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Research Project

Project/Area Number 21K19291
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 45:Biology at organismal to population levels and anthropology, and related fields
Research InstitutionUniversity of Tsukuba

Principal Investigator

Koyabu Daisuke  筑波大学, プレシジョン・メディスン開発研究センター, 准教授 (60712510)

Co-Investigator(Kenkyū-buntansha) 武智 正樹  順天堂大学, 医学部, 准教授 (10455355)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2023: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2022: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords進化 / 出産 / 骨盤
Outline of Research at the Start

応募者はコウモリ類をモデルとして哺乳類における安産を可能にする形態学的基盤を明らかにし,本課題を端緒として「出産の進化形態学」を起創したい.これまでコウモリ類は翼やエコーロケーションの進化ばかりが注目され,コウモリ類の骨盤に関する研究は皆無に近い.四足動物の骨盤形態の規定因子は主に歩行様式と出産様式だが,体重支持機能を失ったコウモリ類のメスの骨盤はほぼ出産機能に特化していると想定でき,コウモリ類から安産を可能にする形態学的基盤(安産形質)を限りなく純粋な形で抽出できると期待される.

Outline of Final Research Achievements

We have created a CT image database of bat specimens from around the world, encompassing 29 species across 8 families, covering nearly all extant families. From these CT images, we generated three-dimensional visualizations of pelvic morphology, including the pelvis, pelvic muscles, ligaments, and reproductive organs. Using these images, we reconstructed the pelvic structures on a computer and conducted interspecies comparisons through geometric morphometrics based on coordinate data, evaluating the impact of reproductive ecology and phylogeny. Additionally, using the lesser short-tailed bat as a model, we performed transcriptome analysis to investigate the changes in gene expression occurring in the ligaments near the pelvis during the perinatal period.

Academic Significance and Societal Importance of the Research Achievements

安産は人類永遠の願いであり,難産は人類永遠の悩みである.近代医学が十分に発達する以前の1900年の日本では妊産婦10万人中397人が死亡し,こんにちでも10万人 中4人が子宮内大量出血などで死亡する(2018年度厚生労働省人口統計).難産を原因とする胎児の分娩中死亡も0.5%の割合で発生するとされ,ヒトにとって出産は母子ともに命懸けの生活史イベントといえる.本研究課題はコウモリ類をモデルとして哺乳類における安産を可能にする生物学的基盤を明らかにできた.新規の創薬や出産制御,また出産を成功により導くための基礎知見を得ることができた.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (11 results)

All 2024 2023 2022 Other

All Int'l Joint Research (1 results) Journal Article (10 results) (of which Int'l Joint Research: 10 results,  Peer Reviewed: 10 results,  Open Access: 7 results)

  • [Int'l Joint Research] City University of Hong Kong(中国)

    • Related Report
      2021 Research-status Report
  • [Journal Article] Development of the hyolaryngeal architecture in horseshoe bats: insights into the evolution of the pulse generation for laryngeal echolocation2024

    • Author(s)
      Nojiri Taro、Takechi Masaki、Furutera Toshiko、Brualla Nicolas L. M.、Iseki Sachiko、Fukui Dai、Tu Vuong Tan、Meguro Fumiya、Koyabu Daisuke
    • Journal Title

      EvoDevo

      Volume: 15 Issue: 1 Pages: 1-28

    • DOI

      10.1186/s13227-024-00221-7

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Comparative anatomy of the vocal apparatus in bats and implications for the diversity of laryngeal echolocation2024

    • Author(s)
      Brualla Nicolas L M、Wilson Laura A B、Tu Vuong Tan、Nojiri Taro、Carter Richard T、Ngamprasertwong Thongchai、Wannaprasert Thanakul、Doube Michael、Fukui Dai、Koyabu Daisuke
    • Journal Title

      Zoological Journal of the Linnean Society

      Volume: zlad180 Issue: 3 Pages: 1-20

    • DOI

      10.1093/zoolinnean/zlad180

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Anatomy and homology of the caudal auricular muscles in greater short-nosed fruit bat (<i>Cynopterus sphinx</i>)2023

    • Author(s)
      Tzu-Chin Chi, Fumiya Meguro, Masaki Takechi, Toshiko Furutera, Vuong Tan Tu, Hiroki Higashiyama, Joon Hyuk Sohn, Taro Nojri, Junpei Kimura*, Daisuke Koyabu*
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 85 Issue: 5 Pages: 571-577

    • DOI

      10.1292/jvms.23-0088

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Timing of organogenesis underscores the evolution of neonatal life histories and powered flight in bats2023

    • Author(s)
      Nojiri Taro、Werneburg Ingmar、Tu Vuong Tan、Fukui Dai、Takechi Masaki、Iseki Sachiko、Furutera Toshiko、Koyabu Daisuke
    • Journal Title

      Proceedings of the Royal Society B: Biological Sciences

      Volume: 290 Issue: 1990 Pages: 1-12

    • DOI

      10.1098/rspb.2022.1928

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Caudal auricular muscle variations and the evolution of echolocation behavior in pteropodid bats2023

    • Author(s)
      CHI Tzu-Chin、TU Vuong Tan、SOHN JoonHyuk、KIMURA Junpei、KOYABU Daisuke
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 85 Issue: 6 Pages: 625-630

    • DOI

      10.1292/jvms.23-0128

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A taxonomic reassessment of Rhinolophus rex Allen, 1923 and its allies (Chiroptera: Rhinolophidae)2023

    • Author(s)
      Tu Vuong Tan、Furey Neil M.、Gorfol Tamas、Hassanin Alexandre、Arai Satoru、Koyabu Daisuke、Douangboubpha Bounsavane、Csorba Gabor
    • Journal Title

      Vertebrate Zoology

      Volume: 73 Pages: 545-556

    • DOI

      10.3897/vz.73.e101487

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Evolution, conservatism and overlooked homologies of the mammalian skull2023

    • Author(s)
      Koyabu Daisuke
    • Journal Title

      Philosophical Transactions of the Royal Society B: Biological Sciences

      Volume: 378 Issue: 1880 Pages: 20220081-20220081

    • DOI

      10.1098/rstb.2022.0081

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A deep learning approach for morphological feature extraction based on variational auto-encoder: an application to mandible shape2023

    • Author(s)
      Tsutsumi Masato、Saito Nen、Koyabu Daisuke、Furusawa Chikara
    • Journal Title

      npj Systems Biology and Applications

      Volume: 9 Issue: 1 Pages: 30-30

    • DOI

      10.1038/s41540-023-00293-6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The vocal apparatus: An understudied tool to reconstruct the evolutionary history of echolocation in bats?2023

    • Author(s)
      Brualla Nicolas L. M.、Wilson Laura A. B.、Doube Michael、Carter Richard T.、McElligott Alan G.、Koyabu Daisuke
    • Journal Title

      Journal of Mammalian Evolution

      Volume: 30 Issue: 1 Pages: 79-94

    • DOI

      10.1007/s10914-022-09647-z

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A bibliometric analysis of research trends in bat echolocation studies between 1970 and 20212022

    • Author(s)
      Cao Rui、Li Jun、Koyabu Daisuke
    • Journal Title

      Ecological Informatics

      Volume: 69 Pages: 101654-101654

    • DOI

      10.1016/j.ecoinf.2022.101654

    • Related Report
      2022 Research-status Report 2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research

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Published: 2021-07-13   Modified: 2025-01-30  

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