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Spatiotemporal variations and source tracking of antibiotics in an ecological aquaculture farm in Southern China

文献类型： 外文期刊

作者： Su, Haochang 1 ; Xu, Wujie 1 ; Hu, Xiaojuan 1 ; Xu, Yu 1 ; Wen, Guoliang 1 ; Cao, Yucheng 1 ;

作者机构： 1.Minist Agr & Rural Affairs, Key Lab South China Sea Fishery Resources Exploit, Guangzhou 510300, Peoples R China

2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Peoples R China

3.Guangdong Prov Key Lab Fishery Ecol & Environm, Guangzhou, Peoples R China

4.Chinese Acad Fishery Sci, Shenzhen Base South China Sea Fisheries Res Inst, Shenzhen 518121, Peoples R China

关键词： Antibiotics; Spatiotemporal variations; Source tracking; Aquaculture; Shrimp

期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：7.963； 五年影响因子：7.842 ）

ISSN： 0048-9697

年卷期： 2021 年 763 卷

页码：

收录情况： SCI

摘要： Although the occurrence and distribution of antibiotics in aquatic environments and reared organisms have been widely reported, the spatiotemporal variations and sources of antibiotics throughout the rearing period of aquaculture remain unclear. In this study, the concentrations and spatiotemporal variations of antibiotics in water sources, pond water, sediment, feed, and reared shrimp samples during three rearing periods in an ecological shrimp farm in Southern China were investigated. The water, sediment, and feed samples were found to contain twelve, nine, and four types of antibiotics, respectively, and the concentration of erythromycin-H2O was the highest among these antibiotics. No target antibiotics were detected in the reared shrimp samples from this typical shrimp farm, which employed ecological rearing with no anlibiolic use throughout the rearing processes. The total concentrations of antibiotics in water source were 1.96-40.58 Limes higher than those in pond water. A significant decrease in the total antibiotic concentrations of the pond water was observed, while a significant increase was observed in secliment during each rearing period (p < 0.05), suggesting that antibiotics transferred from the water phase to the sediment phase in the farm. Redundancy analysis demonstrated that the chemical oxygen demand was negatively correlated with the concentration of the target antibiotics in the water samples during three rearing periods (p < 0.05). The results of calculations conducted using the concentrations of antibiotics water source, pond water, sediment, and feed samples detected in this study indicated that the water source was likely to be the main source of antibiotics in the rearing ponds. This study can provide a better understanding of the spatiotemporal variations and sources of antibiotics in aquaculture. (C) 2020 Elsevier B.V. All rights reserved.

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