Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984-2006
<qd> Yaragina, N. A. 2010. Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984–2006. – ICES Journal of Marine Science, 67: 000–000. </qd>Russian samples of cod caught in the Barents Sea during November–February, the period of migration t...
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fthighwire:oai:open-archive.highwire.org:icesjms:fsq059v1 2023-05-15T14:30:24+02:00 Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984-2006 Yaragina, Natalia A. 2010-06-21 01:36:56.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/fsq059v1 https://doi.org/10.1093/icesjms/fsq059 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/fsq059v1 http://dx.doi.org/10.1093/icesjms/fsq059 Copyright (C) 2010, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Rebuilding Depleted Fish Stocks - Biology Ecology Social Science and Management Strategies TEXT 2010 fthighwire https://doi.org/10.1093/icesjms/fsq059 2013-05-26T22:46:39Z <qd> Yaragina, N. A. 2010. Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984–2006. – ICES Journal of Marine Science, 67: 000–000. </qd>Russian samples of cod caught in the Barents Sea during November–February, the period of migration to the overwintering and spawning grounds, were re-analysed by grouping the maturity stages recorded in three classes: immature, ripening, and apparently mature fish, with gonads of uncertain status. When treated by age class and gender, these three classes were characterized by significant differences in size (length and weight) and condition (somatic and a liver index). Within an age group, the group with uncertain status was on average consistently larger than the ripening fish and the latter group was on average larger than the immature component. However, in terms of condition, fish of uncertain status resembled the immature fish. Males and females displayed very similar patterns, although the levels were consistently lower for the former. The patterns are consistent with the interpretation that the gonads of uncertain status represent non-reproductive, mature fish. At the population level, the percentage of mature fish that presumably skip spawning varied annually between 4 and 21%, but this has little effect on the perception of the overall development in spawning-stock biomass. No correlation was found between the non-reproductive fraction and environmental factors examined. Text Arctic cod Arctic Barents Sea Northeast Arctic cod HighWire Press (Stanford University) Arctic Barents Sea ICES Journal of Marine Science 67 9 2033 2041 |
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Open Polar |
collection |
HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
Rebuilding Depleted Fish Stocks - Biology Ecology Social Science and Management Strategies |
spellingShingle |
Rebuilding Depleted Fish Stocks - Biology Ecology Social Science and Management Strategies Yaragina, Natalia A. Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984-2006 |
topic_facet |
Rebuilding Depleted Fish Stocks - Biology Ecology Social Science and Management Strategies |
description |
<qd> Yaragina, N. A. 2010. Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984–2006. – ICES Journal of Marine Science, 67: 000–000. </qd>Russian samples of cod caught in the Barents Sea during November–February, the period of migration to the overwintering and spawning grounds, were re-analysed by grouping the maturity stages recorded in three classes: immature, ripening, and apparently mature fish, with gonads of uncertain status. When treated by age class and gender, these three classes were characterized by significant differences in size (length and weight) and condition (somatic and a liver index). Within an age group, the group with uncertain status was on average consistently larger than the ripening fish and the latter group was on average larger than the immature component. However, in terms of condition, fish of uncertain status resembled the immature fish. Males and females displayed very similar patterns, although the levels were consistently lower for the former. The patterns are consistent with the interpretation that the gonads of uncertain status represent non-reproductive, mature fish. At the population level, the percentage of mature fish that presumably skip spawning varied annually between 4 and 21%, but this has little effect on the perception of the overall development in spawning-stock biomass. No correlation was found between the non-reproductive fraction and environmental factors examined. |
format |
Text |
author |
Yaragina, Natalia A. |
author_facet |
Yaragina, Natalia A. |
author_sort |
Yaragina, Natalia A. |
title |
Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984-2006 |
title_short |
Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984-2006 |
title_full |
Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984-2006 |
title_fullStr |
Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984-2006 |
title_full_unstemmed |
Biological parameters of immature, ripening, and non-reproductive, mature northeast Arctic cod in 1984-2006 |
title_sort |
biological parameters of immature, ripening, and non-reproductive, mature northeast arctic cod in 1984-2006 |
publisher |
Oxford University Press |
publishDate |
2010 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/fsq059v1 https://doi.org/10.1093/icesjms/fsq059 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic cod Arctic Barents Sea Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Barents Sea Northeast Arctic cod |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/fsq059v1 http://dx.doi.org/10.1093/icesjms/fsq059 |
op_rights |
Copyright (C) 2010, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsq059 |
container_title |
ICES Journal of Marine Science |
container_volume |
67 |
container_issue |
9 |
container_start_page |
2033 |
op_container_end_page |
2041 |
_version_ |
1766304255628541952 |