Habitat network structure of medium-sized carnivores in a highly urbanized landscape

• Project/Area Number: 17K12840
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Environmental and ecological symbiosis
• Research Institution: Yamagata University
• Principal Investigator: Saito Masayuki 山形大学, 農学部, 助教 (90466003)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2017: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 中型食肉目 / タヌキ / 都市生態 / 景観遺伝 / 都市 / 遺伝的交流 / 食肉目 / 行動圏 / 分散

Outline of Final Research Achievements

The location data of raccoon dogs tracked by GPS telemetry in central Tokyo revealed that some raccoon dogs used the green space intensively and others used it outside the green space. I analyzed the genetic structure of raccoon dogs inhabiting the Tokyo area using DNA attached to their feces and hairs and evaluated their movement between populations, suggesting that their movement may be limited by weak interhabitat connections caused by urban land use. The raccoon dog population in the Tokyo area was found to be highly segregated.

Academic Significance and Societal Importance of the Research Achievements

個体の移動は資源の獲得や分散において重要な役割を果たす。本研究は都市に生息するタヌキを対象にその評価をおこなった結果、遺伝的交流の観点からは都市的土地利用はタヌキの移動を妨げることが示唆された。このような知見は都市に暮らす哺乳類の生態を理解するために重要である。また、このような知見は生態系ネットワーク形成を考慮する際にも活用が期待される。

Research Products

• [Journal Article] 行動圏サイズに基づく東京都におけるニホンアナグマの生息の検討 (2020)
  • Author(s): 白濵秀至・斎藤昌幸・金子弥生
  • Journal Title: 哺乳類科学 Volume: 印刷中
  • NAID: 130007884378
  • Peer Reviewed
• [Journal Article] Winter Diet of the raccoon dog (Nyctereutes procyonoides) in Urban Parks, Central Tokyo (2018)
  • Author(s): Enomoto, T., Saito, M. U., Yoshikawa, M. and Kaneko, Y.
  • Journal Title: Mammal Study Volume: 43 Issue: 4 Pages: 275-280
  • DOI: 10.3106/ms2018-0024
  • NAID: 210000177850
  • Peer Reviewed
• [Journal Article] Why study urban biodiversity? Evidence from Japanese case studies (2018)
  • Author(s): 土屋一彬・斎藤昌幸
  • Journal Title: Japanese Journal of Conservation Ecology Volume: 23 Issue: 2 Pages: 265-278
  • DOI: 10.18960/hozen.23.2_265
  • NAID: 130007552982
  • ISSN: 1342-4327, 2424-1431
  • Peer Reviewed
• [Journal Article] 景観生態学的アプローチにおいて都市化の指標として用いられる人口密度と都市的土地利用の関係とその地域差 (2018)
  • Author(s): 斎藤昌幸・土屋一彬・倉島 治・伊藤元己
  • Journal Title: 応用生態工学 Volume: 2018 Pages: 205-212
  • NAID: 130006733780
  • Peer Reviewed
• [Journal Article] Carnivore studies in urban areas (2017)
  • Author(s): 斎藤昌幸・金子弥生・増田隆一・園田陽一・保坂哲朗
  • Journal Title: Honyurui Kagaku (Mammalian Science) Volume: 57 Issue: 1 Pages: 157-158
  • DOI: 10.11238/mammalianscience.57.157
  • NAID: 130005745556
  • ISSN: 0385-437X, 1881-526X
• [Journal Article] Symptomatic Raccoon Dogs and Sarcoptic Mange Along an Urban Gradient (2017)
  • Author(s): Saito, M. U., Sonoda, Y.
  • Journal Title: EcoHealth Volume: 14 Issue: 2 Pages: 318
  • DOI: 10.1007/s10393-017-1233-1
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 東京都心部の公園緑地におけるタヌキの冬期の食性 (2017)
  • Author(s): 榎本孝晃・斎藤昌幸・吉川正人・金子弥生
  • Organizer: 日本哺乳類学会2017年度大会
• [Book] 森林と野生動物 (2019)
  • Author(s): 小池 伸介、山浦 悠一、滝 久智
  • Total Pages: 300
  • Publisher: 共立出版
  • ISBN: 9784320058279