期刊
BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY
卷 63, 期 9, 页码 1345-1352出版社
SPRINGER
DOI: 10.1007/s00265-009-0792-8
关键词
Social dominance; Breeding value; Quantitative genetics; Heritability; Female maturation; Cayo Santiago
资金
- University of Puerto Rico, Medical Sciences Campus
- National Institutes of Health (NIH)
- National Center for Research Resources (NCRR) [CM-5 P40 RR003640-20]
Females of many cercopithecine primates live in stable dominance hierarchies that create long-term asymmetries among sets of female relatives (matrilines) in access to limiting resources and shelter from psychosocial stress. Rank-related differences in fitness components are widely documented, but their causes are unclear. Predicted breeding values from an animal model for female age of first reproduction are used to discriminate between shared additive genetic and shared environmental effects among the members of matrilines in a population of free-ranging rhesus macaques (Macaca mulatta). While age of first reproduction has a modest heritability (a parts per thousand 0.2), breeding values are distributed in a largely random fashion among matrilines and contribute little to the observed rank-related differences in average age of first reproduction. These results support the long-held, but previously unverified, contention that rank-related life history differences in female cercopithecine primates are the result of environmental rather than genetic differences among them.
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