Basic Information

Email Address

• Email Address

  murase.iki.7pkyoto-u.ac.jp

Professional Memberships

• From May 2025

  Society for Experimental Biology
• From Nov. 2024

  Fisheries Society of the British Isles
• From Aug. 2017

  日本魚類学会
• From Jan. 2017

  日本生態学会

Academic Degree

• 24 Mar. 2016

  東京大学修士（農学）
• 19 Mar. 2020

  長崎大学博士（環境科学）

Academic Resume (Undergraduate School/Majors)

• 東京海洋大学, 海洋科学部海洋環境学科, 卒業

Research History

• From Apr. 2026, To Present

  Kyoto University, 白眉センター, 特定助教
• From May 2024, To May 2026

  School of Ocean and Earth Science, University of Southampton, 日本学術振興会海外特別研究員
• From Apr. 2021, To Mar. 2024

  琉球大学 熱帯生物圏研究センター, 日本学術振興会特別研究員PD
• From Apr. 2020, To Mar. 2021

  東京大学 大気海洋研究所, 日本学術振興会特別研究員PD（学位取得に伴う資格変更）
• From Apr. 2019, To Mar. 2020

  長崎大学 水産・環境科学総合研究科, 日本学術振興会特別研究員DC2

ID,URL

• ORCID ID

  0000-0002-5326-155X

• J-Global ID

  202001004141960735

• External link

  https://www.researchgate.net/profile/Iki-Murase

researchmap URL

• https://researchmap.jp/iki-murase

Research

Research Interests

• 結晶多型
• 石灰化
• 初期生活史
• 温暖化
• 緯度クライン
• 通し回遊魚
• 種内変異
• 微量元素比
• 耳石

Research Areas

• Natural sciences, Biogeoscience, 生物地球化学
• Life sciences, Marine/Aquatic life sciences, 魚類生態学

Papers

• Population Genomic Analysis in Wild Medaka Populations: Identifying Candidate Loci for Balancing Selection

  Shingo Fujimoto; Taijun Myosho; Hirozumi Kobayashi; Hiroaki Aoyama; Iki Murase; Bayu K. A. Sumarto; Mitsuharu Yagi; Taiga Kunishima; Masatoshi Matsunami; Ryosuke Kimura

  Ecology and Evolution, 21 Oct. 2026, Peer-reviewed

  
• Resilience of ayu Plecoglossus altivelis to the 2018 flood disaster in Takahashi River, Okayama Prefecture: Insights from mtDNA and otolith analyses

  Kei’ichiro Iguchi; Takeshi Yamashita; Yusuke Takagi; Iki Murase

  Aquaculture Science, Jul. 2026, Peer-reviewed, Last author

  
• Genetic polymorphisms in a mate choice locus are maintained by balancing selection in a wild medaka population

  Shingo Fujimoto; Taijun Myosho; Hirozumi Kobayashi; Hiroaki Aoyama; Iki Murase; Bayu K. A. Sumarto; Mitsuharu Yagi; Taiga Kunishima; Masatoshi Matsunami; Ryosuke Kimura

  08 May 2026

  
• Shorter recruitment periods and higher fecundity in high-latitude populations of the Oryzias latipes species complex

  Shingo Fujimoto; Iki Murase; Hirozumi Kobayashi; Bayu K. A. Sumarto; Mitsuharu Yagi; Kazunori Yamahira

  Population Ecology, Nov. 2025, Peer-reviewed

  
• 平安時代の宇治川の網代で生業として漁獲された氷魚の実相推定

  井口 恵一朗; 村瀬 偉紀; 小川 宏和

  野生生物と社会, May 2025, Peer-reviewed

  
• Evolution of Size‐Fecundity Relationship in Medaka Fish From Different Latitudes

  Shingo Fujimoto; Bayu K. A. Sumarto; Iki Murase; Daniel F. Mokodongan; Taijun Myosho; Mitsuharu Yagi; Satoshi Ansai; Jun Kitano; Satoshi Takeda; Kazunori Yamahira

  Molecular Ecology, 05 Nov. 2024, Peer-reviewed

  
• Rearing in strontium-enriched water induces vaterite otoliths in the Japanese rice fish, Oryzias latipes

  Iki Murase; Tatsuhiko Kawamoto; Norikatsu Akizawa; Takahiro Irie

  Royal Society Open Science, Jun. 2023, Peer-reviewed, Lead author, Corresponding author

  
• High growth performance in the early ontogeny of an amphidromous fish, Ayu Plecoglossus altivelis altivelis, promoted survival during a disastrous river spate

  Iki Murase; Kei'ichiro Iguchi

  Fisheries Management and Ecology, Nov. 2021, Peer-reviewed, Lead author, Corresponding author

  
• Relationship between female body size and egg and larval sizes in Pacific herring Clupea pallasii

  SAYURI TAKEMURA; NORIO SHIRAFUJI; KODAI YAMANE; IKI MURASE; YOKO IWATA; TOMOHIKO KAWAMURA; YOSHIRO WATANABE

  NIPPON SUISAN GAKKAISHI, 15 Nov. 2020, Peer-reviewed

  
• Assessment of growth patterns of amphidromous fish larvae in alternative estuarine nursery habitats along a developed coast

