Study of bacterial communities in mussel Mytilus galloprovincialis by a combination of 16S crDNA and 16S rDNA sequencing

In this study has been analyzed the genetic potential (rDNA) versus expression (crDNA) of microbial populations associated to gills of living mussel Mytilus galloprovincialis (Bivalvia: Mytilidae) in natural environment. Data obtained (16S rDNA/crDNA clones libraries) showed as sequences mainly related to Bacteroides/Chlorobi, Firmicutes and Gamma-Proteobacteria groups are specific in live mussels. It is presumed that further studies of microbial population structure with culture-independent methods will demonstrate the active interactions (symbiosis) between filter-feeding organisms and gill-associated bacteria.