| 翻訳と辞書 |
| Echinaster spinulosus ： ウィキペディア英語版 |
Echinaster spinulosus
''Echinaster spinulosus'', the small spine sea star, is a species of sea star found in shallow parts of the western Atlantic Ocean, the Caribbean Sea and Gulf of Mexico.
==Description==
''Echinaster spinulosus'' is a medium sized sea star with five long tapering arms, round in cross section, attached to a central disc. Near one edge of this is the madreporite, a structure used for drawing in water to replenishing the water vascular system. The aboral or upper surface is covered in flat plates, each of which bears several short, blunt spines. These plates are quite prominent. They have fine granulations and are arranged in fifteen to twenty irregular rows that continue down the arms. On the margin of the arms are a row of plates with flattened spines and on the oral (under) surface, on either side of the ambulacral grooves, are larger plates, each bearing one small and two larger spines. In the grooves there are several rows of bright orange tube feet with suckers. The tips of the arms bear tiny orange eye spots and are often turned upwards. This sea star grows to about in diameter and its general colour is maroon or brown flecked with white.〔(【引用サイトリンク】title=''Echinaster spinulosus'' )〕 The body wall of the disc and arms is composed of collagen fibres arranged in a three-dimensional web with calcareous plates in between. This arrangement provides a protective surface with flexibility when the sea star moves around and rigidity when required.〔
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「Echinaster spinulosus」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.
|
|