Atlantic cod (Gadus morhua) feed during spawning off Newfoundland and Labrador
<qd> Krumsick, K. J., and Rose, G. A. 2012. Atlantic cod ( Gadus morhua ) feed during spawning off Newfoundland and Labrador. – ICES Journal of Marine Science, 69: 1701–1709. </qd>We test a current assumption that Atlantic cod ( Gadus morhua ) off Newfoundland and Labrador, Canada, do no...
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fthighwire:oai:open-archive.highwire.org:icesjms:69/10/1701 2023-05-15T15:27:01+02:00 Atlantic cod (Gadus morhua) feed during spawning off Newfoundland and Labrador Krumsick, Kyle J. Rose, George A. 2012-12-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/69/10/1701 https://doi.org/10.1093/icesjms/fss158 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/69/10/1701 http://dx.doi.org/10.1093/icesjms/fss158 Copyright (C) 2012, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 2012 fthighwire https://doi.org/10.1093/icesjms/fss158 2012-10-19T20:54:22Z <qd> Krumsick, K. J., and Rose, G. A. 2012. Atlantic cod ( Gadus morhua ) feed during spawning off Newfoundland and Labrador. – ICES Journal of Marine Science, 69: 1701–1709. </qd>We test a current assumption that Atlantic cod ( Gadus morhua ) off Newfoundland and Labrador, Canada, do not feed during the protracted spawning season (March–September). Stomach contents were analysed from 10 473 cod from four Northwest Atlantic Fisheries Organization regions (2J, 3K, 3L, and 3Ps) over 9 years from which gonads were also analysed to determine sex and maturity status. Adult cod in spawning condition did feed in all regions, usually at rates equivalent to or even greater than non-spawning fish and juveniles. Both sexes fed during spawning, though females consumed lesser amounts. Regional differences were evident. The total fullness index was greater in the northern (2J) than the southern (3Ps) region, with no consistent differences between spawners and non-spawners. The most southerly region (3Ps) exhibited the greatest prey diversity, the northern region (2J) the least. Shrimp was the major diet item in the northern regions. Capelin, zooplankton, crab, and other fish increased in importance to the south. Differences in prey items between non-spawning and spawning individuals of both sexes were possibly related to spawning behaviour. Models using consumption rates should not assume that cod do not feed during the protracted spawning season in these waters. Text atlantic cod Gadus morhua Newfoundland Northwest Atlantic HighWire Press (Stanford University) Newfoundland Canada ICES Journal of Marine Science 69 10 1701 1709 |
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HighWire Press (Stanford University) |
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Articles Krumsick, Kyle J. Rose, George A. Atlantic cod (Gadus morhua) feed during spawning off Newfoundland and Labrador |
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description |
<qd> Krumsick, K. J., and Rose, G. A. 2012. Atlantic cod ( Gadus morhua ) feed during spawning off Newfoundland and Labrador. – ICES Journal of Marine Science, 69: 1701–1709. </qd>We test a current assumption that Atlantic cod ( Gadus morhua ) off Newfoundland and Labrador, Canada, do not feed during the protracted spawning season (March–September). Stomach contents were analysed from 10 473 cod from four Northwest Atlantic Fisheries Organization regions (2J, 3K, 3L, and 3Ps) over 9 years from which gonads were also analysed to determine sex and maturity status. Adult cod in spawning condition did feed in all regions, usually at rates equivalent to or even greater than non-spawning fish and juveniles. Both sexes fed during spawning, though females consumed lesser amounts. Regional differences were evident. The total fullness index was greater in the northern (2J) than the southern (3Ps) region, with no consistent differences between spawners and non-spawners. The most southerly region (3Ps) exhibited the greatest prey diversity, the northern region (2J) the least. Shrimp was the major diet item in the northern regions. Capelin, zooplankton, crab, and other fish increased in importance to the south. Differences in prey items between non-spawning and spawning individuals of both sexes were possibly related to spawning behaviour. Models using consumption rates should not assume that cod do not feed during the protracted spawning season in these waters. |
format |
Text |
author |
Krumsick, Kyle J. Rose, George A. |
author_facet |
Krumsick, Kyle J. Rose, George A. |
author_sort |
Krumsick, Kyle J. |
title |
Atlantic cod (Gadus morhua) feed during spawning off Newfoundland and Labrador |
title_short |
Atlantic cod (Gadus morhua) feed during spawning off Newfoundland and Labrador |
title_full |
Atlantic cod (Gadus morhua) feed during spawning off Newfoundland and Labrador |
title_fullStr |
Atlantic cod (Gadus morhua) feed during spawning off Newfoundland and Labrador |
title_full_unstemmed |
Atlantic cod (Gadus morhua) feed during spawning off Newfoundland and Labrador |
title_sort |
atlantic cod (gadus morhua) feed during spawning off newfoundland and labrador |
publisher |
Oxford University Press |
publishDate |
2012 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/69/10/1701 https://doi.org/10.1093/icesjms/fss158 |
geographic |
Newfoundland Canada |
geographic_facet |
Newfoundland Canada |
genre |
atlantic cod Gadus morhua Newfoundland Northwest Atlantic |
genre_facet |
atlantic cod Gadus morhua Newfoundland Northwest Atlantic |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/69/10/1701 http://dx.doi.org/10.1093/icesjms/fss158 |
op_rights |
Copyright (C) 2012, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fss158 |
container_title |
ICES Journal of Marine Science |
container_volume |
69 |
container_issue |
10 |
container_start_page |
1701 |
op_container_end_page |
1709 |
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1766357487661875200 |