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YAMAGUCHI Sachi  山口 幸

ORCIDConnect your ORCID iD *help
Researcher Number 20709191
Other IDs
Affiliation (Current) 2025: 奈良女子大学, 大和・紀伊半島学研究所, 協力研究員
Affiliation (based on the past Project Information) *help 2025: 奈良女子大学, 大和・紀伊半島学研究所, 協力研究員
2020 – 2024: 東京女子大学, 現代教養学部, 講師
2018 – 2019: 奈良女子大学, 大和・紀伊半島学研究所, 協力研究員
2016 – 2017: 神奈川大学, 工学部, 助教
2015: 神奈川大学, 工学部, 助手
Review Section/Research Field
Principal Investigator
Basic Section 45040:Ecology and environment-related / Ecology/Environment
Except Principal Investigator
Basic Section 40030:Aquatic bioproduction science-related / Basic Section 45040:Ecology and environment-related / Basic Section 45030:Biodiversity and systematics-related / Biodiversity/Systematics
Keywords
Principal Investigator
共生 / 環境適応 / 塩類細胞 / 浸透圧調節 / 環境応答 / 内分泌調節 / 雄化誘導遺伝子 / 温度センサータンパク質 / 遺伝性決定 / 温度依存性決定 … More / アロマターゼ遺伝子 / 性ホルモン / 季節性 / 適応進化 / 性表現 / 性決定 / 婚姻贈呈 / 生理的機構 / 発生多型 / 無性生殖 / 有性生殖 / bet hedging / 性決定様式 / 至近要因 / 性表現多様性 / 数理モデル / 進化生態 / 分業 / 性転換 / 性システム / 自家受精 / 雌雄同体 / 温度性決定 / 遺伝子発現 / 社会的地位 / 双方向性転換 / アロマターゼ / ホルモンダイナミックス … More
Except Principal Investigator
フジツボ / 性配分 / 雌雄同体 / 性表現 / 精子貯蔵 / 遺伝的多様性 / 配偶システム / 外洋性イカ / 多様性 / ジェンダー / 繁殖生態 / フクロムシ / 性システム / モデル / 適応度 / 遺伝 / 精子間競争 / 矮雄 / 進化 Less
  • Research Projects

    (7 results)
  • Research Products

    (51 results)
  • Co-Researchers

    (7 People)
  •  The relationship between resources and genetic variation in oceanic squid

    • Principal Investigator
      佐藤 成祥
    • Project Period (FY)
      2025 – 2027
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 40030:Aquatic bioproduction science-related
    • Research Institution
      Tokai University
  •  性配分のwhyとhow: フジツボ類における究極要因と至近要因の解明

    • Principal Investigator
      遊佐 陽一
    • Project Period (FY)
      2024 – 2027
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 45040:Ecology and environment-related
    • Research Institution
      Nara Women's University
  •  分子的・生理的機構と形質適応進化をつなぐ数理的研究Principal Investigator

    • Principal Investigator
      山口 幸
    • Project Period (FY)
      2022 – 2024
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 45040:Ecology and environment-related
    • Research Institution
      Tokyo Woman's Christian University
  •  Theoretical modeling integrating physiological mechanism and adaptive evolution of sexualityPrincipal Investigator

    • Principal Investigator
      YAMAGUCHI Sachi
    • Project Period (FY)
      2019 – 2023
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 45040:Ecology and environment-related
    • Research Institution
      Tokyo Woman's Christian University
      Nara Women's University
  •  Exploring the diversity of sexual systems in barnacles

    • Principal Investigator
      Yusa Yoichi
    • Project Period (FY)
      2019 – 2022
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Review Section
      Basic Section 45030:Biodiversity and systematics-related
    • Research Institution
      Nara Women's University
  •  Mathematical modeling of sex change in coral fishes: integration of the sex controlling gene expression and the evolutionary responses to social statusPrincipal Investigator

    • Principal Investigator
      YAMAGUCHI Sachi
    • Project Period (FY)
      2016 – 2019
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Ecology/Environment
    • Research Institution
      Nara Women's University
      Kanagawa University
  •  Evolution of sexual systems: their adaptive significance and mechanism of maintenance in barnacles

    • Principal Investigator
      Yusa Yoichi
    • Project Period (FY)
      2015 – 2018
    • Research Category
      Grant-in-Aid for Scientific Research (B)
    • Research Field
      Biodiversity/Systematics
    • Research Institution
      Nara Women's University

All 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015

All Journal Article Presentation Book

  • [Book] An evolutionary ecological approach to sex allocation and sex determination in crustaceans. In Cothran R, Thiel M (eds) "The Natural History of the Crustacea: Reproductive Biology: Volume VI." pp. 177-196.2020

