Abstract
1. 1.|A 1°C increase in constant acclimation temperature over a range of 6.5 to 33.1°C increased the critical thermal maximum (CTM) by 0.47°C for both starved and satiated hybrid bass; however, the CTM of starved fish averaged 0.35°C lower than satiated fish. 2. 2.|If the mean daily temperature was at least 24°C, diel oscillating temperatures of ±4°C amplitude increased the CTM. 3. 3.|With a mean daily temperature of 20°C, oscillating temperatures had no effect on the CTM for satiated fish and the CTM for starved fish was reduced. 4. 4.|Photoperiod had no discernible effect on CTM.
Original language | English (US) |
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Pages (from-to) | 271-275 |
Number of pages | 5 |
Journal | Journal of Thermal Biology |
Volume | 17 |
Issue number | 4-5 |
DOIs | |
State | Published - 1992 |
Bibliographical note
Funding Information:Acknowledgements--We thank R. Bendel, P. Bergland, W. Blythe, J. Hiebert, M. Hove, J. Maher, A. Miller, A. Monson, D. O'Shea, M. Palanuk, R. Pierce, and H. Van Offelen for assistance with the experiments and the U.S. Fish and Wildlife Service, Northern States Power Company, and the University of Minnesota Agricultural Experiment Station for financial support.
Keywords
- CTM
- Morone chrysops
- Morone saxatilis
- Temperature
- survival