Genetic studies of redfish (Sebastes spp.) along the continental slopes from Norway to East Greenland

• Published in: ICES Journal of Marine Science
• Main Authors: Nedreaas, Kjell, Nævdal, Gunnar
• Format: Text
• Language: English
• Published: Oxford University Press 1991
• Subjects: Articles; Svalbard; Barents Sea; Greenland; Norway; Irminger Sea; East Greenland; Northeast Atlantic; Sebastes mentella
• Online Access: http://icesjms.oxfordjournals.org/cgi/content/short/48/2/173; https://doi.org/10.1093/icesjms/48.2.173

In this study, three redfish species, Sebastes marinus, Sebastes mentella , and Sebastes niviparus , are investigated for inter- and intraspecies differences by the use of electrophoresis of haemoglobin and enzymes in white muscle, liver, and eye tissues. This study is a continuation of the work by Nedreaas and Nævdal (1989) on the analysis of protein polymorphism in redfish from Norwegian waters, the Barents Sea, and Svalbard. For the present study, specimens have been collected from the British Sector north of Shetland, putside the Faeroe Islands, from the Irminger Sea, and from East Greenland. The genetic species diagnostic criteria, which were also clear and unequivocal in this enlarged investigation of the Sebastes genus in the Northeast Atlantic, confirmed the less clear morphoogical, morphometric, and meristic criteria used to separate the species. The study urther revealed certain underlying genetic differences within species between areas that will help our understanding of the biological structure of redfish stocks in the Northeast Atlantic.