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2013 (Vol. 6, Issue: 13)
Article Information:

Effects of Water-Borne Mercury and Cadmium Exposure on Lipid Peroxidation and Antioxidant Enzymes in Mangrove Red Snapper Lutjanus argentimaculatus

Xue-Feng Wang, Wen-He Chen, Zhe Zhang, Hai-Gang Chen and Xiao-Ping Jia
Corresponding Author:  Xiao-Ping Jia 

Key words:  Antioxidant enzymes, biomarkers, Lutjanus argentimaculatus, trace metal, , ,
Vol. 6 , (13): 2395-2401
Submitted Accepted Published
December 17, 2012 January 07, 2013 August 05, 2013
Abstract:

Effects of waterborne cadmium (Cd2+) and mercury (Hg2+) both separately and in combination on the lipid peroxidation and antioxidant activity in Lutjanus argentimaculatus was investigated. The fish was exposed for 3, 7 and 15 days respectively to Cd2+, Hg2+ and the mixture of both. Exposure to Cd2+ was done at three different concentrations viz 1, 5 and 100 μg/L .The fish was exposed to Hg2+ at 0.2,0.5 and 10 μg/L. Further L. argentimaculatus was also exposed to a mixture containing 5 μg/L Cd2+ and 0.5 μg/L Hg2+. The results showed increased levels of antioxidant enzymes such as Superoxide Dismutase (SOD), Catalase (CAT) and Peroxidase (POD) (p<0.05) both in hepatic and branchial tissues. The level of Malonialdehyde (MDA) which is an indicator of lipid peroxidation also showed significant increase (p<0.05). Further, antioxidant enzymes and MDA could not fall down to normal levels even after 15 days of release to clean sea water in all the treatments tested. However, the activity of antioxidant enzymes in the fishes exposed to mixture containing both Cd2+ and Hg2+ did not showed remarkable raise as when treated separately. The study indicated that the increase of antioxidant enzymes activity and MDA need to be considered carefully as pollution indicators as their values do not conform well to the corresponding metal ion concentrations, in view of co-effects of metals.
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  Cite this Reference:
Xue-Feng Wang, Wen-He Chen, Zhe Zhang, Hai-Gang Chen and Xiao-Ping Jia, 2013. Effects of Water-Borne Mercury and Cadmium Exposure on Lipid Peroxidation and Antioxidant Enzymes in Mangrove Red Snapper Lutjanus argentimaculatus.  Research Journal of Applied Sciences, Engineering and Technology, 6(13): 2395-2401.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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