Idiosyncrasy in Multimodal Gestural Communication: A Case Study of Hand‐Clapping in a Barbary Macaque (Macaca sylvanus)
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Wiley
2025
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| author | Tiffany Claire Bosshard Marie Hirel Hélène Meunier Julia Fischer |
| author_facet | Tiffany Claire Bosshard Marie Hirel Hélène Meunier Julia Fischer Tiffany Claire Bosshard Marie Hirel Hélène Meunier Julia Fischer |
| collection | Wiley Open Access |
| contents | Idiosyncrasy in Multimodal Gestural Communication: A Case Study of Hand‐Clapping in a Barbary Macaque (Macaca sylvanus) Tiffany Claire Bosshard Marie Hirel Hélène Meunier Julia Fischer Ethology ABSTRACTWhile it is well established that apes invent or individually learn new gestures, cases of development and use of novel gestures in monkeys are more rarely described. We report a case of a novel, idiosyncratic gesture in a Barbary macaque (Macaca sylvanus) at ‘La Forêt des Singes’, Rocamadour, France. One adult male, Jomanix, was observed hand‐clapping. To our knowledge, hand‐clapping has never been described before in this species. To hand‐clap, the male briefly shifted his weight onto his legs, lifted his upper body, and clapped both hands together. We recorded 30 instances of hand‐clapping. Twenty‐five of these hand‐claps occurred in combination with other agonistic signals, such as lunges and open mouth threats. Recipients either responded with counter‐aggression (N = 9) or a submissive response (N = 16). In five of the 30 events, the context was unclear. These observations suggest that the gesture constitutes an agonistic signal. According to the staff at ‘La Forêt des Singes’, the hand‐clapping may have been copied from staff members who occasionally hand‐clap to shoo the animals away from areas where they were not supposed to be but that notion remains speculative. In the meantime, another subject from the same group reportedly started to hand‐clap but the subject had passed away before we could document the behaviour. The observations show that Jomanix can flexibly combine a novel gesture with other established communicative signals. The hand‐clap is goal‐directed and fulfils the criteria for first‐order intentional communication. This case, as well as anecdotal reports from a Tonkean macaque (Macaca tonkeana) hand‐clapping to get attention, reveals greater flexibility in the gestural communication of this genus than previously assumed but also underscores that social learning of the production of communicative gestures occurs rarely in this taxon. 10.1111/eth.13556 http://creativecommons.org/licenses/by/4.0/ |
| doi_str_mv | 10.1111/eth.13556 |
| format | Artículo Open Access |
| id | wiley_oa_10_1111_eth_13556 |
| institution | Wiley Open Access |
| license_str_mv | http://creativecommons.org/licenses/by/4.0/ |
| publishDate | 2025 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Idiosyncrasy in Multimodal Gestural Communication: A Case Study of Hand‐Clapping in a Barbary Macaque (Macaca sylvanus) Tiffany Claire Bosshard Marie Hirel Hélène Meunier Julia Fischer Ethology Idiosyncrasy in Multimodal Gestural Communication: A Case Study of Hand‐Clapping in a Barbary Macaque (Macaca sylvanus) Tiffany Claire Bosshard Marie Hirel Hélène Meunier Julia Fischer Ethology ABSTRACTWhile it is well established that apes invent or individually learn new gestures, cases of development and use of novel gestures in monkeys are more rarely described. We report a case of a novel, idiosyncratic gesture in a Barbary macaque (Macaca sylvanus) at ‘La Forêt des Singes’, Rocamadour, France. One adult male, Jomanix, was observed hand‐clapping. To our knowledge, hand‐clapping has never been described before in this species. To hand‐clap, the male briefly shifted his weight onto his legs, lifted his upper body, and clapped both hands together. We recorded 30 instances of hand‐clapping. Twenty‐five of these hand‐claps occurred in combination with other agonistic signals, such as lunges and open mouth threats. Recipients either responded with counter‐aggression (N = 9) or a submissive response (N = 16). In five of the 30 events, the context was unclear. These observations suggest that the gesture constitutes an agonistic signal. According to the staff at ‘La Forêt des Singes’, the hand‐clapping may have been copied from staff members who occasionally hand‐clap to shoo the animals away from areas where they were not supposed to be but that notion remains speculative. In the meantime, another subject from the same group reportedly started to hand‐clap but the subject had passed away before we could document the behaviour. The observations show that Jomanix can flexibly combine a novel gesture with other established communicative signals. The hand‐clap is goal‐directed and fulfils the criteria for first‐order intentional communication. This case, as well as anecdotal reports from a Tonkean macaque (Macaca tonkeana) hand‐clapping to get attention, reveals greater flexibility in the gestural communication of this genus than previously assumed but also underscores that social learning of the production of communicative gestures occurs rarely in this taxon. 10.1111/eth.13556 http://creativecommons.org/licenses/by/4.0/ |
| title | Idiosyncrasy in Multimodal Gestural Communication: A Case Study of Hand‐Clapping in a Barbary Macaque (Macaca sylvanus) |
| topic | Ethology |
| url | https://onlinelibrary.wiley.com/doi/10.1111/eth.13556 |