The larva is ingested by a water flea ( cyclops ) where it develops and becomes infective in two weeks .

幼虫通过 水蚤（剑水蚤属）进入人体，在那里发育并在两周后具有感染性。

The essay reported the testing method and results of toxicity research of the pesticide to a water flea Daphnia Magna .

本文报道了新杀菌剂叶青双对 水蚤毒性的测定方法和结果。

Observation of Internal Texture of Live Water Flea

水蚤内部结构的活体观察

The growth condition of ? Polypedates megacephalus ? Tadpoles were observed when fed respectively with algae egg yolk water flea and eel fodder .

以藻类、蛋黄、 水氵 蚤和鳗鱼饵料为饵料饲喂斑腿泛树蛙蝌蚪，观察其生长情况。

The compositions of fatty acids of water flea Daphnia pulex cultured in liquid of Banta ( 1.5 g cow dung ; 2 g rice straw ; 20 g good soil ; 1000 ml water ) bread yeast and Chlorella sp. were determined by GC / MS.

在Banta液（牛粪1.5g+干稻草 2g+沃土20g+ 水1000ml）、酵母、小球藻三种培养条件下，比较研究了 蚤状的脂肪酸组成。