Recent changes in the feeding of cod (Gadus morhua) off the Flemish Cap, Newfoundland 1989-1993
The food and feeding of Flemish Cap cod are described for 5 years based on 3921 stomachs collected in the fishing grounds off the Flemish Cap, Newfoundland in summer 1989–1993. Feeding intensity was high but the prey spectrum was narrow in all years with hyperiids and redfish ( Sebastes sp.) predomi...
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1996
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fthighwire:oai:open-archive.highwire.org:icesjms:53/5/750 2023-05-15T16:19:08+02:00 Recent changes in the feeding of cod (Gadus morhua) off the Flemish Cap, Newfoundland 1989-1993 Casas, J. M. Paz, J. 1996-10-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/53/5/750 https://doi.org/10.1006/jmsc.1996.0096 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/53/5/750 http://dx.doi.org/10.1006/jmsc.1996.0096 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.1996.0096 2013-05-26T13:04:48Z The food and feeding of Flemish Cap cod are described for 5 years based on 3921 stomachs collected in the fishing grounds off the Flemish Cap, Newfoundland in summer 1989–1993. Feeding intensity was high but the prey spectrum was narrow in all years with hyperiids and redfish ( Sebastes sp.) predominating. Squid and poly-chaetes had a high inter-annual variability. Juvenile cod diet was dominated by crustaceans, mainly hyperiids, and polychaetes, while in adult cod diet the most important prey were fish, mainly redfish. The maximum size of redfish eaten increased with cod size, but prey–predator size relationships showed weak correlation. Cannibalism increased in 1991 (mainly upon 1-year-olds), coinciding with the appearance of a large year class in 1990. In the years 1992 and 1993, a change in the diet was observed involving an increase of hyperiids in the adult cod diet and a decline of redfish. Text Gadus morhua Newfoundland HighWire Press (Stanford University) ICES Journal of Marine Science 53 5 750 756 |
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HighWire Press (Stanford University) |
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English |
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Articles Casas, J. M. Paz, J. Recent changes in the feeding of cod (Gadus morhua) off the Flemish Cap, Newfoundland 1989-1993 |
topic_facet |
Articles |
description |
The food and feeding of Flemish Cap cod are described for 5 years based on 3921 stomachs collected in the fishing grounds off the Flemish Cap, Newfoundland in summer 1989–1993. Feeding intensity was high but the prey spectrum was narrow in all years with hyperiids and redfish ( Sebastes sp.) predominating. Squid and poly-chaetes had a high inter-annual variability. Juvenile cod diet was dominated by crustaceans, mainly hyperiids, and polychaetes, while in adult cod diet the most important prey were fish, mainly redfish. The maximum size of redfish eaten increased with cod size, but prey–predator size relationships showed weak correlation. Cannibalism increased in 1991 (mainly upon 1-year-olds), coinciding with the appearance of a large year class in 1990. In the years 1992 and 1993, a change in the diet was observed involving an increase of hyperiids in the adult cod diet and a decline of redfish. |
format |
Text |
author |
Casas, J. M. Paz, J. |
author_facet |
Casas, J. M. Paz, J. |
author_sort |
Casas, J. M. |
title |
Recent changes in the feeding of cod (Gadus morhua) off the Flemish Cap, Newfoundland 1989-1993 |
title_short |
Recent changes in the feeding of cod (Gadus morhua) off the Flemish Cap, Newfoundland 1989-1993 |
title_full |
Recent changes in the feeding of cod (Gadus morhua) off the Flemish Cap, Newfoundland 1989-1993 |
title_fullStr |
Recent changes in the feeding of cod (Gadus morhua) off the Flemish Cap, Newfoundland 1989-1993 |
title_full_unstemmed |
Recent changes in the feeding of cod (Gadus morhua) off the Flemish Cap, Newfoundland 1989-1993 |
title_sort |
recent changes in the feeding of cod (gadus morhua) off the flemish cap, newfoundland 1989-1993 |
publisher |
Oxford University Press |
publishDate |
1996 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/53/5/750 https://doi.org/10.1006/jmsc.1996.0096 |
genre |
Gadus morhua Newfoundland |
genre_facet |
Gadus morhua Newfoundland |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/53/5/750 http://dx.doi.org/10.1006/jmsc.1996.0096 |
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.1996.0096 |
container_title |
ICES Journal of Marine Science |
container_volume |
53 |
container_issue |
5 |
container_start_page |
750 |
op_container_end_page |
756 |
_version_ |
1766005464133271552 |