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首页> 外文期刊>Primates >Cheek pouch use in relation to interspecific competition and predator risk for three guenon monkeys (Cercopithecus spp.)
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Cheek pouch use in relation to interspecific competition and predator risk for three guenon monkeys (Cercopithecus spp.)

机译：脸颊袋的使用与三只猴的种间竞争和捕食者风险有关（Cercopithecus spp。）

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Forest guenons (Cercopithecus spp.) are often found in polyspecific associations that may decrease predator risk while increasing interspecific competition for food. Cheek pouch use may mitigate interspecific competition and predator risk by reducing the time spent in areas of high competition/predator risk. I investigated these ideas in three forest guenons: Campbell’s monkey (Cercopithecus campbelli), spot-nosed monkey (C. petaurista), and Diana monkey (C. diana). I present 13 months of scan sample data from Taï Forest, Côte d’Ivoire, including 3,675, 3,330, and 5,689 records of cheek pouch distention, to quantify cheek pouch use, for Campbell’s, spot-nosed, and Diana monkeys, respectively. Cheek pouches are often used to hold fruit, so I first predicted that the most frugivorous species, Diana monkeys, would have the most cheek pouch distension. Spot-nosed monkeys ate the least amount of fruit over the study period and had the least distended cheek pouches, suggesting the importance of frugivory in relation to cheek pouch distension for this species. This was not a sufficient explanation for Campbell’s monkeys; Campbell’s ate fruit less than Diana monkeys, but had more distended cheek pouches, suggesting that cheek pouch use was not simply a reflection of high frugivory. From the interspecific competition hypothesis, I predicted that Campbell’s monkeys would have more distended cheek pouches than Diana and spot-nosed monkeys, and more distended cheek pouches when associated with Diana because Campbell’s monkeys have the highest potential for interspecific competition with dominant Diana monkeys. From the predator risk hypothesis, I predicted that Campbell’s would have more distended cheek pouches when not associated with highly vigilant Diana monkeys. Campbell’s monkeys had the most distended cheek pouches overall, but had more distended cheek pouches when not in association with Diana, suggesting the greater importance of predator risk rather than interspecific competition in Campbell’s cheek pouch use.
机译：通常在多特异性协会中发现森林扁豆（Cercopithecus spp。），它们可以降低捕食者的风险，同时增加对食物的种间竞争。颊袋的使用可以减少竞争/捕食者高风险地区的时间，从而减轻种间竞争和捕食者的风险。我研究了三种森林警犬的想法：坎贝尔的猴子（Cercopithecus campbelli），斑点鼻的猴子（C. petaurista）和戴安娜的猴子（C. diana）。我展示了来自科特迪瓦TaïForest的13个月扫描样本数据，包括3675、3330和5689颊袋扩张记录，以量化分别用于坎贝尔犬，点鼻猴和戴安娜猴的颊袋使用情况。脸颊袋通常用来盛装水果，因此我首先预测，最节食的戴安娜猴子将拥有最多的脸袋扩张。在研究期间，点鼻猴吃的水果最少，脸颊袋张开最少，这表明节食对于该物种的脸颊袋扩张很重要。对于坎贝尔的猴子来说，这还不够。坎贝尔吃的水果少于戴安娜的猴子，但脸颊袋更张开，这表明脸颊袋的使用不仅仅是简单的节食。从种间竞争假设出发，我预测坎贝尔的猴子的颊袋比戴安娜和斑点鼻子的猴子更张开，与戴安娜相关的脸颊袋也更张开，因为坎贝尔的猴子与优势戴安娜猴子的种间竞争潜力最大。根据捕食者风险假说，我预测，如果不与高度警惕的戴安娜（Diana）猴子联系在一起，坎贝尔的脸颊袋会更张开。坎贝尔的猴子总体上拥有最大的脸颊袋，但与戴安娜（Diana）无关时拥有更大的脸颊袋，这表明掠夺者风险比在坎贝尔的脸袋使用中进行种间竞争更为重要。

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