Long-distance movement of a sub-adult female Asian black bear during summer

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  • Takii Akiko
    Shinshu University Institute of Mountain Science Present address: Shinshu University Institute for Mountain Science
  • Takahata Chihiro
    Shinshu University Institute of Mountain Science Present address: Research Faculty of Agriculture, Hokkaido University
  • Izumiyama Shigeyuki
    Shinshu University Institute of Mountain Science Present address: Shinshu University Institute for Mountain Science

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Other Title
  • ツキノワグマ亜成獣メスによる夏季における長距離移動
  • ツキノワグマ アセイジュウ メス ニ ヨル カキ ニ オケル チョウキョリ イドウ

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Abstract

<p>We recorded long-distance movement of a sub-adult female Asian black bear (Ursus thibetanus) during summer. The two-year-old individual left its natal home range on May 30, 2012, and had not returned by the time tracking was terminated on August 29, 2012. During this 91-day period, the bear travelled a total of 323.56 km and had covered a 95% minimum convex polygon home range of 457.95 km2. The home range size of this individual was remarkably large compared to that of 14 other bears captured in the same area (3.50–332.40 km2). The two-year-old female bear had moved across the area of the Bear Management Unit, and it crossed two different national roads after 9 and 23 days, respectively. The observed movement behavior of this bear may be an effect of natal dispersal.</p>

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