Fisheries and Aquatic Sciences

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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First Record of Mycoplasma-like Organism in Pacific Oyster (Crassostrea gigas) in Korea

  • Choi Dong Lim (Pathology Division, National Fisheries Research and Development Institute) ;
  • Choi Hee Jung (Pathology Division, National Fisheries Research and Development Institute) ;
  • Lee Nam-Sil (Pathology Division, National Fisheries Research and Development Institute) ;
  • Park Mi Seon (Pathology Division, National Fisheries Research and Development Institute)
  • Published : 2003.09.01
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Abstract

During routine survey of Pacific oyster (Crassostrea gigas) collected from Tongyoung area in southern coast of Korea, histological examination revealed that a intracellular microorganisms infected the digestive gland of the oyster. They infected hepatopancreatic cells extensively. The size of intracellular microorganism was of 45 to 86nm in diameter and 200nm to more thar 500nm in length. They were pleomorphic. The morphological characteristic of intracellular microorganisms lacked cell wall and was bounded by the plasma membrane. They contained typical prokaryotic ribosomes and fibrillar DNA-like strands. No additional internal structure has been observed. Based on the lack of cell wall and the cellular localization, the intracellular microorganism is considered as a Mycoplasma-like organism.

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References

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