Eboya (Styela clava)

Japanese: エボヤ(柄海鞘) - エボヤ（英語表記）Styela clava

A protochordate (illustration) of the family Eboyidae of the class Urochordate. Widely distributed throughout Japan, it attaches itself to rocks with the end of its long stalk, and often attaches to the bottom of aquaculture rafts and boats, causing damage. Its body is yellowish brown and slender, with a total length of about 10 cm including the stalk. Its surface is leathery and hard, with many irregular grooves and projections. The entry and exit openings are at the front end of the body, but the entry tube is often curved slightly ventrally. It is hermaphroditic. The fascial body is sometimes eaten. [Imajima Minoru]

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

尾索綱エボヤ科の原索動物（イラスト）。日本各地に広く分布し，長い柄の先で岩などにつくほか，養殖いかだや船底に付着して害を与えることが多い。体は黄褐色で細長く，柄部と合わせて全長10cm内外。表面は革状で硬く，不規則な溝や突起が多い。入水孔と出水孔は体の前端にあるが，入水管はやや腹側に曲がることが多い。雌雄同体。筋膜体を食用にすることもある。【今島実】

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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