Journal Title
Title of Journal: J Comp Physiol B
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Abbravation: Journal of Comparative Physiology B
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Publisher
Springer-Verlag
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Authors: Jan Ohlberger Georg Staaks Franz Hölker
Publish Date: 2007/07/20
Volume: 177, Issue: 8, Pages: 905-916
Abstract
This study gives an integrated analysis of the effects of temperature swimming speed and body mass on standard metabolism and aerobic swimming performance in vendace Coregonus albula L The metabolic rate was investigated at 4 8 and 15°C using one flowthrough respirometer and two intermittentflow swim tunnels We found that the standard metabolic rate SMR which increased significantly with temperature accounted for up to 2/3 of the total swimming costs at optimum speed U opt although mean U opt was high ranging from 20 to 28 body lengths per second Net swimming costs increased with swimming speed but showed no clear trend with temperature The influence of body mass on the metabolic rate varied with temperature and activity level resulting in scaling exponents b of 071–094 A multivariate regression analysis was performed to integrate the effects of temperature speed and mass AMR = 082M 093 exp007T + 043M 093 U 203 The regression analysis showed that temperature affects standard but not net active metabolic costs in this species Further we conclude that a low speed exponent high optimum speeds and high ratios of standard to activity costs suggest a remarkably efficient swimming performance in vendace
Keywords:
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