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Reconstruction of the extinct Ezo wolf's diet to understand their ecological role in the past ecosystem

Research Project

Project/Area Number 16K18627
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Ecology/Environment
Research InstitutionJapan Agency for Marine-Earth Science and Technology (2017)
Research Institute for Humanity and Nature (2016)

Principal Investigator

MATSUBAYASHI Jun  国立研究開発法人海洋研究開発機構, 生物地球化学研究分野, 特別研究員(PD) (30756052)

Project Period (FY) 2016-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsエゾオオカミ / 同位体 / 絶滅種 / 食性復元 / 安定同位体 / 絶滅動物 / 同位体分析 / 骨 / 生態学 / 食性履歴
Outline of Final Research Achievements

On Hokkaido, Japan, the Ezo wolf (Canis lupus hattai), an apex predator, became extinct at the end of the 19th century. To infer the ecological role of the Ezo wolf in the past ecosystem, I performed carbon and nitrogen stable isotope analysis and radiocarbon dating of bone specimens of the wolf and its prey species. Radiocarbon dating suggested that most of the wolves examined came from different populations or generations. The discrimination-corrected isotopic ratios of five of the seven wolves were almost the same as those of Sika deer at the same sites. In contrast, those of two wolves had clearly higher isotopic values than those of deer, suggesting that these wolves depended partly on marine prey such as salmon and marine mammals. Thus, Ezo wolves had similar ecological roles to Canadian grey wolves, and were a second subspecies shown to have fed on a marine diet, in addition to the 'coastal wolves' of British Columbia.

Report

(3 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • Research Products

    (8 results)

All 2017 2016 Other

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

  • [Journal Article] Reconstruction of the extinct Ezo wolf’s diet.2017

    • Author(s)
      Matsubayashi, J., Ohta, T., Takahashi, O. and Tayasu, I.
    • Journal Title

      Journal of Zoology

      Volume: 印刷中 Issue: 2 Pages: 88-93

    • DOI

      10.1111/jzo.12436

    • Related Report
      2017 Annual Research Report 2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Incremental analysis of vertebral centra can reconstruct the stable isotope chronology of teleost fishes2017

    • Author(s)
      Matsubayashi Jun、Saitoh Yu、Osada Yutaka、Uehara Yoshitoshi、Habu Junko、Sasaki Tsuyoshi、Tayasu Ichiro
    • Journal Title

      Methods in Ecology and Evolution

      Volume: 8 Issue: 12 Pages: 1755-1763

    • DOI

      10.1111/2041-210x.12834

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Testing for a predicted decrease in body size in brown bears (Ursus arctos) based on a historical shift in diet.2016

    • Author(s)
      Matsubayashi, J., Tayasu, I., Morimoto, J.O. and Mano, T.
    • Journal Title

      Canadian Journal of Zoology

      Volume: 印刷中 Issue: 7 Pages: 489-495

    • DOI

      10.1139/cjz-2016-0046

    • Related Report
      2017 Annual Research Report 2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 絶滅したエゾオオカミ(Canis lupus hattai)の食性復元2017

    • Author(s)
      松林順
    • Organizer
      日本生態学会第64回全国大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Dietary reconstruction of the extinct Ezo wolf (Canis lupus hattai)2017

    • Author(s)
      Jun Matsubayashi, Ichiro Tayasu
    • Organizer
      IsoEcol 2016
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 絶滅したエゾオオカミ(Canis lupus hattai)の食性復元2017

    • Author(s)
      松林 順
    • Organizer
      日本生態学会第64回全国大会
    • Place of Presentation
      慶応大学
    • Related Report
      2016 Research-status Report
  • [Presentation] 魚類・哺乳類の骨の分析から、軽元素同位体比の「履歴」を復元する2017

    • Author(s)
      松林 順
    • Organizer
      日本生態学会第64回全国大会
    • Place of Presentation
      慶応大学
    • Related Report
      2016 Research-status Report
  • [Remarks] 北海道にもいた!?海辺のオオカミ 絶滅したエゾオオカミの食性の復元

    • URL

      http://www.chikyu.ac.jp/publicity/news/2017/img/0125.pdf

    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2019-03-29  

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