Allozymic and scnDNA homogeneity in polar cod (Boreogadus saida) (Gadiformes: Gadidae) ...

• Main Authors: Fevolden, Svein Erik, Christiansen, Jørgen S.
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: Société Française d'Ichtyologie 1997
• Subjects: Allozymes, Arctic Ocean, Boreogadus saida, Gadidae, PN, Population structure, scnDNA; Arctic; Arctic Ocean; Svalbard; Boreogadus saida; Denmark Strait; Pechora; Pechora Sea; polar cod
• Online Access: https://dx.doi.org/10.26028/cybium/1997-214-008; https://sfi-cybium.fr/fr/allozymic-and-scndna-homogeneity-polar-cod-boreogadus-saida-gadiformes-gadidae

Polar cod in the Arctic Ocean exhibits variation over its distributional area in both morphometry, coloration and behaviour. The genetic basis to this variation is not known. Thus, a population genetic survey of polar cod was initiated. Specimens were sampled from the Pechora Sea, off Svalbard and in the Denmark Strait and examined for variation at selected enzyme coding loci plus at a scnDNA locus. None of the assays revealed a genetic structuring among the three geographic regions. Moreover, the predominant nonpolymorphic allozyme loci indicated that the genetic variation in polar cod is in general low, which may be in accordance with other species of fish in arctic regions. ...