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KMID : 0382420030290020094
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Korean Journal of Environmental Health Society
2003 Volume.29 No. 2 p.94 ~ p.102
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Environmental and Antimicrobial Characteristics of Vibrio spp. Isolated from Fish, Shellfish, Seawater and Brackish water samples in Gyeongbuk Eastern Coast
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Son Jin-Chang
Min Kyung-Jin
Park Seung-Woo
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Abstract
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This study was carried out to investigated the distribution and characteristics of Vibrio spp. isolated from fish and shellfish. seawater and brackish water samples collected from Pohang, Uljin. Yeongduk and Gyeongju in Gyeongbuk Province from April 2000 to October 2000. Total 155 strains of genus Vibrio were isolated from 439 collected samples. and numbers of isolated strains of V.parahaemolyticus and V.vulnificus were 140 and 15, respectively. The isolation The from the samples collected in Pohang was the highest as 41.5% (76 strains). and was the highest as 71.4% (30 strains) in brackish water, and was the highest as 55.7% (34 strains) in August. And the optimal pH, temperature, and NaCI concentration for growth of V. parahaemolyticus and V. cholerae were 8.0, 30℃ and 2.0%, respectively. In a resistance test for environmental factors, heat and cold resistants of V. parahaemolyticus were higher than those of V. vulnificus, withstanding for 15 minutes at 60℃ and 6 days at -18℃. The pH range for existence of V. parahaemolyticus and V. vulnificus were 4.5-11.0 and 4.5-10.0, showing the similar resistance to pH. V. parahaemolyticus and V. vulnificus could grow in media containing up to 10.0% and 7.0% NaCI. respectively, Salt-tolerance of V. parahaemolyticus was higher than that of V. vulnificus. In an antibiotics sensitivity test against 16 strains of V. parahaemolyticus, twelve strains were resistant to ampicillin, eight strains were resistant to cephalothin, one strain was resistant to streptomycin, and one strain was resistant to ticarcillin.
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KEYWORD
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Vibrio spp., Fish, Shellfish, Seawater, Brackish water
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