Abstract
The study was conducted to evaluate the influence of salinity on the growth of Vibrio spp. in vitro condition. Two hundred and forty-three Vibrio strains were isolated from 108 samples of sludge and water of My Thanh River, Soc Trang province. The isolates were characterized and identified by API 20E and 16S-rRNA sequences, resulting in three strains of Vibrio cholerae, three strains of Vibrio parahaemolyticus, and three strains of Vibrio campbellii. Growth of these strains was tested at different salinity (5, 10, 15, 20, 25, 30, 35, 40 and 45‰). The bacterial density in the test was quantified by colonies counting on agar plates method. The results show that bacterial densities were lowest at salinity 5‰ in all strains, significantly different from the other treatments (P
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