Data from: Spatial and temporal genetic structure of a river-resident Atlantic salmon (Salmo salar) after millennia of isolation ...

• Main Authors: Sandlund, Odd Terje, Karlsson, Sten, Thorstad, Eva B., Berg, Ole Kristian, Kent, Matthew P., Norum, Ine C. J., Hindar, Kjetil
• Format: Dataset
• Language: English
• Published: Dryad 2015
• Subjects: Norway; Atlantic salmon; Salmo salar
• Online Access: https://dx.doi.org/10.5061/dryad.jk42p; https://datadryad.org/stash/dataset/doi:10.5061/dryad.jk42p

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 ... : Salmo_salar_for_DRYADMicrosatellite genotype data for 312 specimens of Atlantic salmon at eight microsatellite loci ...