A coelenterate (Cnidaria) of the family Mycteriaceae in the class Anthozoa. It has been reported from depths of 50-200m in Sagami Bay and 580-1780m in the North Atlantic. It attaches to the snail shell in which a type of hermit crab lives, and gradually dissolves the shell until the zoanthid attaches directly to the hermit crab. Up to 10 zoanthids gather together to form a colony about 6cm long and 4cm wide. The coenchyma is about 1cm thick and transparent blue, purple-gray, or gray-brown. The contracted zoon is 2-2.5cm tall and has orange tentacles. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
花虫綱ヤドリスナギンチャク科の腔腸動物(刺胞動物)。相模湾の水深50~200m,北大西洋の水深580~1780mから報告されている。ヤドカリの一種がすむ巻貝の上に付着したものが,しだいに貝殻をとかして,ついにはスナギンチャクが直接ヤドカリの上につくようになる。10個以下のスナギンチャクが集まって長さ6cm,幅4cmほどの群体をつくる。共肉は厚さ1cmほどで,透明な青色,紫灰色や灰褐色。収縮した個虫は高さ2~2.5cmで触手は橙色である。
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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