The association between rank and reproductive success of male rhesus monkeys

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Abstract
The paternity of 202 of 220 offspring of rhesus monkeys housed in six separate half‐acre field cages at the California Primate Research Center was determined by genetic marker techniques. Reproductive success of the adult males was statistically significantly correlated (r = 0.76, P <0.0005) with rank. Marked systematic changes in reproductive success were, however, observed for two adult males during the three years covered by this study. Based upon these results and those of another study, it is argued that changes in rank position typically follow, rather than precede, changes in reproductive success.