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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Acropora cytherea ： ウィキペディア英語版 Acropora cytherea ''Acropora cytherea'' is a stony coral which forms horizontal table like structures. It occurs in the Indo-Pacific Ocean in areas with little wave action, favouring back reef environments from depth. ==Description== ''Acropora cytherea'' is a colonial species of coral that grows in large horizontal plates. These are formed of many tiny branchlets growing vertically or at an angle and others growing horizontally to extend the colony. They may branch and link together and near the centre the plates may become a solid mass of joined branchlets. The surface of the coral is covered by a thin layer of living tissue. This has a rough surface and contains ''zooxanthella'', symbiotic, unicellular, photosynthetic algae. These give the coral its cream or pale brown colour (occasionally pale blue).〔 The calcium carbonate skeleton is secreted by many small polyps which are joined together through an interconnecting network of channels inside the skeleton. At night, and sometimes during the day, the polyps protrude from the skeleton and extend their tentacles to feed. At other times, they contract back into the safety of the skeleton. In older specimens, particularly those exceeding in diameter, the regular structure sometimes breaks down near the centre and there are growth anomalies. It has been found that these are not deleterious to the survival of the coral and may be caused by stress factors such as raised sea temperatures. 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「Acropora cytherea」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.