• 2025 Chubu Branch Conference Report(12/11/2025)

The 2025 Annual Meeting of the Chubu Branch of the Zoological Society of Japan was successfully held from Saturday, December 6 to Sunday, December 7, 2025.
I have prepared the report for your review.

Report

Shizuoka Meeting of the Chubu Branch of the Zoological Society of Japan
Congress Chair: Toshinobu Tokumoto (Shizuoka University)
email: tokumoto.toshinobu[at]shizuoka.ac.jp
Please replace at with @ to use.

• FY2025 Chubu Branch Conference: Student and High School / Technical College Student Outstanding Presentation Award(12/8/2025)

In the graduate and undergraduate student division, 22 oral presentations and 16 poster presentations were given, and in the high school and technical college student division, 8 oral presentations and 29 poster presentations were given, from which excellent presentation awards were selected.

Graduate and Undergraduate Student Category

Best Oral Presentation Award (2 awards)
O−18
Elucidation of the regeneration mechanism from cut fragments of Cassiopea xamachana polyps
Yosuke Daigo１, Toru Koike２
1 Shizuoka University, Graduate School of Integrated Science and Technology, 2 Shizuoka University Academic Institute, Global Center for Asian and Regional Research

O−20
Expression dynamics of vasotocin in the brain controlling reproductive behavior in male medaka (Oryzias latipes)
Ayaka Wakazono 1, Nao Kagawa 2Yasunori Furuya3
1 Gifu University / Faculty of Applied Biological Sciences, 2 Kindai University / Faculty of Science and Engineering, 3 Gifu University / Faculty of Education

Best Poster Presentation Award (1 recipient)
P-15
Genes related to parthenogenesis explored through comparative analysis of expressed genes between bisexual and parthenogenetic strains of the geographically parthenogenetic insect, Ephemera ola
Takahito Onobori¹Takefusa Masatake²Koji Toshiro³
1 Shinshu Univ. Graduate School of Science, 2 Univ. of Tsukuba Life and Environmental Sciences, 3 Shinshu Univ. Graduate School of Science

Outstanding Oral Presentation Award (3 recipients)
O-12
Early acquisition of ammonia detoxification capacity in embryos of the terrestrial-breeding amphibian Buergeria buergeri
Satoshi Nakayama¹, Nakamachi Tomoya²Kohei Matsuda²Norifumi Konno²
1 University of Toyama, Graduate School of Science and Engineering, Earth and Life Sciences; 2 University of Toyama, Academic Research Division, College of Science

O-16
sex-determining gene in Dorcus rectusintersexfunction in ovarian development and egg resorption
○ Kanon Yamauchi¹Tomokazu Karehiko²Hiroki Goto²
1Shizuoka University, Graduate School of Integrated Science and Technology, Science; 2Shizuoka University, Faculty of Science, Biological Science

O-19
Comparison of osmoregulatory capacity among three-spined stickleback populations with different freshwater migration timings
Kodai Abe^１, Tobio Kamibe^２, Yoshimi Suzuki^１,Seiichi Mori^３, Makoto Kusakabe^４
1 Shizuoka University, Faculty of Science, Department of Biological Sciences, 2 National Institute of Genetics, 3 Gifu Kyoritsu University, 4 Shizuoka University, Faculty of Science, Department of Fundamental Science

Best Poster Presentation Award (1 award)
P-8
Gene expression profile analysis in soldier-reproductives of the Nevada dampwood termite
○ Mizuha You¹, Katsuto Fujiwara², Kiyoto Maekawa³
1 University of Toyama, Faculty of Science, Biology; 2 AIST, BPRC; 3 University of Toyama, Academic Assembly, Faculty of Science

High School and Technical College Students Category

Best Oral Presentation Award (1 recipient)
O-25
Classification of the pond/marsh type of Candidatus Tridentiger brevispinis proposed within Shizuoka Prefecture
Yamamura Teiko
Shizuoka Institute of Science and Technology Shizuoka Kita High School

Best Poster Presentation Award (1 recipient)
P-25
Decoding Chinese Bamboo Partridge Communication from Their Calls
Mizutani Kashu, Niwa Yu
Hamamatsu Gakugei Junior and Senior High School

Best Oral Presentation Award (1 recipient)
O-26
Investigation into the impact of global warming on deep-sea organisms in Suruga Bay
○Yukimitsu Fujie, Yuki Yoshizawa, (Fac.) Takayoshi Otsu
Numazu National College of Technology

Excellent Poster Presentation Award (4 papers)
P-23
Coelacanth's environment-adapted evolution and the possibility of inhabiting Suruga Bay due to global warming
Riona Mori¹, ○ Hinata Sumi², ○ Saki Nakano³, (Prof.) Takayoshi Otsu⁴
1. Shimada Municipal Shimada Dai-ni Junior High School, 2. Nakatsugawa Municipal Sakamoto Elementary School, 3. Fuji Municipal Fuji Junior High School, 4. Numazu National College of Technology

P-26
Survey of Fish Fauna in Noto Region Rivers Using Environmental DNA (3) - Expansion of the Survey to All of Ishikawa Prefecture through an Inter-School Network
Maho Hoshiba, Hiroki Wada, Issei Taguchi, Kazuki Sakamoto, Tomoki Hoshiba, Kotaro Sekiken, Rikuto Nakamura, Yuto Komai, Gouki Taniguchi, Mai Hayashi, Yushin Hisada
Nanao High School

P-28
Evaluating biodiversity through dragonfly wings
Naho Yamamoto, Kashiwa Mizutani, Kanade Omori, Haru Achiba, Taiga Maruo, Kieki Yamauchi, Tatsuki Kuroda
Hamamatsu Gakugei Junior and Senior High School

P-31
Proposal for a new three-dimensional exhibition method utilizing the behavioral characteristics of the giant isopod
Ituki Nakajima, Yuma Taki, Yui Watanabe, Yuzuki Sato, Ayane Hirota, Ayaka Sano, Kazuma Sato, Mizuki Mano, (Faculty) Takayoshi Otsu
Numazu National College of Technology

The following is a notice published before the event.

