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ICES Journal of Marine Science: Journal du Conseil 1994 51(4):461-467; doi:10.1006/jmsc.1994.1047
© 1994 by ICES/CIEM International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer
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Genetic studies of redfish (Sebastes spp.) from Icelandic and Greenland waters

Kjell Nedreaas, Torild Johansen and Gunnar Nævdal

Institute of Marine Research PO Box 1870, Nordnes, N-5024 Bergen, Norway
Department of Fisheries and Marine Biology, University of Bergen, Bergen High Technology Center N-5020 Bergen, Norway

Sebastes spp. from Icelandic and Greenland waters were analysed for biochemical genetic variation by agar gel (haemoglobins) and starch gel electrophoresis (tissue enzymes). The main emphasis was laid on S. marinus, which was sampled on the south-west and south-east coast of Iceland, north of Iceland, and from both sides of Cape Farewell. S. mentella from coastal West Greenland waters and from the Davis Strait and oceanic S. mentella from the Irminger Sea were also analysed, together with S. viviparus from five localities south of Iceland. S. mentella showed no polymorphism in any of the enzymes, and displayed an overall picture identical to that found in this species in other areas. IDHP genotypes of S. marinus from Icelandic waters showed a similar distribution to that found around the Farae Islands and the coast of Norway, while the Greenland samples differed significantly. Intersample differences were also indicated in S. viviparus. The pattern of MDH was diagnostic for S. viviparus. The haemoglobin patterns were monomorphic in all three species off Iceland, and, as found before, clearly diagnostic for S. mentella, while considerable variation was noted in the material of S. marinus from Greenland.

Keywords: Sebastes, polymorphism, haemoglobin pattern

Received 20 October 1993; accepted 7 June 1994.


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