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Comparison of feed intake behaviour and stress response in isolated and non‐isolated African catfish
Author(s) -
Martins C. I. M.,
Trenovski M.,
Schrama J. W.,
Verreth J. A. J.
Publication year - 2006
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.1095-8649.2006.01121.x
Subject(s) - catfish , clarias gariepinus , biology , fight or flight response , fish <actinopterygii> , zoology , stressor , fishery , biochemistry , neuroscience , gene
This study shows that in African catfish Clarias gariepinus feed intake ( I F ) is stimulated by the presence of conspecifics resulting in higher I F and growth rate. The feeding duration and the frequency of feeding acts were lower in isolated fish as compared with non‐isolated fish, indicating a decreased feeding motivation when fish are held individually. Isolation per se , however, seems not to act as a stressor in the short‐term or to affect the stress response, probably because periods of isolation are part of the African catfish lifestyle.