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Effects of learning on the predator recognition and defensive behavior in hatchery-reared fish: basic studies for releasing strategy

Research Project

Project/Area Number 17K17949
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Aquatic bioproduction science
Ecology/Environment
Research InstitutionNagasaki University

Principal Investigator

KAWABATA Yuuki  長崎大学, 水産・環境科学総合研究科(水産), 准教授 (50606712)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords人工飼育魚 / 人工種苗 / 逃避 / 離底行動 / 学習 / 観察学習 / 対捕食者行動 / 被食回避 / 生態・行動 / 行動生態
Outline of Final Research Achievements

We conditioned the hatchery-reared Japanese flounder juveniles to predation by allowing them to sense their conspecifics being preyed upon either by the predatory crab or by the large predatory fish. We then measured the feeding behaviors (off-bottom swimming) of conditioned (to crab and fish) and naive flounders, in three different situations: exposed to crab, exposed to large fish, and exposed to no animals. In all situations, the flounder conditioned to crab left the bottom more frequently and stayed in the water column for longer period. Whereas, the fish conditioned to the large fish left the bottom less frequently and stayed in the water column for shorter period. These results suggest that the hatchery-reared fish change the behavioral pattern depending on the type of predator to be conditioned.

Academic Significance and Societal Importance of the Research Achievements

天然魚の数を安定・増加させるために人工飼育魚を放流する「栽培漁業」が世界中で行なわれていますが、放流した稚魚が大型の捕食者に食べられてしまうという問題があります。その対策のひとつとして、放流前に稚魚に捕食者を学習させる方法があります。しかし、野外には様々なタイプの捕食者が存在するにも関わらず、これまでは1種の捕食者のみの学習しか行われてきませんでした。今回の研究成果は1種の捕食者の学習ではその捕食者に対して有効な防衛行動が取れるようになるが、別の捕食者に対しては有効ではなく、むしろ食われやすくなる可能性すらあることを示しています。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (18 results)

All 2019 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (11 results) (of which Int'l Joint Research: 2 results) Book (1 results) Remarks (1 results)

  • [Int'l Joint Research] Italian National Research Council(イタリア)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Effect of initial body orientation on escape probability of prey fish escaping from predators.2018

    • Author(s)
      Kimura H, Kawabata Y
    • Journal Title

      Biology Open

      Volume: 7

    • DOI

      10.1242/bio.023812

    • NAID

      120006987955

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A miniaturized threshold-triggered acceleration data-logger for recording burst movements of aquatic animals2018

    • Author(s)
      Nishiumi Nozomi、Matsuo Ayane、Kawabe Ryo、Payne Nicholas、Huveneers Charlie、Watanabe Yuuki Y.、Kawabata Yuuki
    • Journal Title

      The Journal of Experimental Biology

      Volume: 221

    • DOI

      10.1242/jeb.172346

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Diel variation in home range size and precise returning ability after spawning migration of a coral reef grouper Epinephelus ongus: implications for effective marine protected area design2018

    • Author(s)
      Atsushi Nanami, Hiromichi Mitamura, Taku Sato, Tomofumi Yamaguchi, Ken Yamamoto, Ryo Kawabe, Kiyoshi Soyano, Nobuaki Arai, Yuuki Kawabata
    • Journal Title

      Marine Ecology Progress Series

      Volume: 606 Pages: 119-132

    • DOI

      10.3354/meps12779

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of initial body orientation on escape probability in prey fish escaping from predators.?2017

    • Author(s)
      Kimura H, Kawabata Y
    • Journal Title

      BioRxiv

      Volume: - Pages: 1-25

    • DOI

      10.1101/134494

    • NAID

      120006987955

    • Related Report
      2017 Research-status Report
    • Open Access
  • [Presentation] 群泳するボラ稚魚の逃避行動-群れが同調して逃避するのは普遍的か?2019

    • Author(s)
      見山航希・河端雄毅
    • Organizer
      魚類生態研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] マダイ稚魚の側線での逃避行動~頭側にある泣き所~2019

    • Author(s)
      木村 響・河端雄毅
    • Organizer
      魚類生態研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 魚類にはどの方向から接近すると良いのか?:逃避開始距離に着目して2019

    • Author(s)
      山中 遼・米山和良・河端雄毅
    • Organizer
      魚類生態研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] カニはなぜ横歩きするのか:エビとカニの比較解析から適応的意義を探る2019

    • Author(s)
      高倉千紘・岡田二郎・河端雄毅
    • Organizer
      魚類生態研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] カニの左右移動の利点を探る―ベニツケガニの逃避行動の解析―2018

    • Author(s)
      高倉千紘・河端雄毅・岡田二郎
    • Organizer
      日本動物行動学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ステレオカメラによる魚類の逃避行動の野外計測2018

    • Author(s)
      山中 遼・米山和良・河端雄毅
    • Organizer
      日本動物行動学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ヒラメ稚魚の離底行動に及ぼす捕食者学習効果2018

    • Author(s)
      小池あい・河端雄毅
    • Organizer
      魚類生態研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] ステレオビデオカメラによる魚類の逃避開始距離の野外計測2018

    • Author(s)
      山中 遼・米山和良・河端雄毅
    • Organizer
      魚類生態研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] マダイ稚魚は背後の捕食者に気付くのか?2018

    • Author(s)
      木村 響・河端雄毅
    • Organizer
      魚類生態研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Effect of initial body orientation on escape probability in prey fish escaping from predators.2018

    • Author(s)
      Hibiki Kimura, Yuuki Kawabata
    • Organizer
      The Annual meeting of society for integrative and comparative biology
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Effect of initial body orientation on escape probability in prey fish escaping from predators.2017

    • Author(s)
      Hibiki Kimura, Yuuki Kawabata
    • Organizer
      2017 ECS Workshop
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Book] 海洋保護区で魚を守る-サンゴ礁に暮らすナミハタのはなし2018

    • Author(s)
      名波 敦, 太田 格, 秋田雄一, 河端雄毅
    • Total Pages
      228
    • Publisher
      恒星社厚生閣
    • ISBN
      4769916264
    • Related Report
      2018 Annual Research Report
  • [Remarks] 河端研究室ホームページ

    • URL

      https://sites.google.com/site/kawabatalaboratory/home

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2020-03-30  

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