Predominant intestinal bacteria of the tilapia
Oreochromis mossambicus were investigated by the agar plate method and clone library method. Total direct counts and total viable counts in the intestinal samples of four specimens ranged from 9.8×10
8 to 1.4×10
9 cells/g and from 1.3×10
7 to 1.8×10
8 CFU/g, respectively, which indicated 1.21-18.6% culturability. Only
Cetobacterium somerae was detected as a predominant species in both the agar plate and clone library methods. These results suggest that there is a great difference in the intestinal bacterial communities of freshwater fish detected by culture-dependent and -independent methods.
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