The Korean Journal of Malacology (한국패류학회지)

The Malacological Society of Korea (한국패류학회)
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A study on the effects of an artificial oil-spill on the ultrastructural changes in the digestive glands of Crassostrea gigas

태안반도 기름 유출사고 이후 인근해안에 서식하는 굴(Crassostrea gigas) 간췌장 (digestive gland) 의 미세구조 변화에 관한 연구

  • Jun, Je-Cheon (Aquaculture management Division, NFRDI) ;
  • Kang, Se-Won (Department of Parasitology, College of Medicine and UHRC, Inje University) ;
  • Baek, Moon-Ki (Department of Parasitology, College of Medicine and UHRC, Inje University) ;
  • Jeong, Ji-Eun (Department of Parasitology, College of Medicine and UHRC, Inje University) ;
  • Shin, Yun-Kyung (Aquaculture management Division, NFRDI) ;
  • Park, Young-Je (Sea Green Industry Institute) ;
  • Han, Yeon-Soo (Department of Agricultural Biology, College of Agriculture and Life Science, Chonnam National University) ;
  • Lee, Yong-Seok (Department of Parasitology, College of Medicine and UHRC, Inje University)
  • 전제천 (국립수산과학원 양식관리과) ;
  • 강세원 (인제대학교 의과대학 기생충학교실) ;
  • 백문기 (인제대학교 의과대학 기생충학교실) ;
  • 정지은 (인제대학교 의과대학 기생충학교실) ;
  • 신윤경 (국립수산과학원 양식관리과) ;
  • 박영제 (바다녹색산업연구소) ;
  • 한연수 (전남대학교 농업생명과학대학 식물생명공학부) ;
  • 이용석 (인제대학교 의과대학 기생충학교실)
  • Received : 2011.02.05
  • Accepted : 2011.02.28
  • Published : 2011.03.31
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Abstract

The unwanted artificial oil-spill has severely contaminated the coastal environment in the world. Level of contamination has so far been monitered by various indicator species including mussel, oysters, flounder, and cockle. In this study, we decided to use the oyster as a model organism to observe the morphological changes being exposed to the artificial oil-spill in the coastal areas in Taean, Korea. The oysters were collected from four local sites (Sindu-ri, Uiwang-ri, Jonghyeon-dong, Ansan and Uihang-ri) exposed to various levels of pollution after an oil spill in Taean. Microscopic analysis of the hepatopancreatic microstructure in the digestive gland from the collected oysters show that the swelling, whorl, and destruction phenomenon of the nuclear membrane, a well-known microstructure induced by heavy metal exposure, was observed. Nuclear body (Nb), another typical characteristic of contamination or infection were also observed in some samples. Necrosis was observed in tissue samples collected from the area with a high degree of oil pollution. In addition, parasite-like particles (virus, perkinsus) were observed in most samples. Taken together, these results suggest that oil contamination in the oyster habitats influences the cytopathological changes in Crassostrea gigas.

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References

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