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Effective larval production based on the regulation of bacterial assemblage by microbial-loop and microalgae in rearing waters

Research Project

Project/Area Number 19580222
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field General fisheries
Research InstitutionKinki University

Principal Investigator

EGUCHI Mitsuru  Kinki University, 農学部, 教授 (40176764)

Co-Investigator(Kenkyū-buntansha) 宮下 盛  近畿大学, 農学部, 教授 (80088658)
中川 至純  近畿大学, 水産研究所, 助教 (70399111)
中瀬 玄徳  近畿大学, 水産研究所, COE博士研究員 (40454623)
Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2008: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2007: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords種苗生産 / 微生物ループ / 水作り / 微細藻類 / Roseobacter属細菌 / 細菌群集構造 / バイオコントロール / 増養殖 / ナノクロロプシス / プロバイオティックス / 飼育水 / サプリメント
Research Abstract

「水作り」という言葉がある。養殖魚類の受精卵を収容する飼育水の水質環境を微細藻類により整えることを指す。本研究では微細藻類による飼育水細菌群の制御機構の解明を目的とし、微細藻類の培養液に多く存在する善玉細菌(例: Roseobacter属細菌)の働きと微生物ループの生態学的機能に注目した。善玉細菌は常にビブリオ属魚病細菌の増殖を抑制したが、微細藻類が共存するとその抑制効果が飛躍的に向上した。また、飼育水温の高いクロマグロ仔魚はマダイ仔魚などと異なり、微生物ループを経由した栄養を積極的に利用していた。これは経験的に行われてきた「水作り」を、科学的に検証した初めてのケースといえる。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (20 results)

All 2009 2008 2007

All Journal Article (10 results) (of which Peer Reviewed: 10 results) Presentation (8 results) Book (2 results)

  • [Journal Article] Grazing of protozooplankton assemblages on microalgae in the reanng water of the marble goby, Oxyeleotris marmoralus, during early larval rearing2009

    • Author(s)
      Yoshizumi NAKAGAWA, Mitsuru EGUCHI, FuiFui CHING, Shigeharu SENOO, Shigera MIYASHITA
    • Journal Title

      Aquaculture 57

      Pages: 71-75

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Development and evaluation of a loop-mediated isothermal amplification assay for rapid and simple detection of the pathogen Flavobacterium psychrophilum2009

    • Author(s)
      Erina FUJIWARA-NAGATA, Mitsuru EGUCHI
    • Journal Title

      Journal of Fish Diseases 32(in press)

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Grazing of protozooplankton assemblages on microalgae in the rearing water of the marble goby, Oxyeleotris marmoralus, during carly larval rearing2009

    • Author(s)
      Yoshizumi NAKAGAWA
    • Journal Title

      Aquaculture Science 57(in press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Development and evaluation of a loop-mediated isothermal amplification assay for rapid and simple detection of the pathogen Flavobacterium psychrophilum2009

    • Author(s)
      Erina FUJIWARA-NAGATA
    • Journal Title

      Journal of Fish Diseases (in press)

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Pcific bluefin tuna, Thunnus orientalis, larvae utilizing energy and nutrients of microbial loop2007

    • Author(s)
      Yoshizumi NAKAGAWA, Mitsuru EGUCHI, Shigeru MIYASHITA
    • Journal Title

      Aquaculture 264

      Pages: 83-93

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] between bactenal commujnity structures and mortality of fish larvae in intensive rearing systems2007

    • Author(s)
      Gentoku NAKASE, Yoshizumi NAKAGAWA, Shigeru MIYASHITA, Toshiro NASY, Shigeharu SENOO, Hiroko MATSUBARA, Mitsuru EGUCHI
    • Journal Title

      Fishenes Science 73

      Pages: 784-791

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of bactenal communities in Nannochloropsis sp. cultures used for larval fish production2007

    • Author(s)
      Gentoku NAKASE, Mitsuru EGUCHI
    • Journal Title

      Fishenes Science 73

      Pages: 541-547

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Pacific bluefin tuna, Thunnus orientalis, larvae utilize energy and nutrients of microbial loop2007

    • Author(s)
      Y.Nakagawa
    • Journal Title

      Aquaculture 264

      Pages: 83-93

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Association between bacterial community structures and mortality of fish larvae in intensive rearing systems2007

    • Author(s)
      G.Nakase
    • Journal Title

      Fisheries Science 73

      Pages: 784-791

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Analysis of bacterial communities in Nannochloropsis sp, cultures used for larval fish production2007

    • Author(s)
      G.Nakase
    • Journal Title

      Fisheries Science 73

      Pages: 541-547

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] Investigation of the existence of Roseobacter sp. in Nannochloropsis oculata cultures2008

    • Author(s)
      Sharifah Noor Emilia
    • Organizer
      5^<th> World Fisheries Congress
    • Place of Presentation
      神奈川県横浜市
    • Year and Date
      2008-10-24
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] Ecological function of phytoplankton in larval rearing waters2008

    • Author(s)
      Mitsuru EGUCHI
    • Organizer
      5^<th> World Fisheries Congress
    • Place of Presentation
      神奈川県横浜市
    • Year and Date
      2008-10-22
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] Pacific bluefin tuna larvae utilize energy and nutrients of microbial loop2008

    • Author(s)
      Mitsuru EGUCHI
    • Organizer
      12^<th> International Symposium on Microbial Ecology (ISME12)
    • Place of Presentation
      オーストラリア・ケアンズ
    • Year and Date
      2008-08-19
    • Related Report
      2008 Final Research Report
  • [Presentation] ナノクロロプシスの培養ろ液によるγ-proteobacteriaの増殖抑制2007

    • Author(s)
      中瀬玄徳
    • Organizer
      2007(平成19)年度日本水産学会秋季大会
    • Place of Presentation
      北海道函館市
    • Year and Date
      2007-09-26
    • Related Report
      2008 Final Research Report 2007 Annual Research Report
  • [Presentation] Growth suppression of gamma-proteobactena by Nannochloropsis culture filtrate2007

    • Author(s)
      中瀬玄徳
    • Organizer
      第23回日本微生物生態学会(ISME Asia2007同時開催)
    • Place of Presentation
      愛媛県松山市
    • Year and Date
      2007-09-16
    • Related Report
      2008 Final Research Report
  • [Presentation] Linking microbial loop to higher trophic levels2007

    • Author(s)
      中川至純
    • Organizer
      第23回日本微生物生態学会(ISME Asia2007同時開催)
    • Place of Presentation
      愛媛県松山市
    • Year and Date
      2007-09-16
    • Related Report
      2008 Final Research Report
  • [Presentation] Growth suppression of gamma-proteobacteria by Nannochloropsis culture filtrate2007

    • Author(s)
      G.Nakase
    • Organizer
      第23回日本微生物生態学会
    • Place of Presentation
      愛媛県松山市
    • Related Report
      2007 Annual Research Report
  • [Presentation] Linking microbial loop to hlgher trophic levels2007

    • Author(s)
      Y.Nakagawa
    • Organizer
      第23回日本微生雛態学会
    • Place of Presentation
      愛媛県松山市
    • Related Report
      2007 Annual Research Report
  • [Book] 養殖の餌と水-陰の主役たち(杉田治男編)2008

    • Author(s)
      江口充
    • Publisher
      恒星社厚生閣
    • Related Report
      2008 Final Research Report
  • [Book] 養殖の餌と水-陰の主役たち-(杉田治男編)2008

    • Author(s)
      江口充
    • Publisher
      恒星厚生閣
    • Related Report
      2008 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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