Genetic characterisation of giant Sebastes in the deep water slopes in the Irminger Sea

In 1996 a new fishery along the Reykjanes Ridge below 500 m was initiated. A Sebastes species similar in morphology to S. marinus and with average length above 60 cm (called giants) was one of the main targets. In three seasons; spring, summer and fall, in the period of 1995–1997, 560 tissue and blo...

Full description

Saved in:
Bibliographic Details
Published in:Fisheries research 2000-04, Vol.45 (3), p.207-216
Main Authors: Johansen, T., Nævdal, G., Daniélsdóttir, A.K., Hareide, N.R.
Format: Article
Language:English
Subjects:
Allozymes
Animals
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Genetics of eukaryotes. Biological and molecular evolution
Haemoglobin
Population genetics
Population genetics, reproduction patterns
Redfish
Reykjanes ridge
Sebastes spp
Species identification
Vertebrata
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In 1996 a new fishery along the Reykjanes Ridge below 500 m was initiated. A Sebastes species similar in morphology to S. marinus and with average length above 60 cm (called giants) was one of the main targets. In three seasons; spring, summer and fall, in the period of 1995–1997, 560 tissue and blood samples were collected and in addition some whole redfish for morphometric studies were taken. The genetic relationship of this type of redfish to related Sebastes species was studied by starch and polyacrylamid gel electrophoresis of haemoglobin and allozymes. The results are compared to earlier studies on redfish from Greenland and Icelandic waters. Although morphologically similar to S. marinus, these giant redfish displayed haemoglobin patterns diagnostically different from the ones usually seen in S. marinus and S. mentella. Low level of IDHP-1* variation in liver tissue was found, in contrast to the ordinary S. marinus. On the other hand monomorphic MEP indicated relationship to S. marinus.
ISSN:0165-7836
1872-6763
DOI:10.1016/S0165-7836(99)00132-0