Riftia pachyptila (English spelling)

Japanese: Riftia pachyptila(英語表記)Riftiapachyptila
Riftia pachyptila (English spelling)

...They are commonly called beard worms (illustration). They are thread-like, thin animals with a body width of about 0.1 to 1 mm that usually live on the deep sea floor at depths of 100 to several thousand meters, but they have recently been discovered on the sea floor at a depth of 20 meters in Tsukumo Bay on the Noto Peninsula, and a huge species, the Galapagos tube worm Riftia pachyptila , with a body length of 150 cm and a body width of 4 cm, has been discovered in the Galapagos Rift Zone (depth 2450 to 2500 m). The body is cylindrical and divided into anterior, middle, posterior, and terminal parts, and the body cavities inside the body are also divided by diaphragms. ...

*Some of the terminology that mentions "Riftia pachyptila" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…一般にはヒゲムシ(イラスト)と呼ばれる。ふつう100~数千mの深海底までにすむ体幅0.1~1mmくらいの糸のような細い動物体であるが,最近,能登半島九十九湾の水深20mの海底からも発見されており,またガラパゴス地溝帯(水深2450~2500m)から体長150cm,体幅4cmの巨大な種類ガラパゴスハオリムシRiftia pachyptilaが発見されている。 体は円筒状で,前体,中体,後体,終体に分かれ,体内の体腔もそれぞれ隔膜で仕切られている。…

※「Riftia pachyptila」について言及している用語解説の一部を掲載しています。

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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