Gender differences in health and aging of Atlantic cod subject to size selective fishery
We have analyzed health and physiological aging parameters in male and female Atlantic cod, Gadus morhua, captured in Kattegat, Skagerrak and in O¨ resund. Gender differences were clearly evident in a number of variables. Males had longer liver telomeres and higher catalase activities than females,...
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Online Access: | https://pub.epsilon.slu.se/10512/ https://pub.epsilon.slu.se/10512/2/Almroth_etal_130617.pdf https://doi.org/10.1242/bio.20121446 |
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ftslunivuppsala:oai:pub.epsilon.slu.se:10512 2023-05-15T15:27:12+02:00 Gender differences in health and aging of Atlantic cod subject to size selective fishery Carney Almroth, Bethanie Sköld, Mattias Nilsson Sköld, Helen 2012 application/pdf https://pub.epsilon.slu.se/10512/ https://pub.epsilon.slu.se/10512/2/Almroth_etal_130617.pdf https://doi.org/10.1242/bio.20121446 en eng eng https://pub.epsilon.slu.se/10512/2/Almroth_etal_130617.pdf Carney Almroth, Bethanie and Sköld, Mattias and Nilsson Sköld, Helen (2012). Gender differences in health and aging of Atlantic cod subject to size selective fishery. Biology open. 1 , 922-928 [Research article] Ecology Research article PeerReviewed info:eu-repo/semantics/article 2012 ftslunivuppsala https://doi.org/10.1242/bio.20121446 2022-01-09T19:12:52Z We have analyzed health and physiological aging parameters in male and female Atlantic cod, Gadus morhua, captured in Kattegat, Skagerrak and in O¨ resund. Gender differences were clearly evident in a number of variables. Males had longer liver telomeres and higher catalase activities than females, while females had higher superoxide dismutase activity, liver somatic index and condition factor. Effects of age were found for males where levels of the antioxidant glutathione and telomere length declined with age, indicating physiological aging. Liver somatic index increased and percentage oxidized glutathione decreased with age. Between-site comparisons of males show that percentage oxidized glutathione and catalase were lowest in Kattegat, whereas protein carbonyls and condition factor were higher in Skagerrak. Females, on the other hand, showed no differences between sites or indications of somatic aging or age-related effects in egg quality, indicating that older and larger female cod are healthy and show no changes in eggs with age. In contrast, males showed indications of physiological aging and lower condition than females. The results emphasize the importance of conserving old mature fish, in particular high egg-productive females, when managing fisheries. Article in Journal/Newspaper atlantic cod Gadus morhua Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive Kattegat ENVELOPE(9.692,9.692,63.563,63.563) Biology Open 1 9 922 928 |
institution |
Open Polar |
collection |
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive |
op_collection_id |
ftslunivuppsala |
language |
English |
topic |
Ecology |
spellingShingle |
Ecology Carney Almroth, Bethanie Sköld, Mattias Nilsson Sköld, Helen Gender differences in health and aging of Atlantic cod subject to size selective fishery |
topic_facet |
Ecology |
description |
We have analyzed health and physiological aging parameters in male and female Atlantic cod, Gadus morhua, captured in Kattegat, Skagerrak and in O¨ resund. Gender differences were clearly evident in a number of variables. Males had longer liver telomeres and higher catalase activities than females, while females had higher superoxide dismutase activity, liver somatic index and condition factor. Effects of age were found for males where levels of the antioxidant glutathione and telomere length declined with age, indicating physiological aging. Liver somatic index increased and percentage oxidized glutathione decreased with age. Between-site comparisons of males show that percentage oxidized glutathione and catalase were lowest in Kattegat, whereas protein carbonyls and condition factor were higher in Skagerrak. Females, on the other hand, showed no differences between sites or indications of somatic aging or age-related effects in egg quality, indicating that older and larger female cod are healthy and show no changes in eggs with age. In contrast, males showed indications of physiological aging and lower condition than females. The results emphasize the importance of conserving old mature fish, in particular high egg-productive females, when managing fisheries. |
format |
Article in Journal/Newspaper |
author |
Carney Almroth, Bethanie Sköld, Mattias Nilsson Sköld, Helen |
author_facet |
Carney Almroth, Bethanie Sköld, Mattias Nilsson Sköld, Helen |
author_sort |
Carney Almroth, Bethanie |
title |
Gender differences in health and aging of Atlantic cod subject to size selective fishery |
title_short |
Gender differences in health and aging of Atlantic cod subject to size selective fishery |
title_full |
Gender differences in health and aging of Atlantic cod subject to size selective fishery |
title_fullStr |
Gender differences in health and aging of Atlantic cod subject to size selective fishery |
title_full_unstemmed |
Gender differences in health and aging of Atlantic cod subject to size selective fishery |
title_sort |
gender differences in health and aging of atlantic cod subject to size selective fishery |
publishDate |
2012 |
url |
https://pub.epsilon.slu.se/10512/ https://pub.epsilon.slu.se/10512/2/Almroth_etal_130617.pdf https://doi.org/10.1242/bio.20121446 |
long_lat |
ENVELOPE(9.692,9.692,63.563,63.563) |
geographic |
Kattegat |
geographic_facet |
Kattegat |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
https://pub.epsilon.slu.se/10512/2/Almroth_etal_130617.pdf Carney Almroth, Bethanie and Sköld, Mattias and Nilsson Sköld, Helen (2012). Gender differences in health and aging of Atlantic cod subject to size selective fishery. Biology open. 1 , 922-928 [Research article] |
op_doi |
https://doi.org/10.1242/bio.20121446 |
container_title |
Biology Open |
container_volume |
1 |
container_issue |
9 |
container_start_page |
922 |
op_container_end_page |
928 |
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1766357645903527936 |