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Toxicity of Some Pesticides to Brachydanio rerio and safety valuation

Zhao Yuding,Wang Donglan,Lai YouPeng,Liu Xianjin(Food Safety and Service Center,Jiangsu Academy of Agricultural Sciences,Nanjing,210014,China) Lai Youpeng(Department of Entomology,Nanjing Agricultural University,Nanjing,210095,China)  
The toxicity of some pesticides to Brachydanio rerio was investigated using standardized laboratory procedure;the grade was compartmentalized according to the toxicity scope and the safety evaluation was made for these pesticides.The results indicated that the LC50(96h)of 1 pesticide was lower than 0.1mg/L(belong to extremely high toxicity grade);6 pesticides were between 0.1~1.0mg/L(belong to high toxicity grade),8 pesticide were between 0.1~1.0mg/L(belong to moderate toxicity grade),6 pesticides were higher than 10 mg/L(belong to slight toxicity grade).
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