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Asymmetric male genitalia in calopterygid damselflies : their function and evolutionary patterns

Research Project

Project/Area Number 21570099
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Biodiversity/Systematics
Research InstitutionTokyo Metropolitan University

Principal Investigator

HAYASHI Fumio  首都大学東京, 理工学研究科, 准教授 (40212154)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords進化 / 精子競争 / 配偶行動
Research Abstract

Males of some calopterygid damselfly species(Odonata) have asymmetric genitalia in which the left lateral-process is protruded more than the right process, but those of other species have symmetric genitalia. The function of the lateral-processes is removal of rival sperm from the female spermathecal ducts, which are Y-shaped and placed at the deep part of the female sperm storage organ. On the molecular phylogeny of the family Calopterygidae based on 16S rRNA, asymmetric male genitalia appeared once(all left-handed) and after that the degree of asymmetry changed depending on the female sperm storage tactics.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (9 results)

All 2012 2011 2010 2009

All Journal Article (1 results) Presentation (8 results)

  • [Journal Article] Factors affecting sperm quality before and after mating of calopterygid damselflies2010

    • Author(s)
      Tsuchiya, K. and Hayashi, F.
    • Journal Title

      PLoS ONE

      Volume: 5 Pages: 9904-9904

    • Related Report
      2011 Final Research Report
  • [Presentation] Structure and function of the asymmetric male genitalia of the damselfly Neurobasis chinensis2012

    • Author(s)
      Hayashi, F.
    • Organizer
      59^<th> Annual Meeting of Ecological Society of Japan/5^<th> East Asian Federation of Ecological Societies International Congress
    • Place of Presentation
      Otsu
    • Year and Date
      2012-03-19
    • Related Report
      2011 Annual Research Report
  • [Presentation] Structure and function of the asymmetric male genitalia of the damselfly Neurobasis chinensis2012

    • Author(s)
      Hayashi, F.
    • Organizer
      59th Annual Meeting of Ecological Society of Japan/5th East Asian Federation of Ecological Societies International Congress
    • Place of Presentation
      Otsu
    • Related Report
      2011 Final Research Report
  • [Presentation] 雌雄の拮抗的共進化:カワトンボ類の精子の掻き出しは左利き?2011

    • Author(s)
      林文男
    • Organizer
      第17回つくば進化生態学セミナー
    • Place of Presentation
      筑波大学
    • Year and Date
      2011-01-22
    • Related Report
      2010 Annual Research Report
  • [Presentation] 雌雄の拮抗的共進化:カワトンボ類の精子の掻き出しは左利き?2011

    • Author(s)
      林文男
    • Organizer
      第17回つくば進化生態学セミナー
    • Place of Presentation
      筑波
    • Related Report
      2011 Final Research Report
  • [Presentation] Left-handed sperm removal by male calopterygid damselflies (Odonata).2009

    • Author(s)
      Tsuchiya, K., Hayashi, F.
    • Organizer
      10th International Congress of Ecology
    • Place of Presentation
      Brisbane, Australia
    • Year and Date
      2009-08-20
    • Related Report
      2009 Annual Research Report
  • [Presentation] カワトンホ類における左右非対称な精子掻き出し器官の進化2009

    • Author(s)
      林文男
    • Organizer
      日本生態学会第56回大会
    • Place of Presentation
      盛岡
    • Related Report
      2011 Final Research Report
  • [Presentation] ミヤマカワトンホのオスによる左利きの精子掻き出し行動2009

    • Author(s)
      土屋香織・林文男
    • Organizer
      日本生態学会第56回大会
    • Place of Presentation
      盛岡
    • Related Report
      2011 Final Research Report
  • [Presentation] Left-handed sperm removal by male calopterygid damselflies(Odonata)2009

    • Author(s)
      Tsuchiya, K. and Hayashi, F.
    • Organizer
      The 10th International Congress of Ecology
    • Place of Presentation
      Brisbane, Australia
    • Related Report
      2011 Final Research Report

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

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