A small, bioluminescent crustacean of the family Cyprinodontidae in the subclass of Ostracoda (Ostracoda), with a bivalve-shaped shell (illustration). It is about 3 mm long. Its body is completely covered on both sides by an egg-shaped, chitinous, milky-white carapace. The left and right shells are connected by adductor muscles and a hinge on the back, and there are deep slits on the front edge through which antennae emerge. It has compound eyes. It is dioecious. A luminous substance secreted from a gland in its upper lip is released into the seawater when stimulated, causing it to glow. It is abundant along the Pacific coast of Japan from summer to autumn. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
二枚貝状の殻をもった発光性の貝虫(介形)亜綱ウミホタル科の小型甲殻類(イラスト)。体長3mmくらい。体は両側から卵形貝殻状をしたキチン質,乳白色の背甲で完全に包まれている。左右の殻は閉殻筋と背面のちょうつがいとによって結ばれ,前縁に触角を出す深い切れ込みがある。複眼をもつ。雌雄異体。上唇の腺から分泌される発光物質は,刺激によって海水中に放出され発光する。日本の太平洋沿岸では夏から秋にかけて多産する。
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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