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Initiation of oocyte maturation by light cues in jellyfish

Research Project

Project/Area Number 19570198
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Developmental biology
Research InstitutionMiyagi University of Education

Principal Investigator

DEGUCHI Ryusaku  Miyagi University of Education, 教育学部, 准教授 (90302257)

Project Period (FY) 2007 – 2009
Project Status Completed (Fiscal Year 2009)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2008: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2007: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords生殖細胞 / 卵母細胞 / 刺胞動物 / ヒドロ虫 / エダアシクラゲ / 卵成熟 / 放卵 / 放精 / 明暗変化 / 神経ペプチド / タマクラゲ / 光周期
Research Abstract

In the hydrozoan jellyfish Cladonema pacificum, there are two different groups in which spawning is triggered by different photic stimuli : light stimulation after dark (light type) and dark stimulation after light (dark type). This study revealed that the regional distribution, the photic conditions required for spawning, and the size of spawned eggs differ between the two types. The characteristics of the next generation produced in crossbreeding experiments suggest that the two types are caused by genetic factors. The present study also provides evidence that a neuropeptide(s) acts downstream of photoreception and appears essential for spawning in either type of C.pacificum.

Report

(4 results)
  • 2009 Annual Research Report   Final Research Report ( PDF )
  • 2008 Annual Research Report
  • 2007 Annual Research Report
  • Research Products

    (24 results)

All 2009 2008 2007

All Journal Article (9 results) (of which Peer Reviewed: 6 results) Presentation (15 results)

  • [Journal Article] Early development and cleavage pattern of the Japanese purple mussel Septifer virgatus2009

    • Author(s)
      Kurita, Y., Deguchi, R., Wada, H.
    • Journal Title

      Zool.Sci. (accepted)

    • NAID

      120007130835

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Early development and cleavage pattern of the Japanese purple mussel, Septifer virgatus2009

    • Author(s)
      Yoshihisa Kurita
    • Journal Title

      Zoological Science 26

      Pages: 814-820

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] カイヤドリヒラムシの生殖とライフサイクル2009

    • Author(s)
      出口竜作
    • Journal Title

      宮城教育大学紀要 44

      Pages: 89-95

    • NAID

      110007543419

    • Related Report
      2009 Annual Research Report
  • [Journal Article] Novel two-step Ca^<2+> increase and its mechanisms and functions at fertilization in oocytes of the annelidan worm Pseudopotamilla occelata2008

    • Author(s)
      Nakano, T., Kyozuka, K., Deguchi, R.
    • Journal Title

      Dev.Growth.Differ. 50

      Pages: 365-379

    • NAID

      10021096844

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] エダアシクラゲの放卵・放精の光条件2008

    • Author(s)
      出口竜作, 青木瞳, 松田聖, 佐藤英樹
    • Journal Title

      宮城教育大学紀要 43

      Pages: 89-95

    • NAID

      110007058330

    • Related Report
      2009 Final Research Report
  • [Journal Article] Novel two-step Ca^<2+> increase and its mechanisms and functions at fertilization in oocytes of the annelidan worm Pseudopotamilla occelata2008

    • Author(s)
      Takeshi Nakano
    • Journal Title

      Development, Growth and Differentiation 50

      Pages: 365-379

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Journal Article] エダアシクラゲの放卵・放精の光条件2008

    • Author(s)
      出口竜作
    • Journal Title

      宮城教育大学紀要 43

      Pages: 89-95

    • NAID

      110007058330

    • Related Report
      2008 Annual Research Report
  • [Journal Article] Fertilization causes a single Ca^<2+> increase that fully depends on Ca^<2+> influx in oocytes of limpets (Phylum Mollusca, Class Gastropoda)2007

    • Author(s)
      Deguchi, R.
    • Journal Title

      Dev.Biol. 304

      Pages: 652-663

    • Related Report
      2009 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fertilization causes a single Ca^<2+> increase that fully depends on Ca^<2+> influx in oocytes of limpets (Phylum Molluscs, Class Gastropoda)2007

    • Author(s)
      Ryusaku Deguchi
    • Journal Title

      Developmental Biology 304

      Pages: 652-663

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Presentation] ヒラムシ卵の受精嚢内における発生開始機構2009

    • Author(s)
      佐々木博成
    • Organizer
      日本動物学会第80回大会
    • Place of Presentation
      静岡県コンベンションアーツセンターグランシップ
    • Year and Date
      2009-09-19
    • Related Report
      2009 Annual Research Report
  • [Presentation] タマクラゲの放卵と卵内MPFおよびMAPK活性2009

    • Author(s)
      出口竜作
    • Organizer
      日本動物学会第80回大会
    • Place of Presentation
      静岡県コンベンションアーツセンター グランシップ
    • Year and Date
      2009-09-17
    • Related Report
      2009 Final Research Report
  • [Presentation] タマクラゲの放卵と卵内MPFおよびMAPK活性2009

