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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Company of Biologists
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3507242/ https://www.ncbi.nlm.nih.gov/pubmed/23213487 http://dx.doi.org/10.1242/bio.20121446 |
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author | Carney Almroth, Bethanie Sköld, Mattias Nilsson Sköld, Helen |
author_facet | Carney Almroth, Bethanie Sköld, Mattias Nilsson Sköld, Helen |
author_sort | Carney Almroth, Bethanie |
collection | PubMed |
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 | Online Article Text |
id | pubmed-3507242 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | The Company of Biologists |
record_format | MEDLINE/PubMed |
spelling | pubmed-35072422012-12-04 Gender differences in health and aging of Atlantic cod subject to size selective fishery Carney Almroth, Bethanie Sköld, Mattias Nilsson Sköld, Helen Biol Open Research Article 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. The Company of Biologists 2012-07-31 /pmc/articles/PMC3507242/ /pubmed/23213487 http://dx.doi.org/10.1242/bio.20121446 Text en © 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/). |
spellingShingle | Research Article Carney Almroth, Bethanie Sköld, Mattias Nilsson Sköld, Helen Gender differences in health and aging of Atlantic cod subject to size selective fishery |
title | 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_short | 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 |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3507242/ https://www.ncbi.nlm.nih.gov/pubmed/23213487 http://dx.doi.org/10.1242/bio.20121446 |
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