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Development of coral spawning monitoring device using mobile communications network

Research Project

Project/Area Number 23K20289
Project/Area Number (Other) 20H03066 (2020-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2020-2023)
Section一般
Review Section Basic Section 40030:Aquatic bioproduction science-related
Research InstitutionFisheries Research and Education Agency

Principal Investigator

Suzuki Go  国立研究開発法人水産研究・教育機構, 水産技術研究所(長崎), 主任研究員 (30533319)

Co-Investigator(Kenkyū-buntansha) 善岡 祐輝  沖縄科学技術大学院大学, マリンゲノミックスユニット, リサーチフェロー (20982169)
竹垣 草世香 (向草世香)  国立研究開発法人水産研究・教育機構, 水産資源研究所(横浜), 主任研究員 (30546106)
酒井 一彦  琉球大学, 熱帯生物圏研究センター, 協力研究員 (50153838)
新里 宙也  東京大学, 大気海洋研究所, 准教授 (70524726)
Project Period (FY) 2024-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2024: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2023: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2022: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2021: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2020: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywordsミドリイシ / フェノロジー / 受精効率 / 幼生加入 / ミドリイシ属サンゴ / 一斉産卵 / 遠隔長期間観察 / トランスクリプトーム解析
Outline of Research at the Start

多くのサンゴは年1回の同時一斉産卵という繁殖により、大量の幼生を供給する。加入の変動を決定する上で『同時一斉産卵の同調性』が鍵となると考え、幼生加入量と産卵同調性との関係について注目した。一斉産卵の同調は、空間スケールや種によって「ずれ」が生じる上、環境条件と連動した年変動があると予想される。そこで、本研究では、一斉産卵を多点同時観測することで、個体群レベルにおける産卵同調の実態を解明することを目指す。多点同時観測を低コストで実現するため、スマートフォンを活用し、既存の携帯通信ネットワークを利用するシステムを開発する。さらに、産卵に関わる遺伝子の挙動を明らかにし、産卵予測技術も実用化する。

Outline of Final Research Achievements

Coral spawning is a unique reproductive behavior known as “synchronized mass spawning.” Accurate prediction of the timing of this synchronized spawning is crucial for understanding the actual reproductive dynamics of corals. In this study, we developed a spawning monitoring device that utilizes the nationwide mobile phone network infrastructure to record spawning events using cylindrical plankton nets and mobile phones.Using this device, we observed spawning dates over a wide area and found that spawning was delayed in the eastern and western parts of even small bays. Additionally, we developed a larval recruitment model that accounts for changes in fertilization rates before and after bleaching. Furthermore, transcriptomic analysis identified multiple coral genes whose expression increases in preparation for spawning.

Academic Significance and Societal Importance of the Research Achievements

サンゴ一斉産卵の観測装置の開発については、コスト面や運用面で課題も残されたものの、広範囲での同時モニタリングが可能な基盤を提供することができた。幼生加入量の予測モデルや遺伝子を用いた産卵日予測技術の完成によって、サンゴの一斉産卵メカニズムを解明し、サンゴ礁の修復や保全策を効果的に策定することが可能になると期待される。

Report

(6 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (5 results)

All 2024 2023 2022

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (1 results)

  • [Journal Article] New moon spawning of Acropora divaricata in the Sakishima Islands, Japan2024

    • Author(s)
      Suzuki Go、Tashiro Satokuni、Suhara Yuri、Shimada Go
    • Journal Title

      Coral Reefs

      Volume: 43 Issue: 4 Pages: 1145-1151

    • DOI

      10.1007/s00338-024-02519-3

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Genes possibly related to symbiosis in early life stages of Acropora tenuis inoculated with Symbiodinium microadriaticum2023

    • Author(s)
      Yoshioka Yuki、Chiu Yi-Ling、Uchida Taiga、Yamashita Hiroshi、Suzuki Go、Shinzato Chuya
    • Journal Title

      Communications Biology

      Volume: 6 Issue: 1 Pages: 1-11

    • DOI

      10.1038/s42003-023-05350-8

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Larval transcriptomic responses of a stony coral, Acropora tenuis, during initial contact with the native symbiont, Symbiodinium microadriaticum2022

    • Author(s)
      Yoshioka Yuki、Yamashita Hiroshi、Suzuki Go、Shinzato Chuya
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 2854-2854

    • DOI

      10.1038/s41598-022-06822-3

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Comparative genomics highlight the importance of lineage-specific gene families in evolutionary divergence of the coral genus, Montipora2022

    • Author(s)
      Yoshioka Yuki、Suzuki Go、Zayasu Yuna、Yamashita Hiroshi、Shinzato Chuya
    • Journal Title

      BMC Ecology and Evolution

      Volume: 22 Issue: 1 Pages: 71-71

    • DOI

      10.1186/s12862-022-02023-8

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] スマートフォンの携帯通信網を利用したミドリイシ属サンゴの産卵観測装置の開発2024

    • Author(s)
      鈴木 豪,田代 郷国, 善岡祐輝, 新里宙也, 酒井一彦
    • Organizer
      日本サンゴ礁学会第27回大会
    • Related Report
      2024 Annual Research Report

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Published: 2020-04-28   Modified: 2026-01-16  

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