Data from: Post-glacial recolonization of the North American Arctic by Arctic char (Salvelinus alpinus): genetic evidence of multiple northern refugia and hybridization between glacial lineages ...

• Main Authors: Moore, Jean-Sébastien, Bajno, Robert, Reist, James D., Taylor, Eric B.
• Format: Dataset
• Language: unknown
• Published: The University of British Columbia 2020
• Subjects: Archipelago; Arctic Archipelago; Arctic; Salvelinus alpinus; Alaska; Beringia
• Online Access: https://dx.doi.org/10.14288/1.0397930; https://doi.library.ubc.ca/10.14288/1.0397930

Abstract Aims: We investigated post-glacial recolonization of the North American Arctic by Arctic char (Salvelinus alpinus) and examined potential hybridization between different glacial lineages upon secondary contact. Location: North American Arctic and adjacent areas. Methods: We collected mtDNA sequence data from 1355 individuals from 110 sampling locations and data from nine microsatellite loci from 931 individuals from 37 locations. We assessed the phylogenetic relationships and geographical distribution of mtDNA haplotypes and conducted historical demographic analyses. We used a Bayesian clustering analysis method to detect potential hybridization between glacial lineages. Results: Two highly divergent mtDNA lineages were identified in the Arctic region with distinct but overlapping geographic distributions: one in Beringia and the other over the entire Arctic Archipelago and coastal mainland east of Alaska. The microsatellite data also implied the existence of these two lineages. Evidence of ...