VOCAL ONTOGENY OF CHUCK CALL IN SQUIRREL MONKEYS I PRODUCTION

学习是否有助于声乐的发展 松鼠猴的产量，那么这将代表一个 灵长类动物声音发育与人类声音发育之间重要的相似之处 语音发展，并可能提供第一个非人类灵长类动物 研究人类儿童语言发展的模型。 目标 本研究的主要目的是确定 在非人类灵长类动物中获得发声技能的学习过程。 具体目的是记录声乐作品的发展 查克打电话给松鼠猴 查克把松鼠叫来了 猴子在婴儿和成年人的听觉上是不同的， 主要由成年雌性在亲密关系中产生 互动，这表明了很强的个性化程度，在声学 结构 这些特征表明，学习可能会发挥作用， 在这个发声子系统的成熟中发挥着重要作用。 结果 目前正在进行数据分析。 超过150小时的声乐 记录和400小时的焦点行为数据已经收集。 结果表明，婴儿/青少年松鼠猴表现出社会性， 对特定的无关成年女性的偏好。 社会偏好 是通过婴儿/青少年在 接近，接触，和不同的成年女性的社会挤在一起， 以及活动的数量和方向， 方法，社会探索和发挥，检索，和竞争 交互. 这些数据表明，存在足够的变化 在婴儿的社会偏好中， 影响查克呼叫的发展。 已经有超过3000个chuck的电话了 已经被数字化用于定量声学分析。 初步 比较表明，一些声学特征的查克呼吁， 婴儿从不相关的亲密社会伙伴那里学习。 未来 结合先进的生物声学技术和DNA 指纹识别方法将用于确定声学 这些参数是从那些与生俱来 有松鼠猴发声的倾向 关键词声乐 学习，语言发展，语言进化，生物声学 分析资助NIH NRSA奖学金1-F32-HD 07946

Significance If learning contributes to the development of vocal production in the squirrel monkey, then this will represent an important parallel between primate vocal development and human phonological development and may provide the first nonhuman primate model for studying language development in human children. Objectives The primary objective of this research is to determine the importance of learning in the acquisition of vocal skills in non-human primates. The specific aims are to document the development of vocal production of chuck calls in squirrel monkeys. The chuck call in squirrel monkeys is acoustically different in infants and adults, and is produced primarily by adult females during close affiliative interactions, which shows a strong degree of individuality in acoustic structure. Such characteristics suggest that learning may play an important role in the maturation of this vocal subsystem. Results Data analysis is currently in progress. Over 150 hours of vocal recordings and 400 hours of focal behavioral data have been collected. Results suggest that infant/juvenile squirrel monkeys show social preferences for particular unrelated adult females. Social preference was measured by the amount of time infants/juveniles spent in proximity, contact, and social huddling with different adult females, as well as in the amount and direction of activities such as approaches, social exploration and play, retrievals, and agonistic interactions. These data suggest that sufficient variation exist between infants in their social preferences to evaluate social influences on chuck call development. Over 3000 chuck calls already have been digitized for quantitative acoustic analysis. Preliminary comparison suggests that some acoustic features of chuck calls are learned by infants from unrelated close social associates. Future Directions A combination of advanced bioacoustic techniques and DNA fingerprinting methods will be used to determine the acoustic parameters that are learned from those that are more innately predisposed in squirrel monkey vocalizations. KEY WORDS vocal learning, language development, evolution of language, bioacoustic analysis FUNDING NIH NRSA Fellowship 1-F32-HD07946