암모니아 급성노출에 따른 대왕범바리 (Epinephelus fuscoguttatus ♀× E. lanceolatus ♂)의 혈액성상 및 혈장성분의 변화
Changes of hematological parameters and plasma components in the hybrid grouper (Epinephelus fuscoguttatus ♀×E. lanceolatus ♂) by acute ammonia exposure
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초록
본 실험에서 암모니아 급성 노출은 대왕범바리의 혈액학적 성상 및 혈장 성분에 유의적 변화를 나타내었다. 본 실험의 결과 20 mg L-1 이상의 급성 암모니아 노출은 대왕범바리의 혈액학적 성상 및 혈장 성분에 영향을 주어 생리적 변화를 일으키며, 40 mg L-1의 급성 암모니아 농도는 대량 폐사를 유발할 수 있음을 나타낸다. 향후 대왕범바리 바이오플락 양식기술 적용을 위한 양식연구에 이러한 결과를 지표로 활용할 수 있을 것이다.
Abstract
Hybrid grouper (Epinephelus fuscoguttatus ♀×E. lanceolatus ♂) (mean weight 25.7±3.5 g, mean length 11.2±0.9 cm) were exposed to different ammonia concentrations of 0, 5, 10, 20, and 40 mg L-1 for 96 hours. The hematological hematocrit and hemoglobin parameters of the hybrid grouper were significantly decreased by 20 mg L-1 ammonia exposure. In the organic plasma components, calcium was significantly decreased, whereas there was no change in magnesium. In the organic plasma components, the glucose and cholesterol values of the hybrid grouper were significantly increased by ammonia exposure. In the enzymatic plasma components, the ALP (Alkaline phosphatase) value of the hybrid grouper was also significantly increased by ammonia exposure. The results of this study demonstrate that acute ammonia exposure to hybrid grouper induced changes in hematological parameters and plasma components. Therefore, acute ammonia exposure over 20 mg L-1 appears to be toxic to hybrid grouper and the results can be used as a major indicator in breeding hybrid grouper.
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