Impact of Inland Pollution sources on Oysters (Crassostrea gigas) produced in Kamak Bay, Korea
Soon Bum Shin, Sang Hyeon Jeong, Chi Won Lim, Woo Suk Choi and Ji Hee Lee
South Sea Fisheries Research Institute, NIFS, Yeosu 59780, Republic of Korea Southeast Sea Fisheries Research Institute, NIFS, Tongyeong 53085, Republic of Korea
In this study, we examined influences of inland pollution sources on oysters (Crassostrea gigas) produced in Kamak bay. According to survey results, 3 sources of major inland pollution sources exceeded 1 km of radius of influence from January 2017 to December 2017. And from January 2017 to June 2019, the range of Fecal coliform, geometric mean and 90th percentile for 15 seawaters adjacent major pollution source were < 1.8-130 MPN/100 mL, < 1.8-2.3 and 1.8-7.3 MPN/100 mL. Also the range of Fecal coliform, E. coli and viable cell counts were < 18-790, < 18-230 MPN/100 g and < 30-850 CFU/g respectively. These results indicate that sweater and oyster of Kamak bay meets the standard of shellfish hygiene of Food Sanitation Act and assessed to be the Grade A. But some inland pollution sources affect Kamak Bay, so improvement or expansion of sewage treatment plant are necessary.
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