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Genetic bet-hedging as a mechanism for the evolution of polyandry, reexamined

Research Project

Project/Area Number 26440241
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Ecology/Environment
Research InstitutionKagawa University

Principal Investigator

YASUI Yukio  香川大学, 農学部, 准教授 (30325328)

Project Period (FY) 2014-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords雌の多回交尾の進化 / bet-hedging / 両賭け / 危険分散 / 性選択 / polyandry / evolution
Outline of Final Research Achievements

The origin and maintenance of polyandry is one of the key unresolved questions in evolutionary biology. Many case-by-case hypotheses have been presented to explain this phenomenon but a ubiquitous explanation is still lacking. One possible general explanation is bet-hedging, which is a strategy to avoid the risk associated to mating with a single unsuitable male and thus to minimize the chances of complete reproductive failure by the female. Using computer simulations and an analytical model, I demonstrate that bet-hedging polyandry becomes highly effective if the risk of extinction of a female lineage attributable to male deficiencies is high in small subpopulation or under limited mate availability. Therefore, cuckoldry or polyandry may be a female strategy to spread the risk of extinction of her genotype over multiple males.

Academic Significance and Societal Importance of the Research Achievements

本研究により雌の多回交尾は雄原因による繁殖失敗やそれによる家系の絶滅を回避するための危険分散であることが示された。雌の多回交尾は動物の適応戦略にとどまらない。「雄は無差別に交尾したがり雌は控えめで子育てに励む、しかし子供が増えるわけでないのに浮気もする」というのは人間にもみられる傾向である。したがってこの性質は文化や宗教などによって後天的に植え付けられたものではなく、ヒトの生物学的背景human natureを暗示している。ただし人間の行動は遺伝子の指令によって突き動かされるよりも個人的な感情に裏打ちされた意識的なものであり、本研究は人間の浮気や不倫を正当化する科学的根拠を与えるものではない。

Report

(6 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (25 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (4 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 1 results,  Acknowledgement Compliant: 3 results) Presentation (9 results) (of which Invited: 4 results) Book (1 results) Remarks (7 results)

  • [Int'l Joint Research] Spanish Research Council(スペイン)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Donana Biological Station/Spanish Research Council CSIC(スペイン)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] Donana Biological Station,/Spanish Research Council CSIC(スペイン)

    • Related Report
      2015 Research-status Report
  • [Int'l Joint Research] Centre for Evolutionary Biology,/School of Animal Biology,/The University of Western Australia(オーストラリア)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Bet-hedging against male-caused reproductive failures may explain ubiquitous cuckoldry in female birds2018

    • Author(s)
      Yasui Yukio、Yoshimura Jin
    • Journal Title

      Journal of Theoretical Biology

      Volume: 437 Pages: 214-221

    • DOI

      10.1016/j.jtbi.2017.10.029

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bet-hedging as a mechanism for the evolution of polyandry, revisited2016

    • Author(s)
      Yasui, Y. and Garcia-Gonzalez, F.
    • Journal Title

      Evolution

      Volume: 70 Issue: 2 Pages: 385-397

    • DOI

      10.1111/evo.12847

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Risk-spreading by mating multiply is plausible and requires empirical attention2015

    • Author(s)
      Garcia-Gonzalez, F., Yasui, Y. and Evans, J. P.
    • Journal Title

      Proceedings of the Royal Society of London Series B. Biological Sciences

      Volume: 282 Issue: 1809 Pages: 20150866-20150866

    • DOI

      10.1098/rspb.2015.0866

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Mating portfolios: bet-hedging, sexual selection and female multiple mating2015

    • Author(s)
      Francisco Garcia-Gonzalez, Yukio Yasui, Jonathan P. Evans
    • Journal Title

      Proceedings of the Royal Society B Biological Sciences

      Volume: 282 Issue: 1798 Pages: 20141525-20141525

    • DOI

      10.1098/rspb.2014.1525

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 永続性パラダイムに関するコメント2018

    • Author(s)
      安井 行雄
    • Organizer
      日本生態学会第65回大会シンポジウム「適応進化の永続性パラダイム -ダーウィニズム・ビヨンド-」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 増殖と存続から捉え直す「適応度」概念2018

