Feeding ecology of cod (Gadus morhua L.) in Balsfjord and Ullsfjord, northern Norway, 1982-1983
A comparison is made of the feeding habits of cod in two fjords in northern Norway, Ullsfjord and Balsfjord. Of the two, Ullsfjord is the warmer and fairly typical of Norwegian coastal waters. Balsfjord is closer to the Barents Sea in its temperature regime and ecosystem. In Balsfjord, the main food...
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Oxford University Press
1989
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fthighwire:oai:open-archive.highwire.org:icesjms:45/2/190 2023-05-15T15:37:24+02:00 Feeding ecology of cod (Gadus morhua L.) in Balsfjord and Ullsfjord, northern Norway, 1982-1983 Santos, Jorge dos Falk-Petersen, Stig 1989-01-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/45/2/190 https://doi.org/10.1093/icesjms/45.2.190 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/45/2/190 http://dx.doi.org/10.1093/icesjms/45.2.190 Copyright (C) 1989, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Articles TEXT 1989 fthighwire https://doi.org/10.1093/icesjms/45.2.190 2013-05-27T20:10:22Z A comparison is made of the feeding habits of cod in two fjords in northern Norway, Ullsfjord and Balsfjord. Of the two, Ullsfjord is the warmer and fairly typical of Norwegian coastal waters. Balsfjord is closer to the Barents Sea in its temperature regime and ecosystem. In Balsfjord, the main food of small cod consisted of benthic crustaceans, while large cod fed mainly on capelin, with occasional concentration on prawns when feeding near the seabed or on krill when feeding pelagically. In Ullsfjord, crustaceans were present in the diet of cod of all sizes, prawns being the main food of cod feeding demersally and krill that of larger cod feeding pelagically. The dietary transition to capelin in Balsfjord and to krill in Ullsfjord occurred when cod reached a length of 40 to 50 cm. The present observations confirm the importance of the pelagic food chain in these fjords. Text Balsfjord Barents Sea Gadus morhua Northern Norway HighWire Press (Stanford University) Barents Sea Norway Balsfjord ENVELOPE(19.227,19.227,69.240,69.240) ICES Journal of Marine Science 45 2 190 199 |
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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 Santos, Jorge dos Falk-Petersen, Stig Feeding ecology of cod (Gadus morhua L.) in Balsfjord and Ullsfjord, northern Norway, 1982-1983 |
topic_facet |
Articles |
description |
A comparison is made of the feeding habits of cod in two fjords in northern Norway, Ullsfjord and Balsfjord. Of the two, Ullsfjord is the warmer and fairly typical of Norwegian coastal waters. Balsfjord is closer to the Barents Sea in its temperature regime and ecosystem. In Balsfjord, the main food of small cod consisted of benthic crustaceans, while large cod fed mainly on capelin, with occasional concentration on prawns when feeding near the seabed or on krill when feeding pelagically. In Ullsfjord, crustaceans were present in the diet of cod of all sizes, prawns being the main food of cod feeding demersally and krill that of larger cod feeding pelagically. The dietary transition to capelin in Balsfjord and to krill in Ullsfjord occurred when cod reached a length of 40 to 50 cm. The present observations confirm the importance of the pelagic food chain in these fjords. |
format |
Text |
author |
Santos, Jorge dos Falk-Petersen, Stig |
author_facet |
Santos, Jorge dos Falk-Petersen, Stig |
author_sort |
Santos, Jorge dos |
title |
Feeding ecology of cod (Gadus morhua L.) in Balsfjord and Ullsfjord, northern Norway, 1982-1983 |
title_short |
Feeding ecology of cod (Gadus morhua L.) in Balsfjord and Ullsfjord, northern Norway, 1982-1983 |
title_full |
Feeding ecology of cod (Gadus morhua L.) in Balsfjord and Ullsfjord, northern Norway, 1982-1983 |
title_fullStr |
Feeding ecology of cod (Gadus morhua L.) in Balsfjord and Ullsfjord, northern Norway, 1982-1983 |
title_full_unstemmed |
Feeding ecology of cod (Gadus morhua L.) in Balsfjord and Ullsfjord, northern Norway, 1982-1983 |
title_sort |
feeding ecology of cod (gadus morhua l.) in balsfjord and ullsfjord, northern norway, 1982-1983 |
publisher |
Oxford University Press |
publishDate |
1989 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/45/2/190 https://doi.org/10.1093/icesjms/45.2.190 |
long_lat |
ENVELOPE(19.227,19.227,69.240,69.240) |
geographic |
Barents Sea Norway Balsfjord |
geographic_facet |
Barents Sea Norway Balsfjord |
genre |
Balsfjord Barents Sea Gadus morhua Northern Norway |
genre_facet |
Balsfjord Barents Sea Gadus morhua Northern Norway |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/45/2/190 http://dx.doi.org/10.1093/icesjms/45.2.190 |
op_rights |
Copyright (C) 1989, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/45.2.190 |
container_title |
ICES Journal of Marine Science |
container_volume |
45 |
container_issue |
2 |
container_start_page |
190 |
op_container_end_page |
199 |
_version_ |
1766367965980131328 |