Toxicity of the new pyrethroid insecticide,deltamethrin, to Daphnia magna |
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Authors: | Xiu Ruiquin Xu Yongxiang Gao Shirong |
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Affiliation: | (1) Chinese Academy of Preventive Medicine, Institute of Environmental Health and Engineering, 29 Nan Wei Road, Beijing, China |
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Abstract: | The toxicity of deltamethrin, a synthetic pyrethroid insecticide, was determined under standardized conditions (ISO, 1982) in neonates and juveniles of Daphnia magna. Neonates (6 to 24 h old) were more sensitive than juveniles (48 to 72 h old). The 24- and 48-h EC50s (immobilization) in neonates were 0.113 and 0.031 µg l–1, respectively. The toxicity of deltamethrin was highly toxic. The 96-h EC50 was in the ppt (µg l–1) range. Toxicity tests with Daphnia may be used to detect toxic residues in water and sediment in areas treated with deltamethrin and other highly toxic pyrethroid pesticides. |
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Keywords: | deltamethrin Daphnia magna pesticide toxicity |
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