Landscape heterogeneity and local adaptation define the spatial genetic structure of Pacific salmon in a pristine environment

摘要: Identifying the spatial distribution of genetic variation across landscape is an essential step in informing species conservation. Comparison closely related and geographically overlapping can be particularly useful cases where may similarly influence structure. Congruent patterns among highlight importance that heterogeneity plays determining structure whereas contrasting emphasize differences species-specific ecology life-history or adaptation to local environments. We examined interacting roles demography two a pristine environment. Using single nucleotide polymorphism (SNP) loci exhibiting both neutral putative adaptive variation, we evaluated sockeye salmon Copper River, Alaska; these data were compared existing for Chinook from same region. Overall, exhibited isolation by distance; populations largely determined landscape. Further, congruent within- among-population diversity, highlighting role historical processes play Potential proximate observed when high FST outlier SNPs genetics context. Results context conservation efforts with emphasis on reproductive isolation, processes, adaptation.