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- Title
Triadic Positions of Tibetan Macaques Huddling at a Sleeping Site.
- Authors
Ogawa, Hideshi; Takahashi, Hiroyuki
- Abstract
We studied huddling of Tibetan macaques (Macaca thibetana) at a sleeping site in Huangshan, China, during the mating and birth seasons. Tibetan macaques in a free-ranging group made physical contact with each other and formed huddling groups on the ledge of a steep cliff at night. We analyzed the size and composition of huddling groups and the frequencies of dyadic huddles—two individuals in physical contact—in the huddling group to determine the social influences on huddling behavior. Affiliated dyads that frequently groomed in the daytime frequently formed dyadic huddles in nighttime huddling groups. Female-male dyads formed dyadic huddles less frequently than expected. In addition, Tibetan macaques chose 2 partners with which they initiated contact when they approached a huddling group. The frequencies with which some combinations of 3 individuals contacted each other and form ed triangular huddles are not consistent with the expected frequencies. For example, female-male-male triads frequently formed triangular huddles in the birth season but did so infrequently in the mating season because of male competition for estrous females. When all 3 dyads' within a certain triad formed dyadic huddles frequently, the triad was more likely to form a triangular huddle. The choices of approaching individuals' might make a systematic, rather than random, positioning of individuals in huddling groups at their sleeping site.
- Subjects
CHINA; MACAQUES; ANIMAL behavior
- Publication
International Journal of Primatology, 2003, Vol 24, Issue 3, p591
- ISSN
0164-0291
- Publication type
Article
- DOI
10.1023/A:1023792431064