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- 2020.1
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This study was conducted to evaluate the acute effects of waterborne cadmium exposure on bioaccumulation and antioxidant enzymes in eels (Anguilla japonica) and to determine the median lethal concentration (LC50). Fish were exposed to different cadmium concentrations (0, 0.15, 0.30, 0.61, 1.83, 3.08, 3.67, 4.29, and 5.51 mg L?1) for 96 h. The LC50 of A. japonica to cadmium was 3.61 mg L?1. Cadmium accumulation generally increased in tissues with increasing waterborne cadmium concentrations. At ≥ 1.83 mg L?1 exposure, all tissues accumulated significant cadmium concentrations compared with the control group, in the order of kidney > liver > gill > spleen > muscle. Measurements of variation in actual cadmium concentrations showed that a reduction of the metal in experimental water was related to cadmium accumulation in tissues. As activity alteration of antioxidant enzymes for reactive oxygen species, superoxide dismutase and catalase activities increased at ≥ 0.61 mg L?1 significantly, glutathione peroxidase and glutathione S-transferase activities were not significantly changed. The results of this study suggest that acute exposure to waterborne cadmium is potentially fatal to A. japonica due to the metal’s major accumulation in various tissues and the effect of antioxidant enzyme activity.
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참고문헌 (55)
참고문헌 신청
Adriano DC / 2001 / Trace elements in terrestrial environments / Springer :867
Aldoghachi MAJ / 2016 / Acute toxicity and bioaccumulation of heavy metals in red tilapia fish / J Anim Plant Sci 26:507~513
Andaya AA / 1982 / Cadmium toxicity and uptake in Tilapia nilotica / Kalikasan 11:309~318
Atli G / 2006 / Response of catalase activity to Ag+, Cd2+, Cr6+, Cu2+ and Zn2+ in five tissues of freshwater fish Oreochromis niloticus / Comp Biochem Physiol Part C 143:218~224
Atli G / 2007 / Enzymatic responses to metal exposures in a freshwater fish Oreochromis niloticus / Comp Biochem Physiol Part C 145:282~287
Aldoghachi MAJ / 2016 / Acute toxicity and bioaccumulation of heavy metals in red tilapia fish / J Anim Plant Sci 26:507~513
Andaya AA / 1982 / Cadmium toxicity and uptake in Tilapia nilotica / Kalikasan 11:309~318
Atli G / 2006 / Response of catalase activity to Ag+, Cd2+, Cr6+, Cu2+ and Zn2+ in five tissues of freshwater fish Oreochromis niloticus / Comp Biochem Physiol Part C 143:218~224
Atli G / 2007 / Enzymatic responses to metal exposures in a freshwater fish Oreochromis niloticus / Comp Biochem Physiol Part C 145:282~287
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