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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 Parazoanthus parasiticus ： ウィキペディア英語版 Parazoanthus parasiticus ''Parazoanthus parasiticus'', commonly known as the sponge zoanthid, is a species of coral in the order Zoantharia which grows symbiotically on several species of sponge. It is found in shallow waters in the Caribbean Sea and the Gulf of Mexico. ==Description== The polyps of ''Parazoanthus parasiticus'' superficially resemble rather small sea anemones. They grow either singly or in small groups of two or three on the surface of certain species of sponge. The polyps are joined by a thin layer of tissue called coenenchyme and occur at densities of 3 to 10 per square centimetre (20 to 60 per square inch). The distances between the polyps widens as they spread out over the surface of the host sponge by budding. The polyp's column is encrusted with sand particles and calcareous material and is white. The oral disc is up to in diameter and there are two rings of tentacles round the edge with about 14 tentacles in each. These are brown and contain symbiotic zooxanthellae, unicellular photosynthetic algae which supply the polyp with nutrients while benefiting from its nitrogenous waste. 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「Parazoanthus parasiticus」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.