Northern European Salmo trutta (L.) populations are genetically divergent across geographical regions and environmental gradients.

ABSTRACT: The salmonid fish Brown trout is iconic as a model for the application of conservation genetics to understand and manage local interspecific variation. However, there is still scant information about relationships between local and large-scale population structure, and to what extent geographical and environmental variables are associated with barriers to gene flow. We used information from 3,782 mapped SNPs developed for the present study and conducted outlier tests and gene-environment association (GEA) analyses in order to examine drivers of population structure. Analyses comprised >2,600 fish from 72 riverine populations spanning a central part of the species' distribution in northern Europe. We report hitherto unidentified genetic breaks in population structure, indicating strong barr

SUBMITTER: Bekkevold D 

PROVIDER: S-EPMC6976966 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature