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KMID : 1024519960050020179
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Journal of the Environmental Sciences
1996 Volume.5 No. 2 p.179 ~ p.185
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The Effect of Environmental Factor on the Survival of Marine Vibrio vulnificus
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Lee Bong-Hun
Park Heung-Jai
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Abstract
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This study was conducted to investigate the effects of environmental factors such as temperature, salinity, pH, and UV light on-the survival of life-threatening Vibrio vulnificus. In the temperature range of 15 to , the numbers of V. vulnificus incieased during the 6-day incubation, but outside this range, the survival of V. vulnificus was poor. Incubation between 1 and showed that V. vulnifcts survived poorly below . At sal:nities between 5 and 25ppt, the numbers of V. vulnificus increased or remained unchanged for 6-day. At salinities above this range, the numbers of V. vulnificus decreased. The optimal pH range was 6.5 to 8.0 and outside this range, the survival ratio of V. vulnificus was small. At 15-and , UV radiation was bactericidal for cultures of V, vulnificus. The counts of V. vulnificus were reduced approximately 10, 000-fold after 2h of UV light treatment at both temperatures. Above results mowed 1ha’t environmental factors were effective on the survival of V. vulniucus in the environment.
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KEYWORD
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environmental factor, temperature, salinity, pH, UV light
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