Genetic monogamy and mate choice in a pair-living primate

Abstract In pair-living mammals, genetic monogamy is extremely rare. One possible reason is that in socially monogamous animals, mate choice can be severely constrained, increasing the risk of inbreeding or pairing with an incompatible or low-quality partner. To escape these constraints, individuals...

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Autores principales:	Sofya Dolotovskaya, Christian Roos, Eckhard W. Heymann
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/53a3983f44974aaba708008e31416127
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spelling	oai:doaj.org-article:53a3983f44974aaba708008e314161272021-12-02T16:09:09ZGenetic monogamy and mate choice in a pair-living primate10.1038/s41598-020-77132-92045-2322https://doaj.org/article/53a3983f44974aaba708008e314161272020-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-77132-9https://doaj.org/toc/2045-2322Abstract In pair-living mammals, genetic monogamy is extremely rare. One possible reason is that in socially monogamous animals, mate choice can be severely constrained, increasing the risk of inbreeding or pairing with an incompatible or low-quality partner. To escape these constraints, individuals might engage in extra-pair copulations. Alternatively, inbreeding can be avoided by dispersal. However, little is known about the interactions between mating system, mate choice, and dispersal in pair-living mammals. Here we genotyped 41 wild individuals from 14 groups of coppery titi monkeys (Plecturocebus cupreus) in Peruvian Amazon using 18 microsatellite loci. Parentage analyses of 18 young revealed no cases of extra-pair paternity, indicating that the study population is mostly genetically monogamous. We did not find evidence for relatedness- or heterozygosity-based mate choice. Despite the lack of evidence for active inbreeding avoidance via mate choice, mating partners were on average not related. We further found that dispersal was not sex-biased, with both sexes dispersing opportunistically over varying distances. Our findings suggest that even opportunistic dispersal, as long as it is not constrained, can generate sufficient genetic diversity to prevent inbreeding. This, in turn, can render active inbreeding avoidance via mate choice and extra-pair copulations less necessary, helping to maintain genetic monogamy.Sofya DolotovskayaChristian RoosEckhard W. HeymannNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-13 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sofya Dolotovskaya Christian Roos Eckhard W. Heymann Genetic monogamy and mate choice in a pair-living primate
description	Abstract In pair-living mammals, genetic monogamy is extremely rare. One possible reason is that in socially monogamous animals, mate choice can be severely constrained, increasing the risk of inbreeding or pairing with an incompatible or low-quality partner. To escape these constraints, individuals might engage in extra-pair copulations. Alternatively, inbreeding can be avoided by dispersal. However, little is known about the interactions between mating system, mate choice, and dispersal in pair-living mammals. Here we genotyped 41 wild individuals from 14 groups of coppery titi monkeys (Plecturocebus cupreus) in Peruvian Amazon using 18 microsatellite loci. Parentage analyses of 18 young revealed no cases of extra-pair paternity, indicating that the study population is mostly genetically monogamous. We did not find evidence for relatedness- or heterozygosity-based mate choice. Despite the lack of evidence for active inbreeding avoidance via mate choice, mating partners were on average not related. We further found that dispersal was not sex-biased, with both sexes dispersing opportunistically over varying distances. Our findings suggest that even opportunistic dispersal, as long as it is not constrained, can generate sufficient genetic diversity to prevent inbreeding. This, in turn, can render active inbreeding avoidance via mate choice and extra-pair copulations less necessary, helping to maintain genetic monogamy.
format	article
author	Sofya Dolotovskaya Christian Roos Eckhard W. Heymann
author_facet	Sofya Dolotovskaya Christian Roos Eckhard W. Heymann
author_sort	Sofya Dolotovskaya
title	Genetic monogamy and mate choice in a pair-living primate
title_short	Genetic monogamy and mate choice in a pair-living primate
title_full	Genetic monogamy and mate choice in a pair-living primate
title_fullStr	Genetic monogamy and mate choice in a pair-living primate
title_full_unstemmed	Genetic monogamy and mate choice in a pair-living primate
title_sort	genetic monogamy and mate choice in a pair-living primate
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/53a3983f44974aaba708008e31416127
work_keys_str_mv	AT sofyadolotovskaya geneticmonogamyandmatechoiceinapairlivingprimate AT christianroos geneticmonogamyandmatechoiceinapairlivingprimate AT eckhardwheymann geneticmonogamyandmatechoiceinapairlivingprimate
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Genetic monogamy and mate choice in a pair-living primate

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