| Abstract: | The influence of female odors on agonistic behavior among grouped male prairie voles (Microtus ochrogaster) was studied. After the introduction of female odors, investigative behavioral interactions between the males increased in frequency. The source of the odor, the sexual experience of the males, and the ongoing behavior of the group influenced the intensity of the behavioral response. Sexually experienced males showed the greatest number of agonistic instances and attempted sexual interactions after the introduction of urine from estrous females. Agonistic interactions did not decrease upon the introduction of female odors, as has been reported for Mus musculus. It is concluded that these behavioral changes are not due to a response to a releaser pheromone, but are the result of confusion in communication between males. |
