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evolution and learning

Research Project

Project/Area Number 18K06417
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 InstitutionOkayama University

Principal Investigator

Okada Kensuke  岡山大学, 環境生命科学学域, 准教授 (40550299)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords生態学 / 生態 / 行動学
Outline of Final Research Achievements

We identified that changes in behavior are influenced by neurotransmitters (biogenic amines). We also found that the changes in the behavior of this species are also significantly affected by the changes in the neurotransmitters. Specifically, these behaviors include fighting, dispersal, reproduction, and walking. These behavioral traits contribute significantly to the adaptability of the species. Neurotransmitters are also closely related to memory and may influence learning in this species. Quantitative genetic analyses indicate that there is a genetic basis for the learning behavior of this species, and these results have been published in specialized international journals. Currently, we are discovering candidate genes for memory regulation in the bighorn. In other words, we are clarifying the differences in the sequences of the genes we have searched for by sequencing analysis.

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Academic Significance and Societal Importance of the Research Achievements

本研究の特色・独創性の1つは、汎用性の高さにある。学習という現象は昆虫から人間まで様々な生き物で見られる。記憶を司るメカニズムは幾分解明されており、脊椎動物と無脊椎動物の間で相同性が高く、オオツノを使った実験結果を、様々な生物に置き換えることができる。これまでに、生態学的背景が明らかな種において、記憶・学習の至近的メカニズムの検証を目的とした研究は少なく、その反対もまた同様である。従って、生物一般に見られる学習の進化を考える上で、究極・至近的要因を突き止めることが不可欠にも関わらず、これを検証した研究はない包括的に研究を進めることで、これを可能とする優れたモデルであることを証明できた。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (9 results)

All 2022 2021 2020 2019

All Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 9 results,  Open Access: 3 results)

  • [Journal Article] Female remating decisions and mate choice benefits in the beetle Gnatocerus cornutus2022

    • Author(s)
      Kiyose Katsuya、Katsuki Masako、Suzaki Y?、Okada Kensuke
    • Journal Title

      Behavioral Ecology and Sociobiology

      Volume: 76 Issue: 4 Pages: 55-55

    • DOI

      10.1007/s00265-022-03161-1

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Natural selection increases female fitness by reversing the exaggeration of a male sexually selected trait2021

    • Author(s)
      Okada Kensuke、Katsuki Masako、Sharma Manmohan D.、Kiyose Katsuya、Seko Tomokazu、Okada Yasukazu、Wilson Alastair J.、Hosken David J.
    • Journal Title

      Nature Communications

      Volume: 12 Issue: 1 Pages: 3420-3420

    • DOI

      10.1038/s41467-021-23804-7

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Octopaminergic system orchestrates combat and mating behaviors: A potential regulator of alternative male mating tactics in an armed beetle2021

    • Author(s)
      Kiyose Katsuya、Katsuki Masako、Suzaki Yu、Okada Kensuke、Okada Yasukazu
    • Journal Title

      Journal of Insect Physiology

      Volume: 131 Pages: 104211-104211

    • DOI

      10.1016/j.jinsphys.2021.104211

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sexually selected traits and life history traits of larger and smaller males of the horned flour beetle Gnatocerus cornutus2021

    • Author(s)
      Kiyose Katsuya、Okada Yasukazu、Katsuki Masako、Suzaki Yu、Okada Kensuke
    • Journal Title

      Ecological Entomology

      Volume: 1 Issue: 4 Pages: 1-1

    • DOI

      10.1111/een.13016

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Older males are more competitive in male fights and more aggressive toward females in the broad-horned flour beetle Gnatocerus cornutus2020

    • Author(s)
      Okada Kensuke、Katsuki Masako、Kiyose Katsuya、Okada Yasukazu
    • Journal Title

      Behavioral Ecology and Sociobiology

      Volume: 74 Issue: 3 Pages: 36-36

    • DOI

      10.1007/s00265-020-2815-4

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mating experience induces females to avoid harmful males in the beetle Lasioderma serricorne2019

    • Author(s)
      Kensuke Okada, Yu; Suzaki, Rikiya Sasaki, Masako Katsuki
    • Journal Title

      Animal Behaviour

      Volume: 154 Pages: 39-46

    • DOI

      10.1016/j.anbehav.2019.06.005

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Loser-effect duration evolves independently of fighting ability2019

    • Author(s)
      Kensuke Okada, Yasukazu Okada, Sasha R. X. Dall, David J. Hosken
    • Journal Title

      Proc. R. Soc. B

      Volume: 286 Issue: 1903 Pages: 20190582-20190582

    • DOI

      10.1098/rspb.2019.0582

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A specific type of insulin-like peptide regulates the conditional growth of a beetle weapon2019

    • Author(s)
      Yasukazu Okada, Masako Katsuki, Naoki Okamoto, Haruna Fujioka, Kensuke Okada
    • Journal Title

      PLOS Biology

      Volume: 17 Issue: 11 Pages: 541-541

    • DOI

      10.1371/journal.pbio.3000541

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mating experience induces females to avoid harmful males in beetle Lasioderma serricorne2019

    • Author(s)
      Kensuke Okada・Yu Suzaki・Rikiya Sasaki・Masako Katsuki
    • Journal Title

      Animal Behaviour

      Volume: 印刷中

    • Related Report
      2018 Research-status Report
    • Peer Reviewed

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

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