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s 107 strains of bacteria was isolated from crop,stomach and intestine of the Bullacta exarata and 85% of them were Gram_negative rod. The microflora of digestive tract was composed of eleven genera. The predominant genera were composed of Photobacterium , Vibrio , Bacillus, and Pseudomonas. The results indicate that predominant microflora was relatively steady in digestive tract of Bullacta exarata growth period. There were a great variety of bacteria in crop. The digestive tract may play a special role for regulating and controlling the microbial community.
s 107 strains of bacteria was isolated from crop, stomach and intestine of the Bullacta exarata and 85% of them were Gram_negative rod. The microflora of digestive tract was composed of eleven genera. The predominant genera were composed of Photobacterium, Vibrio, Bacillus, and The results that that predominant microflora was relatively steady in digestive tract of Bullacta exarata growth period. There were a great variety of bacteria in crop. The digestive tract may play a special role for regulating and controlling the microbial community.