    • Author(s)
      Kota Sawada, Sachi Yamaguchi
    • Total Pages
      568
    • Publisher
      Oxford University Press
    • ISBN
      9780190688554
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Book] Life history constraints facilitate the evolution of androdioecy and male dwarfing. In Leonard JL (ed) "Transitions between sexual systems: understanding the mechanisms of, and pathways between, dioecy, hermaphroditism and other sexual systems." pp. 247-267.2019

    • Author(s)
      Sachi Yamaguchi
    • Total Pages
      363
    • Publisher
      Springer
    • ISBN
      9783319941394
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Book] 海の生き物はなぜ多様な性を示すのか2015

    • Author(s)
      山口幸
    • Total Pages
      163
    • Publisher
      共立出版
    • Data Source
      KAKENHI-PROJECT-15H04416
  • [Journal Article] Theoretical studies of diverse sexual patterns in marine animals2023

    • Author(s)
      Y. Iwasa, S. Yamaguchi
    • Journal Title

      Proceedings of the Royal Society B

      Volume: 290:20222229 Issue: 1990

    • DOI

      10.1098/rspb.2022.2229

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Journal Article] Evolution of male nuptial gift and female remating: a quantitative genetic model2022

    • Author(s)
      Y. Iwasa, S. Yamaguchi
    • Journal Title

      Journal of Theoretical Biology

      Volume: 533:110939 Pages: 110939-110939

    • DOI

      10.1016/j.jtbi.2021.110939

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Journal Article] Evolutionary game of life-cycle types in marine benthic invertebrates: feeding larvae versus nonfeeding larvae versus direct development2022

    • Author(s)
      Iwasa, Y., Y. Yusa & S. Yamaguchi
    • Journal Title

      Journal of Theoretical Biology

      Volume: 537 Pages: 111019-111019

    • DOI

      10.1016/j.jtbi.2022.111019

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18H02494, KAKENHI-PROJECT-19K06838, KAKENHI-PROJECT-19H03284
  • [Journal Article] Optimal composition of chloride cells for osmoregulation in a randomly fluctuating environment2022

    • Author(s)
      Y. Uchiyama, Y. Iwasa, S. Yamaguchi
    • Journal Title

      Journal of Theoretical Biology

      Volume: 537:111016 Pages: 111016-111016

    • DOI

      10.1016/j.jtbi.2022.111016

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Journal Article] On the role of eviction in group living sex changers2022

    • Author(s)
      Y. Iwasa, S. Yamaguchi
    • Journal Title

      Behavioral Ecology and Sociobiology

      Volume: 73:38 Issue: 4

    • DOI

      10.1007/s00265-022-03159-9

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Journal Article] Evolutionary game in an androdioecious population: coupling of outcrossing and male production2021

    • Author(s)
      S. Yamaguchi, Y. Iwasa
    • Journal Title

      Journal of Theoretical Biology

      Volume: 513:110594 Pages: 110594-110594

    • DOI

      10.1016/j.jtbi.2021.110594

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Journal Article] Evolution of life cycle dimorphism: an example of sacoglossan sea slugs2021

    • Author(s)
      S. Yamaguchi, Y. Yusa, Y. Iwasa
    • Journal Title

      Journal of Theoretical Biology

      Volume: 525:110760 Pages: 110760-110760

    • DOI

      10.1016/j.jtbi.2021.110760

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K06838, KAKENHI-PROJECT-19H03284
  • [Journal Article] Optimal control of root nodulation -- prediction of life history theory of a mutualistic system2021

    • Author(s)
      R. Kobayashi, S. Yamaguchi, Y. Iwasa
    • Journal Title

      Journal of Theoretical Biology

      Volume: 510:110544 Pages: 110544-110544

    • DOI

      10.1016/j.jtbi.2020.110544

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Journal Article] Task allocation in a cooperative society: specialized castes or age-dependent switching among ant workers2020

    • Author(s)
      Yoh Iwasa, Sachi Yamaguchi
    • Journal Title

      Scientific Reports

      Volume: 10 Issue: 1

    • DOI

      10.1038/s41598-020-59920-5

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-16K18624, KAKENHI-PROJECT-19K06838
  • [Journal Article] Bovine mastitis and optimal disease management: dynamic programming analysis2020

    • Author(s)
      T. Sekiya, S. Yamaguchi, Y. Iwasa
    • Journal Title

      Journal of Theoretical Biology

      Volume: 498:110292 Pages: 110292-110292

    • DOI

      10.1016/j.jtbi.2020.110292

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Journal Article] Enhanced risk of cancer in companion animals as a response to the longevity2020

    • Author(s)
      M. Tanaka, S.Yamaguchi, Y. Iwasa
    • Journal Title

      Scientific Reports

      Volume: 10:19508 Issue: 1

    • DOI

      10.1038/s41598-020-75684-4

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Journal Article] Seasonality in the production of male larvae: a game model for parasitic barnacles (Cirripedia: Rhizocephala)2020

