| 单词 |
ephyrula |
| 释义 |
ephyra, ephyrula Zool.|ˈɛfɪrə, ɛˈfɪrjʊlə|
[mod.L. (F. Peron 1809, in Ann. du Muséum d'Hist. naturelle XIV. 354), f. Gr. Ἐϕύρα, Ionic -η, L. Ephyrē, name of a Nereid and of an Oceanid. Ephyrula is a diminutive.]
A larval jellyfish, after separation from the scyphistoma.
1861J. R. Greene Man. Anim. Kingdom II. ii. 66 Each Ephyra soon acquires a nutritive system. 1897Parker & Haswell Text-bk. Zool. I. iv. 161 The saucer-like bodies separate from one another, and each, turning upside down, begins to swim about as a small jelly-fish called an Ephyrula... The umbrella of the ephyrula is divided into eight long bifid arms. 1898A. Sedgwick Student's Text-bk. Zool. I. iv. 166 In rare cases (Pelagia) the development is simplified, and the larva passes directly into the Ephyra. 1916H. S. Pratt Man. Invertebr. Anim. 125 Each disc is called an ephyra..and is a young medusa or jellyfish, which on becoming free grows in time to be a sexual animal. 1940L. H. Hyman Invertebrates I. vii. 507 This [sc. the scyphistoma] is often followed by a young, free-swimming medusan stage, the ephyra (or ephyrula). 1967P. A. Meglitsch Invert. Zool. vi. 153 (caption) Scyphistomae live for several years..producing larval medusae known as ephyrae by transverse fission. |
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