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The bacteriological quality of crabs from three different mangroves (Itaóca, Suruí, and Piedade) from Rio de Janeiro state, Brazil, was investigated using conventional and molecular methods. The results revealed high counts for total coliforms in meat and hepatopancreas samples. PCR analyses identified 25  Escherichia coli  colonies in the Itaóca, Piedade, and Suruí samples, detecting 13 enterotoxigenic colonies and 9 enteroaggregative colonies. Respectively, 12, 11, and 21  Vibrio parahaemolyticus  strains were detected in the Itaóca, Piedade, and Suruí samples. Two  V. cholerae  strains were detected in the Piedade samples. The  E. coli  strains isolated in the present study showed resistance to gentamicin.  E. coli  strains from the Piedade samples showed 33% resistance to chloramphenicol and the strains also showed multiresistance to several antimicrobial agents with a MAR index ranging from 0.12 to 0.31.  Vibrio  strains from Piedade, Itaóca, and Suruí showed 86%, 78%, and 85% resistance, respectively, to ampicillin. The isolated  Vibrio  strains showed multiresistance to several antimicrobial agents, with a MAR index ranging from 0.12 to 0.25. The presence of these organisms in crab meat is an indication of microbial contamination, which may pose health risks to consumers when improperly cooked.

international journal of microbiology

Microbiological Quality Assessment by PCR and Its Antibiotic Susceptibility in Mangrove Crabs (<i>Ucides cordatus</i>) from Guanabara Bay, Rio de Janeiro, Brazil

Microbiological Quality Assessment by PCR and Its Antibiotic Susceptibility in Mangrove Crabs (Ucides cordatus) from Guanabara Bay, Rio de Janeiro, Brazil