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water flea 【動物;動物學】水蚤。

water gap

In this paper two - generation reproduction toxicity of fenvalerate , a - cypermethrin , chlorpyrifos , and triazophos was tested in a 21d period with water flea , daphnia magna , . the toxicity indicator included longevity , body length , days to first brood , days to first pregnancy , number of youth per female , intrinsic rate of natural increase ( r ) , and number of broods per female . accordingly , the dose - response relations and relations between the chronic responses and enzyme levels were investigated 為了確定水蚤體內生化指標與慢性毒害效應之間的關系,特別是在低濃度暴露狀態下生化指標改變的生物學意義,以便能更準確預測早期農藥對水蚤種群的潛在危害,本文以浙江省常用殺蟲劑氰戊菊酯、高效氯氰菊酯、三唑磷和毒死蜱進行了大型蚤( d . magna )的急性和慢性毒性試驗(包括子代水蚤的恢復試驗) 。

The results showed that toxic m . aeruginosa delayed the growth and reproduction of the water fleas because the algae hindered reproduction of the water fleas 試驗結果表明,有毒的微囊藻不僅明顯延緩大型?的生長,而且阻礙蟲體的懷卵和發育,并造成幼體產出困難、導致大型?死亡率升高。

Water fleas daphnia magna was fed both toxic alga microcystis aeruginosa ds and nontoxic alga m . aerztginosa 573 for 7 ~ 14 days under laboratory condition 摘要用銅綠微囊藻有毒株ds和無毒株573喂養大型? ,觀察微囊藻對蟲體的生長和繁殖的影響。

The nontoxic m . aeruginosa , however , had no negative effects on the growth of the water fleas 無毒微囊藻雖然不影響蟲體的生存,但影響其懷卵量和幼體產出。

Acute toxicities of two organphosphorous pesticides to water fleas moina mongolica 敵百蟲和久效磷農藥對蒙古裸腹?的急性毒性研究

Culture method of water flea 微塵子養殖法