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首页> 外文期刊>American Journal of Physical Anthropology >Competition, predation, and the evolutionary significance of the cercopithecine cheek pouch: The case of Cercopithecus and Lophocebus
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Competition, predation, and the evolutionary significance of the cercopithecine cheek pouch: The case of Cercopithecus and Lophocebus

机译：cerpipithecine脸颊袋的竞争，捕食和进化意义：Cercopithecus和Lophocebus病例

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Reports of cercopithecine cheek pouch use and functional significance are largely anecdotal, and to date there have been no investigations into its use by species living in closed forest habitats. Here, I report on cheek pouch use in Cercopithecus ascanius and Lophocebus albigena in the Kibale National Park, Uganda, between July-October 1997. Two hypotheses were evaluated: this feature was selected for because of its role in 1) increasing feeding efficiency via a reduction in potential feeding competition, and/or 2) reducing vulnerability to predation. Results indicate that both species were more likely to use their cheek pouches when feeding on contestable foods and, after filling cheek pouches, retreated to more densely vegetated ("safer") positions for processing food. There was no influence of age and sex on L. albigena cheek pouch use. Subadult C. ascanius cheek-pouched less frequently than adults, although there were ne differences between adult males and females. There was no relationship between feeding-patch size and number of plant food items cheek-pouched in either species. However, the diameter of breast height (dbh; a measure of patch size) of trees in which C. ascanius used their cheek pouches was significantly larger than the dbh of trees in which they did not. Both species were more likely to use their cheek pouches in the presence of greater numbers of conspecifics. These data provide insight into the relationship(s) among oral anatomy and feeding efficiency, and facilitate understanding into the selection for this important oral feature in stem cercopithecines. (C) 2004 Wiley-Liss, Inc.
机译：关于头孢哌啶脸颊袋使用及其功能意义的报道在很大程度上是轶事，迄今为止，尚未对生活在封闭森林生境中的物种对其使用的研究。在此，我报道了1997年7月至10月之间在乌干达基巴莱国家公园中的Cercopithecus ascanius和Lophocebus albigena脸颊袋使用的情况。对两个假设进行了评估：之所以选择此功能，是因为其作用1）通过提高动物的饲喂效率减少潜在的饲养竞争，和/或2）减少捕食的脆弱性。结果表明，这两种物种在以可竞争食物为食时都更有可能使用它们的脸颊袋，并且在将脸颊袋装满后，退还至植物密度更大（“更安全”）的位置以加工食物。年龄和性别对L. albigena脸颊袋使用没有影响。尽管成年雄性和雌性之间没有差异，但亚成体C. ascanius颊颊袋化的频率比成年少。在这两种物种中，补饲斑块的大小与脸颊袋装的植物性食物的数量之间没有关系。但是，阿斯卡努斯使用颊颊袋的树木的胸高直径（dbh;斑块尺寸的度量）显着大于不使用它们的树木的dbh的直径。在存在更多种时，两种物种都更可能使用其颊袋。这些数据提供了对口腔解剖结构和进食效率之间关系的深入了解，并有助于了解对茎状上皮氨酸这一重要口腔特征的选择。 （C）2004 Wiley-Liss，Inc.

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