Abstract # 54:

Scheduled for Saturday, September 13, 2014 07:00 PM-09:00 PM: Session 11 (Decatur B) Poster Presentation


DOES NEARBY CONSTRUCTION INCREASE AGGRESSION IN OUTDOOR, SOCIALLY HOUSED MACAQUES?

D. H. Gottlieb, K. Andrews, K. Coleman, C. L. Johnson, C. M. Lender, K. Prongay and K. Taylor
Oregon National Primate Research Center, Beaverton, Oregon 97006, USA
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     While construction activity is known to increase stress in indoor-housed macaques, its effects on outdoor, socially housed monkeys is less understood. Recently, a building was erected in close proximity to multiple groups of rhesus macaques (Macaca mulatta) at the Oregon National Primate Research Center. Shortly after construction onset, an adjacent group became socially unstable. The goal of this project was to examine the effects of noise and vibration from the construction on the behavior of this unstable group, as well as two additional groups of macaques (approximately 150 individuals each). Behavioral observations were performed using all occurrence and instantaneous scan sampling up to 15 times a week for 20 weeks, totaling 276 hours. Magnitude of vibration and peak sound pressure from construction activity were recorded 24 hours/day at 60-second intervals from five microphones strategically placed near the enclosures. Data were analyzed using generalized linear mixed effects modeling. Contrary to expectations, increased average construction noise at the time of observation, and prior to observation was associated with reduced aggressive interactions (p < 0.001). Increased average construction vibration at the time of observation was also associated with reduced aggression (p < 0.001). While we are unable to determine if the initial onset of social instability was related to the construction, these results indicate that daily construction noise and vibration magnitude did not increase daily frequency of aggression.