Constraints on feeding type in ruminants : a case for morphology over phylogeny

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Ruminants were categorized into three feeding types: grazers, mixed feeders and browsers based on their food habits. We studied how phylogeny constrains the feeding types, the morphology of digestive organs, and their relationships in Cervidae and Bovidae. It is shown that species with different feeding types occur in the same phylogenetic group of the family, subfamily, and tribe. This suggests that phylogeny does not always reflect feeding type. Comparisons of three morphological indices of digestive organs (parotid gland size, rumino-reticulum capacity, and rumino-reticulum contents weight) among feeding types found that trends along the grazer-browser continuum were similar in both families. The index values of the same feeding types were similar in the two families. These results suggest that the morphology of digestive organs is closely related to feeding types, and that phylogenetic characteristics are less important. The species in the same feeding type also share other morphological characteristics of digestive organs, irrespective of phylogeny.

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 24(2), 79-89, 1999-12-01

    日本哺乳類学会

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各種コード

  • NII論文ID(NAID)
    10013372282
  • 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
    5356110
  • 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  NDL  J-STAGE 
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