Food and range defence in group-living primates
Food and range defence in group-living primates
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DOI：
10.1016/j.anbehav.2013.01.027
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发表时间：
2013-04-01
期刊：
影响因子：
2.5
通讯作者：
Brown, Michelle
中科院分区：
文献类型：
--
作者：
Brown, Michelle
为什么一些灵长类动物群体主要在领土边界争夺食物资源（外围防御），而其他灵长类动物群体更有可能在家园范围的中心争夺资源（核心防御）？一种可能性是，中心地区拥有更多的食物资源，因此对核心防御群体更重要，而外围地区对保卫领土边界的群体更有价值。我在乌干达Kibale国家公园的Ngogo遗址，通过分析六组灰颊白眉猴（Lophocebus albigena）和六组红尾猴（Cercopithecus ascanius）在家庭活动范围内的资源分布和群体间的攻击性互动，验证了这一假设。在本研究中，白眉猴和尾猴都没有表现出核心防御或边界防御；相反，这两个物种似乎都在保卫离散的觅食地点，无论是核心区域还是外围区域，都没有持续地含有更多的食物。我还比较了经常用于表征灵长类动物食物可用性的变量（相互作用地点的摄食价值与食物丰度、分布和斑块大小），以确定它们在预测攻击性食物防御方面是否同样准确。场地摄食强度预测红尾猴的攻击性，而雄白眉猴的攻击性与资源的丰度和分布相关。这些结果表明了测试食物可得性的多个方面的重要性，这在不同的灵长类动物种群中可能具有不同的重要性。最后，我提出了一个群居灵长类动物食物和范围防御的新模型，该模型预测了各种食物特征与核心、斑块和外围防御之间的具体关系。(C) 2013动物行为研究协会。Elsevier Ltd.出版。版权所有。
Why do some primate groups contest access to food resources primarily at territorial borders (periphery defence), whereas others are more likely to contest resources in the centre of the home range (core defence)? One possibility is that central areas contain more food resources and so are more important for core-defending groups, whereas peripheral areas are more valuable for groups that defend territorial boundaries. I tested this hypothesis by analysing the distribution of resources in home ranges and aggressive intergroup interactions for six groups of grey-cheeked mangabeys, Lophocebus albigena, and six groups of redtail monkeys, Cercopithecus ascanius, at the Ngogo site in Kibale National Park, Uganda. Neither mangabeys nor redtails exhibited core or boundary defence in this study; instead, both species appeared to defend discrete feeding sites, and neither the core nor peripheral home range areas consistently contained greater quantities of food. I also compared variables that are frequently used to characterize primate food availability (the feeding value of the interaction site versus food abundance, distribution and patch size) to determine if they are equally accurate in predicting aggressive food defence. Whereas site feeding intensity predicted aggression by redtails, aggression by mangabey males correlated with the abundance and distribution of resources. These results demonstrate the importance of testing multiple aspects of food availability, which can vary in importance among different primate populations. I conclude by proposing a new model of food and range defence in group-living primates that predicts specific relationships between various food characteristics and core, patch and periphery defence. (C) 2013 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.