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Experimental reproduction of ecological speciation caused by inter-specific hybridization and elucidation of its genetic mechanism

Research Project

Project/Area Number 16H06178
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Biodiversity/Systematics
Research InstitutionKyushu University

Principal Investigator

Matsubayashi Kei  九州大学, 基幹教育院, 助教 (60528256)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥23,920,000 (Direct Cost: ¥18,400,000、Indirect Cost: ¥5,520,000)
Fiscal Year 2018: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Fiscal Year 2017: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2016: ¥9,490,000 (Direct Cost: ¥7,300,000、Indirect Cost: ¥2,190,000)
Keywords雑種種分化 / 生態的種分化 / 寄主特異性 / エコゲノミクス / 種分化 / 同倍数性雑種種分化 / 植食性テントウムシ
Outline of Final Research Achievements

In Japanese phytophagous ladybird beetles, we certified that a population of the blue cohosh specialist species in Southern Hokkaido is formed as homoploid hybrid speciation caused by hybridization between closely related thistle specialist species and generalist of blue cohosh and thistle in Hokkaido. The blue cohosh specialist species, which has been thought to be a single species has evolved independently multiple times throughout Japan archipelago. Artificial F1 hybrid offspring of the two parental species in Hokkaido could accept both parental host plants, while they demonstrated significantly reduced larval survivorships on thistle. These results indicate that the blue cohosh specialist species in Southern Hokkaido evolves avoidance against unfit thistle plant after hybridization.

Academic Significance and Societal Importance of the Research Achievements

今回、種間交雑が(1) F1以降の食性幅を変え、その後 (2)特定の食草への特殊化が進む、という2段階の過程を経て種分化が起きることが示唆された。これまで雑種種分化はF1あるいはF2における超越分離で生殖隔離が生じるとされてきたが、交雑の時点(1)では大きな生殖隔離の成立には至らず、その後の選択によって生殖隔離ができていることになる。
北海道南部のルイヨウマダラテントウが本州の同種とは独立起源のものであることが示されたことで、分類学的な同一種の中に異なる遺伝的・進化的背景を持った個体群が存在することが明らかになった。これによって保全の単位の見直しを提言することが可能になる。

Report

(4 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (11 results)

All 2020 2019 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Acknowledgement Compliant: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results) Book (1 results)

  • [Int'l Joint Research] The University of Sheffield(United Kingdom)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Extremely divergent host plant acceptance with gene flow between sympatric host races of the phytophagous ladybird beetle Henosepilachna diekei2019

    • Author(s)
      Matsubayashi Kei W.、Kahono Sih、Hartini Sri、Katakura Haruo
    • Journal Title

      Entomological Science

      Volume: 22 Issue: 4 Pages: 404-412

    • DOI

      10.1111/ens.12382

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 種のちがいを量る2019

    • Author(s)
      松林 圭
    • Journal Title

      日本生態学会

      Volume: 69 Pages: 171-182

    • NAID

      130007771843

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 種の境界:進化学と生態学、分子遺伝学から種分化に迫る -序論と趣旨説明-2019

    • Author(s)
      山口 諒、松林 圭
    • Journal Title

      日本生態学会

      Volume: 69 Pages: 145-149

    • NAID

      130007771842

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Genetic divergence with ongoing gene flow is maintained by the use of different hosts in phytophagous ladybird beetles genus Henosepilachna2017

    • Author(s)
      Matsubayashi K. W.、Kohyama T. I.、Kobayashi N.、Yamasaki S.、Kuwajima M.、Katakura H.
    • Journal Title

      Journal of Evolutionary Biology

      Volume: 30 Issue: 6 Pages: 1110-1123

    • DOI

      10.1111/jeb.13071

    • Related Report
      2017 Annual Research Report 2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ecological speciation2016

    • Author(s)
      松林 圭、藤山 直之
    • Journal Title

      JAPANESE JOURNAL OF ECOLOGY

      Volume: 66 Issue: 3 Pages: 561-580

    • DOI

      10.18960/seitai.66.3_561

    • NAID

      130006778154

    • ISSN
      0021-5007, 2424-127X
    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] やっかいなお隣さんが多様性を生み出す?2020

    • Author(s)
      松林 圭
    • Organizer
      日本生態学会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 異なる寄主植物への適応で生じる雑種の適応度低下2018

    • Author(s)
      松林 圭、Sih Kahono、片倉 晴雄
    • Organizer
      第65回日本生態学会大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 寄主変更が生み出す多次元的ニッチ分化と生殖隔離2017

    • Author(s)
      松林 圭
    • Organizer
      日本生態学会
    • Place of Presentation
      早稲田大学、東京、日本
    • Year and Date
      2017-03-16
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] Adaptive radiation and evolution of isolation barriers caused by specialization to different host plants in a phytophagous ladybird beetle2017

    • Author(s)
      Kei Matsubayashi
    • Organizer
      The 33rd Annual Meeting of the Society of Population Ecology
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Book] 動物学の百科事典2018

    • Author(s)
      公益社団法人日本動物学会
    • Total Pages
      800
    • Publisher
      丸善出版
    • ISBN
      4621303090
    • Related Report
      2017 Annual Research Report

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Published: 2016-04-21   Modified: 2021-02-19  

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