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| Joint Toxicity of Glyphosate and As(Ⅲ) to Daphnia magna in Aquatic Environment |
| Received:June 25, 2015 |
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| KeyWord:glyphosate;As(Ⅲ);joint toxicity;Daphnia magna;model |
| Author Name | Affiliation | E-mail | | XU Yang-gui | Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou 510642, China
Ministry of Agriculture Key Laboratory of Agro-Environment in the Tropics, South China Agricultural University, Guangzhou 510642, China
Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China | | | LI Jing | Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou 510642, China
Ministry of Agriculture Key Laboratory of Agro-Environment in the Tropics, South China Agricultural University, Guangzhou 510642, China
Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China | | | QIN Jun-hao | Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou 510642, China
Ministry of Agriculture Key Laboratory of Agro-Environment in the Tropics, South China Agricultural University, Guangzhou 510642, China
Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China | | | LI Qi | Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou 510642, China
Ministry of Agriculture Key Laboratory of Agro-Environment in the Tropics, South China Agricultural University, Guangzhou 510642, China
Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China | | | LI Hua-shou | Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou 510642, China
Ministry of Agriculture Key Laboratory of Agro-Environment in the Tropics, South China Agricultural University, Guangzhou 510642, China
Key Laboratory of Agroecology and Rural Environment of Guangdong Regular Higher Education Institutions, South China Agricultural University, Guangzhou 510642, China | lihuashou@scau.edu.cn |
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| Abstract: |
| Here the single and joint toxicity of glyphosate and As(Ⅲ) to Daphnia magna was investigated by using acute toxicity test. The 24 h-LC50 and 48 h-LC50 values were 54.12 and 51.12 mg·L-1 for glyphosate and 7.47 and 6.07 mg·L-1 for As(Ⅲ), respectively. Logistic regression model and response surface model were suitable to predict the single effect and the joint toxicity effect of two chemicals at equivalent toxic concentration ratios, respectively. Two response surface models, namely Loewe Parametric Response Surface(CARS) model and Response Additive Response Surface(RARS) model, were employed to estimate the joint toxicity of two chemicals, and the result showed that the interaction of these two chemicals was antagonistic. |
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