Abstract # 221:

Scheduled for Monday, August 28, 2017 02:30 PM-02:45 PM: (National Ballroom Salon A) Oral Presentation


M. A. Bryer1,2, D. Raubenheimer3 and J. M. Rothman1,2,4
1The Graduate Center of the City University of New York, 365 Fifth Avenue, Anthropology Program, New York, New York 10016, USA, 2New York Consortium in Evolutionary Primatology, 3Charles Perkins Centre and School of Life and Environmental Sciences, University of Sydney, 4Hunter College of the City University of New York
     Primates consume a combination of available foods in a complex environment to meet their nutritional needs, which change depending on variables like reproductive status. Redtail monkeys, small bodied guenons, rely primarily on fruits and secondarily on insects, leaves, and flowers. The goal of this study was to determine the balance of non-protein energy to available protein in the diets of redtails, and understand their nutritional strategy compared to other primates. We conducted full-day focal follows (n=96) on adult females (n=24) in three groups in Kibale National Park, Uganda and analyzed >402 food samples using wet chemistry and near-infrared spectroscopy. Plant reproductive parts contained a mean of 40.6 ± 16.4 (SD) neutral detergent fiber (NDF), 31.5 ± 15.5 acid detergent fiber (ADF), 15.5 ± 9.6 acid detergent lignin (ADL), 15.8 ± 5.7 crude protein, and 7.6 ± 7.6 fat. In contrast, leaf parts contained a mean of 42.3 ± 8.3 NDF, 28.8 ± 7.5 ADF, 14.6 ± 6.5 ADL, 24.6 ± 5.8 crude protein, and 2.8 ± 0.9 fat; insects contained a mean of 9 ± 2.3 chitin, 68.6 ± 10.6 crude protein and 12 ± 4.5 fat. Preliminary results show that females maintain a NPE:AP balance of 7.8:1 and average daily energy intake of 407 ± 104 kcal, a strategy between that of other frugivores and omnivores studied. Supported by NSF (BCS-1540369, BCS-1521528, BCS-0922709, DGE-0966166).