VOCAL COMMUNICATION IN A WILD PRIMATE SPECIES

这个子项目是许多研究子项目中的一个 由NIH/NCRR资助的中心赠款提供的资源。子项目及 研究者（PI）可能从另一个NIH来源获得了主要资金， 因此可以在其他CRISP条目中表示。所列机构为 研究中心，而研究中心不一定是研究者所在的机构。 目的：研究野生侏儒狨猴（Cebuellapygmaea）发声交流和发声发育的种群差异。 在非人类灵长类动物的叫声中，几乎没有声音可塑性的证据。然而，野生灵长类动物的声音交流研究者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盆地的五个侏儒绒猴种群。我们发现，在纠正个体差异后，每个种群的长叫声和颤音结构存在显着差异。这是第一个非供应猴子声音结构变异的证据（排除了人类干预作为变化来源）。我们还详细测量了环境噪声以及每个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喂养的树种的人口变化，可以反驳这种变化的几个生态假说。这表明，社会学习可能占渗出物喂养偏好的人口差异。此外，我们正在研究幼年绒猴的“牙牙学语”，以了解更多关于声音发展的信息，我们正在研究捕食者的警报声。本研究使用WNPRC图书馆和信息服务。 在本报告所述期间之前结束了供资;出版了一份出版物。

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. Objective: To study population differences in vocal communication and vocal development in wild pygmy marmosets (Cebuella pygmaea). There has been little evidence of vocal plasticity in nonhuman primate calls. However, investigators 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 have found that 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. This suggests 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. Funding ended before this reporting period; a publication has resulted.