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Toxicity Test of Carbosulfan and Phenthoate on Killifish  

Bae, Chul-Han (Agricultural Research Center, Hankooksamgong Co., Ltd.)
Lee, Jeong-Seok (Agricultural Research Center, Hankooksamgong Co., Ltd.)
Cho, Kyung-Won (Agricultural Research Center, Hankooksamgong Co., Ltd.)
Park, Hyun-Ju (Agricultural Research Center, Hankooksamgong Co., Ltd.)
Cho, Dong-Hun (Agricultural Research Center, Hankooksamgong Co., Ltd.)
Shin, Kwan-Seop (Agricultural Research Center, Hankooksamgong Co., Ltd.)
Jung, Chang-Kook (Agricultural Research Center, Hankooksamgong Co., Ltd.)
Park, Yeon-Ki (Pesticide Safety Division, National Institute of Agricultural Science and Technology)
Publication Information
The Korean Journal of Pesticide Science / v.8, no.4, 2004 , pp. 309-318 More about this Journal
Abstract
Acute toxicity test and chronic toxicity test were conducted with killifish (Oryzias latipes, Medaka) to evaluate toxicity effect of pesticides. Acute toxicity test was investigated mortality in 48 hours and 96 hours after treatment, chronic toxicity test was examined with the early life stage of 30 days after hatching be started embryos of Medaka. The test substances were two pesticides, Carbosulfan and Phenthoate, applied to the paddy rice plant and well-known to the high fish toxicity. As the result of acute toxicity test, median concentration $(LC_{50})$ at 96 hours in Medata was Carbosulfan 0.102 mg/L and Phenthoate 0.167 mg/L, and Fish early life stage toxicity test was conducted on basis of the result of acute toxicity test and concluded from the investigation of hatching success, period of hatching, survival post hatching, length and weight of surviving fishes and abnormal fish. The results of early life stage toxicity test were represented by no observed effect concentration (NOEC), lowest observed effect concentration (LOEC) and maximum acceptable toxicant concentration (MATC). NOEC was Carbosulfan 0.0067ppm and Phenthoate 0.011ppm, LOEC of PCP-Na, Carbosulfan and Phenthoate were 0.017ppm and 0.029ppm, MATC of Carbosulfan and Phenthoate were 0.011ppm and 0.018ppm. These studies will be expected to supply more varied chronic toxicity effects at lower concentration than acute toxicity test. Therefore, evaluation data will be more realistic and the risk assessment of pesticide will be leveled up.
Keywords
Oryzias latipes; Acute Toxicity Test; Early-life Stage Toxicity Test; Carbosulfan; Phenthoate;
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