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Reconstruction of life history of Desmostylus based on stable isotope analyses along enamel growth lines of molars

Research Project

Project/Area Number 24540502
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Stratigraphy/Paleontology
Research InstitutionNational Museum of Nature and Science, Tokyo

Principal Investigator

KOHNO Naoki  独立行政法人国立科学博物館, 地学研究部, 研究主幹 (20250136)

Research Collaborator UNO Hikaru  農業環境技術研究所, 物質循環研究領域, 契約研究員
TARU Hajime  神奈川県立生命の星地球博物館, 学芸部, 主任学芸員
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords古生態学 / 生活史 / 安定同位体 / 微量元素 / 束柱類 / デスモスチルス / 北西太平洋 / 北東太平洋 / 歯学
Outline of Final Research Achievements

We analyzed stable isotope ratios of carbon, oxygen and the trace element (e.g., strontium) from the continuous samplings along the enamel growth lines of molar teeth in Desmostylus hesperus that is an extinct marine mammal known only from the Middle Miocene of the North Pacific. Based on our analyses, we confirmed that some individuals had isotope ratios of carbon and oxygen that fluctuated periodically. However, some others did not show the same result. These results suggest that some individuals of Desmostylus might have changed a place of absorbing water periodically. In contrast, the fluctuation of the trace element was not remarkable in all the individuals we analysed. It suggests that the periodic movements of individuals remained in small range. It indicates that Desmostylus had different life cycle in between, for instance, males and females.

Report

(4 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (8 results)

All 2015 2014 2013 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (5 results)

  • [Journal Article] A new desmostylian mammal from Unalaska (USA), the robust Sanjussen jaw from Hokkaido (Japan), with comments on feeding in derived desmostylids.2015

    • Author(s)
      Chiba, K., Fiorillo, A. R., Jacobs, L. L., Kimura, Y., Kohno, N., Kobayashi, Y., Nishida, Y., Polcyn, M. J. and Tanaka, K.
    • Journal Title

      Historical Biology

      Volume: 27 Issue: 1-2 Pages: 289-303

    • DOI

      10.1080/08912963.2015.1046718

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 北海道苫前郡羽幌町築別川流域の三毛別層上部層より産出したPaleoparadoxiaについて.2014

    • Author(s)
      長谷川善和・浅見清秀・木村敏之・松井久美子・甲能直樹
    • Journal Title

      群馬県立自然史博物館研究報告

      Volume: 18 Pages: 33-43

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] エナメル質アパタイトを用いた炭素・および酸素安定同位体比分析:化石哺乳類の生態復元に向けて2013

    • Author(s)
      鵜野 光・米田 穣・樽 創・甲能直樹
    • Journal Title

      化石(古生物学会和文誌)

      Volume: 94 Pages: 33-43

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] Life history of Desmostylus (Mammalia: Afrotheria) as inferred from δ13C and δ18O variation.2014

    • Author(s)
      Uno, H. and Kohno, N.
    • Organizer
      7th Conference on Secondary Adaptation of Tetrapods to Life in Water (George Mason University, Virginia, USA).
    • Place of Presentation
      George Mason University (Virginia, USA)
    • Year and Date
      2014-06-02 – 2014-06-04
    • Related Report
      2014 Annual Research Report
  • [Presentation] 日本産DesmostylusとPaleoparadoxiaの堆積環境に見られる生息地戦略2014

    • Author(s)
      松井久美子・指田勝男・上松佐知子・甲能直樹
    • Organizer
      日本生態学会第61回全国大会
    • Place of Presentation
      広島国際会議場
    • Related Report
      2013 Research-status Report
  • [Presentation] Intra-tooth variation in multi-elementary isotope analyses along growth-lines of tooth enamel of Desmostylus (Mammalia, Afrotheria)2013

    • Author(s)
      Uno, H., Taru, H. and Kohno, N.
    • Organizer
      73rd Annual Meeting of the Society of Vertebrate Paleontology
    • Place of Presentation
      Natural History Museum of Los Angeles County
    • Related Report
      2013 Research-status Report
  • [Presentation] デスモスチルスのエナメル質の成長線に沿った同位体分析に基づく生活史復元

    • Author(s)
      鵜野 光・樽 創・甲能直樹
    • Organizer
      日本古生物学会2013年年会
    • Place of Presentation
      熊本大学
    • Related Report
      2012 Research-status Report
  • [Presentation] 福島県伊達市の中部中新統梁川層から産出したパレオパラドキシア全身骨格化石の再検討

    • Author(s)
      樽 創・甲能直樹
    • Organizer
      日本古生物学会第162回例会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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