• Notice of the FY2025 (Reiwa 7) Chubu Branch Meeting of the Zoological Society of Japan

This year's Chubu Branch Conference will be held at Shizuoka University on Saturday, December 6 and Sunday, December 7, 2025.

Date, venue, etc.
Date: December 6 (Sat) and 7 (Sun), 2025
Venue: Shizuoka University Faculty of Science, Building B 2nd Floor Lecture Room / Building A 2nd Floor Large Conference Room
836 Ohya, Suruga-ku, Shizuoka-shi, Shizuoka 422-8529
https://www.shizuoka.ac.jp/access/index.html

Please
* When visiting,Please use public transportation.If you wish to come by private car, please be sure to contact the inquiry desk below in advance.
* Since there are few restaurants and shops in the neighborhood,Please bring your own lunch.The campus cooperative cafeterias and stores are closed. Beverage vending machines are available for use.

We have posted the program and abstracts. Please download them from the link below. (November 27, 2025)
Program and Abstracts

Tournament entry fee
General: 1,000 yen (Please pay at the venue reception)
Students (High school, Technical college, University, Graduate school): Free

social gathering
This is a valuable opportunity to deepen our exchange, so please do join us.
Date: Saturday, December 6th, Evening ~
Location: Shizuoka University Co-op Second Cafeteria
Social gathering fee: General 5,000 yen, Undergraduate and graduate students 2,000 yen, High school and technical college students 1,000 yen (Please pay at the venue reception)

Schedule leading up to the event
Registration: Wednesday, October 1, 2025 –
Abstract submission: Wednesday, October 1, 2025 – Sunday, November 9, 2025
Social Gathering Registration: Wednesday, October 1, 2025 - Sunday, November 9, 2025
Program Web Publication: Late November 2025 (Tentative)

How to register for participation
(1) Those participating in and presenting at the branch meeting
Please apply from the link below.
FY2025 Participation and Abstract Registration Form (Open from October 1)
https://forms.office.com/r/KRYvR4idbk
Abstract submission is now closed.

Please register via the registration form.
https://forms.office.com/r/mnVdbGEMT1
Advance registration is closed. Please register at the venue reception on the day of the event.

*Presenters, please submit your presentation title and abstract, etc.abstract submission formPlease fill it out and upload it to the link in the form above. The deadline is Sunday, November 9.
*Selecting "Will present (speaker)" under "Presentation Status" in the form will display a link for uploading.
*Those who are not presenting can register even after Monday, November 10.
* The deadline for signing up for the social gathering is Sunday, November 9th.

(2) Those attending only the public symposium
No registration is required. Anyone is welcome to attend (admission is free).

To the Presenters
General presentations are restricted to members of the Zoological Society. Non-members are only permitted to attend as listeners.
High school students, technical college students, undergraduate students, and graduate students can present even if they are non-members.

Presentation Format
Oral presentation or poster presentation.
Oral presentations for undergraduate students, graduate students, and the general public will be held in person.
Oral presentations by high school and technical college students will be held either in person or online (Zoom).
All poster presentations will be held in person.
Please note that the presentation format may be changed depending on the circumstances. Thank you for your understanding.

The time limit for oral presentations is 8 minutes for high school and technical college students (5 minutes for presentation, 2 minutes for Q&A, 1 minute for speaker change), and 13 minutes for university students, graduate students, and the general public (10 minutes for presentation, 2 minutes for Q&A, 1 minute for speaker change).

[Student Presentation Award]
From the oral and poster presentations by high school students, technical college students, undergraduate students, and graduate students, the Best Presentation Award and the Outstanding Presentation Award will be selected, respectively.
Please let us know whether or not you wish to apply for the selection process in the registration form.

Public Symposium
Mechanism of Germ Cell Formation: What We Have Learned from Fish Research
Saturday, December 6, 2025, 1:00 PM – 2:45 PM
* Open to everyone (free of charge). Please feel free to come.

Speaker
Toru Kobayashi (University of Shizuoka)
Mechanisms of Sexual Maturation Revealed by Endocrine Disruption Research

Yukiko Imai (Saitama University)
Exploring meiotic recombination from zebrafish

Surugaya Ryohei (Hokkaido University)
What is ovulation capacity? ―From research toward elucidating the ovulation mechanism in sturgeons―

Contact Information:
Shizuoka Meeting of the Chubu Branch of the Zoological Society of Japan
Congress Chair: Toshinobu Tokumoto (Shizuoka University)
email: tokumoto.toshinobu[at]shizuoka.ac.jp
Please replace at with @ to use.