INTERGROUP ENCOUNTERS AND FEMALE TRANSFER IN MOUNTAIN GORILLAS - INFLUENCE OF GROUP COMPOSITION ON MALE-BEHAVIOR
INTERGROUP ENCOUNTERS AND FEMALE TRANSFER IN MOUNTAIN GORILLAS - INFLUENCE OF GROUP COMPOSITION ON MALE-BEHAVIOR
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DOI：
10.1002/ajp.1350300103
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发表时间：
1993-01-01
影响因子：
2.4
通讯作者：
SICOTTE, P
中科院分区：
文献类型：
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作者：
SICOTTE, P
本文研究了雄性大猩猩(G.Gorilla beringei)在群际相遇时影响雌性选择的行为。相遇与获得雌性有关，而不是与保卫一群人的射程有关。58次独立遭遇的数据证实，遭遇通常是攻击性的，但接触攻击性的频率比之前报告的要低。在参与其中的一个群体中，潜在移民的数量较多，而不是任何一个群体的新鲜度，这预示着男性之间接触攻击的可能性。与新组建的部队相遇的时间比与老牌部队相遇的时间更长。雄性羊群的作用是防止雌性转移。没有依赖后代的雌性比其他雌性更有可能被从众。前倾的雌性比不前倾的骑自行车的雌性更容易成为群居的目标。观察到群居的群体更有可能是新形成的，而且他们包括明显更多的雄性。这最后的结果证实了大猩猩的雄性合作是有优势的。它还提出了一个问题，即为什么这种合作没有更频繁地发生。
This paper examines the behaviors used by male gorillas (G. gorilla beringei) to influence female choice during inter-group encounters. Encounters are related to the acquisition of females rather than to the defense of a group's range. Data on 58 independent encounters confirms that encounters are generally aggressive, but that contact aggression is less frequent than previously reported. A high number of potential migrants in one of the groups involved, rather than the newness of either group, predicts the likelihood of contact aggression between males. Encounters with a newly formed unit last longer than encounters involving established groups. Male herding serves to prevent female transfer. Females without dependent offspring are more likely than others to be herded. Proceptive females are the target of herding more often than non-proceptive cycling females. Groups where herding has been observed are more likely to be newly formed, and they include significantly more males. This last result confirms that there are advantages to male cooperation in gorillas. It also raises the question of why such cooperation does not occur more often.