NDLI: Grooming and Infant Handling Interchange in Macaca fascicularis: The Relationship Between Infant Supply and Grooming Payment

Content Provider	Springer Nature Link
Author	Gumert, Michael D.
Copyright Year	2007
Abstract	Female long-tailed macaques are attracted to infants and frequently groom mothers bearing them. Such grooming often involves the groomer contacting the infant and may be a trade of grooming for infant handling. To identify if grooming and infant handling are directly traded, I collected samples on times after female-to-mother grooming and on interactions in which a female groomed a mother and contacted her infant. I determined that grooming tended to promote an exchange with infant handling and that the supply of available infants was related to how long a female groomed a mother. Grooming interactions were longer when infants were scarce in the surrounding social environment than when they were abundant, indicating a possible supply-and-demand effect. This supports that grooming may be payment for infant handling. Grooming-infant handling interchanges tended to be unidirectional as mothers usually did not reciprocate grooming. Instead, infant contact occurred. A larger proportion of grooming-infant handling interchanges involved younger infants, but infant age did not seem to influence grooming durations. The length of female-to-mother grooming had no observable effect on handling time. Lower-ranked females groomed higher-ranked mothers and their infants longer than vice versa. Moreover, it was possible to predict up-rank grooming via supply and demand better than down-rank grooming. There was no observable influence of kinship on grooming-infant handling interchange. These results support the conclusion that grooming and infant handling may be traded. Grooming promoted infant handling, while supply and rank predicted the grooming payment a female would offer to access an infant.
Starting Page	1059
Ending Page	1074
Page Count	16
File Format	PDF
ISSN	01640291
Journal	International Journal of Primatology
Volume Number	28
Issue Number	5
e-ISSN	15738604
Language	English
Publisher	Springer US
Publisher Date	2007-10-26
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	biological markets grooming infant handling interchange Macaca fascicularis Anthropology Human Genetics Evolutionary Biology
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

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Grooming and Infant Handling Interchange in Macaca fascicularis: The Relationship Between Infant Supply and Grooming Payment

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Grooming and Infant Handling Interchange in Macaca fascicularis: The Relationship Between Infant Supply and Grooming Payment

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Grooming and Infant Handling Interchange in Macaca fascicularis: The Relationship Between Infant Supply and Grooming Payment