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Approach for mechanism of eclosion timing determination and its genetic basis: to reveal parallel seasonal divergence in Japanese winter moth

Research Project

Project/Area Number 18K06415
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 45040:Ecology and environment-related
Research InstitutionKyoto University

Principal Investigator

Yamamoto Satoshi  京都大学, 理学研究科, 助教 (10643257)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords季節適応 / 休眠 / ゲノム / 種分化 / 適応進化 / 冬尺蛾
Outline of Final Research Achievements

Understanding the process of speciation is one of the most important issues in evolutionary biology. In this study, we revealed the mechanism of eclosion timing determination in early- and late-winter of Inurois punctigera by rearing experiments. We also constructed a genome assembly with high contiguity and gene coverage. We found that the genes responsible for the difference in eclosion timing between early- and late-winter Inurois punctigera were concentrated on the possible Z chromosome. Our results suggest that not only natural selection but also physical conditions, such as the location of genes in the genome, are important for parallel divergence of escape time in Inurois punctigera.

Academic Significance and Societal Importance of the Research Achievements

Inurois属蛾類には初冬型と晩冬型が存在し、これらは繰り返し進化してきた。また初冬型と晩冬型は繁殖季節が異なるために互いに交尾できない。クロテンフユシャクは種内に初冬型と晩冬型が存在し種が分化する過程にあると考えられる。本種のゲノムを研究し、種分化に関わる遺伝子およびそれらのゲノム上の位置を明らかにした。生物進化では自然選択が重要な役割を果たすが、ゲノム上の遺伝子の位置によって進化可能性が変化するものと考えられる。本研究では、種分化に関連する遺伝子が同一染色体上で物理的に連鎖していることを明らかにするなど、属内で両型が繰り返し進化した背景にゲノム構造が関与している可能性を示した。

Report

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

    (5 results)

All 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results)

  • [Journal Article] Population abundance gradient of Inurois punctigera along altitude.2020

    • Author(s)
      Yamamoto S, Matsuhisa S
    • Journal Title

      Entomological Science

      Volume: 23 Issue: 1 Pages: 23-27

    • DOI

      10.1111/ens.12392

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 初冬型および晩冬型フユシャク類の生活史比較:平行種分化の謎に迫る2020

    • Author(s)
      山本哲史、工藤誠也、佐藤臨、池田紘士、藤澤知親、野村翔太、曽田貞滋
    • Organizer
      日本進化学会
    • Related Report
      2020 Annual Research Report
  • [Presentation] クロテンフユシャクの季節性関連遺伝子:ゲノムワイド関連解析によるアプローチ2020

    • Author(s)
      山本哲史、工藤誠也、佐藤臨、池田紘士、藤澤知親、野村翔太、曽田貞滋
    • Organizer
      環境DNA学会個体群生態学会合同大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 異時的種分化に関わる遺伝領域へのアプローチ2020

    • Author(s)
      山本哲史、工藤誠也、佐藤臨、池田紘士、藤澤知親、曽田貞滋
    • Organizer
      日本生態学会
    • Related Report
      2019 Research-status Report
  • [Presentation] フユシャク類の初冬繁殖型と晩冬繁殖型の原因となる生活史形質とその遺伝基盤の探索2019

    • Author(s)
      山本哲史、工藤誠也、佐藤臨、池田紘士、藤澤知親、曽田貞滋
    • Organizer
      日本進化学会
    • Related Report
      2019 Research-status Report

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

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