Isochrony in titi monkeys duets: social context as a proximate cause of duets' rhythm and regularity.

IF 3.8 1区 生物学 Q1 BIOLOGY
Chiara De Gregorio, Paola Antonini, Eckhard W Heymann, Marco Gamba
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引用次数: 0

Abstract

Music and rhythm are typical features of all human cultures, but their biological origins remain unclear. Recent investigations suggest that rhythmic features of human music are shared with animal vocalizations. Moreover, arousal is known to influence the structure of both human speech and animal sounds. We investigated coppery titi monkeys' (Plecturocebus cupreus) duet rhythms to assess adherence to rhythmic patterns previously observed only in Old World primates and to deepen our understanding of the proximate causes of non-human primate song rhythm. Titis' songs were remarkably isochronous, but their tempo depended on the social context: songs sung during territorial confrontations have a slower pace than during early morning singing. Songs had a faster tempo and were less regular when infants were present, suggesting a speed-accuracy trade-off. Finally, we found that pair-mates perform isochronous songs with the same precision, suggesting that isochrony plays a role in boosting pair coordination, as it does in other singing primates. Our investigation sheds light on the ultimate and proximate causes of primates' isochronous rhythm, to our knowledge confirming its presence for the first time in a New World monkey and highlighting the role of social factors in shaping its timing and regularity in the short term.

猴子二重唱的等时性:社会背景是二重唱节奏和规律的直接原因。
音乐和节奏是所有人类文化的典型特征,但它们的生物学起源尚不清楚。最近的研究表明,人类音乐的节奏特征与动物的发声是相同的。此外,人们还知道,觉醒会影响人类语言和动物声音的结构。我们研究了铜titi猴(Plecturocebus cupreus)的二重唱节奏,以评估其是否遵循先前仅在旧大陆灵长类动物中观察到的节奏模式,并加深我们对非人灵长类动物歌曲节奏的近似原因的理解。提提斯的歌声明显是同步的,但它们的节奏取决于社会环境:在领土冲突期间唱的歌比清晨唱的歌慢。当婴儿在场时,歌曲的节奏更快,节奏也不那么规律,这表明了速度和准确性之间的权衡。最后,我们发现,伴侣们以同样的精度演唱等时歌曲,这表明等时在促进伴侣协调方面发挥着作用,就像其他会唱歌的灵长类动物一样。我们的研究揭示了灵长类动物等时节律的最终和近似原因,据我们所知,首次在新大陆的猴子身上证实了它的存在,并强调了社会因素在短期内塑造其时间和规律性方面的作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.90
自引率
4.30%
发文量
502
审稿时长
1 months
期刊介绍: Proceedings B is the Royal Society’s flagship biological research journal, accepting original articles and reviews of outstanding scientific importance and broad general interest. The main criteria for acceptance are that a study is novel, and has general significance to biologists. Articles published cover a wide range of areas within the biological sciences, many have relevance to organisms and the environments in which they live. The scope includes, but is not limited to, ecology, evolution, behavior, health and disease epidemiology, neuroscience and cognition, behavioral genetics, development, biomechanics, paleontology, comparative biology, molecular ecology and evolution, and global change biology.
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