Comparative Survival and Growth of Two Strains of Atlantic Cod ( Gadus morhua ) through the Early Life Stages in a Marine Pond
Survival and growth of two strains of Atlantic cod (Gadus morhua) were compared through the larval and juvenile stages in a marine pond in western Norway in 1990 and 1991. Strain A was homozygous for the genetic marker allele GPI-1*30 at the glucose phosphate isomerase (GPI) locus expressed in white...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Canadian Science Publishing
1994
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Online Access: | http://dx.doi.org/10.1139/f94-101 http://www.nrcresearchpress.com/doi/pdf/10.1139/f94-101 |
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crcansciencepubl:10.1139/f94-101 2024-04-07T07:50:53+00:00 Comparative Survival and Growth of Two Strains of Atlantic Cod ( Gadus morhua ) through the Early Life Stages in a Marine Pond Blom, Geir Svåsand, Terje Jørstad, Knut E. Otterå, Håkon Paulsen, Ole I. Holm, Jens C. 1994 http://dx.doi.org/10.1139/f94-101 http://www.nrcresearchpress.com/doi/pdf/10.1139/f94-101 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 51, issue 5, page 1012-1023 ISSN 0706-652X 1205-7533 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 1994 crcansciencepubl https://doi.org/10.1139/f94-101 2024-03-08T00:37:45Z Survival and growth of two strains of Atlantic cod (Gadus morhua) were compared through the larval and juvenile stages in a marine pond in western Norway in 1990 and 1991. Strain A was homozygous for the genetic marker allele GPI-1*30 at the glucose phosphate isomerase (GPI) locus expressed in white muscle, and Strain B possessed other GPI-1* genotypes, in 1990 the frequency of Strain B increased significantly from the larval to the juvenile stage; however, in 1991 the frequency of Strain A increased slightly but not significantly from the larval to the juvenile phase. Larval mortality did not differ significantly between strains any year, but juvenile mortality was significantly lower in Strain B in 1990 and Strain A in 1991. Average growth rates in length estimated from regressions were not significantly different between strains during the larval and juvenile period any year, but initial length was significantly larger in Strain B in 1990 and Strain A in 1991. Our results indicated that food limitation during the early juvenile stage induced differential size-selective mortality among the strains due to small differences in body size and actual age between strains. Body size did not become important for survival until the food-limited regime had occurred. Article in Journal/Newspaper atlantic cod Gadus morhua Canadian Science Publishing Norway Canadian Journal of Fisheries and Aquatic Sciences 51 5 1012 1023 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Blom, Geir Svåsand, Terje Jørstad, Knut E. Otterå, Håkon Paulsen, Ole I. Holm, Jens C. Comparative Survival and Growth of Two Strains of Atlantic Cod ( Gadus morhua ) through the Early Life Stages in a Marine Pond |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
Survival and growth of two strains of Atlantic cod (Gadus morhua) were compared through the larval and juvenile stages in a marine pond in western Norway in 1990 and 1991. Strain A was homozygous for the genetic marker allele GPI-1*30 at the glucose phosphate isomerase (GPI) locus expressed in white muscle, and Strain B possessed other GPI-1* genotypes, in 1990 the frequency of Strain B increased significantly from the larval to the juvenile stage; however, in 1991 the frequency of Strain A increased slightly but not significantly from the larval to the juvenile phase. Larval mortality did not differ significantly between strains any year, but juvenile mortality was significantly lower in Strain B in 1990 and Strain A in 1991. Average growth rates in length estimated from regressions were not significantly different between strains during the larval and juvenile period any year, but initial length was significantly larger in Strain B in 1990 and Strain A in 1991. Our results indicated that food limitation during the early juvenile stage induced differential size-selective mortality among the strains due to small differences in body size and actual age between strains. Body size did not become important for survival until the food-limited regime had occurred. |
format |
Article in Journal/Newspaper |
author |
Blom, Geir Svåsand, Terje Jørstad, Knut E. Otterå, Håkon Paulsen, Ole I. Holm, Jens C. |
author_facet |
Blom, Geir Svåsand, Terje Jørstad, Knut E. Otterå, Håkon Paulsen, Ole I. Holm, Jens C. |
author_sort |
Blom, Geir |
title |
Comparative Survival and Growth of Two Strains of Atlantic Cod ( Gadus morhua ) through the Early Life Stages in a Marine Pond |
title_short |
Comparative Survival and Growth of Two Strains of Atlantic Cod ( Gadus morhua ) through the Early Life Stages in a Marine Pond |
title_full |
Comparative Survival and Growth of Two Strains of Atlantic Cod ( Gadus morhua ) through the Early Life Stages in a Marine Pond |
title_fullStr |
Comparative Survival and Growth of Two Strains of Atlantic Cod ( Gadus morhua ) through the Early Life Stages in a Marine Pond |
title_full_unstemmed |
Comparative Survival and Growth of Two Strains of Atlantic Cod ( Gadus morhua ) through the Early Life Stages in a Marine Pond |
title_sort |
comparative survival and growth of two strains of atlantic cod ( gadus morhua ) through the early life stages in a marine pond |
publisher |
Canadian Science Publishing |
publishDate |
1994 |
url |
http://dx.doi.org/10.1139/f94-101 http://www.nrcresearchpress.com/doi/pdf/10.1139/f94-101 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 51, issue 5, page 1012-1023 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f94-101 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
51 |
container_issue |
5 |
container_start_page |
1012 |
op_container_end_page |
1023 |
_version_ |
1795665682364366848 |