Abstract # 148:

Scheduled for Sunday, September 18, 2011 05:15 PM-05:30 PM: Session 20 (Salon F (Sixth Floor)) Oral Presentation


CHARACTERIZATION OF ALOPECIA IN FOUR SPECIES OF NON-HUMAN PRIMATES

K. R. Jacobsen1, L. M. Hopper2,3, T. McAdams2, R. Merino2, K. Sherenco2, S. P. Lambeth2 and S. J. Schapiro2
1Department of Experimental Medicine, University of Copenhagen and University Hospital, Copenhagen, USA, 2Department of Veterinary Sciences, Michale E. Keeling Center for Comparative Medicine and Research (KCCMR), The University of Texas MD Anderson Cancer Center, Bastrop, TX, 3Language Research Center, Georgia State University, Atlanta, GA
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Alopecia (hair loss) is a common phenomenon in captive non-human primates and is often of concern to behavioral specialists and veterinarians working with these animals. Although associated with pathological and psychological causes, the multifactorial etiology of hair loss complicates its use in welfare assessments. Alopecia ratings from 29 Chimpanzees (Pan troglodytes), 151 rhesus macaques (Macaca mulatta), 61 squirrel monkeys (Saimiri sciureus sciureus, Saimiri boliviensis, Saimiri boliviensis peruviensis) and 36 owl monkeys (Aotus nancymaae, Aotus azarae and Aotus vociferans) of both sexes were collected during all four seasons for two consecutive years at the KCCMR, USA. Hair coat quality was judged for all subjects using a 5-point scale, in which 1 represent no hair loss and 5 being severely affected by alopecia. Data was analyzed with nonparametric Kruskal-Wallis tests. Overall, subspecies, season, breeding status, age and sex significantly affected hair loss. Despite species differences, a clear tendency was seen with breeding female monkeys having the highest levels of alopecia (p < 0.05). This correlated with the highest alopecia score in the rhesus and squirrel monkeys during the spring (p < 0.000). However, season did not affect owl monkeys and chimpanzees had highest level of alopecia in the fall (p < 0.000). The data from this study help identify potential risk factors and causes of hair loss in the four species of captive non-human primates studied.