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Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles)

Extra-group paternity (EGP) occurs commonly among group-living mammals and plays an important role in mating systems and the dynamics of sexual selection; however, socio-ecological and genetic correlates of EGP have been underexplored. We use 23 years of demographic and genetic data from a high-dens...

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Main Authors: Annavi, Geetha, Newman, Chris, Dugdale, Hannah L., Buesching, Christina D., Sin, Yung Wa, Burke, Terry, Macdonald, David W.
Format: Article
Language:English
Published: John Wiley & Sons 2014
Online Access:http://psasir.upm.edu.my/id/eprint/34636/1/Neighbouring-group%20composition%20and%20within-group%20relatedness%20drive%20extra-group%20paternity%20rate%20in%20the%20European%20badger%20%28Meles%20meles%29.pdf
http://psasir.upm.edu.my/id/eprint/34636/
http://onlinelibrary.wiley.com/wol1/doi/10.1111/jeb.12473/abstract
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spelling my.upm.eprints.346362016-09-19T03:50:55Z http://psasir.upm.edu.my/id/eprint/34636/ Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles) Annavi, Geetha Newman, Chris Dugdale, Hannah L. Buesching, Christina D. Sin, Yung Wa Burke, Terry Macdonald, David W. Extra-group paternity (EGP) occurs commonly among group-living mammals and plays an important role in mating systems and the dynamics of sexual selection; however, socio-ecological and genetic correlates of EGP have been underexplored. We use 23 years of demographic and genetic data from a high-density European badger (Meles meles) population, to investigate the relationship between the rate of EGP in litters and mate availability, mate incompatibility and mate quality (heterozygosity). Relatedness between within-group assigned mothers and candidate fathers had a negative quadratic effect on EGP, whereas the number of neighbouring-group candidate fathers had a linear positive effect. We detected no effect of mean or maximum heterozygosity of within-group candidate fathers on EGP. Consequently, EGP was associated primarily with mate availability, subject to within-group genetic effects, potentially to mitigate mate incompatibility and inbreeding. In badgers, cryptic female choice, facilitated by superfecundation, superfoetation and delayed implantation, prevents males from monopolizing within-group females. This resonates with a meta-analysis in group-living mammals, which proposed that higher rates of EGP occur when within-group males cannot monopolize within-group females. In contrast to the positive meta-analytic association, however, we found that EGP associated negatively with the number of within-group assigned mothers and the number of within-group candidate fathers; potentially a strategy to counter within-group males committing infanticide. The relationship between the rate of EGP and socio-ecological or genetic factors can therefore be intricate, and the potential for cryptic female choice must be accounted for in comparative studies. John Wiley & Sons 2014 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/34636/1/Neighbouring-group%20composition%20and%20within-group%20relatedness%20drive%20extra-group%20paternity%20rate%20in%20the%20European%20badger%20%28Meles%20meles%29.pdf Annavi, Geetha and Newman, Chris and Dugdale, Hannah L. and Buesching, Christina D. and Sin, Yung Wa and Burke, Terry and Macdonald, David W. (2014) Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles). Journal of Evolutionary Biology, 27 (10). pp. 2191-2203. ISSN 1010-061X; ESSN: 1420-9101 http://onlinelibrary.wiley.com/wol1/doi/10.1111/jeb.12473/abstract 10.1111/jeb.12473
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Extra-group paternity (EGP) occurs commonly among group-living mammals and plays an important role in mating systems and the dynamics of sexual selection; however, socio-ecological and genetic correlates of EGP have been underexplored. We use 23 years of demographic and genetic data from a high-density European badger (Meles meles) population, to investigate the relationship between the rate of EGP in litters and mate availability, mate incompatibility and mate quality (heterozygosity). Relatedness between within-group assigned mothers and candidate fathers had a negative quadratic effect on EGP, whereas the number of neighbouring-group candidate fathers had a linear positive effect. We detected no effect of mean or maximum heterozygosity of within-group candidate fathers on EGP. Consequently, EGP was associated primarily with mate availability, subject to within-group genetic effects, potentially to mitigate mate incompatibility and inbreeding. In badgers, cryptic female choice, facilitated by superfecundation, superfoetation and delayed implantation, prevents males from monopolizing within-group females. This resonates with a meta-analysis in group-living mammals, which proposed that higher rates of EGP occur when within-group males cannot monopolize within-group females. In contrast to the positive meta-analytic association, however, we found that EGP associated negatively with the number of within-group assigned mothers and the number of within-group candidate fathers; potentially a strategy to counter within-group males committing infanticide. The relationship between the rate of EGP and socio-ecological or genetic factors can therefore be intricate, and the potential for cryptic female choice must be accounted for in comparative studies.
format Article
author Annavi, Geetha
Newman, Chris
Dugdale, Hannah L.
Buesching, Christina D.
Sin, Yung Wa
Burke, Terry
Macdonald, David W.
spellingShingle Annavi, Geetha
Newman, Chris
Dugdale, Hannah L.
Buesching, Christina D.
Sin, Yung Wa
Burke, Terry
Macdonald, David W.
Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles)
author_facet Annavi, Geetha
Newman, Chris
Dugdale, Hannah L.
Buesching, Christina D.
Sin, Yung Wa
Burke, Terry
Macdonald, David W.
author_sort Annavi, Geetha
title Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles)
title_short Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles)
title_full Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles)
title_fullStr Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles)
title_full_unstemmed Neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the European badger (Meles meles)
title_sort neighbouring-group composition and within-group relatedness drive extra-group paternity rate in the european badger (meles meles)
publisher John Wiley & Sons
publishDate 2014
url http://psasir.upm.edu.my/id/eprint/34636/1/Neighbouring-group%20composition%20and%20within-group%20relatedness%20drive%20extra-group%20paternity%20rate%20in%20the%20European%20badger%20%28Meles%20meles%29.pdf
http://psasir.upm.edu.my/id/eprint/34636/
http://onlinelibrary.wiley.com/wol1/doi/10.1111/jeb.12473/abstract
_version_ 1643831213472874496
score 13.211869

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