Occurrence,distribution,and risk assessment of antibiotics in typical aquaculture environment of Southern Jiangsu,China
简介：Southern Jiangsu is a rapidly developing region for aquaculture in China,where antibiotics are commonly used to support growth and health in farmed species.This study investigates the distribution and ecological risks of 23 antibiotics across different aquaculture stages-early(Stage 1),middle(Stage 2),and late(Stage 3).Water and sediment samples were collected from aquaculture sites in Yixing and Suzhou to provide a multidimensional analysis of antibiotic usage patterns.To date,there remains a limited understanding of how antibiotics are dis-tributed among different aquaculture species and across various stages of production.The findings revealed that the total concentration of antibiotics in water ranged from 2.90 to 12,620.85 ng/L,while in sediments it ranged from 3.60 to 176.81 ng/g.Erythromycin(ERY)and Enrofloxacin(ENR)were the dominant antibiotics in water and sediment,respectively.The concentration of antibiotics in water peaked during the Stage 2,while the high-est concentrations in sediments were observed at the Stage 3.From the perspective of aquaculture species,the average antibiotic concentrations in water were 174.85 ng/L for crab,187.98 ng/L for shrimp,and 224.19 ng/L for fish.During Stage 2,elevated concentrations of ERY were detected in Yixing,resulting in significantly higher antibiotic levels in water samples compared to those from Suzhou.In contrast,antibiotic concentrations in sedi-ment samples were relatively consistent between the two regions.Risk assessment indicated that aquaculture in Southern Jiangsu faces both single-antibiotic and antibiotic mixture-related risks.This study provides a scientific basis for improving aquaculture management and policy.展开
学者：ZhenKuangWenfengZhengWeilongSongPinZHAOXinhuaWang
关键词：antibioticsSouthern JiangsuaquacultureErythromycinecological risk
在线出版日期：2026-05-11 （网站首发日期）
