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An exploratory study of cooperation: food-sharing behaviour in wild varied white-fronted capuchin monkeys (Cebus versicolor) in Central Colombia

In: Behaviour
Authors:
Itzel De Aquino Facultad de Psicología, Universidad Nacional Autónoma de México, Mexico City, Mexico
Laboratorio de Cronoecología y Etología Humana. Departamento de Etología. Dirección de Neurociencias, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City, México

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https://orcid.org/0000-0003-4209-858X
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Isaac González-Santoyo Facultad de Psicología, Universidad Nacional Autónoma de México, Mexico City, Mexico

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https://orcid.org/0000-0002-1484-9836
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Andres Link Departamento de Ciencias Biológicas, Universidad de los Andes, Bogota, Colombia

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https://orcid.org/0000-0003-3125-249X
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Jairo Muñoz-Delgado Facultad de Psicología, Universidad Nacional Autónoma de México, Mexico City, Mexico
Laboratorio de Cronoecología y Etología Humana. Departamento de Etología. Dirección de Neurociencias, Instituto Nacional de Psiquiatría Ramón de la Fuente Muñiz, Mexico City, México

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https://orcid.org/0000-0002-2249-4465
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Abstract

Food-sharing is a cooperative behaviour related to the transfer of resources between conspecifics, and it is considered a complex prosocial behaviour because of its associated costs. It is more likely that an individual cooperates with closely related kin (e.g., in food sharing), and particularly with close maternal kin. In female philopatric species, such as Cebus spp., mother–offspring bonds likely explain patterns of maternal kin biases. On the other hand, the explanation of the evolution of food-sharing among non-kin is diverse. Capuchin monkeys (genera Cebus and Sapajus) are interesting to study cooperation since this is a critical behaviour to gain and protect ecological and reproductive resources in the wild, including care of their offspring. We performed an experimental protocol to induce behavioural observations with a provisioning technique using chicken eggs in a wild group of white-faced capuchin monkeys (Cebus versicolor). We aimed to test whether this white-faced capuchin monkeys engaged in food-sharing in the wild, describing the pattern of this cooperative behaviour. Furthermore, we also described some conditions that might affect this behaviour. We observed that these capuchins shared the eggs in passive exchanges, meaning that possessors let other individuals to eat from their egg. Our results further suggest that these exchanges may be due to mainly maternal kin biases. This study offers a preliminary observation of a little-studied capuchin species in the wild and adds information about how cooperation works in the wild.

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