| 翻訳と辞書 |
| Echinus esculentus ： ウィキペディア英語版 |
Echinus esculentus
''Echinus esculentus'', the European edible sea urchin or common sea urchin, is a species of marine invertebrate in the Echinidae family. It is found in coastal areas of western Europe down to a depth of .〔(Marine Species Identification Portal )〕 It is considered "Near threatened" in the IUCN Red List of Threatened Species.
==Description==
''E. esculentus'' is approximately spherical but slightly flattened at both poles. It is reddish or purplish with white tubercles and grows to about ten centimetres in diameter. The brittle, limy test is rigid and divided into five ambulacral areas separated by five inter-ambulacral areas. There are two rows of plates in each of these areas, making twenty rows of plates in total. The test is covered in spines each articulating with a tubercle. There is a dense covering of secondary spines and a smaller number of longer, primary spines, carried on each second or third ambulacral plate. The spines are blunt ended and usually white with purplish tips. There is a radially symmetrical pattern of holes in the ambulacral areas through which the tube feet emerge. On the buccal plates round the mouth on the underside are pedicellariae, defensive organs like minute pincers, each with two lateral teeth and one terminal tooth.〔〔John Barrett and C M Young, Collins Pocket Guide to the Sea Shore (1958) p.181〕 It typically reaches a diameter of , but has been recorded to .〔MarLIN: ''(Edible sea urchin - Echinus esculentus. )'' Retrieved 11 September 2014.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Echinus esculentus」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|