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Ecology and mechanism for memory in animal contests

Research Project

Project/Area Number 21870025
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Ecology/Environment
Research InstitutionOkayama University

Principal Investigator

OKADA Kensuke  Okayama University, 大学院・環境学研究科, 助教 (40550299)

Project Period (FY) 2009 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥2,756,000 (Direct Cost: ¥2,120,000、Indirect Cost: ¥636,000)
Fiscal Year 2010: ¥1,313,000 (Direct Cost: ¥1,010,000、Indirect Cost: ¥303,000)
Fiscal Year 2009: ¥1,443,000 (Direct Cost: ¥1,110,000、Indirect Cost: ¥333,000)
Keywords個体群 / 進化生態 / 行動生態 / 生態学 / 昆虫 / 進化
Research Abstract

This study focused on memory in animal contests. We conducted on the following investigations with the male beetle that can memorize losing for 4 days. We first examined why the memory time is maintained for 4 days using the simulation analysis and revealed change in the memory time. In addition, the males never fight their opponents during which they remember the losing. Instead, they increased investments in ejaculatory volumes, and thus adjust their behavior based on the learning. Using a part of these results, we published several peer reviewed papers with scientific journals.

Report

(3 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • Research Products

    (24 results)

All 2011 2010 2009

All Journal Article (18 results) (of which Peer Reviewed: 8 results) Presentation (6 results)

  • [Journal Article] Male aggressive behavior and exaggerated hindlegs of the bean bug Riptortus pedestris2011

    • Author(s)
      Kensuke Okada、Yu Suzak、Yasukazu Okada Y、Takahisa Miyatake
    • Journal Title

      Zoological Science in press

    • NAID

      40018988019

    • Related Report
      2010 Final Research Report
  • [Journal Article] Male attractiveness, fertility and susceptibility to oxidative stress are influenced by inbreeding in Drosophila simulans2011

    • Author(s)
      Kensuke Okada、John Blount、Maham D Sharma、Ronda R Snook、David J Hosken
    • Journal Title

      Journal of Evolutionary Biology

      Pages: 363-371

    • Related Report
      2010 Final Research Report
  • [Journal Article] Plasticity of size and allometry in multiple sexually selected traits in an armed beetle Gnatocerus cornutus2010

    • Author(s)
      Kensuke Okada 、Takahisa Miyatake
    • Journal Title

      Evolutionary Ecology

      Pages: 1339-1351

    • Related Report
      2010 Final Research Report
  • [Journal Article] Intralocus sexual conflict unresolved by sex-limited trait expression2010

    • Author(s)
      Tomohiro Harano、Kensuke Okada、Satoshi Nakayama、Takahisa Miyatake、David J.Hosken
    • Journal Title

      Current Biology

      Pages: 2036-2039

    • Related Report
      2010 Final Research Report
  • [Journal Article] SpermCompetition : Discrimination isn't always bad2010

    • Author(s)
      Kensuke Okada、David J.Hosken
    • Journal Title

      Current Biology

    • Related Report
      2010 Final Research Report
  • [Journal Article] Ejaculatory strategies associated with experience of losing2010

    • Author(s)
      Kensuke Okada、Takashi Yamane、Takahisa Miyatake
    • Journal Title

      Biology Letters

      Pages: 593-596

    • Related Report
      2010 Final Research Report
  • [Journal Article] Dispersal and ejaculatory strategies associated with exaggeration of weapon in an armed beetle2010

    • Author(s)
      Takashi Yamane、Kensuke Okada、Satoshi Nakayama、Takahisa Miyatake
    • Journal Title

      Proceedings of the Royal Society B

      Pages: 1705-1710

    • Related Report
      2010 Final Research Report
  • [Journal Article] On the optimal duration of memory of losing a conflict-a mathematical model approach2010

    • Author(s)
      Toru Sasaki、Kensuke Okada、Tsuyoshi Kajiwara、Takahisa Miyatake
    • Journal Title

      Journal of Biological Dynamics

      Pages: 270-281

    • Related Report
      2010 Final Research Report
  • [Journal Article] Effect of losing on male fights of broad horned flour beetle, Gnatocerus cornutus2010

