不同类型农药对斑马鱼的急性毒性与安全评价

[目的]测定不同类型的农药对斑马鱼的毒性。[方法]以斑马鱼为试材,采用半静态法在室内测定了10种不同类型农药对斑马鱼的急性毒性并对其进行安全评价。[结果]不同农药对斑马鱼的毒性差异较大,但所测药剂的LC50值均随时间延长而变小,毒性增加。[结论]根据96 h的LC50值,25%氟虫腈悬浮剂和8%精喹禾灵微乳剂对斑马鱼高毒;10%吡唑草胺乳油、5%己唑醇悬浮剂、40%乙草胺可湿性粉剂、30%三环.异稻可湿性粉剂和65%噻嗪酮可湿性粉剂对斑马鱼毒性中等;25%甲霜.霜霉威可湿性粉剂3、00 g/L双酰草胺乳油和35%吡.异可湿性粉剂对斑马鱼低毒。该研究为药剂的安全合理使用提供了科学依据。

Acute Toxicity of Different Kinds of Pesticides to Brachydanio rerio and Their Safety Evaluation

[Objective]The aim was to detect the toxicity of different kinds of pesticides to Brachydanio rerio.[Method]With the B.rerio as tested material,the acute toxicity of 10 different kinds of pesticides to B.rerio were detected in the laboratory by the semi-static method and their safety evaluation was made.[Result]The toxicity of different kinds of pesticides to B.rerio was different.But the LC50 value of the tested pesticides was all decreased and the toxicity were all increased with the prolonging of the time.[Conclusion] According to the LC50 value for 96 h,25% fipronil SC and 8% quizalofop-P-ethyl micro-emulsion had high toxicity to B.rerio;10% pyrazolechlor EC,5% hexaconazole SC,40% acetochlor WP,30% iprobenfos WP and 65% buprofezin WP had moderate toxicity to B.rerio; 25% propamocarb WP,300 g/L carbetamide EC and 35% pyrylium · isopropyl WP had low toxicity to B.rerio The research provided the scientific basis for the safety and rational use of the pesticides.