The Acute Toxicity of Two Organophosphorus Pesticide to Brachionus Plicatilis

Abstract

本文研究了二种有机磷农药敌百虫和久效磷对褶皱臂尾轮虫(Brachionus plicatilis)的急性毒性和对褶皱臂尾轮虫孵化率的影响。试验结果表明:褶皱臂尾轮虫的孵化率随着有机磷农药浓度的增加而降低,孵化时间随之增加,敌百虫和久效磷对褶皱臂尾轮虫的48 h半致死浓度(LC50)分别是2.876 7 mg/L和0.0534mg/L。This paper reports that the acute toxicity of trichlorphos and monocrotophos to Brachionus plicatilis,and the effect of the hatching rate of these two organophosphorus pesticides on Brachionus plicatilis.The results showed that the hatching rate of Brachionus plicatilis reduced and the hatching time increased with the concentration of these organophosphorus pesticides increasing.The 48 h(LC_(50)) of trichlorphos and monocrctophos is 2.8767 mg/L and 0.0534 mg/L respectively.福建省青年科技人才创新项目(2003J003

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