Multiple antibiotic resistance (MAR) index box plot of Lactococcus spp. strains isolated from native Brazilian fish species. .

Multiple antibiotic resistance (MAR) index box plot of Lactococcus spp. strains isolated from native Brazilian fish species. .

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Lactococcus spp. has emerged as a pathogen that is affecting global aquaculture, with L. garvieae, L. petauri, and L. formosensis causing piscine lactococcosis. While antimicrobials are commonly used to treat diseases in aquaculture, reports of antimicrobial resistance in fish isolates are increasing. However, little is known about the susceptibili...

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Context 1
... addition, four isolates were classified as multidrugresistant. The MAR index of the isolates varied between 0.285 and 0.571 ( Figure 3, Supplementary Table 1). ...
Context 2
... study showed that the L. garvieae strains tend to be more sensitive to antimicrobials when compared to the L. formosensis and L. petauri strains. Furthermore, the proportion of L. garvieae isolates with a MAR index greater than 0.3 (11.7%) was lower than that found in L. formosensis (66.7%) and L. petauri (87.5%) (Figure 3). The most efficient measure to control bacterial diseases is the use of antimicrobials [11]. ...

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Article
Full-text available
Lactococcus spp. has emerged as a pathogen that is affecting global aquaculture, with L. garvieae, L. petauri, and L. formosensis causing piscine lactococcosis. While antimicrobials are commonly used to treat diseases in aquaculture, reports of antimicrobial resistance in fish isolates are increasing. However, little is known about the susceptibili...