Journal
PRIMATES
Volume 53, Issue 1, Pages 49-56Publisher
SPRINGER TOKYO
DOI: 10.1007/s10329-011-0271-5
Keywords
Embraces; Grooming; Reciprocation; Risk
Categories
Funding
- Punta Laguna community
- British Academy
- Wenner-Gren Foundation
- National Geographic Society
- North of England Zoological Society
- University of Chester
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In social organizations characterized by male philopatry, social relationships between males are argued to be the strongest. Little is known about the social relationships of philopatric male spider monkeys. To address this limitation, we investigated social relationships among individually recognized wild adult male spider monkeys from two well-habituated communities in the Yucatan Peninsula, Mexico, focusing on affiliative behaviors important in regulating male social relationships, including grooming, embracing, arm-wrapping, and grappling. We examined whether behaviors were reciprocated between male partners and whether age was a factor in how the behaviors were distributed or reciprocated, by examining differences between younger adult males (< 10 years) and older adult males (a parts per thousand yen14 years). Although we found evidence that affiliative behaviors were overall reciprocated between spider monkey adult males, there were pronounced differences in the interactions depending on their relative age. Reciprocation in grooming and embraces between same-age males suggests their relationships are valuable to both partners. Among different-age dyads, younger males gave more embraces than they received, were the initiators of grappling and arm-wrapped more often than with same-age males, suggesting relationships between younger and older males are more risky. This confirms that younger males are attracted to older males, probably because they value relationships with older males more than the reverse, but they are also at risk.
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