Academic Staff and Fellows

Associate Professor PhD of Fisheries Science
Department/Life Science  Graduate school/Science

What controls the wide range of behaviors we see in animals? Focusing on the genes that develop in the brain, the center of behavior, fish are used to conduct research into the mechanisms that control behavior.

GFP expression in the avt-egfp transgenic medaka

Research Area Fish Physiology, Behavioral Neuroendocrinology
Research Interests 1. Behavioral changes depend on social hierarchy in fish
2. Neuroendocrinological and genomic responses to social behaviors
3. Studies on molecular and behavioral response to stress
Selected Publications ​​​​​1) Shimomura, Y., M. Inahata, M. Komori, N. Kagawa (2019) Reduction of tryptophan hydroxylase expression in the brain of medaka fish after repeated heat stress. Zool. Sci., DOI: 10.2108/zs180135
2) Kagawa, N., S. Hirose, K. Fujimoto, C. Nomura, Y. Fujita, A. Honda, M. Komori (2017) Social rank-dependent expression of gonadotropin-releasing hormones and kisspeptin in the medaka brain. Gen. Comp. Endocrinol., DOI: 10.1016/j.ygcen.2017.03.001
3) Kagawa, N., A. Honda, A. Zenno, R. Omoto, S. Imanaka, Y. Takehana, K. Naruse (2016) Arginine vasotocin neuronal development and its projection in the adult brain of the medaka. Neurosci. Lett., 613: 47–53.
Research and Achievements
See "Researchmap".
(Undergraduate Course)
Hokkaido University(Faculty of Fisheries)
(Master's/Doctral Course)
Hokkaido University(Graduate School of Fisheries Sciences)

Laboratory of Behavioral Genetics

E-mail kagawa(at)
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Academic Staff and Fellows