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Relationship quality in captive bonobo groups

in Behaviour
Autor:innen:
Jeroen M.G. Stevens aCentre for Research and Conservation, Royal Zoological Society of Antwerp, Koningin Astridplein 20–26, 2018 Antwerp, Belgium

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Evelien de Groot aCentre for Research and Conservation, Royal Zoological Society of Antwerp, Koningin Astridplein 20–26, 2018 Antwerp, Belgium

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Nicky Staes aCentre for Research and Conservation, Royal Zoological Society of Antwerp, Koningin Astridplein 20–26, 2018 Antwerp, Belgium
bDepartment of Biology, University of Antwerp, Groenenborgerlaan 171, 2020 Antwerp, Belgium

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We use Principal Component Analyses (PCA) to describe components of social relationship quality in bonobos. We find a three component structure, with the first two components, labelled Value and Compatibility, closely matching the theoretical constructs as well as components reported for chimpanzees and other primates. The third component differed but was abandoned based on Parallel Analysis. Among bonobos, female–female dyads have higher Value and Compatibility. Relationships between males are characterised by low Value and Compatibility. Dyads that had been housed together for a longer time and maternally related ones also have more valuable relationships, while individuals close in rank have low compatibility. The results confirm the strong bonds among female bonobos, but for the first time can describe how they differ qualitatively from close bonds reported for captive chimpanzee females. We suggest future studies should also include Parallel Analysis to more accurately describe the number of components in relationship quality.

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