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Social enhancement and social inhibition of foraging behaviour in hatchery‐reared Atlantic salmon
Author(s) -
Brown C.,
Laland K.
Publication year - 2002
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.1095-8649.2002.tb01857.x
Subject(s) - hatchery , salmo , biology , foraging , predation , fishery , fish <actinopterygii> , fish hatchery , zoology , ecology , fish farming , aquaculture
The results of two experiments showed that observation of a trained conspecific Atlantic salmon Salmo salar significantly increased the rate at which naïve hatchery‐reared fish accepted novel, live prey items, whereas the presence of an untrained conspecific actually decreased learning rates due to social inhibition. Pre‐release training involving exposure of hatchery‐reared fish to live prey items in the presence of pre‐trained demonstrators would result in a significant enhancement in their foraging success on release and help prevent starvation, which is thought to be one of the principal causes of post‐release mortality in hatchery‐reared fishes.