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  Male reproductive skew is higher in bonobos than chimpanzees

Surbeck, M., Langergraber, K. E., Fruth, B., Vigilant, L., & Hohmann, G. (2017). Male reproductive skew is higher in bonobos than chimpanzees. Current Biology, 27(13), R640-R641. doi:10.1016/j.cub.2017.05.039.

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 Creators:
Surbeck, Martin1, 2, Author              
Langergraber, Kevin E., Author
Fruth, Barbara3, Author              
Vigilant, Linda2, 4, Author              
Hohmann, Gottfried1, 2, Author              
Affiliations:
1Bonobos, Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society, ou_2149635              
2Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society, ou_1497674              
3External Organizations, ou_persistent22              
4Molecular Genetics Laboratory, Department of Primatology, Max Planck Institute for Evolutionary Anthropology, Max Planck Society, Deutscher Platz 6, 04103 Leipzig, DE, ou_2149639              

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 Abstract: The two closest living relatives of humans, bonobos (Pan paniscus) and chimpanzees (Pan troglodytes), share many traits that are common in humans but rare in other mammals, including societies with high fission–fusion dynamics, male philopatry, female dispersal and extensive social bonding among unrelated individuals [1] . The major difference between these two species is that male aggression is more frequent and intense in male-dominated chimpanzees than in bonobos, where the highest-ranking individuals are female [1] . One potential explanation is that because periods of female sexual receptivity and attractiveness are more extended in bonobos [2] , males compete less intensely for each mating opportunity. This would reduce the strength of selection for traits that lead to success in direct contest competition between males and in sexual coercion of females, thus increasing the potential for female choice [3] . Accordingly, it has been predicted that the influence of male dominance rank on reproductive success and the extent of male reproductive skew should be lower in bonobos than in chimpanzees [1] . Although relevant for understanding the evolution of the unusual levels of egalitarianism and cooperation found in human hunter-gatherers [4] , comparative analyses in the genus Pan have been limited by the scanty paternity data available for wild bonobos [5] . Here, we show using the largest sample of paternity data available that, contrary to expectation, male bonobos have a higher reproductive skew and a stronger relationship between dominance rank and reproductive success than chimpanzees.

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Language(s): eng - English
 Dates: 2017-07-102017-07-10
 Publication Status: Published in print
 Pages: 2
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.cub.2017.05.039
 Degree: -

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Title: Current Biology
  Abbreviation : Curr. Biol.
Source Genre: Journal
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Publ. Info: London, UK : Cell Press
Pages: - Volume / Issue: 27 (13) Sequence Number: - Start / End Page: R640 - R641 Identifier: ISSN: 0960-9822
CoNE: https://pure.mpg.de/cone/journals/resource/954925579107