Isolamento e identificação de bactérias potencialmente patogênicas a partir de bivalves no Arquipélago de Santana - Macaé, RJ

Abstract

Mussels are bivalve mollusks that developed a filtrating system enabling them to uptake nutrients from water. This is a not selective mechanism, so mussels microbiological analysis shows up the aquatic environment quality. Therefore, the present work aimed to isolate and identify bacterial microbiota from bivalve mollusks incrustated into the rocky coast of Arquipélago de Santana, Macaé, RJ. The antimicrobial resistance pattern of prevalent microorganisms isolated was also analyzed. The surrounding water microbiological quality was also evaluated in order to detect contamination source from fishing and subaquatic activities in the studied region. From the bacteriological analysis it was obtained a total of 51 isolates of Vibrio spp., being V. damsela (n=15) the prevalent specie, followed by V. harveyi (n=13) and V. alginolyticus (n=07). It was also obtained a total of 20 isolates of Enterobacteriaceae species, being Escherichia coli (n=06) the prevalent one, followed by Proteus vulgaris (n=04). Vibrio spp. isolates presented 100% of sensitivity to tested antimicrobials, except for ampicillin with no detected sensitivity corroborating to literature. For enterobacteria, it was detected a high percentile of sensitivity to all testes antimicrobials. In the six samples of ocean water analyzed it was not possible to detect total or fecal coliforms. The low percentile of isolated microorganisms from mussels at Arquipélago de Santana can be justified for its location at the open sea, far away from the coast and influenced by sea currents, in a environment not yet altered by human action.