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  • Title: Anointing with commercial insect repellent by free-ranging Cebus capucinus in Manuel Antonio National Park, Quepos, Costa Rica.
    Author: Santos ER, Ferrari SF, Beltrão-Mendes R, Gutiérrez-Espeleta GA.
    Journal: Primates; 2019 Nov; 60(6):559-563. PubMed ID: 31440864.
    Abstract:
    Fur rubbing or anointing is a well known behavior in capuchin monkeys (Cebus and Sapajus), and may have medicinal and/or social functions. Observations of anointing in capuchins have recorded the application of substances derived from both plants (orange, onion, garlic, citronella, and lemongrass) and animals (ants and millipedes). The present study reports on anointing behavior in free-ranging white-headed capuchins, Cebus capucinus, which involved a commercial insect repellent. After looting a bottle of repellent from the bag of a visitor to the Manuel Antonio National Park in Costa Rica, an adult male bit open the bottle and rubbed the leaking liquid over its entire body, focusing mainly on its belly. Other members of the group rubbed themselves against the male's body and were eventually able to retrieve the bottle of repellent and anoint themselves. The repellent is composed mainly of extracts of eucalyptus and citronella. The capuchins may have been attracted by the strong citric scent of the citronella, which is known to stimulate fur-rubbing behavior in these monkeys. This is reinforced by the fact that the sequence of events was quite distinct from that associated with an earlier event, in which a juvenile male looted, tasted, and then discarded a stick of lip gloss and a tube of sunblock. Overall, the observations indicate that the citric scent of the repellent was attractive to the capuchins, especially in comparison with other man-made substances. As the animals partially ingested all the substances, there is clearly a need for more effective regulation of the contact between animals and visitors in the park.
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