Abstract # 908 Poster # 151:

Scheduled for Friday, August 19, 2005 07:00 PM-09:00 PM: (Cambridge/Oxford Room) Poster Presentation


RESPONSE TO NOVELTY IN MACACA NEMESTRINA AND MACACA FASCICULARIS VARIES BY SPECIES-SEX AND TIME IN FACILITY

H. B. Montgomery, K. L. Bentson and C. M. Crockett
Washington Nat. Primate Res. Ctr., University of Washington, Seattle, Washington 98195-7330, USA
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     A novel treat, a long strand of raw spaghetti, was offered by an unfamiliar observer to 219 laboratory monkeys to investigate the influence of species-sex category and time in colony on response to novelty. A monkey taking a treat within 40 seconds was scored "1." Male (M) and female (F) Macaca Nemistrina (Mn) and Macaca Fascicularis (Mfl) were tested three times for a maximum score of 3 (MaxScore). More individuals took the novel treat on test 3 than test 1 (paired sign-test, P = 0.0001, n = 219). MaxScore varied by species-sex category (Chi-square = 73.2, df = 9, P = 0.0001). Mn-M had higher MaxScores than Mn-F, Mfl-M, and Mfl-F. Time in colony was significantly correlated with MaxScore (Rs = +0.76, P < 0.001). Half of the subjects were recent arrivals (<1 year in facility). For recent arrivals, the means for each species-sex group were: Mfl-F 0.12, Mfl-M 0.50, Mn-F 0.31, and Mn-M 3.0. For monkeys ≥ 1 year in colony, the means were: Mfl-F 1.68, Mfl-M 2.88, Mn-F 2.92, and Mn-M 2.95. Recent arrivals of Mfl-F, Mfl-M, and Mn-F (but not Mn-M) had lower scores (Chi-square tests, P < 0.01). Mn-M showed a willingness to take the spaghetti from an unfamiliar person regardless of time in facility while Mfl-F were least likely to take the novel food, even after some time in the colony. These results are consistent with temperament differences found by other methods in our facility. NIH RR00166.