Skewed sex ratios in spawning shoals of Atlantic cod (Gadus morhua)
Research vessel survey data from the northern Grand Bank and southern Scotian Shelf/Bay of Fundy were analysed for evidence of the occurrence of shoals of Atlantic cod ( Gadus morhua ) with unequal sex ratios during the spawning season. Cod were found to form both male dominated and female dominated...
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Oxford University Press
1996
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fthighwire:oai:open-archive.highwire.org:icesjms:53/5/820 2023-05-15T15:27:00+02:00 Skewed sex ratios in spawning shoals of Atlantic cod (Gadus morhua) Morgan, M. J. Trippel, E. A. 1996-10-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/53/5/820 https://doi.org/10.1006/jmsc.1996.0103 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/53/5/820 http://dx.doi.org/10.1006/jmsc.1996.0103 Copyright (C) 1996, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 1996 fthighwire https://doi.org/10.1006/jmsc.1996.0103 2013-05-26T13:04:48Z Research vessel survey data from the northern Grand Bank and southern Scotian Shelf/Bay of Fundy were analysed for evidence of the occurrence of shoals of Atlantic cod ( Gadus morhua ) with unequal sex ratios during the spawning season. Cod were found to form both male dominated and female dominated shoals during spawning. In both areas, female dominated shoals were found in significantly deeper waters. A higher proportion of both males and females were in spawning condition in the male dominated fishing sets and a higher proportion of females had completed spawning in the female dominated fishing sets. Males may arrive at the spawning area first, with females moving into the area when ready to spawn and then returning to deeper, warmer water once they have completed spawning. Text atlantic cod Gadus morhua HighWire Press (Stanford University) ICES Journal of Marine Science 53 5 820 826 |
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HighWire Press (Stanford University) |
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fthighwire |
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English |
topic |
Articles |
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Articles Morgan, M. J. Trippel, E. A. Skewed sex ratios in spawning shoals of Atlantic cod (Gadus morhua) |
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Articles |
description |
Research vessel survey data from the northern Grand Bank and southern Scotian Shelf/Bay of Fundy were analysed for evidence of the occurrence of shoals of Atlantic cod ( Gadus morhua ) with unequal sex ratios during the spawning season. Cod were found to form both male dominated and female dominated shoals during spawning. In both areas, female dominated shoals were found in significantly deeper waters. A higher proportion of both males and females were in spawning condition in the male dominated fishing sets and a higher proportion of females had completed spawning in the female dominated fishing sets. Males may arrive at the spawning area first, with females moving into the area when ready to spawn and then returning to deeper, warmer water once they have completed spawning. |
format |
Text |
author |
Morgan, M. J. Trippel, E. A. |
author_facet |
Morgan, M. J. Trippel, E. A. |
author_sort |
Morgan, M. J. |
title |
Skewed sex ratios in spawning shoals of Atlantic cod (Gadus morhua) |
title_short |
Skewed sex ratios in spawning shoals of Atlantic cod (Gadus morhua) |
title_full |
Skewed sex ratios in spawning shoals of Atlantic cod (Gadus morhua) |
title_fullStr |
Skewed sex ratios in spawning shoals of Atlantic cod (Gadus morhua) |
title_full_unstemmed |
Skewed sex ratios in spawning shoals of Atlantic cod (Gadus morhua) |
title_sort |
skewed sex ratios in spawning shoals of atlantic cod (gadus morhua) |
publisher |
Oxford University Press |
publishDate |
1996 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/53/5/820 https://doi.org/10.1006/jmsc.1996.0103 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/53/5/820 http://dx.doi.org/10.1006/jmsc.1996.0103 |
op_rights |
Copyright (C) 1996, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1006/jmsc.1996.0103 |
container_title |
ICES Journal of Marine Science |
container_volume |
53 |
container_issue |
5 |
container_start_page |
820 |
op_container_end_page |
826 |
_version_ |
1766357459558989824 |