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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 Orcid Logo

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

Swansea University Author: William Allen Orcid Logo

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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...

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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
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spelling 2016-06-10T12:34:49.6943733 v2 27995 2016-05-16 Sexually selected skin colour is heritable and related to fecundity in a non-human primate d6f01dd06d25fa8804daad86e251b8a5 0000-0003-2654-0438 William Allen William Allen true false 2016-05-16 SBI 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. Journal Article Proceedings of the Royal Society B: Biological Sciences 281 1794 20141602 20141602 The Royal Society 24 9 2014 2014-09-24 10.1098/rspb.2014.1602 http://rspb.royalsocietypublishing.org/content/281/1794/20141602 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2016-06-10T12:34:49.6943733 2016-05-16T09:58:58.4972507 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences C. Dubuc 1 S. Winters 2 W. L. Allen 3 L. J. N. Brent 4 J. Cascio 5 D. Maestripieri 6 A. V. Ruiz-Lambides 7 A. Widdig 8 J. P. Higham 9 William Allen 0000-0003-2654-0438 10
title Sexually selected skin colour is heritable and related to fecundity in a non-human primate
spellingShingle Sexually selected skin colour is heritable and related to fecundity in a non-human primate
William Allen
title_short Sexually selected skin colour is heritable and related to fecundity in a non-human primate
title_full Sexually selected skin colour is heritable and related to fecundity in a non-human primate
title_fullStr Sexually selected skin colour is heritable and related to fecundity in a non-human primate
title_full_unstemmed Sexually selected skin colour is heritable and related to fecundity in a non-human primate
title_sort Sexually selected skin colour is heritable and related to fecundity in a non-human primate
author_id_str_mv d6f01dd06d25fa8804daad86e251b8a5
author_id_fullname_str_mv d6f01dd06d25fa8804daad86e251b8a5_***_William Allen
author William Allen
author2 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
format Journal article
container_title Proceedings of the Royal Society B: Biological Sciences
container_volume 281
container_issue 1794
container_start_page 20141602
publishDate 2014
institution Swansea University
doi_str_mv 10.1098/rspb.2014.1602
publisher The Royal Society
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
url http://rspb.royalsocietypublishing.org/content/281/1794/20141602
document_store_str 0
active_str 0
description 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.
published_date 2014-09-24T03:34:02Z
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score 11.012678

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