Genotype distributions of cod from the Norwegian Skagerrak coast
The genotype distributions for cod, Gadus morhua L., from the southeastern coast of Norway are studied as part of a more extensive study on cod enhancement and the possible effects of mass liberation of 0-group cod on endemic cod populations. This paper focuses on possible geographical variation in...
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Universitetet i Bergen
1992
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Online Access: | http://hdl.handle.net/11250/108458 |
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ftimr:oai:imr.brage.unit.no:11250/108458 2023-05-15T16:19:06+02:00 Genotype distributions of cod from the Norwegian Skagerrak coast Gjøsæter, Jakob Jørstad, Knut Eirik Nævdal, Gunnar Thorkildsen, Solveig 1992-02-20 application/pdf http://hdl.handle.net/11250/108458 eng eng Universitetet i Bergen Sarsia 76(4), 1992: 255-259 urn:issn:0036-4827 http://hdl.handle.net/11250/108458 VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Journal article Peer reviewed 1992 ftimr 2021-09-23T20:14:38Z The genotype distributions for cod, Gadus morhua L., from the southeastern coast of Norway are studied as part of a more extensive study on cod enhancement and the possible effects of mass liberation of 0-group cod on endemic cod populations. This paper focuses on possible geographical variation in allele frequencies, temporal variations in haemoglobin type frequencies and mean length of age of various genotypes. Twelve samples were analysed for genotype distribution of haemoglobins and the tissue enzymes LDH, PGI, IDH, PGM, and GPD by agar-gel and starch gel electrophoresis. Some intersample variations were found indicating heterogeneity of the total cod stock structure in the area. The haemoglobin-controlling genes occurred with similar frequencies in this material as in corresponding material analysed more than 25 years earlier. Possible associations between life history traits and individual genotypes were investigated, and genotype-dependent growth rate was indicated. Article in Journal/Newspaper Gadus morhua Institute for Marine Research: Brage IMR Norway |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
topic |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
spellingShingle |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 Gjøsæter, Jakob Jørstad, Knut Eirik Nævdal, Gunnar Thorkildsen, Solveig Genotype distributions of cod from the Norwegian Skagerrak coast |
topic_facet |
VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fish health: 923 |
description |
The genotype distributions for cod, Gadus morhua L., from the southeastern coast of Norway are studied as part of a more extensive study on cod enhancement and the possible effects of mass liberation of 0-group cod on endemic cod populations. This paper focuses on possible geographical variation in allele frequencies, temporal variations in haemoglobin type frequencies and mean length of age of various genotypes. Twelve samples were analysed for genotype distribution of haemoglobins and the tissue enzymes LDH, PGI, IDH, PGM, and GPD by agar-gel and starch gel electrophoresis. Some intersample variations were found indicating heterogeneity of the total cod stock structure in the area. The haemoglobin-controlling genes occurred with similar frequencies in this material as in corresponding material analysed more than 25 years earlier. Possible associations between life history traits and individual genotypes were investigated, and genotype-dependent growth rate was indicated. |
format |
Article in Journal/Newspaper |
author |
Gjøsæter, Jakob Jørstad, Knut Eirik Nævdal, Gunnar Thorkildsen, Solveig |
author_facet |
Gjøsæter, Jakob Jørstad, Knut Eirik Nævdal, Gunnar Thorkildsen, Solveig |
author_sort |
Gjøsæter, Jakob |
title |
Genotype distributions of cod from the Norwegian Skagerrak coast |
title_short |
Genotype distributions of cod from the Norwegian Skagerrak coast |
title_full |
Genotype distributions of cod from the Norwegian Skagerrak coast |
title_fullStr |
Genotype distributions of cod from the Norwegian Skagerrak coast |
title_full_unstemmed |
Genotype distributions of cod from the Norwegian Skagerrak coast |
title_sort |
genotype distributions of cod from the norwegian skagerrak coast |
publisher |
Universitetet i Bergen |
publishDate |
1992 |
url |
http://hdl.handle.net/11250/108458 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_relation |
Sarsia 76(4), 1992: 255-259 urn:issn:0036-4827 http://hdl.handle.net/11250/108458 |
_version_ |
1766005420780945408 |