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Does multi-specific synchronous spawning cause hybridization and speciation in Acropora?

Research Project

Project/Area Number 17K07545
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Biodiversity/Systematics
Research InstitutionOkinawa National College of Technology

Principal Investigator

Isomura Naoko  沖縄工業高等専門学校, 生物資源工学科, 准教授 (90376989)

Co-Investigator(Kenkyū-buntansha) 深見 裕伸  宮崎大学, 農学部, 教授 (50402756)
守田 昌哉  琉球大学, 熱帯生物圏研究センター, 准教授 (80535302)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords雑種種分化 / ミドリイシ / 遺伝子浸透 / 多種同調産卵 / 雑種体形成 / 地域における多種同調産卵頻度の違い / 種内同調産卵のばらつき / ミドリイシ属サンゴ / 交雑
Outline of Final Research Achievements

Our study aims are to elucidate the effect of frequency about multi-specific synchronous spawning in Acropora on introgression and hybridization-speciation. We set two study sites, one was Akajima Island where multi-specific synchronous spawning was found every year, another was Sesoko Island where multi-specific synchronous spawning did not always occur. From field survey and genetic analyses about Acropora populations in the two sites, we found results as follows: 1) In Sesoko Island, multi-specific synchronous spawning was found irregularly, 2) In Akajima Island, remarkable introgression was confirmed between Acropora florida and A. gemmifera they have almost same spawning time.
Now we continue to perform genetic analyses about Acropora population in Sesoko Island, by the results of the population in Akajima Island, we concluded that multi-specific synchronous spawning may affect introgression among Acropora.

Academic Significance and Societal Importance of the Research Achievements

ミドリイシ属は、多種多様な形態を示す約150種から構成される有藻性イシサンゴ類の中で最大のグループである。この多様性がどのように生じてきたかは長い間謎であり、雑種種分化によると考えられてきた。今回の課題を含めた代表者らの研究から、そもそも物理的に雑種体を生じるために必要な多種同調産卵は限られた地域でのみみられること、さらに多種同調産卵がみられる地域のミドリイシでは遺伝子浸透は生じているものの、雑種体が種として確立・継続していくにはいくつもの条件をクリアする必要があることがわかった。以上からミドリイシの多様化には、物理的に種間交配できる多種同調産卵が重要な役割を担っていると考えられた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (16 results)

All 2020 2019 2018 2017 Other

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 1 results) Book (3 results) Remarks (2 results)

  • [Journal Article] Reproductive strategies in the intercrossing corals Acropora donei and A. tenuis to prevent hybridization2019

    • Author(s)
      Masaya Morita, Seiya Kitanobo, Ryo Nozu, Kenji Iwao, Hironobu Fukami, Naoko Isomura
    • Journal Title

      Coral Reefs

      Volume: 38 Issue: 6 Pages: 1211-1223

    • DOI

      10.1007/s00338-019-01839-z

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Maternal inheritance of F1 hybrid morphology and colony shape in the coral genus Acropora2019

    • Author(s)
      Hironobu Fukami, Kenji Iwao, Naoki H Kumagai, Masaya Morita, Naoko Isomura
    • Journal Title

      Peer J

      Volume: 7 Pages: e6429-e6429

    • DOI

      10.7717/peerj.6429

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Neurotransmitters in hermatypic coral, Acropora spp., and its contribution to synchronous spawning during reproductive event2018

    • Author(s)
      Junsei Taira, Itsuki Higa, Eito Tsuchida, Naoko Isomura, Akira Iguchi
    • Journal Title

      Biochemical and Biophysical Research Communications

      Volume: 501 Issue: 1 Pages: 80-84

    • DOI

      10.1016/j.bbrc.2018.04.170

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 枝サンゴ骨格の折損挙動調査―四点曲げ強度特性の評価―2017

    • Author(s)
      政木清孝・上里優貴・磯村尚子・山本広美・久森紀之
    • Journal Title

      材料試験技術

      Volume: 62 Pages: 131-136

    • NAID

      40021205550

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 多種同調産卵によるミドリイシ属サンゴ集団の遺伝的関係への影響2020

    • Author(s)
      磯村尚子・菊地泰生・志村晶史・袰岩美月・安田仁奈・深見裕伸
    • Organizer
      日本生態学会第67回大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] The genes expression of hormone and neuronal transmitter receptor in relation to gametogenesis and spawning in Acropora intermedia2019

    • Author(s)
      Isomura N and Yogi T
    • Organizer
      4th Asian Marine Biology Symposium
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 多種同調産卵する地域におけるミドリイシ属サンゴ集団の遺伝的関係2019

    • Author(s)
      磯村尚子・原口弦大・菊地泰生・志村晶史・袰岩美月・安田仁奈・深見裕伸
    • Organizer
      2019年日本ベントス学会・日本プランクトン学会合同大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] トゲスギミドリイシの繁殖における白化の影響2019

    • Author(s)
      磯村尚子・仲田鈴・上江洲慶多・具志美香子
    • Organizer
      日本生態学会第66回大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 沖縄県瀬底島の南端地先海域における有藻性イシサンゴ類の産卵パターンと生殖様式2018

    • Author(s)
      目﨑 拓真・磯村 尚子・戸篠 祥・林 徹・具志 美香子・深見 裕伸
    • Organizer
      日本サンゴ礁学会第21回大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 雑種体を形成するミドリイシ属サンゴ集団の遺伝的関係2018

    • Author(s)
      磯村尚子・Jean-Francois Flot・Catalina Ramirez-Portilla・守田昌哉・深見裕伸
    • Organizer
      日本生態学会第65回大会
    • Related Report
      2017 Research-status Report
  • [Presentation] ミドリイシ属サンゴの雑種体はすべて生き残ることができるのか?2017

    • Author(s)
      磯村尚子・岩尾研二・守田昌哉・深見裕伸
    • Organizer
      日本サンゴ礁学会第20回大会
    • Related Report
      2017 Research-status Report
  • [Book] Monitoring Artificial Materials and Microbes in Marine Ecosystems: Interactions and Assessment Methods2020

    • Author(s)
      Toshiyuki Takahashi (ed)
    • Total Pages
      89
    • Publisher
      Benthambooks
    • ISBN
      9789811437236
    • Related Report
      2019 Annual Research Report
  • [Book] Coral Reef Studies of Japan2018

    • Author(s)
      Isomura N and Fukami H
    • Total Pages
      179
    • Publisher
      Springer
    • Related Report
      2018 Research-status Report
  • [Book] Coral Reef Studies of Japan2018

    • Author(s)
      Naoko Isomura and Hironobu Fukami
    • Total Pages
      179
    • Publisher
      Springer
    • Related Report
      2017 Research-status Report
  • [Remarks] 沖縄工業高等専門学校生物資源工学科 磯村研究室の紹介

    • URL

      https://sites.google.com/site/onctenvbiores/home/isomuralab

    • Related Report
      2019 Annual Research Report
  • [Remarks] 沖縄工業高等専門学校・生物資源工学科・環境生物資源研究の紹介

    • URL

      https://sites.google.com/site/onctenvbiores/home/isomuralab/naokoisomura

    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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