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Comparative studies on seasonal reproduction of fish in tropical monsoon environments

Research Project

Project/Area Number 16H05796
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Aquatic life science
Research InstitutionUniversity of the Ryukyus

Principal Investigator

TAKEMURA Akihiro  琉球大学, 理学部, 教授 (40222103)

Co-Investigator(Kenkyū-buntansha) 竹内 悠記  早稲田大学, 理工学術院, 助教 (00754904)
Research Collaborator NGUYEN Ngoc Phuoc  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥17,030,000 (Direct Cost: ¥13,100,000、Indirect Cost: ¥3,930,000)
Fiscal Year 2018: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2016: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Keywordsベトナム / ゴマアイゴ / 日長 / 水温 / 栄養 / 熱帯モンスーン気候 / アイゴ / 雨季
Outline of Final Research Achievements

The aim of this study was to evaluate involvement of periodical changes in environmental factors in tropical waters in reproductive activity of reef fishes. When the goldlined spinefoot Siganus guttatus were collected monthly in the lagoon, Hue city, Vietnam, the gonadal activity of this species increased from April to May, suggesting that increases in water temperature and photoperiod are related to initiation of gonadal development in this species. Realtime quantitative PCR revealed that the transcript levels of leptin in the brain and liver increased when fish were reared under food-limited conditions, suggesting that food availability becomes a driver of gonadal development of this species, It is concluded that the goldlined spinefoot inhabiting in Vietnam shares characteristics of environmental perception between tropical and subtropical waters.

Academic Significance and Societal Importance of the Research Achievements

熱帯モンスーン気候帯は雨季と乾季の季節変化を示すが、赤道から南北へ離れるに従って、日長や温度の周年変化が現れるようになる。これまで、インドネシア(中部ジャワ)や沖縄で同じ手法を用いて行ってきた結果と比較した場合、ベトナム中部に生息するゴマアイゴは、熱帯と亜熱帯の環境変動を巧みに利用した繁殖戦略を持っていることが明らかとなった。これらの結果は、当該地域の水産業の振興に利用できる考えられる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (18 results)

All 2018 2017 2016 Other

All Int'l Joint Research (4 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results) Presentation (7 results) (of which Int'l Joint Research: 5 results,  Invited: 1 results) Book (1 results) Remarks (2 results)

  • [Int'l Joint Research] フエ農林大学(ベトナム)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] フエ農林大学(ベトナム)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] フエ農林大学(ベトナム)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research] 韓国海洋科学技術院(韓国)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Changes in mRNA abundance of insulin-like growth factors in the brain and liver of a tropical damselfish, Chrysiptera cyanea, in relation to seasonal and food-manipulated reproduction2018

    • Author(s)
      Mahardini A, Takeuchi Y, Dinda R, Takekata H, Takemura A
    • Journal Title

      General and Comparative Endocrinology

      Volume: 269 Pages: 112-121

    • DOI

      10.1016/j.ygcen.2018.09.001

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Trial of whole-organ and whole-body clearing in fish2018

    • Author(s)
      宇田川伸吾・矢田文・竹村明洋
    • Journal Title

      Japanese Journal of Ichthyology

      Volume: 65 Issue: 1 Pages: 49-57

    • DOI

      10.11369/jji.17-045

    • NAID

      130006726308

    • ISSN
      0021-5090, 1884-7374
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tide-related changes in mrna abundance of aromatases and estrogen receptors in the ovary and brain of the threespot wrasse Halichoeres trimaculatus2018

    • Author(s)
      Oh DJ, Hur SP, Bouchekioua S, Takeuchi Y, Udagawa S, Aluru N, Park YJ, Park JG, Kim SJ, Moon TW, Vijayan MM, Takemura A
    • Journal Title

      Ocean Science Journal

      Volume: 印刷中

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effects of temperature and melatonin on day-night expression patterns of arginine vasotocin and isotocin mRNA in the diencephalon of a temperate wrasse Halichoeres tenuispinis2018

    • Author(s)
      Bouchekioua S, Hur SP, Takeuchi Y, Lee YD, Takemura A
    • Journal Title

      Fish Physiology and Biochemistry

      Volume: 印刷中 Issue: 3 Pages: 817-828

    • DOI

      10.1007/s10695-018-0471-7

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Long-day conditions with green light stimulate mRNA expressions of insulin-like growth factors in the liver of a tropical fish2018

    • Author(s)
      Yamauchi, C., Miyagi, H., Mahardini, A., Takemura, A.
    • Organizer
      13th International Congress on the Biology of Fish.
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Molecular cloning of insulin-like growth factors and its expression in the tissues of the sapphire devil, a tropical damselfis2018

    • Author(s)
      Rizki, R., Mahardini, A., Takekata, H., Takemura, A.
    • Organizer
      日本動物学会第89回大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 齢同調性産卵を示すゴマアイゴにおける時計遺伝子の月光応答および砂時計型月齢タイマー機構2018

    • Author(s)
      岡野俊行, 竹内悠記, 兜森 椋, 山内千裕, 宮城ひとみ, 竹村明洋, 岡野恵子
    • Organizer
      日本分子生物学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Involvement of insulin-like growth factors in the reproduction of tropical fishes in response to nutritive condition2017

    • Author(s)
      Mahardini A, Miyagi H, Yamauchi C, Takeuchi Y, Takemura A
    • Organizer
      11th International Workshop on the Oceanography and Fishery Science in the East China Sea
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Food availability as an additional permissive factor for gonadal activity in the tropical goldlined-spinefoot rabbitfish2016

    • Author(s)
      Mahardini, A., Miyagi, H., Nakatani, S., Takeuchi, Y., Ayson, F.G., de Jesus-Ayson, E.G.T. and Takemura, A.
    • Organizer
      Joint events of the 22nd International Congress of Zoology and the 87th meeting of Zoological Society of Japan
    • Place of Presentation
      沖縄コンベンションセンター(沖縄県宜野湾市)
    • Year and Date
      2016-11-14
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] How do fishes know the time for getting up and going to bed in ocean?2016

    • Author(s)
      Takemura, A., Takeuchi, Y. and Hur, S.P.
    • Organizer
      The International Conference of the Genetics Society of Korea, 2016
    • Place of Presentation
      Ramada Plaza Jeju Hotel(韓国済州市)
    • Year and Date
      2016-11-10
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Seasonal reproduction of a reef fish in tropical monsoon2016

    • Author(s)
      Mahardini, A., Miyagi, H., Nakatani, S., Takeuchi, Y. and Takemura, A.
    • Organizer
      The 64th NIBB Conference Evolution of Seasonal Timers
    • Place of Presentation
      基礎生物学研究所(愛知県岡崎市)
    • Year and Date
      2016-04-22
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Book] ホルモンから見た生命現象と進化2016

    • Author(s)
      竹村明洋
    • Total Pages
      280
    • Publisher
      裳華房
    • Related Report
      2016 Annual Research Report
  • [Remarks] 竹村研究室のホームページ

    • URL

      http://www.takemura-lab.jp/index

    • Related Report
      2018 Annual Research Report 2017 Annual Research Report
  • [Remarks] Welcome to Takemura's Laboratory

    • URL

      http://www.takemura-lab.jp

    • Related Report
      2016 Annual Research Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

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