    • Author(s)
      出口竜作
    • Organizer
      日本動物学会第80回大会
    • Place of Presentation
      静岡県コンベンションアーツセンターグランシップ
    • Year and Date
      2009-09-17
    • Related Report
      2009 Annual Research Report
  • [Presentation] ネマトステラの精巣片に対するcAMPの影響2009

    • Author(s)
      吉川洋史
    • Organizer
      日本動物学会第80回大会
    • Place of Presentation
      静岡県コンベンションアーツセンターグランシップ
    • Year and Date
      2009-09-17
    • Related Report
      2009 Annual Research Report
  • [Presentation] エダアシクラゲにおける神経ペプチド陽性細胞の形状と分布2009

    • Author(s)
      佐藤英樹
    • Organizer
      日本動物学会第80回大会
    • Place of Presentation
      静岡県コンベンションアーツセンターグランシップ
    • Year and Date
      2009-09-17
    • Related Report
      2009 Annual Research Report
  • [Presentation] The effects of hydra neuropeptides on the initiation of oocyte maturation and spawning in jellyfish Cytaeis uchidae2008

    • Author(s)
      Noriyo Takeda
    • Organizer
      Frontiers in Developmental Biology
    • Place of Presentation
      VVF Beiambra"La Badine"GIENS, FRANCE
    • Year and Date
      2008-09-15
    • Related Report
      2008 Annual Research Report
  • [Presentation] イソギンチャクの受精時における卵内のMAPキナーゼの役割2008

    • Author(s)
      阿部香織
    • Organizer
      日本動物学会第79回大会
    • Place of Presentation
      福岡大学七隅キャンパス(福岡県福岡市城南区)
    • Year and Date
      2008-09-06
    • Related Report
      2008 Annual Research Report
  • [Presentation] ペプチド性シグナル分子がエダアシクラゲの放卵・放精に与える影響2008

    • Author(s)
      松田聖
    • Organizer
      日本動物学会第79回大会
    • Place of Presentation
      福岡大学七隅キャンパス(福岡県福岡市城南区)
    • Year and Date
      2008-09-05
    • Related Report
      2008 Annual Research Report
  • [Presentation] カイヤドリヒラムシの発生開始機構の解析2008

    • Author(s)
      佐々木博成
    • Organizer
      日本動物学会第79回大会
    • Place of Presentation
      福岡大学七隅キャンパス(福岡県福岡市城南区)
    • Year and Date
      2008-09-05
    • Related Report
      2008 Annual Research Report
  • [Presentation] Roles of intracellular Ca^<2+> increase and MAP kinase dephosphorylation at fertilization in jellyfish eggs2008

    • Author(s)
      Deguchi, R.
    • Organizer
      国際ワークショップ「Oocyte Maturation and the Cell Cycle」における招待講演
    • Place of Presentation
      京都ガーデンパレス
    • Year and Date
      2008-03-07
    • Related Report
      2009 Final Research Report
  • [Presentation] Roles of intracellular Ca^<2+> increase and MAP kinase dephosphorylation at fertilization in jellyfish eggs2008

    • Author(s)
      出口 竜作
    • Organizer
      Oocyte Maturation and the Cell Cycle(オーガナイザー:岸本健雄、千葉和義)
    • Place of Presentation
      京都ガーデンパレス
    • Year and Date
      2008-03-07
    • Related Report
      2007 Annual Research Report
  • [Presentation] 動物の卵成熟および発生の開始機構の比較解析2007

    • Author(s)
      出口竜作
    • Organizer
      日本動物学会第78回大会 (奨励賞受賞)
    • Place of Presentation
      弘前大学文京町キャンパス
    • Year and Date
      2007-09-20
    • Related Report
      2009 Final Research Report
  • [Presentation] 動物の卵成熟および発生の開始機構の比較解析2007

    • Author(s)
      出口 竜作
    • Organizer
      日本動物学会第78回大会
    • Place of Presentation
      弘前大学文京町キャンパス
    • Year and Date
      2007-09-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] 光刺激によるエダアシクラゲの卵成熟開始機構の解析2007

    • Author(s)
      青木 瞳
    • Organizer
      日本動物学会第78回大会
    • Place of Presentation
      弘前大学文京町キャンパス
    • Year and Date
      2007-09-20
    • Related Report
      2007 Annual Research Report
  • [Presentation] タマクラゲのヒドラ神経ペプチドによる放卵誘起機構2007

    • Author(s)
      竹田 典代
    • Organizer
      日本動物学会第78回大会
    • Place of Presentation
      弘前大学文京町キャンパス
    • Year and Date
      2007-09-20
    • Related Report
      2007 Annual Research Report

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

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