Within-Population Variations in Home Range Use and Food Patch Use of Japanese Macaques: A Perspective of Intergroup Hostility

Within-Population Variations in Home Range Use and Food Patch Use of Japanese Macaques: A Perspective of Intergroup Hostility
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日本猕猴的家庭范围使用和食物补丁使用的种群内差异:群体间敌意的视角

DOI:
10.1159/000493574
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发表时间:
2018
影响因子:
1.9
通讯作者:
Hanya Goro
Hanya Goro
中科院分区:
生物学4区
文献类型:
--
作者:
Kurihara Yosuke;Hanya Goro

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尽管群间进食竞争对于群体生活的好处很重要,但其行为机制仍不清楚。日本屋久岛沿海和高原森林中的日本猕猴是理想的研究对象,因为群间觅食竞争的强度不同,但没有系统发育影响。我们的目的是测试猕猴是否会改变家庭活动范围和食物斑块的使用,以应对群体间相遇的特定地点风险。使用来自 3 组的行为数据,我们检查了边界回避以及食物块位置对食物块使用的影响。所有 3 个团体使用边界的频率都低于其所在地区的预期。在以频繁的群体间攻击为特征的沿海森林中,较小的从属群体,而不是较大的优势群体,增加了边界沿线共同进食个体的数量。这种反应可能会减少群体间攻击的潜在成本。两组的食物块中的喂养持续时间、视觉扫描以及与成年雄性的共同喂养并不取决于食物块的位置。相比之下,由于群体间相遇的风险较低,高地群体没有改变边境沿线食品田的使用。我们的结果强调了群体间敌意作为影响动物行为的社会因素的重要性。
Behavioral mechanisms of intergroup feeding competition remain unclear, despite its importance as a benefit of group living. Japanese macaques in the coastal and highland forests of Yakushima, Japan, are ideal study subjects because the intensity of intergroup feeding competition differs without phylogenetic effects. We aimed to test whether macaques modify home range use and food patch use in response to the location-specific risk of intergroup encounters. Using behavioral data from 3 groups, we examined the border avoidance and the effects of food patch location on food patch use. All 3 groups used the border less frequently than expected from its area. In the coastal forest characterized by frequent intergroup aggression, the smaller subordinate group, not the larger dominant group, increased the number of co-feeding individuals along the border. This response might reduce the potential costs of intergroup aggression. Feeding duration in one patch, visual scanning, and co-feeding with adult males did not depend on food patch location for the 2 groups. In contrast, the highland group did not modify food patch use along the border owing to the low risk of intergroup encounters. Our results highlight the importance of intergroup hostility as a social factor affecting animal behavior.
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