Abstract # 5991 Event # 191:

Scheduled for Monday, September 15, 2014 11:15 AM-11:30 AM: Session 25 (Mary Gay) Oral Presentation


NUTRITIONAL STRATEGIES DURING SPRING AND WINTER IN AN ASIAN COLOBINE, RHINOPITHECUS ROXELLANA$

P. A. Garber1, R. Hou2, N. Righini1, W. Ji3, B. Li4 and S. Guo5
1Univ. of Illinois Urbana-Champaign, Dept. of Anthropology, Urbana, IL 61801, USA, 2Northwest University, School of Life Sciences, Xi'an, China, 3Human and wildlife interactions research Group Institute of Natural Mathematical Sciences, Massey University, Auckland, New Zealand , 4Shaanxi institute of Zoology, College of Life Sciences, Northwest University, Xi’an, China, 5Laboratory of Resource Biology and Biotechnology in Western China of Ministry of Education, and College of Life Sciences, Northwest University, Xi’an, China
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     Studies examining primate nutritional ecology are central to understanding the ability of individuals to successfully exploit habitats characterized by low quality or difficult to digest resources. Here we present data on patterns of nutrient intake in the golden snub-nosed monkey (Rhinopithecus roxellana), an endangered species of Asian colobine inhabiting high altitude deciduous broadleaf and conifer forests in central China. We used provisioning as a research tool to determine how the nutritional content of provisioned foods influenced same day dietary choices and nutrient intake of natural foods. Data were collected during 27 days in the Spring (48% of diet from natural foods) and 14 days during the Winter (33% of diet from natural foods). Overall, in the spring 15.1% of total energy was consumed as protein, 75.9% as carbohydrates, and 9.1% as lipids. During the winter these values were 10.8% protein, 83.6% carbohydrates, and 5.6% lipids. Across both seasons, the ratio of daily protein to nonprotein energy intake varied less (CV = 17-23%) than the intake of other macronutrients. During the winter the monkeys consumed significantly more energy per unit metabolic body mass then during the spring (132 kJ mbm-1 hr-1 vs. 41 kJ mbm-1 hr-1). We argue that in order to survive cold winter temperatures and the high costs of thermoregulation, golden snub-nosed monkeys exploit an energy rich diet during the winter.