The acute toxicity of dipterex and ivermectin on Cyclops vicinus
Xing Yuenan
Wang Shiyue
Abstract：The survival rate of fish larvae was heavily influenced by the copepoda in hatching water. The acute toxicity of dipterex and ivermectin on Cyclops vicinus which is one of the most common copepoda species in fresh water were studied at the temperature of 20 ℃ in illumination in-cubator. According to the trial test the concentration gradient of dipterex and ivermectin were built by 0.3,0.6,1.2、,2.4,4.8 mg/L and 0.01,0.04,0.16,0.64,2.56 ug/L. 3 repetitions were set in each concentration group and 10 Cyclops vicinus were arranged in each repetition. The results showed that the LC50 for 24 h and 48 h of dipterex were 1.862 mg/L and 1.183 mg/L. The LC50 for 24 h and 48 h of ivermectin were 0.404 μg/L and 0.164 4 μg/L. The toxicity of ivermectin was much more greater than that of dipterex to Cyclops vicinus. The safety concentration of dipterex and ivermectin were 0.143 2 mg/L and 0.008 16 μg/L which provide important data for the biological monitoring in the environmental pollution by pesticide.
Keywords：TrichlorfonIvermectinCyclops neighborsAcute toxicitySafe concentration
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 41-43 )