Microbiological evaluation is one of the most important parameters for analyzing the viability of an oyster farming system, which addresses public health and ecological concerns. Here, the microbiological quality of the oyster @entity69038 rhizophorae cultivated in a monitored environment and from natural beds in Bahia, northeastern Brazil, was determined. Bacterial diversity in oysters was measured by polymerase chain reaction-denaturing gradient gel electrophoresis. Sequence analysis revealed that most bacterial species showed similarity with @entity7696 or @entity7696 from environmental samples, and were clustered into the phylum Proteobacteria. Diverse bacteria from cultivated (monitored) oyster samples were grouped in the same cluster with a high similarity index (above 79%). Microbiological analyses revealed that these oysters did not contain pathogens. These results reflect the natural balance of the microbial communities essential to the maintenance of health and in inhibiting pathogen colonization in the oyster. On the other hand, bacterial diversity of samples from native stocks in extractive areas displayed a similarity index varying between 55 and 77%, and all samples were clustered separately from each other and from the cluster of samples derived from the cultivation area. Microbiological analyses showed that oysters from the extractive area were not fit for @entity1 consumption. This reflected a different composition of the microbial community in this area, probably resulting from anthropic impact. Our study also demonstrated that low temperatures and high rainfall limits the bacterial concentration in @entity69038 . This is the first study analyzing the total bacterial community profiles of the oyster C. rhizophorae.

Microbiological quality and bacterial diversity of the @entity69038 XXXX rhizophorae in a monitored farming system and from natural stocks.

@entity1 :: ('9606', 'Species') :: ['human'] @entity69038 :: ('167541', 'Species') :: ['Crassostrea', 'tropical oysters'] @entity7696 :: ('77133', 'Species') :: ['unidentified bacteria', 'uncultured']
@entity69038 :: (167541,Species) :: ['Crassostrea']
