Simons, M.J.P., Groothuis, T.G.G. and Verhulst, S. (2015) An appraisal of how the vitamin A-redox hypothesis can maintain honesty of carotenoid-dependent signals. Ecology and Evolution, 5 (1). 224 - 228.
Abstract
The vitamin A-redox hypothesis provides an explanation for honest signaling of phenotypic quality by carotenoid-dependent traits. A key aspect of the vitamin A-redox hypothesis, applicable to both yellow and red coloration, is the hypothesized negative feedback of tightly regulated Vitamin A plasma levels on the enzyme responsible for sequestering both Vitamin A and carotenoids from the gut. We performed a meta-analysis and find that vitamin A levels are positively related to carotenoid plasma levels (r = 0.50, P = 0.0002). On the basis of this finding and further theoretical considerations, we propose that the vitamin A-redox hypothesis is unlikely to explain carotenoid-dependent honest signaling.
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Copyright, Publisher and Additional Information: | © 2014 The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. | ||||
Keywords: | Birds; Carotenoids; Coloration; Meta-analysis; Sexual selection | ||||
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Institution: | The University of Sheffield | ||||
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > School of Biosciences (Sheffield) > Department of Animal and Plant Sciences (Sheffield) | ||||
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Depositing User: | Symplectic Sheffield | ||||
Date Deposited: | 03 Mar 2015 15:22 | ||||
Last Modified: | 03 Mar 2015 15:22 | ||||
Published Version: | http://dx.doi.org/10.1002/ece3.1364 | ||||
Status: | Published | ||||
Publisher: | John Wiley and Sons Ltd | ||||
Refereed: | Yes | ||||
Identification Number: | https://doi.org/10.1002/ece3.1364 |