  Iki Murase; Kei'ichiro Iguchi

  Estuarine, Coastal and Shelf Science, Oct. 2020, Peer-reviewed, Lead author, Corresponding author

  
• Facultative amphidromy involving estuaries in an annual amphidromous fish from a subtropical marginal range

  Iki Murase; Kei'ichiro Iguchi

  Journal of Fish Biology, Sep. 2019, Peer-reviewed, Lead author, Corresponding author

  
• 2017年に高梁川に遡上した稚アユのふ化時期の推定

  山田陽喜; 村瀬偉紀; 阿部信一郎

  茨城大学教育学部紀要（自然）, Aug. 2019

  
• Counter-directional latitudinal clines of size at upstream migration between two adjacent water bodies in a Japanese amphidromous fish

  Iki Murase; Tatsuya kawakami; Takahiro irie; Kei'ichiro Iguchi

  Marine Ecology Progress Series, Aug. 2019, Peer-reviewed, Lead author

  
• Migration of adult Pacific herring, Clupea pallasii, around spawning ground revealed by an automated ultrasonic telemetry system

  Iki Murase; Norio Shirafuji; Kodai Yamane; Takashi Kitagawa; Kei Sasaki; Yukio Matsumoto; Yoshiro Watanabe

  Coastal Marine Science, Aug. 2019, Peer-reviewed, Lead author, Corresponding author

  
• Nursery habitat use for larval and juvenile Pacific herring Clupea pallasii in Miyako Bay on the Pacific coast of northern Japan

  Kodai Yamane; Iki Murase; Norio Shirafuji; Akira Hayashi; Yoshitomo Nagakura; Yoshiro Watanabe

  Fisheries Science, Mar. 2019, Peer-reviewed

  
• Literacy of creativity-Expansion of self-nonself circulation theory

  村瀬雅俊; 村瀬偉紀; 村瀬智子

  Journal of Quality Education, Sep. 2018, Peer-reviewed

  
• Variation in growth performance of Ryukyu-ayu, Plecoglossus altivelis ryukyuensis, inferred from otolith analysis

  Iki Murase; Tatsuya Kawakami; Kei’ichiro Iguchi

  Ichthyological Research, 21 May 2018, Peer-reviewed, Lead author, Corresponding author

  
• Towards the Origin of Learning and Playing – From the Perspective of Self-nonself Circulation Theory

  村瀬雅俊; 村瀬偉紀; 村瀬智子

  Journal of Quality Education, Apr. 2017, Peer-reviewed

  
• Morphological differences in the scapula-coracoid of seawater and freshwater fish

  Iki Murase

  Journal of Integrated Creative Studies, Apr. 2017, Peer-reviewed, Lead author, Corresponding author

  Access this paper :

  

Presentations

• Control of otolith growth and biomineralization under experimental conditions

  Murase I; Irie I; Trueman C

  SEB Annual Conference Antwerp 2025

  
• Statistical properties of X-ray intensity output from EPMA with WDS for quantifying the strontium concentration in aragonitic shells

  Murase I; Irie T

  The Society for Experimental Biology Centenary Conference Edinburgh 2023

  
• Rearing in strontium-replete water induces vaterite otoliths in the Japanese rice fish, Oryzias latipes.

  Murase I; Kawamoto T; Akizawa N; Irie T

  第70回日本生態学会, 18 Mar. 2023

  
• A new method to induce polymorphic transformation from aragonite to vaterite in Oryzias otoliths

  Murase I; Irie T

  The Society for Experimental Biology annual 2022 conference

  
• Spatio-temporal variation in life history traits of an amphidromous fish

  Murase I

  4th Japan Eco-Evo English Seminar, 13 Dec. 2021

  
• 生活史初期の高成長が大規模攪乱条件下での生存率を向上させる：2018年西日本豪雨前後における高梁川産アユの成長履歴の比較

  村瀬偉紀; 井口恵一朗

  2021年度日本魚類学会年会

  
• Spatio-temporal variation in life-history traits of an amphidromous fish, ayu: changes in the traits after 19 years

  Murase I; Irie T; Iguchi K

  第68回日本生態学会

  
• 温暖化に伴う水温上昇がアユの生活史特性の地理的変異に及ぼす作用機序の検証

  村瀬偉紀; 入江貴博; 井口恵一朗

  第67回日本生態学会

  
• Counter-directional body size clines within a Japanese amphidromous fish inferred from otolith analysis

  Murase I; Irie T; Iguchi K

  54th European Marine Biology Symposium

  
• 孵化時期に依存した海洋生活期におけるアユの成長様式と経験塩分履歴の個体群内変異

  村瀬偉紀; 井口恵一朗

  三学会合同長崎大会

  
• Geographic variation in growth history and habitat use among local populations of ayu, a migratory fish

