No Cover Image

Journal article 519 views

Sexually selected skin colour is heritable and related to fecundity in a non-human primate / C. Dubuc, S. Winters, W. L. Allen, L. J. N. Brent, J. Cascio, D. Maestripieri, A. V. Ruiz-Lambides, A. Widdig, J. P. Higham, William Allen

Proceedings of the Royal Society B: Biological Sciences, Volume: 281, Issue: 1794, Pages: 20141602 - 20141602

Swansea University Author: William Allen

Full text not available from this repository: check for access using links below.

DOI (Published version): 10.1098/rspb.2014.1602

Abstract

Sexual selection promotes the prevalence of heritable traits that increase an individual's reproductive rate. Despite theoretically strong directional selection, sexually selected traits can show inter-individual variation. Here, we investigate whether red skin ornamentation, a rare example of...

Full description

Published in: Proceedings of the Royal Society B: Biological Sciences
Published: The Royal Society 2014
Online Access: http://rspb.royalsocietypublishing.org/content/281/1794/20141602
URI: https://cronfa.swan.ac.uk/Record/cronfa27995
Tags: Add Tag
No Tags, Be the first to tag this record!
Abstract: Sexual selection promotes the prevalence of heritable traits that increase an individual's reproductive rate. Despite theoretically strong directional selection, sexually selected traits can show inter-individual variation. Here, we investigate whether red skin ornamentation, a rare example of a male mammalian trait involved in mate attraction, influences fecundity and is heritable in rhesus macaques (Macaca mulatta), and explore the mechanisms that are involved in maintaining trait variation. Interestingly, the trait is expressed by and is attractive to both sexes. We collected facial images of 266 free-ranging individuals and modelled skin redness and darkness to rhesus macaque vision. We used 20 years of genetic parentage data to calculate selection gradients on the trait and perform heritability analyses. Results show that males who were both darkly coloured and high-ranking enjoyed higher fecundity. Female skin redness was positively linked to fecundity, although it remains unclear whether this influences male selectiveness. Heritability explained 10–15% of the variation in redness and darkness, and up to 30% for skin darkness when sexes are considered separately, suggesting sex-influenced inheritance. Our results suggest that inter-individual variation is maintained through condition-dependence, with an added effect of balancing selection on male skin darkness, providing rare evidence for a mammalian trait selected through inter-sexual selection.
College: College of Science
Issue: 1794
Start Page: 20141602
End Page: 20141602