SOMA TOMIHARA

Last Updated :2026/01/07

Affiliations, Positions
Graduate School of Integrated Sciences for Life, Assistant Professor
E-mail
tomiharahiroshima-u.ac.jp
Self-introduction
My research focuses on the neuroendocrine systems underlying animal reproduction and their evolution.We primarily use medaka relatives as model organisms and utilize both experimental approaches and bioinformatic analyses.

Basic Information

Major Professional Backgrounds

  • 2025/04/01, Hiroshima University, Graduate School of Integrated Sciences for Life, Assistant Professor
  • 2022/04/01, 2024/03/31, Japan Society for the Promotion of Science, Reserch Fellow PD
  • 2019/04/01, 2022/03/31, Japan Society for the Promotion of Science, Reserch Fellow DC1

Academic Degrees

  • The University of Tokyo
  • The University of Tokyo

Educational Activity

  • [Bachelor Degree Program] School of Science : Biological Sciences : Biology
  • [Master's Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Mathematical and Life Sciences
  • [Master's Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Biomedical Science
  • [Doctoral Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Mathematical and Life Sciences
  • [Doctoral Program] Graduate School of Integrated Sciences for Life : Division of Integrated Sciences for Life : Program of Biomedical Science

Research Fields

  • Biology;Basic biology;Animal physiology / Animal behavior
  • Biology;Basic biology;Genetics / Chromosome dynamics

Research Keywords

  • Chromosome evolution
  • Sex chromosome
  • Sexual behavior
  • Medaka relatives
  • Neuroendocrinology
  • Reproductive Biology

Affiliated Academic Societies

  • Society for Neuroscience
  • The Japan Society for Comparative Endocrinology
  • Zoological Society of Japan

Educational Activity

Course in Charge

  1. 2025, Graduate Education (Master's Program) , Intensive, Introduction to Basic Science Researcher
  2. 2025, Liberal Arts Education Program1, 2Term, Introductory Seminar for First-Year Students
  3. 2025, Undergraduate Education, 4Term, Biochemistry A
  4. 2025, Undergraduate Education, Second Semester, Seminar for Functional Genomics
  5. 2025, Undergraduate Education, Second Semester, Practice for Fundamental Biology II
  6. 2025, Undergraduate Education, Second Semester, Practice for Fundamental Biology IV
  7. 2025, Undergraduate Education, First Semester, Practice for Fundamental Biology IV
  8. 2025, Undergraduate Education, 3Term, Laboratory Work in Biology A
  9. 2025, Graduate Education (Master's Program) , 3Term, Biomedical Science Seminar A
  10. 2025, Graduate Education (Master's Program) , 3Term, Biomedical Science Seminar B
  11. 2025, Graduate Education (Doctoral Program) , 3Term, Biomedical Science Seminar C
  12. 2025, Graduate Education (Doctoral Program) , 3Term, Biomedical Science Seminar D
  13. 2025, Graduate Education (Doctoral Program) , 3Term, Biomedical Science Seminar E

Research Activities

Academic Papers

  1. Sexual receptivity increases in synchrony with the ovulatory cycle in female medaka, bioRxiv, 20240808
  2. Long-lasting redundant gnrh1/3 expression in GnRH neurons enabled apparent switching of paralog usage during evolution, iScience, 27(3), 20240315
  3. Neuropeptide FF indirectly affects testicular morphogenesis and functions in medaka, Proceedings of the National Academy of Sciences, 119(46), 20221116
  4. Gene knockout analysis reveals essentiality of estrogen receptor beta1 (Esr2a) for female reproduction in medaka, Scientific Reports, 9(1), 20190620
  5. ★, Establishment of open-source semi-automated behavioral analysis system and quantification of the difference of sexual motivation between laboratory and wild strains., Scientific Reports, 20210525

External Funds

Acceptance Results of Competitive Funds

  1. 2025, 2029
  2. 2024, 2027
  3. 2022, 2025
  4. 2019, 2022