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Exploring the evolutionary process of migration patterns: early life history and endocrine approach

Research Project

Project/Area Number 21K06296
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 45020:Evolutionary biology-related
Research InstitutionOkinawa Institute of Science and Technology Graduate University

Principal Investigator

Maeda Ken  沖縄科学技術大学院大学, 海洋生態進化発生生物学ユニット, スタッフサイエンティスト (20572829)

Co-Investigator(Kenkyū-buntansha) 飯田 碧  新潟大学, 佐渡自然共生科学センター, 准教授 (30745328)
山崎 曜  国立遺伝学研究所, ゲノム・進化研究系, 助教 (40816021)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2022: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords回遊 / 初期生活史 / 遺伝子発現 / トランスクリプトーム / 甲状腺ホルモン / 卵サイズ / 耳石 / 魚類
Outline of Research at the Start

ヨシノボリ属魚類の回遊パタンは種によって異なり、例えば発育段階に応じて川と海の間を回遊する種や一生川に留まる種などがある。それらは異なる回遊パタンを持つ種から生活史を変化させて進化してきたと考えられるが、回遊パタンの進化を引き起こす生理機構の変化や適応上の理由はほとんど分かっていない。本研究では、初期の発育を制御する甲状腺ホルモンの作用および発現遺伝子を回遊パタンの異なるヨシノボリ属の姉妹種間で比較する。また異なる環境間において回遊パタンや卵サイズを比較することにより、回遊パタン進化の適応的意義を解明する。

Outline of Final Research Achievements

Gene expression patterns and life histories of goby fishes of the genus Rhinogobius were examined to elucidate the evolutionary process of migration patterns. Comparison of multiple amphidromous (migrating between fresh water and the sea) and fluvial (freshwater resident) sister species pairs on Okinawa Island suggested that fluvial species have lower expression levels of genes related to thyroid hormone synthesis, which regulates metamorphosis, and that their morphological changes proceeds more gradually than in amphidromous species. We also investigated the migration patterns and egg sizes of species inhabiting tropical islands in the Philippines and continental rivers in Vietnam, and discussed the environmental conditions under which migration patterns have evolved and maintained by comparing them with species from temperate and subtropical islands of Japan.

Academic Significance and Societal Importance of the Research Achievements

ヨシノボリ属は、回遊パタンや生活史特性が多様であるため、回遊パタンの進化を研究するうえで優れた材料である。ヨシノボリ属について変態に関わる内分泌系の遺伝子発現を初めて明らかにしたことは、回遊パタンの進化機構の全貌解明に向けた大きな一歩である。生活史の面では、これまで知見が乏しかった大陸や熱帯島嶼に生息する種の回遊パタンや卵サイズを明らかにしたことに非常に大きな意義がある。これまで日本産の限られた種の知見に基づいて行われていた生活史進化の適応的意義に関する議論をより深めることができ、各地域の環境が独自の生活史特性を持つ種の進化に関わっていることが示唆された。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (15 results)

All 2023 2022 2021 Other

All Int'l Joint Research (6 results) Journal Article (1 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 5 results) Remarks (1 results)

  • [Int'l Joint Research] Western Philippines University(フィリピン)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Hanoi National University of Education(ベトナム)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Western Philippines University(フィリピン)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Hanoi National University of Education(ベトナム)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Western Philippines University(フィリピン)

    • Related Report
      2021 Research-status Report
  • [Int'l Joint Research] Hanoi National University of Education(ベトナム)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Two new species of Rhinogobius (Gobiiformes: Oxudercidae) from Palawan, Philippines, with their phylogenetic placement2021

    • Author(s)
      MAEDA KEN、SHINZATO CHUYA、KOYANAGI RYO、KUNISHIMA TAIGA、KOBAYASHI HIROZUMI、SATOH NORIYUKI、PALLA HERMINIE P.
    • Journal Title

      Zootaxa

      Volume: 5068 Issue: 1 Pages: 81-98

    • DOI

      10.11646/zootaxa.5068.1.3

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Migration and distribution patterns of freshwater gobies of the genus Rhinogobius in continental rivers and tropical island’s streams2023

    • Author(s)
      Ken Maeda, Midori Iida, Hirozumi Kobayashi, Kotaro Shirai, Herminie P. Palla, Hau Duc Tran
    • Organizer
      The 11th Indo-Pacific Fish Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 島の淡水性回遊魚の分散と生態:佐渡と沖縄の例から2023

    • Author(s)
      飯田碧
    • Organizer
      第55回種生物学シンポジウム 古くて新しい島の生物学:島に生きる動植物の織りなす物語を読み解く
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] ケンムンヒラヨシノボリとヤイマヒラヨシノボリの卵サイズ2023

    • Author(s)
      前田健・山崎曜
    • Organizer
      2022年度ゴリ研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] 海を渡る淡水魚2022

    • Author(s)
      前田健
    • Organizer
      第38回 国際生物学賞記念シンポジウム "魚の生物学:その生態、進化と発生"
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] 沖縄の川の魚の多様性2022

    • Author(s)
      前田健
    • Organizer
      沖縄生物教育研究会創立70周年記念講演会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Diadromous migration of gobies in Vietnam in comparison with other Asian regions2021

    • Author(s)
      Midori Iida, Hirozumi Kobayashi, Hau Duc Tran, Ken Maeda
    • Organizer
      The 2nd National Conference on Ichthyology in Vietnam
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 通し回遊性魚類の幼生の分散と滞留2021

    • Author(s)
      飯田碧
    • Organizer
      2021年日本ベントス学会・日本プランクトン学会 合同大会シンポジウム 分野横断で挑む海洋幼生生態学
    • Related Report
      2021 Research-status Report
    • Invited
  • [Remarks] フィリピンの川から2つのハゼの新種を発見

    • URL

      https://www.oist.jp/ja/news-center/press-releases/36830

    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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