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Origin of human terrestrial life influenced by climate change in the late Miocene

Research Project

Project/Area Number 17K07586
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Physical anthropology
Research InstitutionKyoto University

Principal Investigator

TAKEMOTO Hiroyuki  京都大学, 霊長類研究所, 特定助教 (80379015)

Co-Investigator(Kenkyū-buntansha) 橋本 千絵  京都大学, 霊長類研究所, 助教 (40379011)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2018: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsボノボ / チンパンジー / 森林気象 / 地上性 / 樹上性 / 熱帯季節林 / 体温調節 / 後期中新世 / 捕食リスク / ウガンダ,カリンズ森林 / 森林内微気象 / コンゴ,ワンバ森林 / 林内利用高度 / 地上利用 / 季節変化 / 進化 / 古環境 / 霊長類 / 人類進化 / 温度環境
Outline of Final Research Achievements

I conducted a survey for chimpanzees in the Kalinzu Forest, Uganda, for three months in the dry season from December to February 2017, and a survey for bonobos in the Wamba, Democratic Republic of the Congo, for four months in the dry season from December to March 2018. At both sites, I tracked focal animal by nest to nest and recorded the behavior of the target species. Also, the fruit availability was measured twice a month. The temperature in the forest was measured at heights of 1.5 m to a maximum of 26 m every 10 minutes.
Although data analysis is currently in progress, party size analysis was performed using the previously collected data from Wamba and Bossou in West Africa. The party size was larger for terrestrial parties than that in trees. the predation risk might affected their party size. In the future, I plan to make a new analysis using the data of Kalinzu, collected this time.

Academic Significance and Societal Importance of the Research Achievements

1980年代以降、イーストサイドストーリーの内容が広く理解され、森林面積の減少とヒトの誕生の関係が議論されるようになってきた。環境変化が生物の進化を促すという進化生物学のごく一般的な知識が、ヒトの進化にも適用されたことには大きな意義があった。しかし、初期人類は森林環境ですでに半地上性を獲得しており、その生態学的な理由が不明なままだった。本研究は森林内で地上利用が増える要因を森林内微気象と特定しており、かつての熱帯季節林の周辺部で初期人類の化石が発見されていることの理由を与えている。本研究はイーストサイドストーリーに変わる新たな人類誕生の仮説を提唱している。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2020 2019 2018 2017

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (6 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Comparisons of between-group differentiation in male kinship between bonobos and chimpanzees2020

    • Author(s)
      Shintaro Ishizuka, Hiroyuki Takemoto, Tetsuya Sakamaki, Nahoko Tokuyama, Kazuya Toda, Chie Hashimoto, Takeshi Furuichi
    • Journal Title

      Scientific reports

      Volume: 10 Issue: 1 Pages: 251-251

    • DOI

      10.1038/s41598-019-57133-z

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The History of Bonobos: Investigation from Movements of the Earth and the Perspective of Biogeography2018

    • Author(s)
      TAKEMOTO Hiroyuki
    • Journal Title

      Primate Research

      Volume: 34 Issue: 1 Pages: 87-102

    • DOI

      10.2354/psj.34.016

    • NAID

      130007437738

    • ISSN
      0912-4047, 1880-2117
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 大地の変動と生物地理から探るボノボの歴史2018

    • Author(s)
      竹元博幸
    • Journal Title

      霊長類研究

      Volume: 未定

    • NAID

      130007437738

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ボノボとチンパンジーの地上パーティーサイズと捕食リスク2019

    • Author(s)
      竹元博幸
    • Organizer
      日本哺乳類学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Terrestrial behavior increases party size in chimpanzees and bonobos2018

    • Author(s)
      Takemoto H.
    • Organizer
      27th International Primatological Society Congress
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Male-female interaction during intergroup encounter in chimpanzees in kalinzu forest reserve, Uganda.2018

    • Author(s)
      Hasimoto C, Isaji M, Mouri K, Takemoto H, Furuichi T.
    • Organizer
      27th International Primatological Society Congress
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Overview: bonobo (pan paniscus) variation among population level and TL2 landscape in D.R. Congo.2018

    • Author(s)
      Thompson J, Hart J, Hart T, Hahn B, Takemoto H.
    • Organizer
      27th International Primatological Society Congress
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Terrestrial behavior increases party size in chimpanzees and bonobos.2018

    • Author(s)
      Hiroyuki Takemoto
    • Organizer
      27th Congress of the International Primatological Society
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 地上にいるときは一緒にいる個体数が増える2017

    • Author(s)
      竹元博幸
    • Organizer
      第33回本霊長類学会大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2021-02-19  

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