The Ecological Design of the Affiliative Vocal Communication Style in Wild Japanese Macaques: Behavioral Adjustments to Social Contexts and Environments

摘要: Coo calls, contact calls used by Japanese macaques for intragroup vocal communications, have been proposed as functioning to maintain interindividual spatial cohesion in wild populations and served the primary focus of previous investigations. Although behavioral variations communication reported on basis group membership, social status, individual differences, accumulating evidence generally shows that adjust their style avoid separation from members. We propose two fundamental causes underpin these phenomena: risk internal motivation coordinate group. Separation risks induce communications relying likely determine type primate groups.