Incorporating deep and shallow components of genetic structure into the management of Alaskan red king crab.

ABSTRACT: Observed patterns of genetic variability among marine populations are shaped not only by contemporary levels of gene flow, but also by divergences during historical isolations. We examined variability at 15 SNP loci and in mtDNA sequences (COI, 665 bp) in red king crab from 17 localities in the North Pacific. These markers define three geographically distinct evolutionary lineages (SNPs, F(CT) = 0.054; mtDNA Φ(CT) = 0.222): (i) Okhotsk Sea-Norton Sound-Aleutian Islands, (ii) southeastern Bering Sea-western Gulf of Alaska, and (iii) Southeast Alaska. Populations in the Bering Sea and in Southeast Alaska are genetically heterogeneous, but populations in the center of the range are homogeneous. Mitochondrial DNA diversity drops from h = 0.91 in the northwestern Pacific to h = 0.24 in the Sout

SUBMITTER: Grant WS 

PROVIDER: S-EPMC3552400 | biostudies-literature | 2012 Dec

REPOSITORIES: biostudies-literature