Hending Dan, Holderied Marc, McCabe Grainne
School of Biological Sciences, The University of Bristol, Bristol, BS8 1TH UK.
Bristol Zoological Society, Clifton, Bristol, BS8 3HA UK.
Int J Primatol. 2017;38(4):732-750. doi: 10.1007/s10764-017-9977-6. Epub 2017 Jul 19.
Primate vocalizations convey a variety of information to conspecifics. The acoustic traits of these vocalizations are an effective vocal fingerprint to discriminate between sibling species for taxonomic diagnosis. However, the vocal behavior of nocturnal primates has been poorly studied and there are few studies of their vocal repertoires. We compiled a vocal repertoire for the Endangered Sambirano mouse lemur, , an unstudied nocturnal primate of northwestern Madagascar, and compared the acoustic properties of one of their call types to those of and . We recorded vocalizations from radio-collared individuals using handheld recorders over 3 months. We also conducted an acoustic survey to measure the vocal activity of in four forest habitat types at the study site. We identified and classified five vocalization types in . The vocal repertoires of the three species contain very similar call types but have different acoustic properties, with one loud call type, the whistle, having significantly different acoustic properties between species. Our acoustic survey detected more calls of in secondary forest, riparian forest, and forest edge habitats, suggesting that individuals may prefer these habitat types over primary forest. Our results suggest interspecific differences in the vocal repertoire of mouse lemurs, and that these differences can be used to investigate habitat preference via acoustic surveys.
灵长类动物的发声向同种个体传达各种信息。这些发声的声学特征是区分亲缘物种以进行分类诊断的有效声学指纹。然而，夜行性灵长类动物的发声行为研究较少，对其发声 repertoire 的研究也很少。我们为濒危的桑比拉诺鼠狐猴（一种马达加斯加西北部未被研究过的夜行性灵长类动物）编制了发声 repertoire，并将其一种叫声类型的声学特性与[未提及的两种物种]的进行了比较。我们使用手持录音机在3个月内记录了佩戴无线电项圈个体的发声。我们还进行了一项声学调查，以测量研究地点四种森林栖息地类型中[未提及的物种]的发声活动。我们在[未提及的物种]中识别并分类了五种发声类型。这三种[未提及的物种]的发声 repertoire 包含非常相似的叫声类型，但具有不同的声学特性，其中一种大声的叫声类型，即哨声，在物种之间具有显著不同的声学特性。我们的声学调查在次生林、河岸林和林缘栖息地检测到更多[未提及的物种]的叫声，这表明个体可能比原始森林更喜欢这些栖息地类型。我们的结果表明鼠狐猴发声 repertoire 存在种间差异，并且这些差异可用于通过声学调查研究栖息地偏好。
