Circumpolar Genetic Structure and Recent Gene Flow of Polar Bears: A Reanalysis.

ABSTRACT: Recently, an extensive study of 2,748 polar bears (Ursus maritimus) from across their circumpolar range was published in PLOS ONE, which used microsatellites and mitochondrial haplotypes to apparently show altered population structure and a dramatic change in directional gene flow towards the Canadian Archipelago-an area believed to be a future refugium for polar bears as their southernmost habitats decline under climate change. Although this study represents a major international collaborative effort and promised to be a baseline for future genetics work, methodological shortcomings and errors of interpretation undermine some of the study's main conclusions. Here, we present a reanalysis of this data in which we address some of these issues, including: (1) highly unbalanced sample sizes a

SUBMITTER: Malenfant RM 

PROVIDER: S-EPMC4790856 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature