Polar Biology

, Volume 39, Issue 6, pp 969–980 | Cite as

Population genetic analysis of Euro-Arctic polar cod Boreogadus saida suggests fjord and oceanic structuring

  • Matias L. MadsenEmail author
  • R. John Nelson
  • Svein-Erik Fevolden
  • Jørgen S. Christiansen
  • Kim Præbel
Original Paper


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 ST 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.


Gadidae Genetic differentiation Marine barriers Spatial population structure Microsatellite markers Polar cod 



This study forms part of the TUNU Programme, UiT The Arctic University of Norway. The analysed material was collected during the TUNU-Expeditions (Christiansen 2012). The authors would like to thank the crew of RV “Jan Mayen” for their help at sea and Tanja L. Hanebrekke for valuable assistance in the laboratory. We appreciate the constructive comments of three anonymous referees on the submitted manuscript.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  • Matias L. Madsen
    • 1
    Email author
  • R. John Nelson
    • 2
  • Svein-Erik Fevolden
    • 1
  • Jørgen S. Christiansen
    • 1
  • Kim Præbel
    • 1
  1. 1.Faculty of Biosciences, Fisheries and EconomicsUiT The Arctic University of NorwayTromsøNorway
  2. 2.Department of BiologyUniversity of VictoriaVictoriaCanada

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