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 Öresund. Gender differences were clearly evident in a number of variables. Males had longer liver telomeres and higher catalase activities than females, wh...
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ftpubmed:oai:pubmedcentral.nih.gov:3507242 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 2012-07-31 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3507242 http://www.ncbi.nlm.nih.gov/pubmed/23213487 https://doi.org/10.1242/bio.20121446 en eng The Company of Biologists http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3507242 http://www.ncbi.nlm.nih.gov/pubmed/23213487 http://dx.doi.org/10.1242/bio.20121446 © 2012. Published by The Company of Biologists Ltd http://creativecommons.org/licenses/by-nc-sa/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial Share Alike License (http://creativecommons.org/licenses/by-nc-sa/3.0/). CC-BY-NC-SA Research Article Text 2012 ftpubmed https://doi.org/10.1242/bio.20121446 2013-09-04T16:25:36Z 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. Text atlantic cod Gadus morhua PubMed Central (PMC) Kattegat ENVELOPE(9.692,9.692,63.563,63.563) Biology Open 1 9 922 928 |
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Research Article Carney Almroth, Bethanie Sköld, Mattias Nilsson Sköld, Helen Gender differences in health and aging of Atlantic cod subject to size selective fishery |
topic_facet |
Research Article |
description |
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 |
Text |
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 |
publisher |
The Company of Biologists |
publishDate |
2012 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3507242 http://www.ncbi.nlm.nih.gov/pubmed/23213487 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 |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3507242 http://www.ncbi.nlm.nih.gov/pubmed/23213487 http://dx.doi.org/10.1242/bio.20121446 |
op_rights |
© 2012. Published by The Company of Biologists Ltd http://creativecommons.org/licenses/by-nc-sa/3.0 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial Share Alike License (http://creativecommons.org/licenses/by-nc-sa/3.0/). |
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CC-BY-NC-SA |
op_doi |
https://doi.org/10.1242/bio.20121446 |
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Biology Open |
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1 |
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9 |
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922 |
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928 |
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1766357646403698688 |