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Secondary sex ratios by maternal rank, parity, and age in captive rhesus macaques ( Macaca mulatta )

1986; Wiley; Volume: 11; Issue: 4 Linguagem: Inglês

10.1002/ajp.1350110406

1098-2345

Meredith F. Small, Sarah Blaffer Hrdy,

Animal Behavior and Reproduction

Abstract Analysis of 645 conceptions by captive rhesus macaques ( Macaca mulatta ) with known reproductive histories indicated that maternal age and parity had little effect on the sex of progeny. There was, however, a slight indication that high‐ranking females produced a higher proportion of daughters and relatively fewer sons than did low‐ranking females. These results provide only weak support for the “advantaged daughter” hypothesis suggested by three previous studies of cercopithecine monkeys, and therefore they further confound the conflicting results for macaques and baboons in general.