Range-wide whole-genome resequencing of the brown bear reveals drivers of intraspecies divergence.

ABSTRACT: Population-genomic studies can shed new light on the effect of past demographic processes on contemporary population structure. We reassessed phylogeographical patterns of a classic model species of postglacial recolonisation, the brown bear (Ursus arctos), using a range-wide resequencing dataset of 128 nuclear genomes. In sharp contrast to the erratic geographical distribution of mtDNA and Y-chromosomal haplotypes, autosomal and X-chromosomal multi-locus datasets indicate that brown bear population structure is largely explained by recent population connectivity. Multispecies coalescent based analyses reveal cases where mtDNA haplotype sharing between distant populations, such as between Iberian and southern Scandinavian bears, likely results from incomplete lineage sorting, not from ance

SUBMITTER: de Jong MJ 

PROVIDER: S-EPMC9902616 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature