Journal of fish pathology (한국어병학회지)

The Korean Society of Fish Pathology (한국어병학회)
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A case report of farmed olive flounder Paralichthys olivaceus infected with Myxosporean Parvicapsula anisocaudata

양식 넙치에서 Parvicapsula anisocaudata의 감염 사례에 대한 보고

  • Kim, Nam Eun (Department of Aquatic Life Medicine, Pukyong National University) ;
  • Kim, Ahran (Department of Aquatic Life Medicine, Pukyong National University) ;
  • Roh, Heyong Jin (Department of Aquatic Life Medicine, Pukyong National University) ;
  • Gang, Kyoung Sik (Department of Aquatic Life Medicine, Pukyong National University) ;
  • Kim, Do-Hyung (Department of Aquatic Life Medicine, Pukyong National University)
  • 김남은 (부경대학교 수산생명의학과) ;
  • 김아란 (부경대학교 수산생명의학과) ;
  • 노형진 (부경대학교 수산생명의학과) ;
  • 강경식 (부경대학교 수산생명의학과) ;
  • 김도형 (부경대학교 수산생명의학과)
  • Received : 2018.11.25
  • Accepted : 2018.12.09
  • Published : 2018.12.31
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Abstract

Parvicapsula anisocaudata, a myxosporean parasite, is presumably one of causative agents of emaciation in olive flounder Paralichthys olivaceus in Korea. In this study, we report a case of unusual abdominal distension due to exceptionally enlarged liver in farmed olive flounder. For the identification of the causative agent, bacteria and nucleic acids of virus that are possibly present were attempted to isolate from internal organs of five fish sampled from a fish farm in Jeju. Although a few bacterial colonies were isolated from some samples, there was no evidence that fish were primarily affected by virus and/or bacteria. From histopathological analysis, myxosporean were found in almost all internal organs, particularly in the stomach. The causative agent was identified as P. anisocaudata by sequencing a part of small subunit rRNA. This study contains a very unusual case of olive flounder heavily and systemically infected with P. anisocaudata, showing excessively enlarged liver with a small amount of ascitic fluid.

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References

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