    • Author(s)
      S. Yamaguchi, Y. Iwasa
    • Journal Title

      Journal of Crustacean Biology

      Volume: 40 Issue: 6 Pages: 833-838

    • DOI

      10.1093/jcbiol/ruaa021

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-19K06838, KAKENHI-PROJECT-19H03284
  • [Journal Article] Temperature-dependent sex determination, realized by hormonal dynamics with enzymatic reactions sensitive to ambient temperature2018

    • Author(s)
      Sachi Yamaguchi, Yoh Iwasa
    • Journal Title

      Journal of Theoretical Biology

      Volume: 453 Pages: 146-155

    • DOI

      10.1016/j.jtbi.2018.05.023

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Journal Article] Why is bidirectional sex change rare?2018

    • Author(s)
      Sachi Yamaguchi, Yoh Iwasa
    • Journal Title

      Journal of Theoretical Biology

      Volume: 453 Pages: 136-145

    • DOI

      10.1016/j.jtbi.2018.05.024

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Journal Article] Advantage for the sex changer who retains the gonad of the nonfunctional sex2017

    • Author(s)
      Sachi Yamaguchi, Yoh Iwasa
    • Journal Title

      Behavioral Ecology and Sociobiology

      Volume: 71 Issue: 2 Pages: 39-39

    • DOI

      10.1007/s00265-017-2269-5

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-16K18624, KAKENHI-PROJECT-15H04423
  • [Journal Article] Be a good loser: a theoretical model for subordinate decision-making on bi-directional sex change in haremic fishes2017

    • Author(s)
      Kota Sawada, Sachi Yamaguchi, Yoh Iwasa
    • Journal Title

      Journal of Theoretical Biology

      Volume: 421 Pages: 127-135

    • DOI

      10.1016/j.jtbi.2017.03.029

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Journal Article] サテライトシンポジウム報告「フジツボ類(蔓脚亜綱)の生物学」2016

    • Author(s)
      山口幸・吉田隆太・遊佐陽一
    • Journal Title

      Cancer

      Volume: 25 Pages: 1-6

    • NAID

      130005431606

    • Data Source
      KAKENHI-PROJECT-15H04416
  • [Journal Article] Time required for sex change in teleost fishes: hormonal dynamics shaped by selection2016

    • Author(s)
      Sachi Yamaguchi
    • Journal Title

      Journal of Theoretical Biology

      Volume: 407 Pages: 339-348

    • DOI

      10.1016/j.jtbi.2016.07.012

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Journal Article] Dwarf males in the epizoic barnacle Octolasmis unguisiformis and their implication for sexual system evolution2015

    • Author(s)
      Sawada, K., Yoshida, R., Yasuda, K., Yamaguchi, S., Yusa, Y.
    • Journal Title

      Invertebrate Biology

      Volume: 134 Issue: 2 Pages: 162-167

    • DOI

      10.1111/ivb.12083

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-15H04416
  • [Presentation] 淡水と海水を行き来する魚の浸透圧調節を司る塩類細胞3タイプの最適組成2024

    • Author(s)
      山口幸、内山優香、巌佐庸
    • Organizer
      第22回東日本魚類生態研究会
    • Data Source
      KAKENHI-PROJECT-22K06409
  • [Presentation] 性と生の数理モデル:海洋生物と過ごした20年(第27回生態学会宮地賞 受賞記念講演)2023

    • Author(s)
      山口幸
    • Organizer
      第70回(2023年)日本生態学会
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Presentation] 淡水と海水を行き来する魚の浸透圧調節を司る塩類細胞3タイプの最適組成2023

    • Author(s)
      山口幸、内山優香、巌佐庸
    • Organizer
      第70回(2023年)日本生態学会
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Presentation] 淡水と海水を行き来する魚の浸透圧調節を司る塩類細胞3タイプの最適組成2022

    • Author(s)
      山口幸、内山優香、巌佐庸
    • Organizer
      2022年度日本数理生物学会
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Presentation] 生物の性の不思議を数理モデルで解き明かす:生命現象と理論の結びつけ方のこれまでとこれから2022

    • Author(s)
      山口幸
    • Organizer
      生物リズム若手研究者の集い2022
    • Invited
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Presentation] 昆虫の雄が相手に渡す婚姻ギフトと雌による再交尾--配偶者選択進化の例として2022

    • Author(s)
      巌佐 庸、山口幸
    • Organizer
      ゲーム理論ワークショップ2022
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Presentation] 海洋生物の多様な生活史の進化2021

    • Author(s)
      巌佐 庸、山口 幸、遊佐陽一
    • Organizer
      日本数理生物学会
    • Data Source
      KAKENHI-PROJECT-19H03284
  • [Presentation] 海洋生物の多様な生活史の進化2021