    • Author(s)
      Kensuke Okada、Takahisa Miyatake
    • Journal Title

      Behavioral Ecology and Sociobiology

      Pages: 361-369

    • Related Report
      2010 Final Research Report
  • [Journal Article] Ejaculatory strategies associated with experience of losing.2010

    • Author(s)
      Okada K, Yamane T, Miyatake T
    • Journal Title

      Biology Letters

      Volume: 6 Pages: 593-596

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the optimal duration of memory of losing a conflict---a mathematical model approach.2010

    • Author(s)
      Sasaki T, Okada K, Kajiwara T, Miyatake T
    • Journal Title

      Journal of Biological Dynamics

      Volume: 4 Pages: 270-281

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intralocus sexual conflict unresolved by sex-limited trait expression.2010

    • Author(s)
      Harano T, Okada K, Nakayama S, Miyatake T, Hosken DJ
    • Journal Title

      Current biology

      Volume: 20 Pages: 2036-2039

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Sperm competition : discrimination isn't always bad.2010

    • Author(s)
      Okada K, Hosken DJ
    • Journal Title

      Current biology

      Volume: 20

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] On the optimal duration of memory of losing a conflict---a mathematical model approach.2010

    • Author(s)
      Sasaki T, Okada K, Kajiwara T, Miyatake T
    • Journal Title

      Journal of Biological Dynamics (印刷中)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Dispersal and ejaculatory strategies associated with exaggeration of weapon in an armed beetle.2010

    • Author(s)
      Yamane T, Okada K, Nakayama S, Miyatake T
    • Journal Title

      Proceedings of the Royal Society B (印刷中)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Plasticity of size and allometry in multiple sexually selected traits in an armed beetle Gnatocerus cornutus.2010

    • Author(s)
      Okada K, Kiyatake
    • Journal Title

      Evolutionary Ecology (印刷中)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ejaculatory strategies associated with experience of losing.2010

    • Author(s)
      Okada K, Yamane T, Miyatake T
    • Journal Title

      Biology Letters (印刷中)

    • Related Report
      2009 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Genetic correlations between weapons, body shape and fighting behaviour in the horned beetle Gnatocerus cornutus.2009

    • Author(s)
      Kensuke Okada、Takahisa Miyatake.
    • Journal Title

      Animal Behaviour

      Pages: 1057-1065

    • Related Report
      2010 Final Research Report
  • [Presentation] 武器形質の進化におけるオス形質への影響~オオツノコクヌストモドキを例に2011

    • Author(s)
      岡田賢祐
    • Organizer
      第55回日本応用動物昆虫学会大会
    • Place of Presentation
      九州大学箱崎キャンパス
    • Year and Date
      2011-03-28
    • Related Report
      2010 Final Research Report
  • [Presentation] 武器形質の進化におけるオス形質への影響~オオツノコクヌストモドキを例に~2011

    • Author(s)
      岡田賢祐
    • Organizer
      第55回 日本応用動物昆虫学会大会
    • Place of Presentation
      九州大学
    • Year and Date
      2011-03-28
    • Related Report
      2010 Annual Research Report
  • [Presentation] 敗北経験と意思決定2011

    • Author(s)
      岡田賢祐
    • Organizer
      第58回日本生態学会大会
    • Place of Presentation
      札幌コンベンションセンター
    • Year and Date
      2011-03-09
    • Related Report
      2010 Final Research Report
  • [Presentation] 敗北経験と意思決定2011

    • Author(s)
      岡田賢祐
    • Organizer
      第58回 日本生態学会大会
    • Place of Presentation
      札幌コンベンションセンター
    • Year and Date
      2011-03-09
    • Related Report
      2010 Annual Research Report
  • [Presentation] オオツノコクヌストモドキにおける複数の誇張形質の可塑性2010

    • Author(s)
      岡田賢祐, 宮竹貴久
    • Organizer
      第54回 日本応用動物昆虫学会千葉大会
    • Place of Presentation
      千葉大学
    • Year and Date
      2010-03-26
    • Related Report
      2009 Annual Research Report
  • [Presentation] 遺伝子座内性的対立は誇張形質の性的二型だけでは解消しない2010

    • Author(s)
      原野智広, 岡田賢祐, 中山慧, 宮竹貴久
    • Organizer
      第57回 日本生態学会東京大会
    • Place of Presentation
      東京大学
    • Year and Date
      2010-03-17
    • Related Report
      2009 Annual Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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