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Risk assessment of chlorantraniliprole pesticide use in rice-crab coculture systems in the basin of the lower reaches of the Yangtze River in China

文献类型： 外文期刊

作者： Song, Chao 1 ; Zhang, Jingwei 2 ; Hu, Gengdong 2 ; Meng, Shunlong 2 ; Fan, Liming 2 ; Zheng, Yao 2 ; Chen, Jiazhang 2 ; Z 1 ;

作者机构： 1.Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China

2.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi 214081, Jiangsu, Peoples R China

3.Minist Agr & Rural Affairs, Key Lab Control Qual & Safety Aquat Prod, Beijing 100000, Peoples R China

4.Minist Agr & Rural Affairs, Lab Qual & Safety Risk Assessment Aquat Prod Envi, Wuxi 214081, Jiangsu, Peoples R China

关键词： Chlorantraniliprole; Rice-crab coculture; Fate; Survival; Dietary risk

期刊名称：CHEMOSPHERE （ 影响因子：7.086； 五年影响因子：6.956 ）

ISSN： 0045-6535

年卷期： 2019 年 230 卷

页码：

收录情况： SCI

摘要： Rice-crab (Chinese mitten crab, Eriocheir sinensis) coculture system has become one of the most important agricultural activities practiced in China. However, the effect of pesticide usage on the survival and edible safety of crab species living in the coculture system has not been investigated. In the present study, we created a field simulation experiment and discovered that the amount of pesticide chlorantraniliprole (CAP) entering the rice-crab coculture system accounted for 82.22% of the total CAP content present in the spray barrel. When CAP residues found in the soil leached into nearby areas, we observed an increase in the CAP concentration in the water and sediment. Specifically, peak CAP concentration (135 mu g/L) was detected in water within 1 day, and a steady CAP concentration in the sediment (2.55 mu g/kg) was detected within 3 days. Additionally, an extensive field sampling experiment conducted in the basin of the lower reaches of the Yangtze River revealed that CAP was routinely used in rice-crab coculture systems. Although detected CAP concentrations were below 1 mu g/L in ditch water and below 1 mu g/kg in ditch sediment, there was still a potential risk associated with the crab growth. Importantly, there was no risk associated with crab consumption, given the low detection frequency of CAP in the collected samples. Our analysis suggests that an increase in usage ratio and a decrease in the total CAP content will likely promote safe application of CAP in the rice-crab coculture systems. (C) 2019 Elsevier Ltd. All rights reserved.

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