Different antibiotic profiles in wild and farmed Chilean salmonids. Which is the main source for antibiotic in fish?

CARRIZO, JUAN CRUZ; GRIBOFF, JULIETA; BONANSEA, ROCÍO INÉS; NIMPTSCH, JORGE; VALDÉS, MARÍA EUGENIA; WUNDERLIN, DANIEL ALBERTO; AMÉ, MARÍA VALERIA

THE SCIENCE OF TOTAL ENVIRONMENT

Elsevier

Año: 2021

0048-9697

ish from both aquaculture and wild capture are exposed to veterinary and medicinal antibiotics (ABs). This study explored the occurrence and probable source of 46 antibiotic residues in muscle of farmed salmon and wild trout from Chile. Results showed that at least one AB was detected in all studied samples. Diverse patterns were observed between farmed and wild specimens, with higher ABs concentrations in wild fish. Considering antimicrobial resistance, detected ABs corresponded to the categories B (Restrict), C (Caution) and D (Prudence) established by Antimicrobial Advice Ad Hoc Expert Group (European Medicines Agency). Multivariate statistic was used to verify differences between farmed and wild populations, looking for the probable source of ABs as well. Principal components analysis (PCA) revealed that ciprofloxacin, moxifloxacin, enrofloxacin, amoxicillin, penicillin G, oxolinic acid, sulfamethoxazole, trimethoprim and clarithromycin were associated with wild samples, collected