    • Author(s)
      巌佐庸、山口幸、遊佐陽一
    • Organizer
      2021年度日本数理生物学会
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Presentation] 寿命の長い動物はがんになりにくいのに、どうしてペットはがんになる率が高いのか?2020

    • Author(s)
      巌佐 庸、田中萌子、山口幸
    • Organizer
      2020年度日本数理生物学会
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Presentation] 性比と他殖/自殖性の共進化:マングローブ・キリフィッシュを例に2020

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      第67回日本生態学会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] 性比と他殖/自殖性の共進化:マングローブ・キリフィッシュを例に2020

    • Author(s)
      山口幸,巌佐庸
    • Organizer
      2020年度日本数理生物学会
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Presentation] 性比と他殖/自殖性の共進化:マングローブ・キリフィッシュを例に2020

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      ゲーム理論ワークショップ2020
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] 温度性決定をもたらす生理機構の数理的研究:アレニウス則が語ること2019

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      日本生態学会第66回大会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] なぜ双方向性転換は稀なのかーアロマターゼ遺伝子発現ダイナミックスによる説明2019

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      第42回日本分子生物学会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] Evolution of diverse sexual systems in Thoracican barnacles: a theoretical approach2019

    • Author(s)
      Sachi Yamaguchi, Yoh Iwasa
    • Organizer
      The Crustacean Society of Japan 57th Annual Meeting
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19K06838
  • [Presentation] 性比と他殖/自殖性の共進化:マングローブ・キリフィッシュを例に2019

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      第38回動物行動学会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] 来るべき性転換のチャンスに備える魚2019

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      2019年度(第29回)日本数理生物学会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] Evolution of diverse sexual systems in thoracican barnacles: a theoretical approach.2019

    • Author(s)
      Sachi Yamaguchi & Yoh Iwasa
    • Organizer
      Open International Symposium: Reproductive Biology of Barnac
    • Invited / Int'l Joint Research
    • Data Source
      KAKENHI-PROJECT-19H03284
  • [Presentation] 爬虫類は卵の孵化温度で性が決まる:適応性と分子機構2019

    • Author(s)
      山口幸
    • Organizer
      ゲーム理論ワークショップ2019
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] 生物の性の多様性を数理モデルで理解する2018

    • Author(s)
      山口幸
    • Organizer
      数理工学ワークショップ マルチエージェントシステムの数理とシミュレーション
    • Invited
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] なぜ双方向性転換は稀なのかーホルモンのダイナミックスによる説明2018

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      第34回 個体群生態学会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] 温度性決定をもたらす生理機構について2018

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      日本動物行動学会 第37回大会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] 性転換するサンゴ礁の魚は、両性の生殖巣を持つべきか?2017

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      ゲーム理論ワークショップ2017
    • Place of Presentation
      電気通信大学
    • Year and Date
      2017-03-05
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] なぜ双方向性転換は稀なのかーホルモンダイナミックスによる説明2017

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      日本数理生物学会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] 性転換するサンゴ礁の魚は、両性の生殖巣を持つべきか?2017

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      日本生態学会
    • Place of Presentation
      早稲田大学
    • Year and Date
      2017-03-16
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] Advantage for the sex changer who retains the gonad of the nonfunctional sex2017

    • Author(s)
      Sachi Yamaguchi, Yoh Iwasa
    • Organizer
      個体群生態学会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] 性転換するサンゴ礁の魚は、両性の生殖腺を持つべきか?2017

    • Author(s)
      山口幸、巌佐庸
    • Organizer
      日本動物行動学会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] 温度性決定をもたらす生理機構について2017

    • Author(s)
      巌佐庸、山口幸
    • Organizer
      日本数理生物学会
    • Data Source
      KAKENHI-PROJECT-16K18624
  • [Presentation] Time required for sex change in teleost fishes: hormonal dynamics shaped by selection2016

    • Author(s)
      Sachi Yamaguchi
    • Organizer
      日本数理生物学会
    • Place of Presentation
      九州大学
    • Year and Date
      2016-09-09
    • Data Source
      KAKENHI-PROJECT-16K18624
  • 1.  Yusa Yoichi (60355641)
    # of Collaborated Projects: 3 results
    # of Collaborated Products: 4 results
  • 2.  關野 正志 (90371799)
    # of Collaborated Projects: 3 results
    # of Collaborated Products: 0 results
  • 3.  和田 哲 (40325402)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 4.  豊田 賢治 (00757370)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 5.  佐藤 成祥 (40723854)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 6.  小野 廣記 (40867602)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results
  • 7.  広橋 教貴 (90376997)
    # of Collaborated Projects: 1 results
    # of Collaborated Products: 0 results

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