• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Biotic interactions can cause allopatry and subsequent speciation: theoretical and empirical approaches

Research Project

Project/Area Number 18K14793
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 45040:Ecology and environment-related
Research InstitutionHokkaido University (2020)
Tokyo Metropolitan University (2018-2019)

Principal Investigator

Yamaguchi Ryo  北海道大学, 先端生命科学研究院, 助教 (80812982)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2020: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords種分化 / 種間相互作用 / 地理的隔離 / 数理モデル / 生物系統地理 / 生物多様性 / 生殖隔離 / 地理的分断
Outline of Final Research Achievements

We propose that the geographic isolation of populations can occur not due to physical factors such as tectonic or climatic changes but due to biological interactions represented by hybrid zones. We named this novel process of geographic isolation by interacting closely related species "Biotic Population Subdivision (BPS)." We used natural populations of a species complex of a flightless leaf beetle to test our hypothesis. Using this species complex as an example, we analyzed the repetition of the origination of isolated populations and subsequent speciation in the continuous space using molecular phylogenetic analysis, mating experiments, and mathematical modeling. We showed that interactions in the hybrid zone are one of the factors that drive recurrent speciation.

Academic Significance and Societal Importance of the Research Achievements

生物の種間相互作用を考慮した地理的隔離のメカニズムを数理モデリングにより解析し、野外と実験下での実証データを得ることで、BPSの枠組みを提唱した。これは従来の古典的な適応放散モデルでは到達できなかった知見であると同時に、非適応的放散の野外での検証例となる。国内外において本課題で提案する新規仮説の提唱・検証は行われておらず、日本独自の生物を用いて研究を展開した点においても、生物多様性の新たな理解に貢献した意義は大きい。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (12 results)

All 2021 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (6 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 6 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Int'l Joint Research] University of British Columbia(カナダ)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of British Columbia(カナダ)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Recurrent speciation rates on islands decline with species number2021

    • Author(s)
      Yamaguchi Ryo, Iwasa Yoh, Tachiki Yuuya
    • Journal Title

      Proceedings of the Royal Society B

      Volume: 288 Pages: 20210255-20210255

    • NAID

      120007097381

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Insights from Fisher's geometric model on the likelihood of speciation under different histories of environmental change2020

    • Author(s)
      Yamaguchi Ryo, Otto Sarah P.
    • Journal Title

      Evolution

      Volume: 74 Issue: 8 Pages: 1603-1619

    • DOI

      10.1111/evo.14032

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Extra molting, cannibalism and pupal diapause under unfavorable growth conditions in Atrophaneura alcinous (Lepidoptera: Papilionidae)2020

    • Author(s)
      Nakahara, T., Horita, J., Booton, R. D., & Yamaguchi, R.
    • Journal Title

      Entomological Science

      Volume: 23 Issue: 1 Pages: 57-65

    • DOI

      10.1111/ens.12399

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Preservation of the value of rice paddy fields: investigating how to prevent farmers from abandoning the fields by means of evolutionary game theory2020

    • Author(s)
      Lee, J. H., Yamaguchi, R., Yokomizo, H., & Nakamaru, M
    • Journal Title

      ournal of Theoretical Biology

      Volume: 495 Pages: 110247-110247

    • DOI

      10.1016/j.jtbi.2020.110247

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Speciation dynamics and mathematical models - Investigating promoting factors of evolution of reproductive isolation -2019

    • Author(s)
      山口諒
    • Journal Title

      JAPANESE JOURNAL OF ECOLOGY

      Volume: 69 Issue: 3 Pages: 151-169

    • DOI

      10.18960/seitai.69.3_151

    • NAID

      130007771844

    • ISSN
      0021-5007, 2424-127X
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Quantification of species boundary2019

    • Author(s)
      山口諒, 松林圭
    • Journal Title

      JAPANESE JOURNAL OF ECOLOGY

      Volume: 69 Issue: 3 Pages: 145-149

    • DOI

      10.18960/seitai.69.3_145

    • NAID

      130007771842

    • ISSN
      0021-5007, 2424-127X
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 近縁種間の相互作用による地理的分断と種分化2020

    • Author(s)
      山口諒
    • Organizer
      第68回日本生態学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 種間相互作用による地理的分断プロセスの理論と実証2020

    • Author(s)
      山口諒
    • Organizer
      第67回日本生態学会大会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Biotic interactions can cause allopatry and subsequent speciation: theoretical and empirical approaches2019

    • Author(s)
      山口諒
    • Organizer
      2019年度首都大学東京バイオコンファレンス
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Fisher’s geometric model on the likelihood of speciation under different adaptation scenarios2019

    • Author(s)
      Yamaguchi, R. and Otto, P. Sarah
    • Organizer
      Gordon Research Seminar & Gordon Research Conference
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

URL: 

Published: 2018-04-23   Modified: 2022-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi