Predation and Predation Attempts on Red Titi Monkeys (Callicebus discolor) and Equatorial Sakis (Pithecia aequatorialis) in Amazonian Ecuador
Predation and Predation Attempts on Red Titi Monkeys (Callicebus discolor) and Equatorial Sakis (Pithecia aequatorialis) in Amazonian Ecuador
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DOI：
10.1159/000314948
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发表时间：
2010-01-01
影响因子：
1.9
通讯作者：
Fernandez-Duque, Eduardo
中科院分区：
文献类型：
--
作者：
de Luna, Ana Gabriela;Sanmiguel, Ramiro;Fernandez-Duque, Eduardo
关于捕食的轶事报告以及观察到的捕食企图和动物消失率为评估捕食风险可能对灵长类行为生态学的影响提供了一些最相关的数据。在这里，我们报告了在四年半的时间里，在厄瓜多尔亚马逊低地对六组红山雀（Callicebus discolor）和两组赤道僧帽猴（Pithecia aequatorialis）的消失率进行了跟踪调查。我们还描述了第一次直接观察到一只大雕（Harpia harpyja）捕食一只山猫猴，以及三次泰拉（Eira barbara）对山猫猴的攻击失败和四次各种猛禽对僧帽猴的攻击失败。我们的数据表明，猿类灵长类动物可能面临比以前认识到的更广泛的潜在捕食者，而山雀和僧帽猴容易受到不同主要类别的捕食者的影响。我们的观察还表明，在捕食者防御过程中，性别角色的差异可能与一夫一妻制的进化和维持有关。版权所有：S. Karger AG，巴塞尔
Anecdotal reports of predation as well as observed predation attempts and rates of animal disappearance provide some of the most relevant data for evaluating the influence that predation risk may have on primate behavioural ecology. Here, we report rates of disappearance from six groups of red titi monkeys (Callicebus discolor) and two groups of equatorial sakis (Pithecia aequatorialis) followed over a period of four and a half years at a lowland site in Amazonian Ecuador. We also describe the first direct observation of a harpy eagle (Harpia harpyja) preying upon a titi monkey, as well as 3 unsuccessful attacks by tayras (Eira barbara) on titi monkeys and 4 unsuccessful attacks by various raptors on sakis. Our data indicate that pitheciid primates may face a wider array of possible predators than previously recognized, and that titi monkeys and sakis are susceptible to different major classes of predators. Our observations also suggest differences in the sex role during predator defence that could be related to the evolution and maintenance of monogamous systems. Copyright (C) 2010 S. Karger AG, Basel