Acute Toxicity of Fluazifop-P-Butyl (Herbicide) on Daphnia magna (Straus, 1820)

In this research, fluazifop-p-butyl (herbicide) acute toxic effects on Daphnia magna (Straus, 1820) (Cladocera,\ud Crustacea) widely used in agricultural areas inside of Çukurova Region was researched by bioassay method for\ud to be informed about the possible negative effects that may be caused in the aquatic environment. In this study,\ud methods of bioassay test which called static method has been applied. The study was carried out under\ud laboratory conditions at 20±2 oC. The results has been estimated with the dose-response data were fitted a loglogistic\ud model. The 24-h and 48-h acute LC50 values were calculated. According to the results, acute toxic\ud effects researched fluazifop-p-butyl the LC50 acute toxic lethal concentration values for D. magna were\ud calculated (95% confidence limits 7.46–9.52 mgl-1\ud ) 24-h LC50 8.78 mgl-1 and (95% confidence limits 4.32–4.95\ud mgl-1\ud ) 48-h LC50 4.63 mgl-1\ud