Precipitation influences pathogenic bacteria and antibiotic resistance gene abundance in storm drain outfalls in coastal sub-tropical waters

Environment International
Warish AhmedSatoshi Ishii

Abstract

Stormwater contamination can threaten the health of aquatic ecosystems and human exposed to runoff via nutrient and pathogen influxes. In this study, the concentrations of 11 bacterial pathogens and 47 antibiotic resistance genes (ARGs) were determined by using high-throughput microfluidic qPCR (MFQPCR) in several storm drain outfalls (SDOs) during dry and wet weather in Tampa Bay, Florida, USA. Data generated in this study were also compared with the levels of fecal indicator bacteria (FIB) and sewage-associated molecular markers (i.e., Bacteroides HF183 and crAssphage markers) in same SDOs collected in a recent study (Ahmed et al., 2018). Concentration of FIB, sewage-associated markers, bacterial pathogens and many ARGs in water samples were relatively high and SDOs may be potentially hotspots for microbial contamination in Tampa Bay. Mean concentrations of culturable E. coli and Enterococcus spp. were tenfold higher in wet compared to dry weather. The majority of microbiological contaminants followed this trend. E. coli eaeA, encoding the virulence factor intimin, was correlated with levels of 20 ARGs, and was more frequently detected in wet weather than dry weather samples. The blaKPC gene associated with carbapenem resista...Continue Reading

Citations

Oct 8, 2019·Journal of Environmental Quality·Irene BuenoRandall S Singer
Oct 3, 2018·Journal of Environmental Quality·Haoming FangKarina Yew-Hoong Gin
Dec 18, 2019·Urban Ecosystems·Fushcia-Ann Hoover, Matthew E Hopton
Mar 22, 2020·Applied and Environmental Microbiology·Dewa A P Rasmika DewiTorsten Thomas
Jan 6, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Hassan WaseemMuhammad Ishtiaq Ali
Feb 12, 2021·Environmental Science & Technology·Prakit SaingamTao Yan
Jun 15, 2019·The Science of the Total Environment·Jacob K SenkbeilValerie J Harwood
Dec 7, 2021·Water Environment Research : a Research Publication of the Water Environment Federation·Erika OlsonJack Norland

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