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The Acute and Chronic Toxicity Studies of Herbicide, Molinate to Waterfleas  

Shin, On-Sup (Department of Crop Life Safety, National Institute of Agricultural Science and Technology)
Kim, Byung-Seok (Department of Crop Life Safety, National Institute of Agricultural Science and Technology)
Park, Yeon-Ki (Department of Crop Life Safety, National Institute of Agricultural Science and Technology)
Park, Kyung-Hoon (Department of Crop Life Safety, National Institute of Agricultural Science and Technology)
Lee, Je-Bong (Department of Crop Life Safety, National Institute of Agricultural Science and Technology)
Kyung, Kee-Sung (College of Agriculture, Life and Environmental Sciences, Chungbuk National University)
Ahn, Young-Joon (School of Agricultural Biotechnology, Seoul National University)
Publication Information
The Korean Journal of Pesticide Science / v.12, no.3, 2008 , pp. 215-221 More about this Journal
Abstract
To assess the impact of molinate on freshwater aquatic organisms, acute and chronic toxicity studies for waterfleas were conducted. In acute toxicity studies for Daphnia magna, and Moina macrocopa, the 48-h $EC_{50}$ values were 11.4 and 8.3 mg/L respectively. And in reproduction toxicity studies for the same species, the NOEC's were 2.5 and 2.0 mg/L respectively. These results suggest that waterfleas have simillar sensitivity to molinate. On the other hand, the NOEC for 3-generation toxicity of moina macrocopa 0.16 mg/L, was much lower than those of acute values. This studies concludes that molinate has minimal risk to waterfleas in river.
Keywords
molinate; acute toxicity; reproduction toxicity;
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