Capture techniques and morphometrics for the woolly spider monkey, or muriqui (Brachyteles arachnoides, E. Geoffroy 1806)

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A total of 12 free‐ranging muriquis (Brachyteles arachnoides) were captured with Telazol® at Fazenda Esmeralda, Minas Gerais, Brazil, and at Fazenda Barreiro Rico, São Paulo, Brazil. All animals were measured, marked, weighed, and released. Previously reported data suggested that Brachyteles is a sexually dimorphic species with female‐male body weights of 12–15 kg, respectively. We found no statistically significant difference in body weight between females (mean = 8.4 kg, range = 6.9–9.3 kg, n = 4), and males (mean =9.6 kg, range = 9.3–10.2 kg, n = 4). Our results are at variance with previously published body weights in the literature. Larger sample size may reveal a significant sexual difference, particularly in body weight. © 1993 Wiley‐Liss, Inc. Copyright © 1993 Wiley‐Liss, Inc., A Wiley Company






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Lemos de Sá, Rosa M, and Kenneth E Glander (1993). Capture techniques and morphometrics for the woolly spider monkey, or muriqui (Brachyteles arachnoides, E. Geoffroy 1806). American Journal of Primatology, 29(2). pp. 145–153. 10.1002/ajp.1350290206 Retrieved from

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Kenneth Earl Glander

Professor Emeritus of Evolutionary Anthropology

Primate ecology and social organization: the interaction between feeding patterns and social structure; evolutionary development of optimal group size and composition; factors affecting short and long-term demographic changes in stable groups; primate use of regenerating forests.

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