Chuck vocalizations of wild female squirrel monkeys (Saimiri sciureus) contain information on caller identity and foraging activity
Chuck vocalizations of wild female squirrel monkeys (Saimiri sciureus) contain information on caller identity and foraging activity
复制标题
DOI：
10.1023/a:1026300314739
复制
发表时间：
1997-12-01
影响因子：
2.5
通讯作者：
Mitchell, CL
中科院分区：
文献类型：
--
作者：
Boinski, S;Mitchell, CL
在秘鲁国家公园的成年雌性松鼠猴（Saimiri sciureus）的卡盘发声的声学信号的分析，揭示了一致的差异内和个体之间。我们量化了四个峰值频率参数：（a）单卡盘的峰值频率，（B）双卡盘的第一和第二峰值频率，以及（d）峰值差：第一和第二双卡盘峰值之间的差。这些变量的单因素方差分析和后验比较显示，每个区别超过70%的所有可能的女性对。当所有的双夹头措施包括在判别分析中，57%的双夹头被正确分配给呼叫者。另一类信息可能编码在卡盘发声的声学结构中是觅食活动。当松鼠猴在觅食和非觅食活动的卡盘相比，单卡盘的峰值频率，第一峰值频率和双卡盘的峰值差，在觅食的情况下显着降低。Boinski和Mitchell在1992年得出的结论是，通过提供呼叫者的位置信息，chuck促进了广泛分散的部队成员之间的群体凝聚力;成年女性在空间和视觉上与其他成年女性分开时，chuck的比例会增加。在这些新的分析中记录的关于呼叫者身份和觅食活动的额外信息进一步强调了chuck在增强群体协调和凝聚力方面的作用。
Analysis of the acoustic signal of the chuck vocalizations of adult female squirrel monkeys (Saimiri sciureus) in Parque Nacional de Manu, Peru, revealed consistent differences within and between individuals. We quantified four peak frequency parameters: (a) the peak frequency of single chucks, (b) the first and (c) the second peak frequencies of double chuck, and (d) the peak difference: the difference between the first and the second double chuck peaks. One-way ANOVAs and a posteriori comparisons of these variables revealed that each distinguished more than 70% of all possible pairs of females. When all double chuck measures were included in a discriminant analysis, 57% of double chuck were correctly assigned to the caller. Another category of information potentially encoded in the acoustic structure of chuck vocalizations is foraging activity. When the chuck of squirrel monkeys during foraging and nonforaging activities were compared, the single chuck peak frequency, and the first peak frequency and the peak difference of double chucks, were significantly reduced during foraging contexts. Previously Boinski and Mitchell (1992) concluded that chuck facilitate group cohesion among widely dispersed troop members by providing information of the location of callers; the rate of chuck produced by an adult female increases as she becomes more spatially and visually separated from other adult females. The additional information potentially conveyed by chucks on caller identity and foraging activity documented in these new analyses further emphasizes the role chuck serve to enhance group coordination and cohesion.