Dietary composition and the potential of food competition between 0-group cod (Gadus morhua L.) and some other fish species in the littoral zone
0-group cod ( Gadus morhua L.), 0-group whiting ( Merlangius merlangus L.), goldsinny wrasse ( Ctenolabrus rupestris L.), and black goby ( Gobius niger L.) were caught near Arendal in August and October 1991. Dietary composition showed that 0-group cod mainly ate calanoid copepods, gammarids, shrimp...
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fthighwire:oai:open-archive.highwire.org:icesjms:53/5/757 2023-05-15T15:48:03+02:00 Dietary composition and the potential of food competition between 0-group cod (Gadus morhua L.) and some other fish species in the littoral zone Fjøsne, Karen Gjøsæter, Jakob 1996-10-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/53/5/757 https://doi.org/10.1006/jmsc.1996.0097 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/53/5/757 http://dx.doi.org/10.1006/jmsc.1996.0097 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.1996.0097 2013-05-26T13:04:48Z 0-group cod ( Gadus morhua L.), 0-group whiting ( Merlangius merlangus L.), goldsinny wrasse ( Ctenolabrus rupestris L.), and black goby ( Gobius niger L.) were caught near Arendal in August and October 1991. Dietary composition showed that 0-group cod mainly ate calanoid copepods, gammarids, shrimps or prawns, crabs, and fish. They were generalists with a wide feeding niche. Mostly active benthic, hyperbenthic, and pelagic prey were ingested. 0-group whiting mostly ate calanoid copepods, hyperids, crabs, appendicularians, and fish. They were more specialised feeders than 0-group cod. On some occasions, whiting ate large amounts of megalopas and calanoid copepods. Prey were active benthic, hyperbenthic, or pelagic and consisted of more pelagic prey and fish than that of any of the other fish species. Goldsinny wrasse were generalists and mostly ate bryozoans, gastropods, bivalves, caprellids, gammarids, shrimps or prawns, and crabs. Prey were active, slow moving, or sedentary, and mostly benthic or hyperbenthic. Black goby mostly ate gammarids, crabs, and fish, but many of them also ate gastropods, bivalves, shrimps or prawns, insects, and poly-chaetes. They were also generalists with a wider feeding niche than 0-group cod and 0-group whiting. Black goby ate active, slow moving, or sedentary prey, mostly benthic or hyperbenthic. Dietary composition differed significantly between locations in each period and between periods in each location for all species (except black goby). The diets of 0-group cod and 0-group whiting were more similar compared to the diets of the other fish, indicating potential food competition only between these two species. Both ate many fish, but also, on some occasions, many megalopas and the copepod species Calanus finmarchicus . Differences in behaviour may, however, reduce competition. Text Calanus finmarchicus Gadus morhua Copepods HighWire Press (Stanford University) ICES Journal of Marine Science 53 5 757 770 |
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Articles Fjøsne, Karen Gjøsæter, Jakob Dietary composition and the potential of food competition between 0-group cod (Gadus morhua L.) and some other fish species in the littoral zone |
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Articles |
description |
0-group cod ( Gadus morhua L.), 0-group whiting ( Merlangius merlangus L.), goldsinny wrasse ( Ctenolabrus rupestris L.), and black goby ( Gobius niger L.) were caught near Arendal in August and October 1991. Dietary composition showed that 0-group cod mainly ate calanoid copepods, gammarids, shrimps or prawns, crabs, and fish. They were generalists with a wide feeding niche. Mostly active benthic, hyperbenthic, and pelagic prey were ingested. 0-group whiting mostly ate calanoid copepods, hyperids, crabs, appendicularians, and fish. They were more specialised feeders than 0-group cod. On some occasions, whiting ate large amounts of megalopas and calanoid copepods. Prey were active benthic, hyperbenthic, or pelagic and consisted of more pelagic prey and fish than that of any of the other fish species. Goldsinny wrasse were generalists and mostly ate bryozoans, gastropods, bivalves, caprellids, gammarids, shrimps or prawns, and crabs. Prey were active, slow moving, or sedentary, and mostly benthic or hyperbenthic. Black goby mostly ate gammarids, crabs, and fish, but many of them also ate gastropods, bivalves, shrimps or prawns, insects, and poly-chaetes. They were also generalists with a wider feeding niche than 0-group cod and 0-group whiting. Black goby ate active, slow moving, or sedentary prey, mostly benthic or hyperbenthic. Dietary composition differed significantly between locations in each period and between periods in each location for all species (except black goby). The diets of 0-group cod and 0-group whiting were more similar compared to the diets of the other fish, indicating potential food competition only between these two species. Both ate many fish, but also, on some occasions, many megalopas and the copepod species Calanus finmarchicus . Differences in behaviour may, however, reduce competition. |
format |
Text |
author |
Fjøsne, Karen Gjøsæter, Jakob |
author_facet |
Fjøsne, Karen Gjøsæter, Jakob |
author_sort |
Fjøsne, Karen |
title |
Dietary composition and the potential of food competition between 0-group cod (Gadus morhua L.) and some other fish species in the littoral zone |
title_short |
Dietary composition and the potential of food competition between 0-group cod (Gadus morhua L.) and some other fish species in the littoral zone |
title_full |
Dietary composition and the potential of food competition between 0-group cod (Gadus morhua L.) and some other fish species in the littoral zone |
title_fullStr |
Dietary composition and the potential of food competition between 0-group cod (Gadus morhua L.) and some other fish species in the littoral zone |
title_full_unstemmed |
Dietary composition and the potential of food competition between 0-group cod (Gadus morhua L.) and some other fish species in the littoral zone |
title_sort |
dietary composition and the potential of food competition between 0-group cod (gadus morhua l.) and some other fish species in the littoral zone |
publisher |
Oxford University Press |
publishDate |
1996 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/53/5/757 https://doi.org/10.1006/jmsc.1996.0097 |
genre |
Calanus finmarchicus Gadus morhua Copepods |
genre_facet |
Calanus finmarchicus Gadus morhua Copepods |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/53/5/757 http://dx.doi.org/10.1006/jmsc.1996.0097 |
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.1996.0097 |
container_title |
ICES Journal of Marine Science |
container_volume |
53 |
container_issue |
5 |
container_start_page |
757 |
op_container_end_page |
770 |
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1766383054575632384 |