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Influence of Acclimation Temperature on Preferred Temperature in the Rainbow Trout Salmo gairdneri
Author(s) -
McCauley R. W.,
Elliott J. R.,
Read L. A. A.
Publication year - 1977
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1977)106<362:ioatop>2.0.co;2
Subject(s) - rainbow trout , acclimatization , salmo , fish <actinopterygii> , trout , biology , zoology , fishery , ecology
The relation of preferred temperature to acclimation temperature of 29 rainbow trout 15 months old was examined during summer. Fish were acclimated to 5, 10, 15, 20, and 25 C, respectively, and tested individually in an electrically controlled shuttlebox device. Body temperatures monitored by a radiothermometer ingested by the fish closely approximated occupied temperatures to within 0.2 C. No significant differences were found in preferred temperature over the acclimation range studied. The calculated final preferendum was 11.3 C. Fish regulated environmental and body temperature with the same precision as they selected temperature in a spatial gradient.