Seasonal prevalence and intensity of follicular atresia in Baltic cod Gadus morhua callarias L.
In the present study, 307 ovaries of eastern Baltic cod Gadus morhua callarias sampled during the prespawning and spawning season 2000 were analysed histologically to estimate the seasonal prevalence and intensity of atresia. The number of atretic oocytes per ovary was estimated using a combination...
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crwiley:10.1111/j.1095-8649.2007.01760.x 2024-04-21T08:02:16+00:00 Seasonal prevalence and intensity of follicular atresia in Baltic cod Gadus morhua callarias L. Kraus, G. Tomkiewicz, J. Diekmann, R. Köster, F. W. 2008 http://dx.doi.org/10.1111/j.1095-8649.2007.01760.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2007.01760.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2007.01760.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 72, issue 4, page 831-847 ISSN 0022-1112 1095-8649 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2008 crwiley https://doi.org/10.1111/j.1095-8649.2007.01760.x 2024-03-26T09:17:05Z In the present study, 307 ovaries of eastern Baltic cod Gadus morhua callarias sampled during the prespawning and spawning season 2000 were analysed histologically to estimate the seasonal prevalence and intensity of atresia. The number of atretic oocytes per ovary was estimated using a combination of the physical disector method and volume fraction (Delesse principle). Atretic oocytes were observed in 32% of the ovaries. Prevalence of atresia was independent of female size, but increased significantly with declining female condition from prespawning and through the spawning stages. The relative intensity of atresia, i.e. number of atretic oocytes in relation to normally developed vitellogenic oocytes, was low amounting to 1·4% on average. Similar to prevalence, relative intensity of atresia differed significantly between maturity stages and increased with decreasing female condition. The population egg loss due to atresia amounted to 4·6% indicating that Baltic cod was performing close to maximum productivity, i.e. potential egg production. Article in Journal/Newspaper Gadus morhua Wiley Online Library Journal of Fish Biology 72 4 831 847 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Kraus, G. Tomkiewicz, J. Diekmann, R. Köster, F. W. Seasonal prevalence and intensity of follicular atresia in Baltic cod Gadus morhua callarias L. |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
In the present study, 307 ovaries of eastern Baltic cod Gadus morhua callarias sampled during the prespawning and spawning season 2000 were analysed histologically to estimate the seasonal prevalence and intensity of atresia. The number of atretic oocytes per ovary was estimated using a combination of the physical disector method and volume fraction (Delesse principle). Atretic oocytes were observed in 32% of the ovaries. Prevalence of atresia was independent of female size, but increased significantly with declining female condition from prespawning and through the spawning stages. The relative intensity of atresia, i.e. number of atretic oocytes in relation to normally developed vitellogenic oocytes, was low amounting to 1·4% on average. Similar to prevalence, relative intensity of atresia differed significantly between maturity stages and increased with decreasing female condition. The population egg loss due to atresia amounted to 4·6% indicating that Baltic cod was performing close to maximum productivity, i.e. potential egg production. |
format |
Article in Journal/Newspaper |
author |
Kraus, G. Tomkiewicz, J. Diekmann, R. Köster, F. W. |
author_facet |
Kraus, G. Tomkiewicz, J. Diekmann, R. Köster, F. W. |
author_sort |
Kraus, G. |
title |
Seasonal prevalence and intensity of follicular atresia in Baltic cod Gadus morhua callarias L. |
title_short |
Seasonal prevalence and intensity of follicular atresia in Baltic cod Gadus morhua callarias L. |
title_full |
Seasonal prevalence and intensity of follicular atresia in Baltic cod Gadus morhua callarias L. |
title_fullStr |
Seasonal prevalence and intensity of follicular atresia in Baltic cod Gadus morhua callarias L. |
title_full_unstemmed |
Seasonal prevalence and intensity of follicular atresia in Baltic cod Gadus morhua callarias L. |
title_sort |
seasonal prevalence and intensity of follicular atresia in baltic cod gadus morhua callarias l. |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2007.01760.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2007.01760.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2007.01760.x |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
Journal of Fish Biology volume 72, issue 4, page 831-847 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2007.01760.x |
container_title |
Journal of Fish Biology |
container_volume |
72 |
container_issue |
4 |
container_start_page |
831 |
op_container_end_page |
847 |
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1796942471168524288 |