Auricularia - Auricularia

Japanese: アウリクラリア - あうりくらりあ
Auricularia - Auricularia

…However, some starfishes nurse their young for a period of time, or go directly to adulthood after viviparity. The larvae of sea urchins are called echinopluteus, those of brittle stars are called ophiopluteus, those of starfish are called bipinnaria, and those of sea cucumbers are called auricularia. They have a strong ability to regenerate, and starfishes can regenerate an entire arm from a single one if the central disc is still attached. …

From [Sea cucumber]

...There is only one gonad, which opens on the back near the tentacles. After the eggs are fertilized in the sea, they hatch and become auricularia, then doliolaria, and pentactula before becoming adults, but some become doliolaria immediately. The sea cucumber's cloaca often houses the sea cucumber, which is about 15 cm long.

*Some of the terminology explanations that mention "Auricularia" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…しかし,ヒトデ類の中で,ある期間保育したり,胎生を経て直接成体になるものもある。ウニ類の幼生はエキノプルテウスechinopluteus,クモヒトデ類の幼生はオフィオプルテウスophiopluteus,ヒトデ類の幼生はビピンナリアbipinnaria,ナマコ類の幼生はアウリクラリアauriculariaと呼ばれている。再生力が強く,ヒトデ類では中央の盤がついていれば1本の腕から全体を再生することもできる。…

【ナマコ(海鼠)】より

…生殖腺は1個のみで,触手付近の背中側に開口する。海中で受精した卵は孵化(ふか)したあと,アウリクラリア幼生auriculariaとなり,次いでドリオラリア幼生doliolaria,ペンタクチュラ幼生pentactulaに変態して成体になるが,すぐにドリオラリア幼生になるものもある。 フジナマコの総排出腔には体長15cm内外のカクレウオがよく共生する。…

※「アウリクラリア」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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