Thermal variation near the thermal optimum does not affect the growth, metabolism or swimming performance in wild Atlantic salmon <scp> Salmo salar </scp>

Abstract Typically, laboratory studies on the physiological effects of temperature are conducted using stable acclimation temperatures. Nonetheless, information extrapolated from these studies may not accurately represent wild populations living in thermally variable environments. The aim of this st...

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Bibliographic Details
Published in:Journal of Fish Biology
Main Authors: Morissette, Jenna, Swart, Sula, MacCormack, Tyson J., Currie, Suzanne, Morash, Andrea J.
Other Authors: Mount Allison University
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2020
Subjects:
Aquatic Science
Ecology, Evolution, Behavior and Systematics
Atlantic salmon
Salmo salar
Online Access:http://dx.doi.org/10.1111/jfb.14348
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfb.14348
https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfb.14348
https://onlinelibrary.wiley.com/doi/full-xml/10.1111/jfb.14348
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Summary:Abstract Typically, laboratory studies on the physiological effects of temperature are conducted using stable acclimation temperatures. Nonetheless, information extrapolated from these studies may not accurately represent wild populations living in thermally variable environments. The aim of this study was to compare the growth rate, metabolism and swimming performance of wild Atlantic salmon exposed to cycling temperatures, 16–21°C, and stable acclimation temperatures, 16, 18.5, 21°C. Growth rate, metabolic rate, swimming performance and anaerobic metabolites did not change among acclimation groups, suggesting that within Atlantic salmon's thermal optimum range, temperature variation has no effect on these physiological properties.

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