Resistance profile of Staphylococcus aureus strains isolated from Acoupa weakfish (Cynoscion acoupa) commercialized in public fair

Abstract

The rural producer market of Macapa city (AP) plays an important economic, social and cultural role by commercializing resources that are the result of their agroextractivism, farming, and fishing. The Acoupa Weakfish (Cynoscion acoupa), is native to this region and a very important product for local businesses. A microbiological analysis was conducted over samples of the Acoupa Weakfish collected from the rural producer market of Macapa city, where the goal of this work was to determine the incidence and antibiotic resistance profile of the bacteria Staphylococcus aureus. Out of the 20 fish sampled, bacteria were detected in 15 fish (75% of the sample) with a mean concentration of 4x104 CFUs (± 1x105); of the 15 fish identified with the bacteria, only 7 fish (35%) specifically contained Staphylococcus sp at 1x103 CFU concentration, which is considered tolerable by the national regulatory agency. According to the assay performed to evaluate the antibiotic resistance profile, the strains analyzed were susceptible to ceftriaxone (13.33%), oxacillin (100%), clindamycin (13.33%), cotrimoxazole (100%) and vancomycin (13.33%); intermediate to ceftriaxone (93.33%), clindamycin (13.33%) and erythromycin (66.67%); and resistant to penicillin (100%), clindamycin (66.67%) and vancomycin (86.67%) and erythromycin (33,33%). The findings of this study indicate that the analyzed fish can be a source of Staphylococcus sp with different antibiotic resistance profiles, and a public health concern.