• Journal of Food Hygiene and Safety
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• v.32 no.6
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• pp.542-549
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• 2017

To evaluate bacteriological and toxicological safety, the hygienic indicator bacterium and paralytic and diarrhetic shellfish toxins in the shellfish produced in the Kamakman Area from 2012 to 2016 were investigated. Fecal coliforms and E. coli of all 194 oyster samples tested did not exceed 230 MPN/100 g. The geometric mean of the fecal coliform analyzed with the oyster samples of harvesting period was 19.6 MPN/100 g, which was more stable than the non-harvesting period (26.5 MPN/100 g). For the toxicological evaluation of the Kamakman Area, 77 oyster samples and 350 mussel samples as an indicator were analyzed. Paralytic shellfish toxins were detected very low in the range of $40{\sim}46{\mu}g$/100 g in 13 mussel samples during late April and early June, but not in oyster samples. Diarrhetic shellfish toxin was detected in 2 of 180 samples, but it was found to be below the regulation value (0.16 mg OA equ./kg). Based on the bacteriological studies, it was confirmed that the shellfish produced in Kamakman area meets the standard of shellfish hygiene of the Food Sanitation Act and meets the Grade A of the shellfish production area of EU. As the results of the paralytic and diarrhetic shellfish toxin evaluation, it was confirmed that the Kamakman Area is also toxicologically safe for shellfish production.

• Proceedings of the Korean Aquaculture Society Conference
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• 2004.05a
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• pp.505-505
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• 2004

Pathological conditions of Pacific oysters were surveyed in some coastal areas of Korea. Samples of 30 to 45 oysters were collected in Kamakman, Masan and in Gosung Bay. Protozoan includes gregarine-like organism, Marteilioides chungmuensis, Haplosporidium; ciliates Ancitrocoma and Metazoa (termatode, nematode, copepod) were observed in samples from most of the sampling areas. Marteilioides chungmuensis was found in all sampling sites. Protozoan, Halosporidium sp. and Ancistrocoma sp. occurred in oysters from Gosung Bay (year 2000) with very low prevalence. Trematode Gymnophalloides was frequently found in oysters from all studied areas. Inflammation was frequently observed in oysters infected with M. chungmuensis and Pseudomyicola. The damaged structures were found in digestive tubes of oysters infected by Halosporidium sp. and Pseudomyicola sp. Some of the parasites and pathological status could associate with the conditions of oysters and the environment.