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In this study, we monitored the status of marine environment of olive flounder, Paralichythys olivaceus, culture ground in Jeju-do, Republic of Korea. It reported the consumption of raw olive flounder meat containing of Kudoa, Kudoa septempunctata, could induce vomitting and diarrhea in Japan. The Kudoa is a new mycosporean species, researchers found Kudoa from the muscles of olive flounder cultured at western Japan and imported from Jeju-do. We choose two Kudoa positive farms and two negative farms in the mid of concern about the relation between Kudoa and habitat. We found two marine invasive species at the water-pumping seabed at one of the Kudoa positive farm. The concentration of pH and DO at on-growing flounder farms showed the decreasing pattern along side the raceway (influent sea waters  on growing sea waters  outfluent sea waters). The TN and TP values increased gradually following to the raceway (influent sea waters  on growing sea waters  outfluent sea waters). The concentration of COD and SS were in the range of 0.100 – 2.581 ㎎·L-1, 1.00 – 12.70 ㎎·L-1, respectively. The calculated residence time was 4hr 32minutes at F1, 11hr 21minutes at F2, and 9hr 50minutes at F3, respectively. It was calculated same distance of 4 km away from effluent pipes. Although direct relation between Kudoa and marine environment could not define well based on this study result, the more studies on marine environmental stressors for olive flounder are required to conduct as a reliable method including socio-economic group and environmental group.

susan haeyang gyoyuk yeon-gu/su'san haeyang gyoyug yeon'gu

Status of Marine Environment of Olive Flounder, Paralichythys olivaceus, Culture Ground in Jeju-do - Focus on Kudoa septempunctata positive and negative farm -