Among- and within-individual correlations between basal and maximal metabolic rates in birds Careau,V, Hoye,BJ, O'Dwyer,TW and Buttemer,WA 2014, Among- and within-individual correlations between basal and maximal metabolic rates in birds, The Journal of Experimental Biology, vol. 217, no. Pt 20, pp. 3593-3596, doi: 10.1242/jeb.108704. Attached Files Name Description MIMEType Size Downloads Title Among- and within-individual correlations between basal and maximal metabolic rates in birds Author(s) Careau,V Hoye,BJ orcid.org/0000-0001-9502-5582 O'Dwyer,TW Buttemer,WA Journal name The Journal of Experimental Biology Volume number 217 Issue number Pt 20 Start page 3593 End page 3596 Total pages 4 Publisher Company of Biologists Place of publication Cambridge, United Kingdom Publication date 2014-10-15 ISSN 1477-9145 Keyword(s) Endothermy Multivariate mixed models Performance RMR Resting metabolic rate VO2,max Science & Technology Life Sciences & Biomedicine Biology Life Sciences & Biomedicine - Other Topics V-O2,V-max AEROBIC PERFORMANCE VARIATION LABORATORY MICE RED JUNGLEFOWL HOUSE SPARROWS EVOLUTION CAPACITY MODEL Summary The aerobic capacity model proposes that endothermy is a by-product of selection favouring high maximal metabolic rates (MMR) and its mechanistic coupling with basal metabolic rate (BMR). Attempts to validate this model in birds are equivocal and restricted to phenotypic correlations (rP), thus failing to distinguish among- and within-individual correlations (rind and re). We examined 300 paired measurements of BMR and MMR from 60 house sparrows before and after two levels of experimental manipulation - testosterone implants and immune challenge. Overall, repeatability was significant in both BMR (R=0.25±0.06) and MMR (R=0.52±0.06). Only the testosterone treatment altered the rP between BMR and MMR, which resulted from contrasting effects on rind and re. While rind was high and significant (0.62±0.22) in sham-implanted birds, re was negative and marginally non-significant (-0.15±0.09) in testosterone-treated birds. Thus, the expected mechanistic link between BMR and MMR was apparent, but only in birds with low testosterone levels. Language eng DOI 10.1242/jeb.108704 Field of Research 060203 Ecological Physiology Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences HERDC Research category C1 Refereed article in a scholarly journal ERA Research output type C Journal article Copyright notice ©2014, Company of Biologists Persistent URL http://hdl.handle.net/10536/DRO/DU:30070425 Document type: Journal Article Collections: Faculty of Science, Engineering and Built Environment School of Life and Environmental Sciences Centre for Integrative Ecology Related Links Link Description Connect to Elements publication management system Go to link with your DU access privileges   Connect to published version Go to link with your DU access privileges   Author URL Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Tue, 10 Mar 2015, 11:23:44 EST Wed, 11 Mar 2015, 04:03:20 EST Wed, 11 Mar 2015, 07:14:33 EST Thu, 26 Mar 2015, 09:02:20 EST Thu, 26 Mar 2015, 10:24:17 EST Sat, 28 Mar 2015, 05:08:30 EST Tue, 31 Mar 2015, 13:23:22 EST Tue, 31 Mar 2015, 13:28:47 EST Tue, 31 Mar 2015, 13:31:09 EST Mon, 12 Oct 2015, 15:55:29 EST Sat, 09 Nov 2019, 20:36:52 EST Sun, 20 Mar 2022, 20:37:09 EST Filtered Full Citation counts:   Cited 14 times in TR Web of Science Cited 13 times in Scopus Search Google Scholar Access Statistics: 353 Abstract Views, 4 File Downloads  -  Detailed Statistics Created: Thu, 26 Mar 2015, 09:02:20 EST