Abstract # 13160 Poster # 76:

Scheduled for Thursday, August 9, 2018 06:00 PM-08:00 PM: (Chula Vista ) Poster Presentation


J. Cavallaro, S. D. Breaux and J. J. Breaux
University of Louisiana at Lafayette-New Iberia Research Center, PO Box 13610, New Iberia, LA 70562, USA
     Managers of nonhuman primate breeding programs occasionally accrue adult males within their colony that have been replaced in social groups by active breeders. Since these males have outgrown peer groups, they may be singly housed when no pair-mate is available. When pair-mates were unavailable within our colony, we proposed housing adult male pigtail macaques (Macaca nemestrina) with juvenile conspecifics as an alternative socialization paradigm. We introduced an adult male to three juvenile groups during 2016-2017. We observed nine social groups twice/week, using instantaneous scan sampling on three juvenile/male groups (juvenile mean age=2.3yrs; 30hrs), two juvenile only (mean age=2.16yrs; 20.5hrs) and four breeding groups (mean age 14yrs; 32.75hrs) and all occurrence focal sampling on adult males (n=7, mean age=13.3yrs; 39.8hrs). We discovered no differences in self-directed stereotypies (F=1.06,p=.4), pacing (F=1.25,p=.2), or affiliative behavior (F=?,p=?) between juvenile, juvenile/male, and breeding groups. While we observed increased rates of play behavior among juvenile groups over breeding groups (F=55.39, p<.05), there was no difference between juveniles housed with males or peers only (p=.99). Comparatively, adult males housed with juveniles exhibited similar levels of pacing (t=.97, p=.36) and affiliative behavior (t=.37,p=.72), but less time in close proximity to group members compared to males in breeding groups (t=4.0,p<.05). These results suggest that adult male pigtails may be successfully introduced to juvenile groups, providing an additional socialization option when no pair-mate is available.