内水面に棲息する雁鴨科鳥類に於ける生活形に関する研究 : II.翼面積

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The present paper deals with the studies on the wing-area, one of life forms, of the Geese and Ducks by the same method and materials as we used in the case of the previous studies on the web membrane-atea. 1. The Geese and Ducks are divided into two groups by the allometric tribe and the ratio of body weight to wing-area. One group has a higher valuue of the ratio of body weight to wing-atea, the other has a lower one. 2. These group divisions do not perfectly fit to the classification in taxonomy, but comepletly to two great life form societies of Geese and Ducks proposed by the present author. That is, these divisions are connected with their Niche deeply. 3. Moreover, judging from the fact that a is smaller than 1.0 in both allometric tribes, the body weight is inversely proportional to the wing area in those groups, and its reason will be elucidated in future.
社団法人日本動物学会の論文
1957-12-15