Author:
Xia Wancai,Grueter Cyril C.,Ren Baoping,Zhang Dejun,Yuan Xiaoxia,Li Dayong
Abstract
We used long-term data on the variation in harem size in Yunnan snub-nosed monkeys to research the effects of harem size on reproductive success and the ratio of grooming received to given (RGRG). The results suggest that harem holders derive reproductive benefits commensurate with harem size, whereas the females’ reproductive success is unaffected by harem size. Males of larger harems groomed less and had higher RGRG than males of smaller harems. In the case of females, grooming given increased, and RGRG decreased with an increase in harem size. The males’ reproductive success seems to be a driver of harem size maximization. From the females’ perspective, dwindling social benefits appear to set the upper limit for harem enlargement. We also showed that males of monogamous units (‘single-female harems’) invested more into grooming their female, presumably to prevent unit disintegration and loss of mating privileges.
Funder
the National Natural Science Foundation of China
the Second Tibetan Plateau Scientific Expedition and Research Program
Subject
General Veterinary,Animal Science and Zoology
Cited by
2 articles.
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