Social uncertainty promotes signal complexity during approaches in wild chimpanzees ( Pan troglodytes verus ) and mangabeys ( Cercocebus atys atys ).

Autor:	Grampp M; The Ape Social Mind Laboratory, Institut des Sciences Cognitives, CNRS UMR 5229, Bron, France.; Department of Human Behaviour, Ecology and Culture, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.; Taï Chimpanzee Project, Centre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire., Samuni L; Taï Chimpanzee Project, Centre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire.; Department of Human Evolutionary Biology, Harvard University, Cambridge, MA, USA.; School of Psychology and Neuroscience, University of St Andrews, St Andrews, UK.; Cooperative Evolution Laboratory, German Primate Center, Göttingen, Germany., Girard-Buttoz C; The Ape Social Mind Laboratory, Institut des Sciences Cognitives, CNRS UMR 5229, Bron, France.; Department of Human Behaviour, Ecology and Culture, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.; Taï Chimpanzee Project, Centre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire., León J; Taï Monkey Project, Centre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire.; Institute of Biology, University of Neuchâtel, Neuchatel, Switzerland., Zuberbühler K; Taï Monkey Project, Centre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire.; Institute of Biology, University of Neuchâtel, Neuchatel, Switzerland., Tkaczynski P; Taï Chimpanzee Project, Centre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire.; School of Biological & Environmental Sciences, Liverpool John Moores University, Liverpool, UK., Wittig RM; The Ape Social Mind Laboratory, Institut des Sciences Cognitives, CNRS UMR 5229, Bron, France.; Department of Human Behaviour, Ecology and Culture, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.; Taï Chimpanzee Project, Centre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire., Crockford C; The Ape Social Mind Laboratory, Institut des Sciences Cognitives, CNRS UMR 5229, Bron, France.; Department of Human Behaviour, Ecology and Culture, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.; Taï Chimpanzee Project, Centre Suisse de Recherches Scientifiques, Abidjan, Côte d'Ivoire.
Jazyk:	angličtina
Zdroj:	Royal Society open science [R Soc Open Sci] 2023 Nov 29; Vol. 10 (11), pp. 231073. Date of Electronic Publication: 2023 Nov 29 (Print Publication: 2023).
DOI:	10.1098/rsos.231073
Abstrakt:	The social complexity hypothesis for the evolution of communication posits that complex social environments require greater communication complexity for individuals to effectively manage their relationships. We examined how different socially uncertain contexts, reflecting an increased level of social complexity, relate to variation in signalling within and between two species, which display varying levels of fission-fusion dynamics (sympatric-living chimpanzees and sooty mangabeys, Taï National Park, Ivory Coast). Combined signalling may improve message efficacy, notably when involving different perception channels, thus may increase in moments of high social uncertainty. We examined the probability of individuals to emit no signal, single or multisensory or combined (complex) signals, during social approaches which resulted in non-agonistic outcomes. In both species, individuals were more likely to use more combined and multisensory signals in post-conflict approaches with an opponent than in other contexts. The clearest impact of social uncertainty on signalling complexity was observed during chimpanzee fusions, where the likelihood of using complex signals tripled relative to other contexts. Overall, chimpanzees used more multisensory signals than mangabeys. Social uncertainty may shape detected species differences in variation in signalling complexity, thereby supporting the hypothesis that social complexity, particularly associated with high fission-fusion dynamics, promotes signalling complexity. Competing Interests: We declare we have no competing interests. (© 2023 The Authors.)
Databáze:	MEDLINE
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