Greeting behavior during party encounters in captive chimpanzees |
| |
Authors: | Kyoko Okamoto Naoki Agetsuma Shozo Kojima |
| |
Institution: | (1) Present address: Primate Research Institute, Kyoto University, 484-8506 Inuyama Aichi, Japan;(2) Present address: Tomakomai Research Forest, Center for Field Science of Northern Biosphere, Hokkaido University, Takaoka, Tomakomal, 053-0035 Hokkaido, Japan |
| |
Abstract: | Party encounter situations were experimentally produced in a group of captive chimpanzees (Pan troglodytes verus) at the Primate Research Institute of Kyoto University, Japan. During weekends all subjects (two adult males and five adult
females) usually stayed together in the rooms (Baseline condition). Under experimental conditions, we shut passages between
rooms to divide the subjects into two groups. We examined the effects of temporal separation of group members on affiliative
interactions, aggressive interactions, and simple proximity. The frequency of affiliative interactions between male and female
chimpanzees and between female chimpanzees increased when they encountered one another after separation, irrespective of male
identity or housing history. Therefore we considered affiliative interactions between males and females during party encounters
as being the response between separated individuals. The same tendency was not found in the frequency of affiliative interactions
between females or between males. Unlike affiliative interactions, neither aggressive interactions nor simple proximity were
influenced by separation. |
| |
Keywords: | Chimpanzee Greeting behavior Encounter Parties Experimental study |
本文献已被 SpringerLink 等数据库收录! |
|