1. 1. For acclimation temperatures of 12, 18, 24 and 30° C, the incubation temperatures for maximum uptake of glycine by fish scales were approximately 28, 29, 30 and 32°C, respectively. 2. 2. Cold acclimation resulted in a positive translational increase in the rate of glycine uptake. Increased fish growth rate caused both a translational increase and a rotational change in the Arrhenius-plot description of the data. 3. 3. Arrhenius activation energies (Ea) calculated over the linear range of incubation temperatures were most sensitive to growth rate for the 12°C-acclimated fish and least for the 30°C-acclimated fish. 4. 4. A strong correlation was observed between the rate of glycine uptake and the growth rate of individual fish. This correlation was higher when uptake was assayed at the acclimation temperature of the fish than at the incubation temperature of maximum glycine uptake. 5. 5. The confounding of growth rate and acclimation effects has usually not been considered in acclimation studies associated with anabolic processes, yet it appears to be an important influence.
|Original language||English (US)|
|Number of pages||8|
|Journal||Comparative Biochemistry and Physiology -- Part A: Physiology|
|State||Published - 1983|
Bibliographical noteFunding Information:
Acknowledgements-Financiaslu pport for this study was provided by the University of Minnesota Agricultural ExperimentS tationa nd the Universityo f MinnesotaC om-puter Center. We would also like to thank K. Larntz for statisticaal dvice,G . P. Busackerf or helpfulc ommentso n the manuscripta nd Joe Nicolettef or assistancien conducting the sampling.
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