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First published online March 28, 2008
Journal of Experimental Biology 211, 1257-1261 (2008)
Published by The Company of Biologists 2008
doi: 10.1242/jeb.015065
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Carotenoid intake does not mediate a relationship between reactive oxygen species and bright colouration: experimental test in a lizard

Mats Olsson1,*, Mark Wilson1, Caroline Isaksson2, Tobias Uller1,3 and Beth Mott1

1 School of Biological Sciences, The University of Wollongong, NSW 2522, Australia
2 Department of Zoology, University of Gothenburg, Box 405, SE 413 90 Gothenburg, Sweden
3 Edward Grey Institute, Department of Zoology, University of Oxford, Oxford OX1 3PS, UK


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  		Fig. 1. Male baseline levels of superoxide (bSO) at the end of the carotenoid experiment and its relationship with head chroma change during the corresponding time (mean after – before treatment reflectance measurements; see Materials and methods). Since male natural colour morphs (red, yellow) differ in these trait values, we used measurements standardised for natural colour. The relationship was also statistically significant when we controlled for body condition (r=–0.45, P=0.012, N=31).

 

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© The Company of Biologists Ltd 2008