Social and individual factors mediate chimpanzee vocal ontogeny

被引:0
|
作者
Soldati, Adrian [1 ,2 ,3 ]
Fedurek, Pawel [4 ]
Dezecache, Guillaume [5 ]
Muhumuza, Geresomu [6 ]
Hobaiter, Catherine [2 ,6 ]
Zuberbuehler, Klaus [2 ,3 ,6 ]
Call, Josep [2 ]
机构
[1] Univ Zurich, Dept Evolutionary Anthropol, Zurich, Switzerland
[2] Univ St Andrews, Sch Psychol & Neurosci, St Andrews, Scotland
[3] Univ Neuchatel, Dept Comparat Cognit, Neuchatel, Switzerland
[4] Univ Stirling, Div Psychol, Stirling, Scotland
[5] Univ Paris Saclay, UMI SOURCE, UVSQ, IRD, Guyancourt, France
[6] Budongo Conservat Field Stn, Masindi, Uganda
来源
SCIENTIFIC REPORTS | 2025年 / 15卷 / 01期
基金
瑞士国家科学基金会;
关键词
WILD CHIMPANZEES; HUMAN SPEECH; LANGUAGE; EVOLUTION; CALLS; COMMUNICATION; VOCALIZATIONS; BIRDSONG; CONTEXTS; BEHAVIOR;
D O I
10.1038/s41598-025-93207-x
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Human language develops in social interactions. In other ape species, the role of social learning in vocal ontogeny can be typically underappreciated, mainly because it has received little empirical attention. Here, we examine the development of pant hoot vocalisations during vocal exchanges in immature wild chimpanzees (Pan troglodytes schweinfurthii) of the Sonso community of the Budongo Forest, Uganda. We investigated how maternal gregariousness, age, sex, and social context are associated with behavioural and vocal responses to other group members' calls. We show that the older sons of gregarious mothers are more likely to orient their attention, respond vocally to the calls of others, and are overall more exposed to others' calls compared to other immature individuals. This effect is strongest in the presence of adult males and when their mothers also respond vocally, suggesting that chimpanzee vocal development is enhanced by social and vocal exposure. Our findings are consistent with a more flexible and socially mediated chimpanzee vocal ontogeny than previously assumed and show some parallels with animal vocal learners and children language acquisition.
引用
收藏
页数:14
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