...Their fur has a marbled appearance due to the black, brown, yellow or white bands. The most well-known species, the Canadian porcupine ( Erethizon dorsatum ) lives in tree holes, earthen holes and rock caves, is mainly nocturnal and feeds mainly on evergreen needles, the cambium layer of the trunk and bark. They are solitary except during the breeding season, but in winter many individuals may gather at feeding grounds. *Some of the terminology that mentions "Erethizon dorsatum" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…体毛は黒色,褐色,黄色あるいは白色の帯模様をもつため霜降り状を呈する。もっともよく生態が知られているカナダヤマアラシErethizon dorsatum(イラスト)は樹洞,土穴,岩穴などにすみ,おもに夜行性で,常緑の針葉,幹の形成層,樹皮を主食とする。繁殖期以外は単独でいるが,冬に採食場へたくさんの個体が集まることがある。… ※「Erethizon dorsatum」について言及している用語解説の一部を掲載しています。 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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