VOCAL COMMUNICATION IN A WILD PRIMATE SPECIES

本子项目是利用由NIH/NCRR资助的中心赠款提供的资源的众多研究子项目之一。子项目和研究者（PI）可能已经从另一个NIH来源获得了主要资金，因此可以在其他CRISP条目中表示。列出的机构是中心的，不一定是研究者的机构。目的：研究野生侏儒狨猴在声音交流和声音发育方面的种群差异。几乎没有证据表明非人类灵长类动物的叫声具有声音可塑性。然而，对野生灵长类动物发声交流的研究很少研究一个以上的种群，因此发声的潜在差异可能并不明显。我们正在研究厄瓜多尔东部亚马逊河上游流域的五个侏儒狨猴种群。在对个体差异进行校正后，我们发现在每个种群中，长叫声和颤音的结构存在显著差异。这是第一个证据表明，在没有提供食物的猴子中，声音结构的变化（排除了人类干预作为变化来源的可能性）。我们还详细测量了环境噪音，以及每种栖息地的声音是如何退化的，并发现叫声结构的一些差异可能与栖息地的差异有关。我们还发现了用于分泌物取食的树种的种群差异，并可以反驳这种差异的几个生态学假设，表明社会学习可能解释了种群在分泌物取食偏好方面的差异。此外，我们正在研究年幼的狨猴婴儿的“咿呀学语”，以了解更多关于声音发育的知识，我们正在研究捕食者的警报呼叫。本研究使用WNPRC图书馆信息服务。

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. To study population differences in vocal communication and vocal development in wild pygmy marmosets. There has been little evidence of vocal plasticity in calls of nonhuman primates. However, studies of vocal communication in wild primates have rarely studied more than one population and thus potential differences in vocalization may not be evident. We are studying five populations of pygmy marmosets in the upper Amazon basin in Eastern Ecuador. We have found significant differences in the structure of long -calls, and trills in each population, after correcting for individual differences. This is the first evidence of variability in vocal structure in non-provisioned monkeys (ruling out human intervention as a source of change). We have also made detailed measurements of environmental noise and how sounds are degraded in each of the habitats and find some of the differences in call structure can be related to habitat differences. We have also found population variation in the species of trees used for exudate feeding and can refute several ecological hypotheses for this variation, suggesting that social learning may account for population differences in exudate feeding preferences. In addition we are studying the "babbling" of young infant marmosets to learn more about vocal development, and we are studying predator alarm calls. This research used WNPRC Library and Information Services.