USE OF TRILL VOCALIZATIONS TO COORDINATE TROOP MOVEMENT AMONG WHITE-FACED CAPUCHINS - A 2ND FIELD-TEST
USE OF TRILL VOCALIZATIONS TO COORDINATE TROOP MOVEMENT AMONG WHITE-FACED CAPUCHINS - A 2ND FIELD-TEST
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DOI：
10.1163/156853995x00054
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发表时间：
1995-09-01
期刊：
影响因子：
1.3
通讯作者：
CAMPBELL, AF
中科院分区：
文献类型：
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作者：
BOINSKI, S;CAMPBELL, AF
白脸卷尾猴Cebus Capucinus在哥斯达黎加的大西洋雨林研究地点La Selva使用了一种特殊的发声-颤音-来协调部队的移动。我们分析了这种组内发声的背景，包括从其他组成员引起的反应。来自16个焦点受试者的研究团队分析了累计26.6小时的连续样本和3314个光谱图(包括1295个颤动)。这些结果基本上证实了在哥斯达黎加太平洋海岸干燥森林地点圣罗莎对T白面卷尾猴进行的可比野外研究的结论(BOINSKI，1993，Amer.J.Primatol。30，第85-100页)。在这两个地点，(1)颤音与一支固定的部队开始向特定方向移动密切相关。(2)行军前沿的颤音比行军后的高得多。(3)个人经常加强其他部队成员协调部队行动的努力。(4)显然，部队成员对旅行路线缺乏共识。(5)在极少数情况下，颤音被用于暗示意向性和预测行为影响的能力的战术动作中。在这两个地点使用颤音的情况也有所不同。(1)在La Selva，除婴儿外，所有部队成员都使用颤音协调部队调动，而在Santa Rosa，明显存在参与程度上的年龄、性别和军衔差异。(2)圣罗莎的卡布钦人用颤音改变了行军的轨迹，甚至颠倒了方向，但在拉塞尔瓦却没有。这些差异可能源于不同地点在部队成员之间典型的视觉和听觉接触程度、社会结构、对捕食的易感性以及可能的遗传变异方面的差异。
The white-faced capuchin, Cebus capucinus, employed a specialized vocalization, the trill, to coordinate troop movement at La Selva, an Atlantic wet-forest study site in Costa Rica. We analyse the contexts in which this intra-group vocalization was emitted, including responses elicited from other group members. A cumulative 26.6 hours of continuous samples and 3,314 spectrograms (including 1,295 trills) were analysed from a study troop with 16 focal subjects. These results generally corroborate the conclusions of a comparable field study of T white-faced capuchins at Santa Rosa, a Pacific coast dry-forest site in Costa Rica(BOINSKI, 1993, Amer. J. Primatol. 30, p. 85-100). At both sites, (1) trills were closely associated with the initiation of movement by a stationary troop in a specific direction. (2) Trills were emitted at a much higher rate in the leading edge of a travelling troop than in following positions. (3) Individuals often reinforced the efforts of other troop members to coordinate troop movement. (4) Lack of consensus among troop members over the travel route was evident. (5) In rare instances trills were employed in tactical maneuvers suggestive of intentionality and the ability to anticipate behavioural effects. Differences in the usage of trills at these two sites were also detected. (1) At La Selva all troop members, with the exception of infants, used trills in the coordination of troop movement, whereas at Santa Rosa marked age, sex and rank distinctions in the extent of participation were apparent. (2) Capuchins at Santa Rosa altered the trajectory of travelling troops with trills, even reversing directions, but not at La Selva. These disparities may follow from differences between the sites in the extent of visual and auditory contact typical among troop members, social structure, susceptibility to predation, and possible genetic variation.