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P.6 left column bottom paragraph: "Table 1 presents data on body mass (kg), resting metabolic rate (RMR, kcal/day), brain mass (g) and dietary quality for 41 species of primates, including humans. Data on metabolic rates and associated body masses were derived from Leonard and Robertson (1994), McNab and Wright (1987), Thompson et al. (1994) and Kappeler (1996). Data on brain weights and body masses were obtained from Bauchot and Stefan (1969), Stephan et al. (1981) and Jerison (1973). Information on dietary quality was obtained from data presented by Leonard and Robertson (1994), Sailer et al. (1985), Richard (1985) and Rowe (1996). The human data point is an average based on dietary data from 5 human foraging populations: the !Kung, Ache, Hiwi, Ituri Pygmies and Inuit (from Leonard and Robertson, 1994). Diet quality (DQ) was assessed using an index developed by Sailer et al. (1985) that considers the relative energy and nutrient density of dietary items. The DQ index is a weighted average of the proportions of foliage, reproductive plant material, and animal material. DQ is calculated as: DQ=s+2(r)+3.5(a) where s=percent of diet derived from structural plant parts (e.g. leaves, stems, and bark), r=percent of diet derived from reproductive plant parts (e.g. fruits, flowers, nectar, and resin) and a=percent of diet derived from animal parts (including both vertebrates and invertebrates). The DQ ranges from a minimum of 100 (100% foliage) to a maximum of 350 (100% animal material)." |