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지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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The acute toxicity and sublethal effects of nitrite on the dark-banded rockfish, Sebastes inermis (mean body weight: $83.3{\pm}7.2$ g), were studied under static conditions for a period of 96 h. The acute toxicity of nitrite was at the 50% lethal concentration ($LC_{50}$) of 700 mg/L. The sublethal effects on selected hematological parameters of the dark-banded rockfish, such as its osmolality, hematocrit, cortisol, alanine aminotransferase (ALT), and aspartate aminotransferase (AST), were measured after 0, 6, 12, 24, 48, 72, and 96 h of exposure to 0, 50, 100, 200, 400, or 700 mg/L nitrite. Sublethal nitrite caused a progressive reduction in the hematocrit of the fish, depending on the nitrite concentration and the exposure period. Exposure to 100-700 mg/L nitrite for 96 h caused a reduction in the hematocrit and an increase in cortisol, ALT, and AST compared with the control levels. Abnormal ultrastructural changes in the gills and liver tissues were observed in fish exposed to 700 mg/L nitrite for up to 96 h compared with the control tissues. Ultrastructural changes included atrophic gill mitochondria and hepatocytes that developed smooth endoplasmic reticulum and atrophic mitochondria. Although no rockfish mortality occurred at 500 mg/L nitrite, all the hematological parameters examined responded adversely to a nitrite dose of 200 mg/L for 96 h. These results show that although the acute toxic concentration of nitrite for the dark-banded rockfish is > 700 mg/L, sublethal concentrations of nitrite also negatively affect its hematological parameters.
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참고문헌 (29)
참고문헌 신청
Alcaraz, G. / 1997 / Scope for growth of juvenile grass carp, Ctenopharyngodon idella exposed to nitrite / Comp. Biochem. Physiol 116:85~88
Alcaraz, G. / 1997 / Temperature tolerance of Penaeus setiferus postlarvae exposed to ammonia and nitrite / Aquat. Toxicol 39:345~353
Almendras, J. M. E. / 1987 / Acute nitrite toxicity and methemoglobinemia in juvenile milkfish, Chanos chanos Forsskal / Aquaculture 61:33~40
Barton, B.A. / 1991 / Physiological changes in fish from stress in aquaculture with emphasis on the response and effects of corticosteroids / Annu. Rev. Fish Dis 1:3~26
최희정 / 2005 / 양식산 볼락, Sebastes inermis Cuvier의 성장 특성 / 한국양식학회지 18(3):147~153
Alcaraz, G. / 1997 / Temperature tolerance of Penaeus setiferus postlarvae exposed to ammonia and nitrite / Aquat. Toxicol 39:345~353
Almendras, J. M. E. / 1987 / Acute nitrite toxicity and methemoglobinemia in juvenile milkfish, Chanos chanos Forsskal / Aquaculture 61:33~40
Barton, B.A. / 1991 / Physiological changes in fish from stress in aquaculture with emphasis on the response and effects of corticosteroids / Annu. Rev. Fish Dis 1:3~26
최희정 / 2005 / 양식산 볼락, Sebastes inermis Cuvier의 성장 특성 / 한국양식학회지 18(3):147~153
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