Parasite selection pressures have driven the evolution of numerous behavioral defenses in host species, but recent studies revealed individual variation in their expression. As little is known about the factors causing heterogeneity among individuals in infection-avoidance behaviors, we investigated in woolly monkeys (Lagothrix lagotricha poeppigii) the influence of several environmental and individual characteristics on the tendency to avoid food contaminated by soil and by their own and conspecifics' feces.

中文翻译：

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半自由放养的长毛猴（Lagothrix lagotrica poepppigii）避免粪便的环境和个体决定因素

寄生虫选择压力推动了宿主物种众多行为防御的进化，但最近的研究揭示了它们表达的个体差异。由于对导致个体之间避免感染行为异质性的因素知之甚少，我们在长毛猴（Lagothrix lagotrica poeppigii）中研究了几种环境和个体特征对避免被土壤污染的食物以及它们自己和同种动物污染的倾向的影响' 粪便。