Journal
PRIMATES
Volume 52, Issue 4, Pages 323-328Publisher
SPRINGER TOKYO
DOI: 10.1007/s10329-011-0267-1
Keywords
Grooming; Hygienic function; Mahale Mountains; Removal movement; Wild chimpanzee
Categories
Funding
- COE [10CE2005]
- Leakey Foundation
- MEXT [15004835]
- Grants-in-Aid for Scientific Research [10CE2005] Funding Source: KAKEN
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Grooming was observed in 11 wild chimpanzees (Pan troglodytes schweinfurthii) in Mahale, Tanzania, and the number of removal and stroke movements and grooming duration were recorded. Removal movements were more frequent during social grooming than during self-grooming. Chimpanzees used one or both hands for grooming, and grooming using both hands was more efficient for removing small objects. Due to physical constraints, self-grooming of the arms was almost always done using only one hand. The removal movement frequency during arm grooming was lower when self-grooming than when grooming another. They were more likely to use both hands during grooming another than during self-grooming, and fewer physical constraints during social grooming enabled a higher level of hygienic grooming.
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