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NTIS 바로가기환경생물 = Korean journal of environmental biology, v.38 no.1, 2020년, pp.93 - 100
조재황 (국립수산과학원 서해수산연구소 양식산업과) , 김석렬 (국립수산과학원 서해수산연구소 양식산업과) , 허영백 (국립수산과학원 서해수산연구소 양식산업과) , 이경미 (국립수산과학원 서해수산연구소 양식산업과) , 김준환 (국립수산과학원 서해수산연구소 양식산업과)
Hybrid grouper (Epinephelus fuscoguttatus ♀×E. lanceolatus ♂) (mean weight 27.3±3.8 g, mean length 11.6±0.7 cm) were exposed to waterborne nitrite at 0, 100, 200, 400, 800, and 1600mg L-1 for 96 hours. The hematocrit and hemoglobin values were significantly decreas...
핵심어 | 질문 | 논문에서 추출한 답변 |
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아질산의 생리적독성을 평가함에 있어, 혈액상성의 변화는 어떻게 주요 지표로 생각될 수 있는가? | 2017). 아질산 노출은 어류의 Cl- 흡수 메커니즘을 통해 혈액에 축적되고 적혈구로 유입되어, 혈중hemoglobin (Hb)를 met-hemoglobin (Met-Hb)으로 전환시켜 산소 운반 능력의 상실로 인한 저산소증 및 질식을 유발한다(Tilak et al. 2007). 혈중 Met-Hb의 증가는 저산소증에 의한 골수 및 조혈 세포의 손상을 유발하고, 이는 혈액 성상인 Hb와 hematocrit (Hct)의 감소를 유발한다(Daset al. 2004b). 따라서 혈액 성상의 변화는 아질산의 생리적독성을 평가하기 위한 주요한 지표가 될 것이다. | |
아질산은 무엇인가? | 아질산은 수중생물의 질소대사과정 후 배설물에 의해 발생되는 암모니아에 의해 생성되는 중간산물이다. 일반적인 자연 환경 내에서 아질산은 산소가 충분한 경우 아질산 산화세균에 의해 질산으로 산화되고, 수중 생물에게 영향을 미치지 않는다( Jung et al. | |
일반적인 자연 환경 내에서 아질산이 갖는 특성은 무엇인가? | 아질산은 수중생물의 질소대사과정 후 배설물에 의해 발생되는 암모니아에 의해 생성되는 중간산물이다. 일반적인 자연 환경 내에서 아질산은 산소가 충분한 경우 아질산 산화세균에 의해 질산으로 산화되고, 수중 생물에게 영향을 미치지 않는다( Jung et al. 2016; Lee et al. |
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