Also known as the river otter mouse. An aquatic mammal that resembles an otter (Carnivora, Mustelidae). Insectivore, Potamogalidae. Like otters, it has a cylindrical body, short limbs, a thick, long tail, and small eyes and ears. Its nostrils can be closed underwater. Its flat snout has thick tentacles that it uses to search for prey in the water. For an insectivore, it is large, with a body length of 29-35 cm and a tail length of 25-29 cm. Its dorsal body color is dark brown and its ventral surface is yellowish white. Its limbs are not webbed, and it obtains propulsion through the water by swinging its flat-tipped tail from side to side. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
別名,カワウソジネズミ。カワウソ(食肉目イタチ科)に似た姿をした水生の哺乳類。食虫目ポタモガーレ科。カワウソ同様,円筒状の胴に短い四肢と太く長い尾をもち,目と耳は小さい。鼻孔は水中で閉じることができる。扁平な口吻(こうふん)部には,水中で獲物をさぐるのに使われる太い触毛が生える。食虫類としては体が大きく,体長29~35cm,尾長25~29cm。体色は,背面は暗い茶色,腹面は黄色みを帯びた白色。手足に水かきはなく,水中を進むための推進力は,先が左右に扁平な尾を振ることによって得られる。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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