| Outline of Annual Research Achievements |
In this fiscal year I was able to run several experiments across species. I finished data collection for investigation of oxytocin's effect on natural bonobo behaviour (now a preprint and submitted), designed and piloted a group-level cooperation task with bonobos and chimpanzees, conducted an experiment using GPS tracking to investigate oxytocin's effect on whole-herd social dynamics in horses, and set up collaborations to observe bonobo response to outgroup sounds (to compare with our published chimpanzee paper) in Europe and America, to combine with my data from Japanese bonobos. I published three additional papers, including one theoretical paper about evolution under expansion to novel environments, a response to a commentary about our dog tool use paper, and another welfare paper designing new chimpanzee environmental enrichment, and presented at 2 international conferences. Paper details are:
Brooks, J, Kano, F, Yeow, H, Morimura, N, Yamamoto, S (preprint) "Oxytocin promotes social grooming in bonobos" BioRXiv doi:10.1101/2021.11.30.468796
Brooks, J, Yamamoto S (2021) “The founder sociality hypothesis” Ecology and Evolution 11(21), 14392-14404. doi: 10.1002/ece3.8143
Brooks, J, Yamamoto S (2021) “Response: Commentary: Dog stick chewing: an overlooked instance of tool use?” Frontiers in Psychology 12, 757526. doi:10.3389/fpsyg.2021.757526
Brooks, J*, Yoshimura, H*, Taki, Y* (2021) “Knowledge-based enrichment: development of a novel enrichment device for captive chimpanzees” Zoo Biology 40(5), 398-406. doi:10.1002/zoo.21617
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| Current Status of Research Progress |
Current Status of Research Progress
2: Research has progressed on the whole more than it was originally planned.
Reason
While orders of conducting several projects had to be shifted due to the coronavirus pandemic, I was able to collect data for several of my planned projects at Kumamoto Sanctuary and at Horse Trust, Kagoshima. I could not visit Europe to conduct more bonobo experiments myself, but established new collaborations to combine data from Japan and Europe and America. I am analyzing this data and preparing manuscripts for submission now.
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| Strategy for Future Research Activity |
In the next fiscal years I will continue on the same projects as planned, especially collecting cooperation data in chimpanzees, running a new eye tracking study on eye contact and social affiliation in bonobos and chimpanzees, continue collecting data on bonobo responses to outgroup sounds, and later collect a follow-up project with horses to examine how oxytocin affects co-feeding tolerance. I will present at two international conferences, Animal Behaviour Society 2022 and International Society for Behavioural Ecology 2022, and two domestic conferences (Primatology and Wildlife Science and Japan Society for Animal Psychology).
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