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Evolutionary dynamics of sexual and asexual lineages of pea aphid in coexistence regions

Research Project

Project/Area Number 19K06848
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 InstitutionHokkaido University

Principal Investigator

AKIMOTO SHINICHI  北海道大学, 農学研究院, 農学研究院研究員 (30175161)

Co-Investigator(Kenkyū-buntansha) 神戸 崇  北海道大学, 農学研究院, 農学研究院研究員 (40648739)
Project Period (FY) 2019-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords有性生殖 / 無性生殖 / アブラムシ / 遺伝的多様性 / クローン / 競争 / 性比 / 他者認識 / ゴール / ミトコンドリアCOI / 交雑 / 1次寄主 / 2次寄主 / エンドウヒゲナガアブラムシ / 飼育法 / 自己・非自己認識 / マイクロサテライト / 系統樹 / 混生 / 遺伝子頻度 / クローン間競争
Outline of Research at the Start

同種内に有性生殖と無性生殖の系統が存在し、両者がしのぎを削るアブラムシは、有性生殖と無性生殖の適応的意義を評価するのに適した材料である。本研究では、なぜ無性生殖系統が暖温帯地域で卓越し、有性生殖系統がその地域に侵入できないのかを、遺伝的多様性の比較、系統関係、室内実験を通じて解明する。本研究では、有性生殖系統は春期のクローン間競争に弱く、このため無性生殖系統と共存する地域では、数を減らすとする仮説を検討する。

Outline of Final Research Achievements

Aphids belong to Aphididae (Hemiptera, Insecta) and include several pest species. Most aphid species are composed of sexual lineages, which reproduce sexually once in a year, and asexual lineages, which reproduce asexually all year round. The two lineages sometimes coexist in the same locality. Using the sexual and asexual lineages of the pea aphid, the present study elucidated how the two lineages can coexist on the same region through analyzing the population dynamics of the two lineages over a two-year period. In addition, our laboratory experiments explored the mechanism of interaction between two different clones when they coexist on plants by using the agar-cut leaf method.

Academic Significance and Societal Importance of the Research Achievements

本州北部では,有性生殖系統と無性生殖系統の共存が10年以上継続したことが確認された.本地域ではアカツメクサ上で越冬可能な無性生殖クローンが確認されており,越冬可能性こそが高頻度で無性生殖クローンが維持される要因であると推定できた.クローン間の競争現象を実験室内で客観的に再現したところ,2クローンの共存は繁殖活動を促進し,単一クローンの場合よりもより繁殖率が高まることが明らかとなった.各クローンは他クローンの存在を認識でき,自己クローンと他クローンの個体比率に応じて繁殖率をコントロールできることも明らかとなった.これらの成果は,アブラムシ個体数制御のための技術開発の第一歩となりうる.

Report

(6 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (17 results)

All 2024 2023 2022 2021 2019 Other

All Int'l Joint Research (4 results) Journal Article (8 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 8 results,  Open Access: 3 results) Presentation (5 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Int'l Joint Research] Zunyi Normal University(中国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] College of Biology and Agriculture/Zunyi Normal University/Zunyi(中国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Department of Plant Medicine/Gyeongsang National University/Jinju(韓国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Zunyi Normal University(中国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Interspecific recognition based on cuticular hydrocarbons mediates reproduction control in aphids2024

    • Author(s)
      Yang Li, Nousheen Parven, Shin‐ichi Akimoto
    • Journal Title

      Scientific Reports

      Volume: 14 Issue: 1

    • DOI

      10.1038/s41598-024-54019-7

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Self-Recognition and Allorecognition Mechanisms Exert a Significant Influence on the Sex Allocation Patterns of the Pea Aphid2024

    • Author(s)
      Yang Li, Shin-Ichi Akimoto, Shi-Yi Jing
    • Journal Title

      Insects

      Volume: 15 Issue: 3 Pages: 158-158

    • DOI

      10.3390/insects15030158

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Taxonomic revision of the Tetraneura akinire species group (Insecta, Aphididae, Eriosomatinae), with description of a new species and a correction of a nomenclatural confusion2022

    • Author(s)
      WATANABE TOMOKO、LEE WONHOON、SANO MASAKAZU、MURAKAMI KEISUKE、AKIMOTO SHIN-ICHI
    • Journal Title

      Zootaxa

      Volume: 5183 Issue: 1 Pages: 162-186

    • DOI

      10.11646/zootaxa.5183.1.14

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Yellow-green color polymorphism in males of a pea aphid clone and its genetic pattern2022

    • Author(s)
      Li Yang、Akimoto Shin‐ichi
    • Journal Title

      Entomological Science

      Volume: 25 Issue: 1

    • DOI

      10.1111/ens.12503

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Self and non-self recognition affects clonal reproduction and competition in the pea aphid2021

    • Author(s)
      Li Yang and Akimoto Shinichi
    • Journal Title

      Proceedings of the Royal Society B

      Volume: 288 Issue: 1953 Pages: 20210787-20210787

    • DOI

      10.1098/rspb.2021.0787

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Seasonal changes in cuticular hydrocarbons in response to polyphenism in the host-alternating aphid Prociphilus oriens2021

    • Author(s)
      Xin TONG , Yusuke TAKATA and Shin-ichi AKIMOTO
    • Journal Title

      Entomological Science

      Volume: 24 Issue: 1 Pages: 18-26

    • DOI

      10.1111/ens.12443

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Heat shock alters pea aphid-Buchnera interactions: negative allometry of gene densities2021

    • Author(s)
      Nousheen Parven, Izumi Yao, Takashi Kanbe & Shin-ichi Akimoto
    • Journal Title

      Entomologia Experimentalis et Applicata

      Volume: 169 Issue: 5 Pages: 462-471

    • DOI

      10.1111/eea.13039

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Female-female competition leads to female‐biased sex allocation and dimorphism in brood sex composition in a gall‐forming aphid.2019

    • Author(s)
      Tong X and Akimoto S
    • Journal Title

      Functional Ecology

      Volume: 33 Issue: 3 Pages: 457-466

    • DOI

      10.1111/1365-2435.13248

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] トドノネオオワタムシ(雪虫)の性比,交尾行動およ 交尾器形質2023

    • Author(s)
      秋元信一
    • Organizer
      北海道応用動物・昆虫研究発表会
    • Related Report
      2022 Research-status Report
  • [Presentation] Self and nonself recognition in aphids2022

    • Author(s)
      Shinichi Akimoto
    • Organizer
      XI International Anniversary Symposium on Aphids
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ゴール形成アブラムシ, ニレヨスジワタムシ(オカボノク ロアブラムシ)の混乱した学名の整理とさらなる分類上の問題2022

    • Author(s)
      秋元信一
    • Organizer
      一般社団法人 日本昆虫学会
    • Related Report
      2022 Research-status Report
  • [Presentation] 同じ植物に共存する2種のアブラムシ間の増殖競争と競争からの撤退2021

    • Author(s)
      秋元信一
    • Organizer
      第65回 日本応用動物昆虫学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] アブラムシ2種間の増殖競争と競争からの撤退2019

    • Author(s)
      李楊,秋元信一
    • Organizer
      日本昆虫学会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2025-01-30  

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