Cod egg characteristics and viability in relation to low temperature and maternal nutritional condition
In 1995 and 1996, groups of female cod ( Gadus morhua ) of varying nutritional condition and maturing at different temperatures were used to investigate relationships between female condition, egg production, egg characteristics, and viability. Over the two years, egg samples from every batch spawne...
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2001
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fthighwire:oai:open-archive.highwire.org:icesjms:58/3/672 2023-05-15T16:19:15+02:00 Cod egg characteristics and viability in relation to low temperature and maternal nutritional condition Ouellet, Patrick Lambert, Yvan Bérubé, Isabelle 2001-01-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/58/3/672 https://doi.org/10.1006/jmsc.2001.1065 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/58/3/672 http://dx.doi.org/10.1006/jmsc.2001.1065 Copyright (C) 2001, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Regular Articles TEXT 2001 fthighwire https://doi.org/10.1006/jmsc.2001.1065 2013-05-27T04:12:05Z In 1995 and 1996, groups of female cod ( Gadus morhua ) of varying nutritional condition and maturing at different temperatures were used to investigate relationships between female condition, egg production, egg characteristics, and viability. Over the two years, egg samples from every batch spawned by 34 females were analyzed for egg diameter, dry mass, and energy content. In addition, 51 egg batches from 24 females (ca. 2 egg batches female−1 yr−1) were used to monitor development rate and hatching success. The weighted mean egg dry mass was positively correlated (p<0.05) to the females' pre-spawning condition in 1996. In 1995 this positive correlation was not observed for females at ∼2°C during maturation. For both years, the decline in the mean egg dry mass per batch throughout spawning was correlated (p<0.05) with the females' post-spawning energy reserves. However, no trend in the total egg dry mass per batch during the sequence of spawning was observed. Thus, the total energy investment per batch remained stable throughout spawning and was not influenced by the depletion of the females' energy reserves. In 1996, high hatching successes were observed only for egg batches from females in high pre-spawning condition. However, egg size and dry mass showed no correlation with survival rate or hatching success in either year. Text Gadus morhua HighWire Press (Stanford University) ICES Journal of Marine Science 58 3 672 686 |
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HighWire Press (Stanford University) |
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English |
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Regular Articles |
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Regular Articles Ouellet, Patrick Lambert, Yvan Bérubé, Isabelle Cod egg characteristics and viability in relation to low temperature and maternal nutritional condition |
topic_facet |
Regular Articles |
description |
In 1995 and 1996, groups of female cod ( Gadus morhua ) of varying nutritional condition and maturing at different temperatures were used to investigate relationships between female condition, egg production, egg characteristics, and viability. Over the two years, egg samples from every batch spawned by 34 females were analyzed for egg diameter, dry mass, and energy content. In addition, 51 egg batches from 24 females (ca. 2 egg batches female−1 yr−1) were used to monitor development rate and hatching success. The weighted mean egg dry mass was positively correlated (p<0.05) to the females' pre-spawning condition in 1996. In 1995 this positive correlation was not observed for females at ∼2°C during maturation. For both years, the decline in the mean egg dry mass per batch throughout spawning was correlated (p<0.05) with the females' post-spawning energy reserves. However, no trend in the total egg dry mass per batch during the sequence of spawning was observed. Thus, the total energy investment per batch remained stable throughout spawning and was not influenced by the depletion of the females' energy reserves. In 1996, high hatching successes were observed only for egg batches from females in high pre-spawning condition. However, egg size and dry mass showed no correlation with survival rate or hatching success in either year. |
format |
Text |
author |
Ouellet, Patrick Lambert, Yvan Bérubé, Isabelle |
author_facet |
Ouellet, Patrick Lambert, Yvan Bérubé, Isabelle |
author_sort |
Ouellet, Patrick |
title |
Cod egg characteristics and viability in relation to low temperature and maternal nutritional condition |
title_short |
Cod egg characteristics and viability in relation to low temperature and maternal nutritional condition |
title_full |
Cod egg characteristics and viability in relation to low temperature and maternal nutritional condition |
title_fullStr |
Cod egg characteristics and viability in relation to low temperature and maternal nutritional condition |
title_full_unstemmed |
Cod egg characteristics and viability in relation to low temperature and maternal nutritional condition |
title_sort |
cod egg characteristics and viability in relation to low temperature and maternal nutritional condition |
publisher |
Oxford University Press |
publishDate |
2001 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/58/3/672 https://doi.org/10.1006/jmsc.2001.1065 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/58/3/672 http://dx.doi.org/10.1006/jmsc.2001.1065 |
op_rights |
Copyright (C) 2001, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1006/jmsc.2001.1065 |
container_title |
ICES Journal of Marine Science |
container_volume |
58 |
container_issue |
3 |
container_start_page |
672 |
op_container_end_page |
686 |
_version_ |
1766005610313154560 |