  Murase I; Iguchi K

  第66回日本生態学会大会

  
• Variation in phenotypic traits within a fish species

  Murase I

  2018 Kyoto University International Forum on Advanced Future Studies, 24 Oct. 2018

  
• Complexity in life history traits of fish species

  Murase I

  International Conference on Applied Physics and Mathematics 2018, 23 Oct. 2018

  
• 海洋生活期におけるアユの経験塩分履歴と成長履歴の関係: 成育環境としての汽水域の重要性

  村瀬偉紀; 井口恵一朗

  2018年度日本魚類学会年会

  
• Geographic variation in life history traits of the ayu Plecoglossus altivelis altivelis: a report of intraspecific variation in body size cline between the two sides of the Japanese Archipelago

  Murase I

  第34回個体群生態学会大会, 06 Oct. 2018, Invited

  
• Latitudinal variation of life history traits in an amphidromous fish Plecoglossus altivelis altivelis: how does growth before upstream migration affect the performance in rivers?

  Murase I; Irie T; Iguchi K

  Sixth International Otolith Symposium

  
• Geographic variation in life history traits of ayu Plecoglossus altivelis over Japanese Archipelago

  Murase I; Iguchi K

  第65回日本生態学会大会

  
• Spatio-temporal variation in life history traits of an amphidromous fish, Plecoglossus altivelis

  Murase I

  Exploring A Unified View Beyond Complexity

  
• Intraspecific variation in life-history schedule of migratory fish, ayu Plecoglossus altivelis, inferred from otolith analysis

  Murase I; Iguchi K

  The Joint International Symposium between Pukyong National University and Nagasaki University, 04 Dec. 2017

  
• Intra-populational variation in growth pattern among amphidromous migrants of Ryukyu-ayu Plecoglossus altivelis ryukyuensis inferred from otolith analysis

  Murase I; Iguchi K

  The 11th International Workshop on the Oceanography and Fisheries Science of the East China Sea

  
• Geographical variation in growth pattern during juvenile period of ayu

  Murase I; Kawakami T; Iguchi K

  International Symposium: Fisheries Science for Future Generations

  
• 奄美大島役勝川を遡上するリュウキュウアユの成長様式

  村瀬偉紀; 川上達也; 井口恵一朗

  2017年度日本魚類学会年会

  
• 教育活動におけるTAの意義

  村瀬偉紀; 村瀬智子

  2017年度国際教育学会第12年次大会

  
• Geographic variation in life history of ayu species

  Murase I; Irie T; Iguchi K

  Asian Society of Ichthyologists

  
• Intraspecific variation in ecology of fish

  Murase I; Iguchi K

  Transdisciplinary Mie-Symposium 2017 “Origins and Evolutions of Complexity”

  
• 生物にみられる生活史の時空間的変異

  村瀬偉紀; 井口恵一朗

  学際研究会：生体、人体、精神、宇宙－つながりの深層を探る

  
• アユの産卵・遡上時期の経年変動

  村瀬偉紀; 入江貴博; 井口恵一朗

  第64回日本生態学会大会

  
• The fish in the fish: An introduction to the study of fish skeleton

  Murase I

  International and Transdisciplinary Symposium on Advanced Future Studies

  
• パラドックスへの挑戦－教えられない事柄を学ぶには－

  村瀬偉紀; 村瀬雅俊; 村瀬智子

  国際教育学会公開シンポジウム「教育を科学する」

  
• The influence of maternal and paternal effect on herring larvae

  Murase I; Watanabe Y

  2016年度第1回厚岸サンセットセミナー, 09 May 2016

  
• Study on herring, Hokkaido, Japan

  Murase I; Watanabe Y

  International Workshop on Advanced Future Studies

  
• 宮古湾ニシン仔稚魚の分布・成長様式と湾内環境

  村瀬偉紀; 林晃; 岩崎美香理; 白藤徳夫; 長倉義智; 山根広大; 岩田容子; 河村知彦; 渡邊良朗

  平成27年度北海道ブロック水産業関係研究開発推進会 ニシン資源研究会

  
• 北海道春ニシンの漁獲尾数変動

  村瀬偉紀; 瀧谷明朗; 岩田容子; 河村知彦; 渡邊良朗

  2015年度水産海洋学会研究発表大会

  
• ニシン仔稚魚の成長様式と湾内環境

  村瀬偉紀; 渡邊良朗

  2015年度海洋若手会

  
• 厚岸ニシンの漁獲量変動に伴う産卵親魚の生物特性の変化

  村瀬偉紀; 村上直人; 白藤徳夫; 河村知彦; 渡邊良朗

  2014年度水産海洋学会研究発表大会

  
• 宮古湾ニシンの成長様式と湾内環境

  村瀬偉紀; 長倉義智; 白藤徳夫; 山根広大; 北川貴士; 河村知彦; 渡邊良朗

  平成26年度北海道ブロック水産業関係研究開発推進会 ニシン資源研究会

  
• ニシン資源の再生産に関する研究

  村瀬偉紀; 渡邊良朗

  2014年度海洋若手会

  
• マイワシ太平洋系群の成長様式の年級群間比較

  村瀬偉紀; 川端淳; 青柳克; 落合伸一郎; 河村知彦; 渡邊良朗; 根本雅生

  平成26年度日本水産学会春季大会