Funding for this research was provided by:
Japan Society for the Promotion of Science (23220006, 24000001, 15H05709, 16H06283, 18J21474, 20F20310, 20F20310, JSPS-LGP-U04, JSPS Core-to-Core CCSN)
Ministry of Education, Culture, Sports, Science and Technology (National BioResource Project-Great Ape Information Network)
Received: 6 April 2021
Revised: 13 December 2021
Accepted: 15 December 2021
First Online: 28 January 2022
: The authors declare no conflict of interest.
: The daily care and use of the chimpanzees adhered to the 2010 Guidelines for the Care and Use of Laboratory Primates of KUPRI. The research proposal was approved by the Animal Welfare and Animal Care Committee of KUPRI and the Animal Research Committee of Kyoto University (#2019-064, #2020-118). All procedures adhered to the Japanese Act on the Welfare and Management of Animals.