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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.
- Source :
-
Chemosphere [Chemosphere] 2019 Sep; Vol. 230, pp. 440-448. Date of Electronic Publication: 2019 May 16. - Publication Year :
- 2019
-
Abstract
- 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 (1.35 μg/L) was detected in water within 1 day, and a steady CAP concentration in the sediment (2.55 μg/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 μg/L in ditch water and below 1 μg/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.<br /> (Copyright © 2019 Elsevier Ltd. All rights reserved.)
- Subjects :
- Animals
Brachyura growth & development
China
Food Contamination analysis
Oryza growth & development
Pesticides analysis
Risk Assessment
Seafood analysis
Water Pollutants, Chemical analysis
ortho-Aminobenzoates analysis
Agriculture methods
Brachyura drug effects
Oryza drug effects
Pesticides toxicity
Rivers chemistry
Water Pollutants, Chemical toxicity
ortho-Aminobenzoates toxicity
Subjects
Details
- Language :
- English
- ISSN :
- 1879-1298
- Volume :
- 230
- Database :
- MEDLINE
- Journal :
- Chemosphere
- Publication Type :
- Academic Journal
- Accession number :
- 31121508
- Full Text :
- https://doi.org/10.1016/j.chemosphere.2019.05.097