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- Title
Population genetic analysis of Euro-Arctic polar cod Boreogadus saida suggests fjord and oceanic structuring.
- Authors
Madsen, Matias; Nelson, R.; Fevolden, Svein-Erik; Christiansen, Jørgen; Præbel, Kim
- Abstract
Polar cod, Boreogadus saida, is a key species in Arctic marine ecosystems; however, its genetic population structure is largely undescribed. The population genetic structure of 472 B. saida specimens among nine locations in the north-east Atlantic was revealed using 12 microsatellite loci. Pairwise F comparisons showed significant population differentiation between B. saida sampled inside fjords in Svalbard and north-east Greenland, as compared to B. saida from the shelf. The observed genetic variation was not a function of isolation by distance, and it is speculated that B. saida populations inhabiting fjords may have become reproductively isolated from shelf-dwelling B. saida during the last post-glacial recolonization.
- Subjects
ARCTOGADUS glacialis; FISH genetics; RECOLONIZATION of fishes; POPULATION genetics; BOREOGADUS saida; FISH ecology
- Publication
Polar Biology, 2016, Vol 39, Issue 6, p969
- ISSN
0722-4060
- Publication type
Article
- DOI
10.1007/s00300-015-1812-y