Abstract # 45:

Scheduled for Thursday, June 21, 2007 05:00 PM-07:00 PM: Session 7 (South Main Hall) Poster Presentation

Behavioral Response to Brief, Early Separation Predicts Development of Stereotypy in Rhesus Monkeys (Macaca mulatta)

J. Vandeleest1,2, J. Capitanio1,2 and B. McCowan2
1Psychology Department, University of California-Davis, One Shields Avenue, Davis, CA 95616, USA, 2California National Primate Research Center, Davis, CA
     The purpose of this study was to determine the influence of early behavioral responsiveness on the later development of stereotypy in indoor, laboratory housed rhesus monkeys. Animals had been reared in outdoor field cages (FC) or corn cribs (CC); indoors with mother and access to another mother-infant pair (MR), or with a peer in a nursery (NR). Inclusion criteria included living indoors for at least 2 months and participation in the CNPRCs Biobehavioral Assessment program, which involves assessing behavioral and physiological responsiveness during a 24-hour separation and relocation at 3-4 months of age. Animals were classified as exhibiting motor stereotypy if, during their period of indoor living, this behavior was recorded on at least two separate monthly assessments. Two-way ANOVAs [a=0.05] revealed that FC animals responded to the separation and relocation with significantly greater emotionality compared to CC animals, and only FC animals significantly increased their activity over the 24-hr. testing period. Separate logistic regressions [a=0.05] were then run for each rearing condition to determine if behavioral responsiveness was a predictor of stereotypy. For FC animals only, low emotionality at the end of the 24-hr. testing period was a significant predictor of developing stereotypies. These data suggest that a brief separation can reveal rearing differences in emotionality, and that behavioral responsiveness to early separation can predict later management-related behavioral outcomes.