DGGE fingerprinting of bacterial community in aquaculture water of Crassostrea ariakensis from Guandu district, Zhanjiang city

We had monitored and investigated the bacterial community composition in aquaculture water for Crassostrea ariakensis in Guandu of Zhanjiang by denaturing gradient gel electrophoresis (DGGE) from March to December,2011. UPCMAclustering analysis shows that there are 2 major populationsofbacterialspecies. Diversity index reveals that the diversities inMarch~Julywere higher than thoseinAugust~December. Phylogenetic analysis indicates that the dominant microbial populations in the water are uncultured Proteobacteria ( , , and ), uncultured Bacterioidetes, uncultured Verrucomicrobiae bacterium, uncultured Actinobacteria and uncultured Cyanobacter bacterium. Uncultured -proteobacterium and Flevobacterium of uncultured Bacteroidetes are the most dominant bacteria.c