    • Author(s)
      安井 行雄
    • Organizer
      日本進化学会第20回大会シンポジウム「適応進化の永続性パラダイム -ダーウィニズム ビヨンド リミックス-」
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 雌の多回交尾の進化に関するbet-hedging 理論の死と復活(第9回日本動物行動学会賞受賞講演)2018

    • Author(s)
      安井 行雄
    • Organizer
      日本動物行動学会第37回大会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 雌の多雄交尾の進化メカニズムとしての両賭け(bet-hedging):理論と検証2018

    • Author(s)
      安井 行雄
    • Organizer
      京都大学生態学研究センター研究集会「異なるマクロ生物学分野のインタープレイ」
    • Related Report
      2018 Annual Research Report
  • [Presentation] 永続性パラダイムに関するコメント2018

    • Author(s)
      安井行雄
    • Organizer
      日本生態学会第65回大会
    • Related Report
      2017 Research-status Report
    • Invited
  • [Presentation] 雌の多雄交尾の進化メカニズムとしての両賭け(bet-hedging):理論と検証2017

    • Author(s)
      安井行雄
    • Organizer
      日本応用動物昆虫学会
    • Place of Presentation
      東京農工大学
    • Year and Date
      2017-03-29
    • Related Report
      2016 Research-status Report
  • [Presentation] 雌の多雄交尾の進化メカニズムとしての両賭け(bet-hedging):理論と検証2017

    • Author(s)
      安井行雄
    • Organizer
      日本応用動物昆虫学会第61回大会
    • Related Report
      2017 Research-status Report
  • [Presentation] イチゴ圃場における天敵アカメガシワクダアザミウマの分布と広がり2015

    • Author(s)
      藤田一平, 安井行雄, 渡邊丈夫, 森光太郎, 伊藤勇弥
    • Organizer
      日本応用動物昆虫学会第59回大会
    • Place of Presentation
      山形大学
    • Year and Date
      2015-03-28
    • Related Report
      2014 Research-status Report
  • [Presentation] イチゴ施設栽培でのアカメガシワクダアザミウマと乱反射資材併用衝立式ネットを利用した春のアザミウマ類侵入急増時の防除対策(香川県)2015

    • Author(s)
      藤田一平, 安井行雄, 渡邊丈夫
    • Organizer
      日本応用動物昆虫学会第59回大会
    • Place of Presentation
      山形大学
    • Year and Date
      2015-03-27
    • Related Report
      2014 Research-status Report
  • [Book] 動物学の百科事典 (多回交尾 - 雌はなぜ浮気するのか?の項目)2018

    • Author(s)
      公益社団法人日本動物学会 安井行雄(分担執筆)
    • Total Pages
      800
    • Publisher
      丸善出版
    • ISBN
      9784621303092
    • Related Report
      2018 Annual Research Report
  • [Remarks] カダイラボ 香川大学農学部 安井行雄

    • URL

      https://www.kagawa-u.ac.jp/kadailab/22540/

    • Related Report
      2018 Annual Research Report
  • [Remarks] The evolution of polyandry

    • URL

      http://www.pacospace.com/research/evolution-of-polyandry

    • Related Report
      2017 Research-status Report
  • [Remarks] Yukio Yasui Research Gate

    • URL

      https://www.researchgate.net/profile/Yukio_Yasui

    • Related Report
      2016 Research-status Report
  • [Remarks] Paco Garcia-Gonzalez's Research Group Space

    • URL

      http://www.pacospace.com/

    • Related Report
      2016 Research-status Report 2015 Research-status Report
  • [Remarks] 研究紹介:安井行雄

    • URL

      http://www.ag.kagawa-u.ac.jp/?research=%e5%ae%89%e4%ba%95%e8%a1%8c%e9%9b%84%e3%80%80%e9%80%b2%e5%8c%96%e7%94%9f%e7%89%a9%e5%ad%a6

    • Related Report
      2016 Research-status Report
  • [Remarks] Dr Paco Garcia-Gonzalez

    • URL

      http://www.web.uwa.edu.au/people/paco.garcia

    • Related Report
      2015 Research-status Report
  • [Remarks] Jonathan Evans

    • URL

      https://scholar.google.com.au/citations?user=if2zNyEAAAAJ&hl=en

    • Related Report
      2015 Research-status Report

URL: 

Published: 2014-04-04   Modified: 2022-02-22  

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