鸣叫是长臂猿一个非常显著的特征。所有的成年长臂猿都能发出响亮的鸣叫。这种鸣叫具有种间的特异性，有一定的固定模式，能传播很远的距离，因此常常被形容为“歌唱”。除了克氏长臂猿（Hylobates klossii)和银灰长臂猿(H.moloch)之外的所有长臂猿都会由雌雄默契配合进行“二重唱”。二重唱结构复杂，功能多样，是长臂猿研究中非常引人注目的一个方面。配对的西黑冠长臂猿(Nomascus concolor)的二重唱结构稳定，由雄性主导，而且有着极高的雌雄特异性--两性的鸣叫不论在音调还是音节上都没有任何重叠。尽管长臂猿的鸣叫是由基因决定的，每种长臂猿都有其固定的鸣叫模式，但是随着环境的变化，其鸣叫也会表现出一定的可塑性，这就会体现在其个体的差异上。兽类生态与进化研究组的孙国政博士在导师蒋学龙研究员的指导下，对哀牢山平河以及无量山大寨子这两个研究地点的八个黑长臂猿群体中的成年雄性鸣叫特征进行了研究对比，结果发现：同一地点的群体鸣叫特异性很高，可以很容易地与相邻群体区别开来。并且同一地点雄性长臂猿的鸣叫个体特异性高于两个研究地点之间的不同群体间的特异性。这就说明，为了与相邻群体区别开来，雄性黑长臂猿会积极地进行声音调节，来提高其在当地的声音特异性。这是首个在黑长臂猿群体中进行的声音特异性研究，填补了以往黑长臂猿声音研究的空白（生物谷Bioon.com）
生物谷推荐原文出处：
American Journal of Primatology DOI: 10.1002/ajp.20917
Individuality in male songs of wild black crested Gibbons (Nomascus concolor)
Guo-Zheng Sun1,2, Bei Huang1,2, Zhen-Hua Guan1,2, Thomas Geissmann3, Xue-Long Jiang1
Keywords:Nomascus concolor;male song;individuality;individual identification;vocal adjustment
Abstract
This is the first study of vocal individuality in male songs of black crested gibbons. The sound recordings were carried out at two field sites, Pinghe, Ailao Mountains, and Dazhaizi, Wuliang Mountains, both located in Yunnan province, China. A total of 127 coda phrases of 38 male songs bouts of eight individual male gibbons were analyzed. Stepwise discriminant function analysis was used to examine the acoustic individuality of the males. We found that individuality among neighbors was very pronounced. Moreover, individuality within a site (i.e. among neighbors) is higher than among individuals between sites. Our finding suggests that black crested gibbons may actively increase their degree of vocal individuality against that of their immediate neighbors by vocal adjustment. Am. J. Primatol. 71:1–8, 2010. ? 2010 Wiley-Liss, Inc.
