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Resource sharing among cod, haddock, saithe and pollack on a herring spawning ground
Author(s) -
Høines Å. S.,
Bergstad O. A.
Publication year - 1999
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1999.tb02073.x
Subject(s) - haddock , gadus , herring , biology , clupea , fishery , gadidae , notropis , intraspecific competition , groundfish , predation , atlantic cod , zoology , fisheries management , ecology , fish <actinopterygii> , fishing
Cod Gadus morhua , haddock Melanogrammus aeglefinus , pollack Pollachius pollachius and saithe Pollachius virens were abundant fishes on herring Clupea harengus spawning grounds o. southwestern Norway. Their diets were species specific and ontogenetic changes were similar to patterns observed in other areas, indicating both inter‐ and intraspecific resource sharing. However, strong interspecific diet overlap occurred when cod and pollack preyed upon sandeel Ammodytes marinus , and when all the gadoids fed on herring eggs during the herring spawning season in the spring. These prey items were very abundant and the extensive diet overlap may not reflect strong competitive interaction.