...Eurasian ground squirrels and North American ground squirrels are sometimes called ground squirrels, and in this case, the former generally have shorter limbs and tails, a stockier body, and tend to be more subterranean. There are about 30 known species, including the European ground squirrel C. citellus , the golden-backed ground squirrel C. lateralis , the thirteen-lined ground squirrel C. tridecemlineatus , the California ground squirrel C. beecheyi , and the Arctic ground squirrel C. undulatus (illustration). All species are diurnal and active during the day, and usually live in groups in a large burrow connected by complex, intricate tunnels up to 20 meters long. ... *Some of the terminology that refers to the "California ground squirrel" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ユーラシアのものをハタリス,北アメリカのものを狭義のジリスと分けて呼ぶことがあり,この場合,前者のほうが一般に四肢と尾が短く,体つきはずんぐりしていて,より地下性の傾向が強い。ヨーロッパハタリスC.citellus,キンイロジリスC.lateralis,ジュウサンセンジリスC.tridecemlineatus,カリフォルニアジリスC.beecheyi,ホッキョクジリス(オナガホッキョクジリス)C.undulatus(イラスト)など,30種ほどが知られている。 どの種も昼間活動する昼行性で,ふつう複雑に入り組んだ長さ20mに達するトンネルでつながった一つの大規模な巣穴に集団ですむ。… ※「カリフォルニアジリス」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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