The distribution of grooming and related behaviours among adult female vervet monkeys |
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Authors: | Robert M. Seyfarth |
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Affiliation: | Rockefeller University, Field Research Center, Millbrook, N. Y. 12545 USA |
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Abstract: | Grooming and related behaviours among adult females in three groups of vervet monkeys were studied for 14 months. In all groups, high rates of grooming were significantly correlated with high rates of alliance formation and/or proximity. Females of all ranks competed more for the opportunity to groom high-ranking, as opposed to low-ranking, individuals. High-ranking females received more grooming than others and, at least partly as a result of competition, 16 of 23 females gave more grooming than expected to those of adjacent rank. Changes in grooming distributions during the eight weeks after birth were accurately predicted in four cases studied by a model based on the attractiveness of females with infants, the attractiveness of high rank, and competition. |
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