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Prenatal maternal-investment rate (litter weight divided by gestation) was found to be the best available predictor of female dominance in primates. The female-dominant Malagasy lemurs are unique in their combination of a relatively low basal metabolic rate and a relatively high rate of prenatal maternal investment. The relationship between maternal investment and basal metabolic rate in strep-sirhines supports the hypothesis that lemurs raise their basal metabolic rate during reproduction and suggests that this increase is on the order of 75% or more.
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Young et al. (1990) studied this question.
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