어패류의 NAG-Nibrio 분포에 관한 연구

Distribution of NAG Vibrio in fish and shell-fish

Investigation has been conducted on the distribution of NAG Vibrio in fish and shell-fish, marine invertebrate from May, 1998 to October, 1998. 91 samples of fish including Japan seabass, Lacteolabrax japanicus, Bastard halibut, Paralichthys olivaceus, Spottybelly greenling, Hexagrammos agrammus and 74 samples of shell-fish including Common orient clam, Meretrix lamarckii deshayes, Baby clam, Ruditapes philippinanum and 33 samples of marine invertebrate including Webfoot octopus, Octopus ocellatus, Blue crab, Portunus trituberculatus has been taken at the market place in Kunsan, Korea. The results are as follows; 1. V. cholerae non-O1 was detected in 25 samples out of 193 samples and V. mimicus was detected in 23 samples out of 198 samples. Thus, detection rate of V. choleroe nm-O1 and V. mimicus was 12.6% and 11.6%, respectively. 2. Detection rate of V. cholerae non-Ol was 11.0％ in fish samples, 12.2% in shell-fish samples, 182% in marine invertebrate samples. In other hands, detection rate of V. mimirus was 11.0％ in fish samples, 10.8% in shell-fish samples, 15.2％ in marine invertebrate samples. Thus, it can be concluded that marine invertebrates including Webfoot octopus, Odopus ocellatus, Blue crab, Portunus trituberadatus are very susceptible to V. cholera? non-Ol and V. mimirus comparing fish and shell-fish. 3. Detetion rate of V. cholerae non-Ol was 29.2％ in September, 28.6% in August, and 20.2% in July. In other hands, none of V. cholerae non-O1 was detected in March. Detection rate of V. mimicus was 28.6％ in August, 2:5.0% in September and 24.006 in July. However V. mimicus was not detected at all in March. 4. MPN values of V. cholerae non-O1 and V. mimicus was 130-l,400 MPN/100g and 33~950 MPN/100g, respectively. It means that the MPN value of V. cholerae non-O1 was higher than that of V. mimicus.