Abstract # 89:

Scheduled for Thursday, August 18, 2005 07:00 PM-09:00 PM: (Cambridge/Oxford Room) Poster Presentation

Relationship of Varied Maternal Social Rearing Conditions with Infant Social Development: A Preliminary Study

B. Crouthamel1,2, E. Rainwater1,2 and G. P. Sackett1,2
1IPRL WaNPRC, IPRL, Box 357330, University of Washington, Seattle, WA 98195, USA, 2Center for Human Development and Disability
     Differences in maternal behavior affect offspring behavior, as illustrated by intergenerational abuse and social development when reared by dominant compared with subordinate mothers. This suggests the hypothesis that variation in maternal behaviors affecting offspring may be related to the mother's rearing environment. In ongoing research, we assessed behavior of 25 male monkeys (Macaca nemestrina), mother-reared for 6-7 months in Tulane NPRC 1-acre social groups, then brought to Seattle. Maternal origin groups were (i) wild caught in Indonesia (n = 7), or reared in (ii) WaNPRC Medical Lake group rooms for 3 years or more (n = 4), (ii) Medical Lake for less than 3 years (n = 10), or (iv) born and raised at Tulane (n = 4). Social behavior was coded during daily 30-minute 5-monkey playroom sessions from 8-11 months of age. Animals were tested 3-5 times a week, using 5-minute focal animal observations. We analyzed frequency and duration data for total social, self-directed and scratching activities, and passive, positive, negative, and sexual behavior using 1-way ANOVAs (Maternal Group and Month effects) and Bonferroni tests. Although a few significant Group effects were found at various months, there were no reliable Group main effects or consistent group differences in trends over months. At this point, we have little or no support for the hypothesis that the maternal social rearing conditions compared in this study produce offspring behavioral differences. Supported by NIH grants RR00166 and HD02274.