Wild capuchins (Cebus capucinus) fail to use tools in an experimental field study

From September through November 2000 we conducted an experimental field study of tool use in a group of 15 wild white-faced capuchins (Cebus capucinus) in Costa Rica. The problem presented to the capuchins involved the use of wooden dowels as probes to obtain a food reward (two bananas) located insi...

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Bibliographic Details
Published in:American journal of primatology 2004-03, Vol.62 (3), p.165-170
Main Authors: GARBER, P. A, BROWN, E
Format: Article
Language:English
Subjects:
Animal ethology
Animals
Biological and medical sciences
Biological anthropology
Cebus - psychology
Cognition
Costa Rica
Experiments
Feeding Behavior
Fundamental and applied biological sciences. Psychology
Mammalia
New World monkeys
Primatology
Problem Solving
Psychology. Psychoanalysis. Psychiatry
Psychomotor Performance
Vertebrata
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Summary:From September through November 2000 we conducted an experimental field study of tool use in a group of 15 wild white-faced capuchins (Cebus capucinus) in Costa Rica. The problem presented to the capuchins involved the use of wooden dowels as probes to obtain a food reward (two bananas) located inside a clear Plexiglas box. Specifically, the task required the capuchins to manually insert a dowel into any of six holes drilled into the box in order to push the bananas off a shelf. The banana could then be retrieved through a large opening at the bottom of the box. The capuchins visited the tool-use platform 702 times over the course of 55 consecutive days and under several experimental conditions. During the first 21 days of the study, they explored the box but made no attempt to touch or pick up the dowels. Even after we placed the dowels in the holes, the capuchins only occasionally manipulated them. Overall, the results indicate that the capuchins did not use a tool to solve this novel foraging problem.
ISSN:0275-2565
1098-2345
DOI:10.1002/ajp.20013