Skip to Main content Skip to Navigation
Journal articles

Antimicrobial Susceptibility Profiles and Resistance Genes in Genus Aeromonas spp. Isolated from the Environment and Rainbow Trout of Two Fish Farms in France

Abstract : This study presents the occurrence and abundance of Aeromonas antibiotic-resistant bacteria (ARB) and genes (ARGs) isolated from water, biofilm and fish in two commercial trout farms before and one week after flumequine treatment. Wild (WT) and non-wild (NWT) strains were determined for quinolones (flumequine, oxolinic acid and enrofloxacin), oxytetracycline (OXY), florfenicol (FFN), trimethoprim-sulfamethoxazole (TMP) and colistin (COL), and pMAR (presumptive multi-resistant) strains were classified. Forty-four ARGs for the mentioned antibiotics, β-lactams and multi-resistance were quantified for 211 isolates. BlaSHV-01, mexF and tetE were the dominant ARGs. A greater occurrence and abundance of tetA2, sul3, floR1, blaSHV-01 and mexF were observed for NWT compared to WT. The occurrence of pMAR and NWT Aeromonas for quinolones, OXY, FFN, TMP, COL and ARGs depended on the Aeromonas origin, antibiotic use and the presence of upstream activities. Our results revealed the impact of a flumequine treatment on Aeromonas present on a fish farm through an increase in NWT and pMAR strains. The link between fish and their environment was shown by the detection of identical ARB and ARGs in the two types of samples. There appears to be a high risk of resistance genes developing and spreading in aquatic environments.
Document type :
Journal articles
Complete list of metadata

https://hal.inrae.fr/hal-03254269
Contributor : Michel Leroux <>
Submitted on : Tuesday, June 8, 2021 - 4:43:13 PM
Last modification on : Tuesday, June 8, 2021 - 4:43:15 PM

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Links full text

Identifiers

Collections

Citation

Niki Hayatgheib, Ségolène Calvez, Catherine Fournel, Lionel Pineau, Hervé Pouliquen, et al.. Antimicrobial Susceptibility Profiles and Resistance Genes in Genus Aeromonas spp. Isolated from the Environment and Rainbow Trout of Two Fish Farms in France. Microorganisms, MDPI, 2021, 9 (6), pp.1201. ⟨10.3390/microorganisms9061201⟩. ⟨hal-03254269⟩

Share

Metrics

Record views

8