A monotreme member of the Platypus family. Body length 30-45cm. Its name comes from the resemblance of its mouth to a duck's beak. It has paws on its legs, which are adapted to life underwater. Its hair is dense and velvety black-brown. It is semi-aquatic and lives in holes near water. Males have claws on their hind legs that contain poison glands. Females lay 2-3 eggs, each about 18mm in diameter. The young that hatch from the eggs grow on their mother's milk. It eats earthworms, crayfish, frogs, etc. It is found in eastern Australia and Tasmania, inhabiting lush lowlands near rivers and lakes, and forests up to 2000m above sea level. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
単孔目カモノハシ科。体長 30~45cm。口の部分がカモの嘴に似ているのでその名がある。四肢には蹼 (みずかき) があり,水中生活に適応している。毛は黒褐色のビロード様で,密に生えている。半水生で,水辺の穴にすむ。雄の後肢には毒腺をそなえた距 (けづめ) がある。雌は長径 18mmぐらいの卵を2~3個産む。卵からかえった子は親の乳を飲んで育つ。ミミズ,ザリガニ,カエルなどを食べる。オーストラリア東部,タスマニア島に分布し,川や湖の近くの植物が茂った低地から標高 2000mまでの森林に生息する。
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