Gender differences in health and aging of Atlantic cod subject to size selective fishery
Summary We have analyzed health and physiological aging parameters in male and female Atlantic cod, Gadus morhua, captured in Kattegat, Skagerrak and in Öresund. Gender differences were clearly evident in a number of variables. Males had longer liver telomeres and higher catalase activities than fem...
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The Company of Biologists
2012
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Online Access: | https://doi.org/10.1242/bio.20121446 https://doaj.org/article/5cff43e4d6dd40e08332d1309d1b5bd5 |
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ftdoajarticles:oai:doaj.org/article:5cff43e4d6dd40e08332d1309d1b5bd5 2023-05-15T15:27:14+02:00 Gender differences in health and aging of Atlantic cod subject to size selective fishery Bethanie Carney Almroth Mattias Sköld Helen Nilsson Sköld 2012-07-01T00:00:00Z https://doi.org/10.1242/bio.20121446 https://doaj.org/article/5cff43e4d6dd40e08332d1309d1b5bd5 EN eng The Company of Biologists http://bio.biologists.org/content/1/9/922 https://doaj.org/toc/2046-6390 2046-6390 doi:10.1242/bio.20121446 https://doaj.org/article/5cff43e4d6dd40e08332d1309d1b5bd5 Biology Open, Vol 1, Iss 9, Pp 922-928 (2012) Telomeres Oxidative stress Glutathione Gender differences Predation effects Egg quality Fish Science Q Biology (General) QH301-705.5 article 2012 ftdoajarticles https://doi.org/10.1242/bio.20121446 2022-12-31T05:28:58Z Summary We have analyzed health and physiological aging parameters in male and female Atlantic cod, Gadus morhua, captured in Kattegat, Skagerrak and in Öresund. 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 Directory of Open Access Journals: DOAJ Articles Kattegat ENVELOPE(9.692,9.692,63.563,63.563) Biology Open 1 9 922 928 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Telomeres Oxidative stress Glutathione Gender differences Predation effects Egg quality Fish Science Q Biology (General) QH301-705.5 |
spellingShingle |
Telomeres Oxidative stress Glutathione Gender differences Predation effects Egg quality Fish Science Q Biology (General) QH301-705.5 Bethanie Carney Almroth Mattias Sköld Helen Nilsson Sköld Gender differences in health and aging of Atlantic cod subject to size selective fishery |
topic_facet |
Telomeres Oxidative stress Glutathione Gender differences Predation effects Egg quality Fish Science Q Biology (General) QH301-705.5 |
description |
Summary We have analyzed health and physiological aging parameters in male and female Atlantic cod, Gadus morhua, captured in Kattegat, Skagerrak and in Öresund. 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 |
Bethanie Carney Almroth Mattias Sköld Helen Nilsson Sköld |
author_facet |
Bethanie Carney Almroth Mattias Sköld Helen Nilsson Sköld |
author_sort |
Bethanie Carney Almroth |
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 |
publisher |
The Company of Biologists |
publishDate |
2012 |
url |
https://doi.org/10.1242/bio.20121446 https://doaj.org/article/5cff43e4d6dd40e08332d1309d1b5bd5 |
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_source |
Biology Open, Vol 1, Iss 9, Pp 922-928 (2012) |
op_relation |
http://bio.biologists.org/content/1/9/922 https://doaj.org/toc/2046-6390 2046-6390 doi:10.1242/bio.20121446 https://doaj.org/article/5cff43e4d6dd40e08332d1309d1b5bd5 |
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 |
_version_ |
1766357681172381696 |