| 单词 | water flea |
| 释义 | > as lemmaswater flea water flea n. †(a) a whirligig beetle (family Gyrinidae) (obsolete); (b) any of various tiny freshwater cladoceran crustaceans, esp. of the genus Daphnia, which swim by flicking their branched antennae. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Crustacea > [noun] > subclass Entomostraca > order Phyllopoda > suborder Cladocera > member of water flea1572 Daphnia1847 daphnioid1852 cladoceran1909 1572 J. Higgins Huloets Dict. (rev. ed.) Flea, called a water flea, a litle round & blacke one, somewhat bigger then a flea, that vpon standing waters moste swiftely ronneth, and is rare or neuer quiet, but mouing still. 1673 J. Ray Observ. Journey Low-countries 218 Squillæ Venetianæ i. e. Venice-shrimps,..are of that sort which naturalists call Pulices marini or aquatici, i. e. Sea-fleas or water-fleas. 1752 J. Hill Gen. Nat. Hist. III. 52 The smooth short-horned Dytiscus..is called by some Pulex aquaticus, the water Flea. 1866 E. C. Rye Brit. Beetles 66 The Gyrini, commonly known as ‘water-fleas’, ‘whirlwigs’, or ‘whirligigs’. a1933 J. A. Thomson Biol. for Everyman (1934) I. xi. 231 Among the lower crustaceans, such as water-fleas and acorn-shells, the commonest larva is a Nauplius. 2001 Trop. Fish Hobbyist Apr. 23 The dwarf gourami..prefers live foods, such as tubifex, mosquito larvae, daphnia (water fleas), and cyclops. < as lemmas |
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