Increased alertness and moderate ingroup cohesion in bonobos' response to outgroup cues.

Autor: Brooks J; Institute for Advanced Study, Kyoto University, Kyoto, Japan.; Wildlife Research Center, Kyoto University, Kyoto, Japan.; Kumamoto Sanctuary, Kyoto University, Kyoto, Japan., van Heijst K; Institute for Advanced Study, Kyoto University, Kyoto, Japan., Epping A; Ape Cognition and Conservation Initiative, Des Moines, Iowa, United States of America., Lee SH; Wildlife Research Center, Kyoto University, Kyoto, Japan., Niksarli A; Department of Anthropology, Yeditepe University, İstanbul, Türkiye., Pope A; Department of Psychology, University of Warwick, Coventry, United Kingdom., Clay Z; Department of Psychology, Durham University, Durham, United Kingdom., Kret ME; Department of Cognitive Psychology, Institute of Psychology, Leiden University, Leiden, Netherlands.; Leiden Institute for Brain and Cognition (LIBC), Leiden University, Leiden, Netherlands., Taglialatela J; Ape Cognition and Conservation Initiative, Des Moines, Iowa, United States of America.; Department of Ecology, Evolution, and Organismal Biology, Kennesaw State University, Kennesaw, Georgia, United States of America., Yamamoto S; Institute for Advanced Study, Kyoto University, Kyoto, Japan.; Wildlife Research Center, Kyoto University, Kyoto, Japan.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2024 Aug 21; Vol. 19 (8), pp. e0307975. Date of Electronic Publication: 2024 Aug 21 (Print Publication: 2024).
DOI: 10.1371/journal.pone.0307975
Abstrakt: In a number of species, including humans, perceived outgroup threat can promote ingroup cohesion. However, the distribution and selection history of this association across species with varied intergroup relations remains unclear. Using a sample of 8 captive groups (N = 43 individuals), we here tested whether bonobos, like chimpanzees, show more affiliative ingroup behaviour following perception of outgroup cues (unfamiliar male long-distance vocalisations). We used comparable methods to our previous study of captive chimpanzees, and found that, although weaker, there was an association for more frequent social grooming in response to the outgroup condition than the control condition, alongside more alert posture and increased self-directed behaviour. This provides preliminary evidence for an ancestral origin to the proximate association between outgroup cues and ingroup cohesion, at least prior to the Pan-Homo split, and suggests the presence of intergroup competition in our last common ancestor.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2024 Brooks et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze: MEDLINE
Externí odkaz:
Nepřihlášeným uživatelům se plný text nezobrazuje