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Testing the quality of a carrier: a field experiment on lizard signalers

Citation

Olsson, M and Healey, M and Wapstra, E and Uller, T, Testing the quality of a carrier: a field experiment on lizard signalers, Evolution, 63, (3) pp. 695-701. ISSN 0014-3820 (2009) [Refereed Article]

DOI: doi:10.1111/j.1558-5646.2008.00569.x

Abstract

In the Australian painted dragon lizard (Ctenophorus pictus), males occur in two different morphs with respect to gular color, with or without a yellow bib. Males without a bib lost within-clutch paternity significantly more often to rivals than bibbed males. Thus, it appears that bibs identify some phenotypic advantage linked to competitive ability. To test whether this could be related to whole-organism capacity to withstand an increased workload (due to better health and vigor, or evolved differences in self-maintenance), we implanted males with a lead pellet (loaded), Styrofoam pellet (controls), or sham-operated males without implants (shams), and compared male categories with respect to how they maintained body mass during the mating season. Somewhat unexpectedly, bibbed males consistently lost more body weight across all treatments and controls, although we could not verify that this translated into higher mortality in this short-lived animal (about 80% survive for one year only). However, bibbed males may invest more into "mating success" than nonbibbed males, which agrees with our experimental results and paternity data. © 2009 The Author(s).

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Behavioural Ecology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Biological Sciences
Author:Wapstra, E (Associate Professor Erik Wapstra)
ID Code:56206
Year Published:2009
Web of Science® Times Cited:9
Deposited By:Zoology
Deposited On:2009-04-01
Last Modified:2010-04-27
Downloads:0

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