Antibiotic Bioaccumulation in Zooplankton from the Yelang Lake Reservoir of Anshun City, Southwest China
Ni Yan 1,2
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School of Karst Science, Guizhou Normal University, State Engineering Technology Institute for Karst Desertfication Control., Guiyang 550000, Guizhou China
School of Life Science, Guizhou Normal University, Guiyang 550000, Guizhou China
College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
Guizhou Provincial Key Laboratory for Rare Animal and Economic Insects of the Mountainous Region, Guizhou Provincial Engineering Research Center for Biological Resources Protection and Efficent Utilization of the Mountainous Region, College of Biology and Environmental Engineering, Guiyang University, Guiyang 550005, Guizhou China
Submission date: 2021-08-26
Final revision date: 2021-10-28
Acceptance date: 2021-11-06
Online publication date: 2022-02-24
Publication date: 2022-04-06
Corresponding author
Kangning Xiong   

School of Karst Science,, Guizhou Normal University,, China
Pol. J. Environ. Stud. 2022;31(3):2367-2380
Antibiotic (Σsulfonamide, Σfluoroquinolone, Σtetracycline and Σmacrolide) contamination in aquatic systems has remained a global concern in recent years. In this study, fourteen antibiotics, sulfadiazine (SDZ), sulphapyridine (SPD), sulfacetamide (SCT), sulfamethoxazole (SMX), sulfamethazine (SMZ), trimethoprim (TMP), ofloxacin (OFX), lomefloxacin (LFX), ciprofloxacin (CFX), norfloxacin (NFX), oxytetracycline (OTC), tetracycline (TC), dehydroerythromycin (ETM-H2O) and roxithromycin (RTM), were analysed in zooplankton collected from the Yelang Lake Reservoir between May 2016 and Mar. 2017. Our results demonstrated that the antibiotic TC (mean 95.80 ng g-1), OTC (mean 167.0 ng g-1) and RTM (mean 151.80 ng g-1) concentrations were significantly higher in zooplankton than the other antibiotics. TC, OTC and RTM accumulated intensively in zooplankton, and the BAFs of OTC, RTM and TC were significantly higher, with mean BAF values of 78.43, 108.4 and 110.1, respectively. Antibiotic concentrations were strongly correlated with zooplankton phytoplankton biomass, OTC, RTM and SMX concentrations in zooplankton were significantly positively correlated with bacillariophyte biomass, and SDZ and SMZ concentrations in zooplankton were significantly positively correlated with T. brevifurcatus, T. mongolicus, and D. pulex biomass. SPD with P. tunguidus, C. cornuta, TMP, ETM and OFX with P. tunguidus, C. cornuta, M. leuckarti, C. vicinus vicinus, CFX with D. pulex, LFX with T. brevifurcatus, T. mongolicus, Bosmina longirostris, and D. dubium were significantly positively correlated. These results show that bioaccumulation or scavenging of antibiotics across trophic levels is a fundamental and complex component of antibiotic cycling in aquatic environments.
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