Journal Article <論文・報告>ニホンザル(Macaca fuscata)餌付け群におけるグルーミングの衛生的機能:グルーミング成功率の変化に注目して

吉田, 創志

1pp.91 - 93 , 2016-03 , 京都大学学際融合教育研究推進センター高大接続科学教育ユニット
理学 人類進化論
Social grooming is thought to serve both hygienic and social functions among Japanese macaques (Macaca fuscata). I performed a field study on a provisioned troop of Japanese macaques in Arashiyama, Kyoto, in order to understand the significance of the hygienic function of grooming. I divided grooming into two distinct actions, “searching” and “removing, ” and recorded the occurrence of each. I defined the ratio of occurrence of removing to that of searching as the grooming success rate. I found that the success rate in a given day tends to decrease, albeit not significantly; however, the success rate during each bout of grooming decreases significantly. There was a tendency for the success rate to come down when a grooming bout ended spontaneously. The results suggest that Japanese macaques try to remove parasites effectively. Therefore, I was able to verify the practicality of the hygienic function of grooming.

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