Acute toxicity and ecotoxicological risk assessment of rice pesticides to Lithobates catesbeianus tadpoles

作者：Franca Fernanda Menezes^*; Brazil De Paiva Teresa C; Marcantonio Adriana S; Teixeira Patricia C; Ferreira Claudia Maris

来源：Journal of Environmental Science and Health - Part B: Pesticides, Food Contaminants, and Agricultural Wastes , 2015, 50(6): 406-410.

DOI：10.1080/03601234.2015.1011950

• CL50
• penoxsulam
• vegetable oil
• amphibian
• carbofuran
• permethrin
• bullfrog
• ecotoxicology
• mixture toxicity
• bentazon

The objective of this study was to determine the acute toxicity of some pesticides used in irrigated rice farming to Lithobates catesbeianus tadpoles. The LC50-96h for commercial formulations containing bentazon, penoxsulam, vegetable oil, permethrin and carbofuran, separately and their mixtures, were determined at the proportions commonly used in the field. The limits of risk concentrations of these products for the studied species were also established. The LC50-96h for tadpoles was 4,530mg L-1 for bentazon; 7.52mg L-1 for penoxsulam + 145.66mg L-1 of vegetable oil; 81.57mg L-1 for vegetable oil; 0.10mg L-1 for permethrin; 29.90mg L-1 for carbofuran (active ingredients), and 38.79times the dose used in the field for the mixture of these products. The environmental risk was determined only for permethrin, and care should be taken when using the vegetable oil.

• 出版日期2015-6-3