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Social status, access to food, and compensatory growth in juvenile Atlantic salmon
Author(s) -
Maclean A.,
Metcalfe N. B.
Publication year - 2001
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.1095-8649.2001.tb02290.x
Subject(s) - salmo , juvenile , biology , compensatory growth (organ) , fishery , fish <actinopterygii> , salmonidae , ecology , zoology , kidney , endocrinology
Juvenile Atlantic salmon Salmo salar subjected to three weeks of cooler temperatures were 8·5% smaller than controls at the end of the temperature manipulation, but had caught up in size 20 weeks later. The behavioural means is examined by which this catch‐up or compensatory growth is achieved. While on average compensating fish did not spend more time feeding, dominant fish within each group gained more exclusive access to the feeding area during periods of catch‐up growth. Therefore the extent to which compensatory growth could be achieved was dependent on both the social status of the individual and the dominants’ ability to monopolize the food patch.