A comparison of the point-frame method with the frequency method in fecal analysis of an omnivorous mammal, the raccoon dog

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Results of the point-frame (PF) method and the frequency (FR) method were compared by use of 340 fecal samples of the raccoon dog (<i>Nyctereutes orocyonoides</i>) collected in the western suburb of Tokyo, Japan. The fecal contents were categorized into 63 food categories. Proportion of each food category to the fecal composition (P%) and frequency (F%) were determined. Twelve food categories whose P% were >2% were selected as "important food categories". Their annual F% ranged from 5.9% (potato) to 64.8% (monocot leaves). The high F% and great P% type included monocot leaves and insects. The high F% and small P% type included forb leaves and browse leaves which are frequently available but not preferably utilized by the raccoon dog. The low F% and great P% type included mushroom and gingko nut. These foods are seasonal and preferably utilized by the raccoon dog. Other 6 categories had low F% and small P%. The PF method is advantageous in that it is precise, time-saving, and provides FR as well. Synthetic use of both F% and P% by the PF method is recommended, because the combination of P% and F% provides the ecological significance of the characters of foods and F% evaluation without P% or based on a small sample size is imprecise or less informative.<br>

収録刊行物

  • Mammal study = The Continuation of the Journal of the Mammalogical Society of Japan  

    Mammal study = The Continuation of the Journal of the Mammalogical Society of Japan 32(1), 1-5, 2007-06-01 

    日本哺乳類学会

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各種コード

  • NII論文ID(NAID)
    10018878830
  • NII書誌ID(NCID)
    AA11185060
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13434152
  • NDL 記事登録ID
    8690180
  • NDL 雑誌分類
    ZR4(科学技術--生物学--動物)
  • NDL 請求記号
    Z54-G149
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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