Genomic signatures of population bottleneck and recovery in Northwest Atlantic pinnipeds.

ABSTRACT: Population increases over the past several decades provide natural settings in which to study the evolutionary processes that occur during bottleneck, growth, and spatial expansion. We used parallel natural experiments of historical decline and subsequent recovery in two sympatric pinniped species in the Northwest Atlantic, the gray seal (Halichoerus grypus atlantica) and harbor seal (Phoca vitulina vitulina), to study the impact of recent demographic change in genomic diversity. Using restriction site-associated DNA sequencing, we assessed genomic diversity at over 8,700 polymorphic gray seal loci and 3,700 polymorphic harbor seal loci in samples from multiple cohorts collected throughout recovery over the past half-century. Despite significant differences in the degree of g

SUBMITTER: Cammen KM 

PROVIDER: S-EPMC6053562 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature