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

Neuromolecular mechanisms underlying variations in insect photoperiodism

Research Project

Project/Area Number 19H02971
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 39050:Insect science-related
Research InstitutionOsaka City University

Principal Investigator

Goto Shinsuke  大阪市立大学, 大学院理学研究科, 教授 (70347483)

Co-Investigator(Kenkyū-buntansha) 渕側 太郎  大阪市立大学, 大学院理学研究科, 准教授 (90802934)
志賀 向子  大阪大学, 理学研究科, 教授 (90254383)
長谷部 政治  大阪大学, 理学研究科, 助教 (40802822)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2020: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2019: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Keywords昆虫 / 光周性 / 休眠 / 変異 / 内分泌 / 概日時計 / 内分泌系
Outline of Research at the Start

多くの昆虫は厳しい冬をやり過ごすため,秋の短い日長に反応して「休眠」と呼ばれる生理状態に入り,積極的に成長や繁殖を停止させる.このように生物が日の長さ(光周期)に反応する性質を「光周性」という.この光周性には種内でも違いがある.低緯度地域に生息する個体群は高緯度個体群に比べ,同一光周期条件下でも休眠に入る個体の割合が低い.また,メスはオスに比べて,同一光周期条件下でも休眠に入る個体の割合が低い.この地理系統差,性差の重要性は生態学的にも認められているが,どのような生理機構でこれらの違いが生み出されているのかは不明である.本研究は,この光周性の変異を生み出す分子生理機構を明らかにするものである.

Outline of Final Research Achievements

In order to clarify "what physiological mechanisms produce geographic and sexual differences in photoperiodism in insects", we used a common flesh fly (Sarcophaga similis) to (i) elucidate the physiological mechanisms underlying insect photoperiodism and (ii) elucidate the physiological mechanisms that produce geographic and sexual differences. The results suggested that circadian clock, neuropeptides, neurotransmitters, prothoracicotropic hormone, prothoracic gland, ecdysteroid synthetic enzymes expressed in the prothoracic gland and ecdysteroids are involved in induction of pupal diapause. Geographical variation in photoperiodism was attributed to differences in the photoinducible phase defined by the circadian clock, which may regulate neuropeptides and the endocrine system. On the other hand, the mechanisms that generate sexual differences are still a big mystery.

Academic Significance and Societal Importance of the Research Achievements

昆虫は越冬のために休眠に入る(共通性).一方,休眠を制御する光周性には種内でも違いがある(多様性).この共通性と多様性はどのようなしくみで生み出されているのだろうか.本研究は,光周性の分子生理機構を解明するとともに,その機構のうちの何が変化することで種内変異が生み出されているかを検討したものである.光周性の違いを分子神経レベルで明らかにしようとする研究は非常に少なく,本申請課題は高い先駆性を有する.また,本研究は「光周性」をテーマとして生理学と生態学を結びつける新しい時代の「エコフィジオロジー(生態生理学)」の礎となるものである.

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (11 results)

All 2022 2021 2020 2019 Other

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

  • [Int'l Joint Research] Agriculture and Agri-Food Canada(カナダ)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Juvenile hormone as a causal factor for maternal regulation of diapause in a wasp2022

    • Author(s)
      Mukai Ayumu、Mano Genyu、Des Marteaux Lauren、Shinada Tetsuro、Goto Shin G.
    • Journal Title

      Insect Biochemistry and Molecular Biology

      Volume: 144 Pages: 103758

    • DOI

      10.1016/j.ibmb.2022.103758

    • URL

      https://ocu-omu.repo.nii.ac.jp/records/2019898

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Urban warming and artificial light alter dormancy in the flesh fly2021

    • Author(s)
      Mukai Ayumu、Yamaguchi Koki、Goto Shin G.
    • Journal Title

      Royal Society Open Science

      Volume: 8 Issue: 7 Pages: 210866

    • DOI

      10.1098/rsos.210866

    • NAID

      120007124374

    • URL

      https://ocu-omu.repo.nii.ac.jp/records/2020463

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cold storage of diapausing larvae and post-storage performance of adults in the blowfly Lucilia sericata (Diptera: Calliphoridae)2020

    • Author(s)
      Ichikawa Aoi、Ikeda Motohiro、Goto Shin G.
    • Journal Title

      Applied Entomology and Zoology

      Volume: 55 Issue: 3 Pages: 321-327

    • DOI

      10.1007/s13355-020-00685-8

    • NAID

      120007036311

    • URL

      https://ocu-omu.repo.nii.ac.jp/records/2019621

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Structure Determination of Juvenile Hormone from Chagas Disease Vectors, Rhodnius prolixus and Triatoma infestans2020

    • Author(s)
      Matsumoto Keiji、Yasuno Yoko、Yasuda Kohei、Hayashi Tsuyoshi、Goto Shin G.、Shinada Tetsuro
    • Journal Title

      Chemistry Letters

      Volume: 49 Issue: 5 Pages: 538-541

    • DOI

      10.1246/cl.200126

    • NAID

      130007840179

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 昆虫の季節適応機構に関する分子生理学的研究2022

    • Author(s)
      後藤慎介
    • Organizer
      第66回日本応用動物昆虫学会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 都市温暖化と人工照明がナミニクバエの休眠誘導に及ぼす影響2021

    • Author(s)
      向井歩,山口幸紀,後藤慎介
    • Organizer
      第81回日本昆虫学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] ナミニクバエ終齢幼虫の脳における神経ペプチドPDFおよびsNPFの分布2021

    • Author(s)
      渕側太郎・後藤慎介
    • Organizer
      第65回日本応用動物昆虫学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ナミニクバエ光周性の臨界日長の緯度クラインを生み出す生理機構:概日時計の違いに注目して2021

    • Author(s)
      吉永奈央・後藤慎介
    • Organizer
      第65回日本応用動物昆虫学会大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Study of circadian clock and prothoracicotropic hormone neurons in the photoperiodic response of Sarcophaga silmilis larvae2021

    • Author(s)
      Oh-e, Yutaro
    • Organizer
      NTHU-OU Virtual Symposium on Biological and Medical Sciences
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 昆虫の環境適応と時間設定機構2019

    • Author(s)
      後藤慎介
    • Organizer
      生物リズム2019若手研究者の集い
    • Related Report
      2019 Annual Research Report
    • Invited

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi