Knowledge of the genetic mating system of animal species is essential for our understanding of the evolution of social systems and individual reproductive strategies. In recent years, genetic methods have uncovered an unexpected diversity of paternal genetic contributions across diverse animal social mating systems, but particularly in pair‐living species. In most pair‐living birds, for example, genetic and behavioral observations have confirmed a previously unknown significance of extra‐pair copulations (EPCs) and extra‐pair paternity. Among mammals, white‐handed gibbons (Hylobates lar) are also known to live in pairs and are traditionally believed to be single‐male single‐female breeders. However, at Khao Yai National Park, Thailand, behavioral observations have confirmed the occurrence of both EPCs and functional multi‐male grouping, but knowledge about the genetic mating system is still unavailable. In this study, we genotyped 89 white‐handed gibbons of the Khao Yai population based on fecal samplings and were able to determine paternity for 41 offspring through short tandem repeat analysis. We found that females’ stable social partners sired the majority (90.5%) of offspring (N ¼ 38), while only a few (7.1%) offspring (n ¼ 2 confirmed cases; n ¼ 1 inferred case) were conceived with extrapair partners. The paternity of one offspring remained inconclusive (2.4%), because the offspring’s genotype did not mismatch with the genotypes of two potential sires. Like other predominantly pairliving species, gibbons appear to follow a mixed‐reproductive strategy. The genetic mating system of wild white‐handed gibbons is best described as flexible, primarily monogamous and opportunistically promiscuous.

Barelli, C.; Mastudaira, K.; Roos, C.; Wolf, T.; Heistermann, M.; Keith, H.; Ishida, T.; Malaivijitnond, S.; Reichard, U.H. (2013). Extra-pair paternity confirmed in wild white-handed gibbons. American journal of primatology, 75: 1185-1195. doi: 10.1002/ajp.22180

Extra-pair paternity confirmed in wild white-handed gibbons

BARELLI, CLAUDIA;
2013-01-01

Abstract

Knowledge of the genetic mating system of animal species is essential for our understanding of the evolution of social systems and individual reproductive strategies. In recent years, genetic methods have uncovered an unexpected diversity of paternal genetic contributions across diverse animal social mating systems, but particularly in pair‐living species. In most pair‐living birds, for example, genetic and behavioral observations have confirmed a previously unknown significance of extra‐pair copulations (EPCs) and extra‐pair paternity. Among mammals, white‐handed gibbons (Hylobates lar) are also known to live in pairs and are traditionally believed to be single‐male single‐female breeders. However, at Khao Yai National Park, Thailand, behavioral observations have confirmed the occurrence of both EPCs and functional multi‐male grouping, but knowledge about the genetic mating system is still unavailable. In this study, we genotyped 89 white‐handed gibbons of the Khao Yai population based on fecal samplings and were able to determine paternity for 41 offspring through short tandem repeat analysis. We found that females’ stable social partners sired the majority (90.5%) of offspring (N ¼ 38), while only a few (7.1%) offspring (n ¼ 2 confirmed cases; n ¼ 1 inferred case) were conceived with extrapair partners. The paternity of one offspring remained inconclusive (2.4%), because the offspring’s genotype did not mismatch with the genotypes of two potential sires. Like other predominantly pairliving species, gibbons appear to follow a mixed‐reproductive strategy. The genetic mating system of wild white‐handed gibbons is best described as flexible, primarily monogamous and opportunistically promiscuous.
Biodiversità Tropicale
articolo in rivista
2013
pubblicato
75
1185
1195
Si
con Impact Factor
si
Barelli, C.; Mastudaira, K.; Roos, C.; Wolf, T.; Heistermann, M.; Keith, H.; Ishida, T.; Malaivijitnond, S.; Reichard, U.H.
Barelli, C.; Mastudaira, K.; Roos, C.; Wolf, T.; Heistermann, M.; Keith, H.; Ishida, T.; Malaivijitnond, S.; Reichard, U.H. (2013). Extra-pair paternity confirmed in wild white-handed gibbons. American journal of primatology, 75: 1185-1195. doi: 10.1002/ajp.22180
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10991/91
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