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Testing the quality of carriers: a field experiment on lizard signallers

Olsson, Mats; Healey, Mo; Wapstra, Erik and Uller, Tobias LU (2009) In Evolution 63(3). p.695-701
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... (More)
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. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
Evolution
volume
63
issue
3
pages
695 - 701
publisher
Wiley-Blackwell
external identifiers
  • scopus:60849092540
ISSN
1558-5646
DOI
10.1111/j.1558-5646.2008.00569.x
language
English
LU publication?
no
id
8261a499-47eb-4fc8-8f2f-6495081a028e (old id 4739150)
date added to LUP
2014-11-10 13:49:03
date last changed
2017-10-29 04:05:11
@article{8261a499-47eb-4fc8-8f2f-6495081a028e,
  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.},
  author       = {Olsson, Mats and Healey, Mo and Wapstra, Erik and Uller, Tobias},
  issn         = {1558-5646},
  language     = {eng},
  number       = {3},
  pages        = {695--701},
  publisher    = {Wiley-Blackwell},
  series       = {Evolution},
  title        = {Testing the quality of carriers: a field experiment on lizard signallers},
  url          = {http://dx.doi.org/10.1111/j.1558-5646.2008.00569.x},
  volume       = {63},
  year         = {2009},
}