Auer, S. K., Salin, K., Rudolf, A. M., Anderson, G. J. and Metcalfe, N. B. (2016) Differential effects of food availability on minimum and maximum rates of metabolism. Biology Letters, 12(10), 20160586. (doi: 10.1098/rsbl.2016.0586)
|
Text
129951.pdf - Published Version Available under License Creative Commons Attribution. 339kB |
Abstract
Metabolic rates reflect the energetic cost of living but exhibit remarkable variation among conspecifics, partly as a result of the constraints imposed by environmental conditions. Metabolic rates are sensitive to changes in temperature and oxygen availability, but effects of food availability, particularly on maximum metabolic rates, are not well understood. Here, we show in brown trout (Salmo trutta) that maximum metabolic rates are immutable but minimum metabolic rates increase as a positive function of food availability. As a result, aerobic scope (i.e. the capacity to elevate metabolism above baseline requirements) declines as food availability increases. These differential changes in metabolic rates likely have important consequences for how organisms partition available metabolic power to different functions under the constraints imposed by food availability.
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Anderson, Mr Graeme and Auer, Dr Sonya and Rudolf, Ms Agata Marta and Metcalfe, Professor Neil and Salin, Dr Karine |
Authors: | Auer, S. K., Salin, K., Rudolf, A. M., Anderson, G. J., and Metcalfe, N. B. |
College/School: | College of Medical Veterinary and Life Sciences > School of Biodiversity, One Health & Veterinary Medicine |
Journal Name: | Biology Letters |
Publisher: | The Royal Society |
ISSN: | 1744-9561 |
ISSN (Online): | 1744-957X |
Published Online: | 18 October 2016 |
Copyright Holders: | Copyright © 2016 The Authors |
First Published: | First published in Biology Letters 12(10):20160586 |
Publisher Policy: | Reproduced under a Creative Commons License |
University Staff: Request a correction | Enlighten Editors: Update this record