Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Changes of Haematological Constituents in the Nile tilapia, Oreochromis niloticus Exposed to HCB and PCBs

HCB와 PCBs에 노출된 나일틸라피아, Oreochromis niloticus의 혈액성분의 변화

  • Cho Kyu Seok (Department of Aquatic Life Medicine, Pukyong National University) ;
  • Min Eun Young (Department of Aquatic Life Medicine, Pukyong National University) ;
  • Kang Ju Chan (Department of Aquatic Life Medicine, Pukyong National University)
  • 조규석 (부경대학교 수산생명의학과) ;
  • 민은영 (부경대학교 수산생명의학과) ;
  • 강주찬 (부경대학교 수산생명의학과)
  • Published : 2002.03.01
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Abstract

The study was carried out to investigate the changes of haematological constituents induced by dietary exposure of Hexachlorobenzene (HCB) and Polychlorinated biphenyls (PCBs) in nile tilapia, Oreochhromis niloticus. The nile tilapia were fed pellet with 0.05, 0.25 and 0.50 mg/kg body weight/day of HCB and PCBs for 30 days, respectively. HCB ($\ge$ 0.25 mg/kg) induced a significantly decreased the red blood cell count at 30 days, and the hemoglobin concentration and hematocrit value were significantly decreased after 20 days to 0.50 mg/kg. The diminution of red blood cell count, hemoglobin concentration and hamatocrit value by PCBs was found after 20 days at $\ge$0.25 mg/kg. The concentrations of calcium decreased significantly at 30 days at $\ge$0,25 mg/kg of PCBs-diet. However, magnesium and inorganic phosphorus did not show any noticeable changes in the range of 0.05$\~$o.50 mg/kg of HCB and PCBs compared to control group during the experimental period, The low concentration of total protein was observed at the last day of experiment to 0.50 mg/kg of HCB-diet, while total protein initiated to increase from 20 days at the 0.25 mg/kg of PCBs-diet. The glucose was significantly increased after 20 days at $\ge$0,25 mg/kg of HCB and PCBs, A significant increment GOT and GPT activities was noticed after 20 days at 0.50 mg/kg of HCB and PCBs, These results indicate that hematological and serum biochemical changes in the nile tilapia by dietary exposure to HCB and PCBs are affected at more than 0,25 mg/kg after 20 days.

유용 양식어류인 틸라피아를 대상으로 어체중당 1일 0.05, 0.25 및 0.50mg/kg의 HCB와 PCBs의 경 구투여에 의해 30일 동안 혈액성상 및 혈액화학적 변동을 조사하였다. HCB의 투여에 의한 틸라피아의 RBC 수는 20일 이후 0.50mg/kg, 30일째는 0.25mg/kg의 농도, hemoglobin 농도와 hematocrit 값은 20일 이후 0.50mg/kg 농도에서 유의한 감소를 나타냈다. PCBs의 투여에 의한 틸라피아의 RBC 수, hemoglobin 농도 및 hematocrit 값은 20일 이후 0.25mg/kg 이상의 농도에서 유의한 감소를 나타냈다. 혈청 무기성분인 calcium, magnesium 및 inorganic phosphorus 농도는 HCB를 투여한 모든 실험에서 뚜렷한 차이가 인정되지 않았다. 또한, PCBs를 투여한 모든 실험에서도 magnesium과 inorganic phosphorus 농도의 변동은 관찰되지 않았으나, calcium 농도는 20일 이후 0.50mg/kg 농도, 30일째는 0.25mg/kg 이상의 농도에서 유의한 감소를 나타냈다 HCB의 경구투여에 의한 혈청 total protein 농도는 30일째 0.50mg/kg 농도에서, PCBs의 경구투여에 의해서는 20일 이후 0.25mgfg 이상의 농도에서 유의하게 감소하였다. HCB 및 PCBs의 경구투여에 의한 glucose 농도는 20일 이후 0.25mg/kg 이상의 농도에서 유의한 증가를 나타냈다. HCB 및 PCBs의 경구 투여에 의한 GOT와 GPT 활성은 20일 이후의 0.50mg/kg에서 유의한 증가를 나타냈다. 결론적으로 HCB 및 PCBs의 경구투여에 의한 틸라피아의 혈액화학적 변동은 0.25 mg/kg 농도 이상에서 적어도 20일 후부터 영향을 받을 것으로 생각된다.

Keywords

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