Lemasson Alban, Gautier Jean-Pierre, Hausberger Martine
UMR 6552-CNRS, Ethologie-Evolution-Ecologie, université Rennes-1, campus de Beaulieu, 35042 Rennes, France.
C R Biol. 2003 Dec;326(12):1185-93. doi: 10.1016/j.crvi.2003.10.005.
This study examined variations of social call structures in female Campbell's monkeys. The comparison of frequency modulations using a similarity index revealed that each individual presented one to three variants. Some variants were shared by two to several individuals, often associated with play. On the contrary, vocal divergence was observed in a socially isolated animal and a negative correlation appeared between similarity index and the frequency of avoidance. This preliminary study gives the first evidence of variant sharing between group members in primates.
本研究考察了雌性坎贝尔猴社交叫声结构的变化。使用相似性指数对频率调制进行比较后发现，每只个体呈现出一到三种变体。有些变体为两到几只个体所共有，且常常与玩耍相关。相反，在一只社交孤立的动物身上观察到了叫声差异，并且相似性指数与回避频率之间呈现出负相关。这项初步研究首次证明了灵长类动物群体成员之间存在变体共享。
