Temperature-induced colour change varies seasonally in bearded dragon lizards Cadena, Viviana, Rankin, Katrina, Smith, Kathleen R., Endler, John A. and Stuart-Fox, Devi 2018, Temperature-induced colour change varies seasonally in bearded dragon lizards, Biological journal of the Linnean Society, vol. 123, no. 2, pp. 422-430, doi: 10.1093/biolinnean/blx152. Attached Files Name Description MIMEType Size Downloads Title Temperature-induced colour change varies seasonally in bearded dragon lizards Author(s) Cadena, Viviana Rankin, Katrina Smith, Kathleen R. Endler, John A. orcid.org/0000-0002-7557-7627 Stuart-Fox, Devi Journal name Biological journal of the Linnean Society Volume number 123 Issue number 2 Start page 422 End page 430 Total pages 9 Publisher Oxford University Press Place of publication Oxford, Eng. Publication date 2018-01-15 ISSN 0024-4066 1095-8312 Keyword(s) Science & Technology Life Sciences & Biomedicine Evolutionary Biology colour change lizard phenotypic plasticity seasonal variation signalling thermoregulation POGONA-VITTICEPS BACKGROUND COLOR ALPHA-MSH CAMOUFLAGE TESTOSTERONE CHAMELEON HYPOXIA STRESS Summary The benefits of colour change are expected to vary seasonally because of changes in reproductive activity, temperature and, potentially, predation risk; yet temporal variation in colour change has seldom been examined. We measured colour change in spring and autumn using captive individuals from two differently coloured populations of the central bearded dragon lizard, Pogona vitticeps. We predicted that colour change should be greater in spring than autumn because of the added requirements of reproductive and territorial activity. To elicit colour change in a standardized way, we placed lizards inside temperature-controlled chambers and measured colour at 15, 25, 35 and 40 °C, repeating experiments in spring and autumn. Lizards from both populations changed from dark grey to light yellowish or orange-brown (increasing luminance and saturation) with increasing temperature in both seasons, and both populations changed colour to a similar extent. As predicted, the maximal extent of temperature-induced colour change (in particular, luminance change) was greater in spring than autumn. Our results confirm that temperatureinduced colour change is greater in the peak activity season, probably an adaptation to the greater thermal and/or signalling needs of that time of year. Language eng DOI 10.1093/biolinnean/blx152 Field of Research 06 Biological Sciences HERDC Research category C1 Refereed article in a scholarly journal ERA Research output type C Journal article Copyright notice ©2017, The Linnean Society of London Persistent URL http://hdl.handle.net/10536/DRO/DU:30108070 Document type: Journal Article Collections: School of Life and Environmental Sciences Centre for Integrative Ecology Related Links Link Description Connect to published version 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 Wed, 02 May 2018, 16:13:26 EST Thu, 03 May 2018, 05:00:47 EST Thu, 03 May 2018, 06:05:17 EST Thu, 03 May 2018, 10:14:14 EST Thu, 03 May 2018, 10:18:03 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 0 times in Scopus Search Google Scholar Access Statistics: 102 Abstract Views, 1 File Downloads  -  Detailed Statistics Created: Wed, 02 May 2018, 16:13:26 EST

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