Antibiotic-resistant vibrios in farmed shrimp.
Antimicrobial susceptibility pattern was determined in 100 strains of Vibrio isolated from the Litopenaeus vannamei shrimp and identified phenotypically. A high antibiotic-resistance index (75%) was observed, with the following phenotypic profiles: monoresistance (n = 42), cross-resistance to β-lactams (n = 20) and multiple resistance (n = 13). Plasmid resistance was characterized for penicillin (n = 11), penicillin + ampicillin (n = 1), penicillin + aztreonam (n = 1), and ampicillin (n = 1). Resistance to antimicrobial drugs by the other strains (n = 86) was possibly mediated by chromosomal genes. The findings of this study support the conclusion that the cultured shrimps can be vehicles of vibrios resistant to β-lactam and tetracycline.
Sea Science Institute, Federal University of Ceará, Avenida Abolição 3207, 60165-081 Fortaleza, CE, Brazil ; Fisheries Engineering Department, Federal University of Ceará, 60440-900 Fortaleza, CE, Brazil.
Renata
R
Albuquerque Costa
Sea Science Institute, Federal University of Ceará, Avenida Abolição 3207, 60165-081 Fortaleza, CE, Brazil ; Fisheries Engineering Department, Federal University of Ceará, 60440-900 Fortaleza, CE, Brazil.
Rayza Lima
RL
Araújo
Sea Science Institute, Federal University of Ceará, Avenida Abolição 3207, 60165-081 Fortaleza, CE, Brazil ; Fisheries Engineering Department, Federal University of Ceará, 60440-900 Fortaleza, CE, Brazil.
Oscarina Viana
OV
Souza
Sea Science Institute, Federal University of Ceará, Avenida Abolição 3207, 60165-081 Fortaleza, CE, Brazil ; Fisheries Engineering Department, Federal University of Ceará, 60440-900 Fortaleza, CE, Brazil.
Regine Helena Silva dos Fernandes
RH
Vieira
D000818:Animals; D000900:Anti-Bacterial Agents; D003445:Crustacea / Q000235:genetics / Q000382:microbiology; D004352:Drug Resistance, Microbial / Q000235:genetics*; D007769:Lactams / Q000494:pharmacology; D013752:Tetracycline / Q000494:pharmacology; D014733:Vibrio / Q000187:drug effects / Q000235:genetics* / Q000472:pathogenicity
D000900:Anti-Bacterial Agents; D007769:Lactams; D013752:Tetracycline