Acoustic analysis of vocal development in a New World primate, the common marmoset (Callithrix jacchus)
Acoustic analysis of vocal development in a New World primate, the common marmoset (Callithrix jacchus)
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DOI：
10.1121/1.2225899
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发表时间：
2006-09-01
影响因子：
2.4
通讯作者：
Wang, Xiaoqin
中科院分区：
文献类型：
--
作者：
Pistorio, Ashley L.;Vintch, Brett;Wang, Xiaoqin
与人类和鸣禽相比，非人类灵长类动物的声乐学习证据有限。虽然先前的研究表明，灵长类动物的发声表现出发育变化，但对这种变化在整个物种中的程度和时间过程的详细分析。声乐曲目仍然有限。在一种高度发声的灵长类动物——普通狨猴（Callithrix jacchus）中，我们研究了在社会环境中产生的物种特有的交流声音的声学结构的发育变化。我们对发育过程中绒猴发声的光谱和时间特征进行了详细的声学分析，比较了性别和双胞胎之间的差异，以及生活在同一群体中的成年绒猴发声的差异。我们的分析揭示了光谱和时间特征的显著变化，以及特定呼叫类型随时间的变化。幼猴的发声方式逐渐向成年狨猴的发声方式转变。在发育早期观察到的婴儿特有的叫声类型随着年龄的增长逐渐消失，而与同种动物的声音交流则出现了。我们的观察清楚地表明，狨猴的发声经历了定性和定量的产后变化，为进一步研究发声器官的成熟和行为经验的贡献奠定了基础。(c) 2006年美国声学学会。
In contrast to humans and songbirds, there is limited evidence of vocal learning in nonhuman primates. While previous studies suggested that primate vocalizations exhibit developmental changes, detailed analyses of the extent and time course of such changes across a species'. vocal repertoire remain limited. In a highly vocal primate, the common marmoset (Callithrix jacchus), we studied developmental changes in the acoustic structure of species-specific communication sounds produced in a social setting. We performed detailed acoustic analyses of the spectral and temporal characteristics of marmoset vocalizations during development, comparing differences 'between genders and twin pairs, as well as with vocalizations from adult marmosets residing in the same colony. Our analyses revealed significant changes in spectral and temporal features as well as variability of particular call types over time. Infant and juvenile vocalizations changed progressively toward the vocalizations produced by adult marmosets. Call types observed early in development that were unique to infants disappeared gradually with age, while vocal exchanges with conspecifics emerged. Our observations clearly indicate that marmoset vocalizations undergo both qualitative and quantitative postnatal changes, establishing the basis for further studies to delineate contributions from maturation of the vocal apparatus and behavioral experience. (c) 2006 Acoustical Society of America.