Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Monitoring Kudoa septempunctata in Cultured Olive Flounder Paralichthys olivaceus in Different Regions of Korea in 2013

우리나라 양식 넙치(Paralichthys olivaceus) 육성어와 종묘의 지역별 Kudoa septempunctata 감염 현황

  • Song, Jun-Young (Pathology Division, National Fisheries Research and Development Institute) ;
  • Kim, Min-Jeong (Pathology Division, National Fisheries Research and Development Institute) ;
  • Choi, Hye-Sung (Pathology Division, National Fisheries Research and Development Institute) ;
  • Jung, Sung Hee (Pathology Division, National Fisheries Research and Development Institute)
  • 송준영 (국립수산과학원 병리연구과) ;
  • 김민정 (국립수산과학원 병리연구과) ;
  • 최혜승 (국립수산과학원 병리연구과) ;
  • 정승희 (국립수산과학원 병리연구과)
  • Received : 2014.07.23
  • Accepted : 2014.09.04
  • Published : 2014.10.31
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Abstract

A nationwide survey was conducted to study the rate of Kudoa septempunctata parasitization in cultured olive flounder, Paralichthys olivaceus, in Korea in 2013. Of 1107 olive flounder sampled randomly from 89 culture farms in five different regions in Korea, K. septempunctata was detected only in Jeju, where 10 of 318 fish (3.14%) were PCR positive, with genomic concentrations of $4.67{\times}10^5$ to $1.48{\times}10^{11}$ rDNA copies/g by real-time PCR. Of the ten Kudoapositive fish, K. septempunctata spores with 5-7 polar capsules were detected only in four fish. No samples of K. septempunctata were detected in olive flounder from the other regions surveyed. Furthermore, K. septempunctata was not detected in 326 samples of olive flounder seeds sampled from 39 hatcheries in seven different regions in Korea. Therefore, the parasite infection is restricted to Jeju and K. septempunctata infection is not spread from hatcheries.

Keywords

References

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