© 1993 by The Society for Integrative and Comparative Biology
The Reproductive and Social Dynamics of Captive Ateles geoffroyi (Black-Handed Spider Monkey)1
Department of Biology, Southeast Missouri State University Cape Girardeau, Missouri
St. Louis Zoological Park, Forest Park, St. Louis, Missouri
SYNOPSIS. This project was designed to provide quantitative analyses of the reproductive and social dynamics of a single-male captive colony of Ateles geoffroyi (black-handed spider monkey). Data were collected using focal animal and scan sampling techniques and were subjected to a series of statistical tests which provided quantitative descriptions of group social structure and measures of female secondary sexual behavior cyclicity. Results indicated that the colony is highly social, with tactile and olfactory cues important in their communication process. In addition, only the reproductive female was found to exhibit cyclical secondary sexual behaviors. Greater understanding of the patterns and variability in the social and reproductive behavior of Ateles will require comparative studies of other single-male and multimale populations.