Antibiotics florfenicol and flumequine in the water column and sediments of Puyuhuapi Fjord, Chilean Patagonia

Chile is a major global producer of farmed salmon in the fjords of Patagonia, and therefore a major consumer of antibiotics. We tested whether the antibiotics florfenicol and flumequine persisted in the large Puyuhuapi Fjord after the six months following mandatory concerted treatment by all salmon...

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Vydáno v:	Chemosphere (Oxford) Ročník 275; s. 130029
Hlavní autoři:	Jara, Bibiana, Tucca, Felipe, Srain, Benjamín M., Méjanelle, Laurence, Aranda, Mario, Fernández, Camila, Pantoja-Gutiérrez, Silvio
Médium:	Journal Article
Jazyk:	angličtina
Vydáno:	England Elsevier Ltd 01.07.2021 Elsevier
Témata:	Animals Anti-Bacterial Agents antibiotic resistance antibiotic resistance genes antibiotics Argentina Biodiversity and Ecology Chile Environmental Sciences Estuaries florfenicol flumequine Fluoroquinolones Geologic Sediments human health Humans risk salmon Thiamphenicol - analogs & derivatives Water Chile Argentina
ISSN:	0045-6535, 1879-1298, 1879-1298
On-line přístup:	Získat plný text
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Shrnutí:	Chile is a major global producer of farmed salmon in the fjords of Patagonia, and therefore a major consumer of antibiotics. We tested whether the antibiotics florfenicol and flumequine persisted in the large Puyuhuapi Fjord after the six months following mandatory concerted treatment by all salmon farms present in the fjord. Antibiotics were detected in 26% of analyzed samples, but only within the particulate phase, with concentrations of florfenicol of up to 23.1 ng L−1, where detected. Flumequine was present in one sample at trace concentration, and neither antibiotic was detected in the dissolved phase nor in surface sediments. A fugacity-based model predicted that flumequine should theoretically remain in surface sediments at the sub-Minimal Inhibiting Concentrations (sub-MIC) previously shown to promote selection for antibiotic resistance in bacteria. Our observations suggest that surface sediments might act as a reservoir for antibiotic resistomes of bacteria, and that bacteria bearing antibiotic resistance genes could eventually become a risk for human health through the consumption of marine products. •Antibiotics were detected in 26% of analyzed samples in Puyuhuapi Fjord.•Maximum quantified concentration was 23 ng L−1.•A fugacity-based model predicted that flumequine remains in sediments at Sub-MIC.
Bibliografie:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0045-6535 1879-1298 1879-1298
DOI:	10.1016/j.chemosphere.2021.130029