Competition for food and predator-prey relationships among young cod (Gadus Morhua) and some other fish from shallow waters. In: Flødevigen rapportserie no 1, 1988
Experiments were conducted to study food competition between young cod (20-30 cm) and some other fish from shallow waters. When food was dropped from the surlace the cod took much more than the other species, but goldsinny-wrasse, Ctenolabrus rupestris, and flounder. Platichthys flesus, also took co...
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ftimr:oai:imr.brage.unit.no:11250/115156 2023-05-15T16:19:07+02:00 Competition for food and predator-prey relationships among young cod (Gadus Morhua) and some other fish from shallow waters. In: Flødevigen rapportserie no 1, 1988 Gjøsæter, Jakob 1988 527746 bytes application/pdf http://hdl.handle.net/11250/115156 eng eng Havforskningsinstituttet Flødevigen rapportserie 1, 1988 urn:issn:0333-2594 http://hdl.handle.net/11250/115156 1-15 Research report 1988 ftimr 2021-09-23T20:14:47Z Experiments were conducted to study food competition between young cod (20-30 cm) and some other fish from shallow waters. When food was dropped from the surlace the cod took much more than the other species, but goldsinny-wrasse, Ctenolabrus rupestris, and flounder. Platichthys flesus, also took considerable quantities. Competition belween small (15-17 cm) and larger (22-26 cm) cod was generally in favour of the larger fish. The first piece of food offered was often taken by the smallest fish. After that the big fish took most of the food till it was satisfied. Then the small fish could feed again. Experiments in aquaria and in large outdoor basins showed that cod of 20-50 cm length will eat small cod and whiting, Merlangius merlangus (7- 20 cm) even if other, natural or artificial, food is available. Small cod apparently have a better chance of survival in basins with macroalgae. Report Gadus morhua Institute for Marine Research: Brage IMR |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Experiments were conducted to study food competition between young cod (20-30 cm) and some other fish from shallow waters. When food was dropped from the surlace the cod took much more than the other species, but goldsinny-wrasse, Ctenolabrus rupestris, and flounder. Platichthys flesus, also took considerable quantities. Competition belween small (15-17 cm) and larger (22-26 cm) cod was generally in favour of the larger fish. The first piece of food offered was often taken by the smallest fish. After that the big fish took most of the food till it was satisfied. Then the small fish could feed again. Experiments in aquaria and in large outdoor basins showed that cod of 20-50 cm length will eat small cod and whiting, Merlangius merlangus (7- 20 cm) even if other, natural or artificial, food is available. Small cod apparently have a better chance of survival in basins with macroalgae. |
format |
Report |
author |
Gjøsæter, Jakob |
spellingShingle |
Gjøsæter, Jakob Competition for food and predator-prey relationships among young cod (Gadus Morhua) and some other fish from shallow waters. In: Flødevigen rapportserie no 1, 1988 |
author_facet |
Gjøsæter, Jakob |
author_sort |
Gjøsæter, Jakob |
title |
Competition for food and predator-prey relationships among young cod (Gadus Morhua) and some other fish from shallow waters. In: Flødevigen rapportserie no 1, 1988 |
title_short |
Competition for food and predator-prey relationships among young cod (Gadus Morhua) and some other fish from shallow waters. In: Flødevigen rapportserie no 1, 1988 |
title_full |
Competition for food and predator-prey relationships among young cod (Gadus Morhua) and some other fish from shallow waters. In: Flødevigen rapportserie no 1, 1988 |
title_fullStr |
Competition for food and predator-prey relationships among young cod (Gadus Morhua) and some other fish from shallow waters. In: Flødevigen rapportserie no 1, 1988 |
title_full_unstemmed |
Competition for food and predator-prey relationships among young cod (Gadus Morhua) and some other fish from shallow waters. In: Flødevigen rapportserie no 1, 1988 |
title_sort |
competition for food and predator-prey relationships among young cod (gadus morhua) and some other fish from shallow waters. in: flødevigen rapportserie no 1, 1988 |
publisher |
Havforskningsinstituttet |
publishDate |
1988 |
url |
http://hdl.handle.net/11250/115156 |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_source |
1-15 |
op_relation |
Flødevigen rapportserie 1, 1988 urn:issn:0333-2594 http://hdl.handle.net/11250/115156 |
_version_ |
1766005447022608384 |