatial and temporal genetic structure of a river-resident Atlantic salmon (Salmo salar) after millennia of isolation |
title_full_unstemmed |
Data from: Spatial and temporal genetic structure of a river-resident Atlantic salmon (Salmo salar) after millennia of isolation |
title_sort |
data from: spatial and temporal genetic structure of a river-resident atlantic salmon (salmo salar) after millennia of isolation |
publisher |
Dryad |
publishDate |
2019 |
url |
https://doi.org/10.5061/dryad.jk42p |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
10.5061/dryad.jk42p oai:easy.dans.knaw.nl:easy-dataset:85360 oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:85360 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 10|opendoar____::8b6dd7db9af49e67306feb59a8bdc52c re3data_____::r3d100000044 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::081b82f96300b6a6e3d282bad31cb6e2 |
op_relation |
http://dx.doi.org/10.5061/dryad.jk42p https://dx.doi.org/10.5061/dryad.jk42p |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.jk42p |
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1766358741057273856 |