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A two-species test using a water–sediment test system was performed to investigate chronic effects of the parasiticide ivermectin on Daphnia magna and Chironomus riparius. To simulate exposure by direct excretion of cattle into surface waters, ivermectin was applied via spiked cattle dung. The parasiticide was applied once, at concentrations ranging from 11 to 1314μgkg −1 dung dry weight....
Although widely used for the treatment of endo- and ectoparasites in livestock and pets, very few data on chronic effects on aquatic organisms are available for the parasiticide ivermectin. In the present study, toxicity of ivermectin to two freshwater organisms, the cladoceran Daphnia magna and the green alga Pseudokirchneriella subcapitata was investigated. For D. magna, a mean LC 50 48h...
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