International Science Community Association International Research Journal of Biological Sciences 2278-3202 7 11 2018 11 10 Oxidative stress and antioxidant enzymes in tissues of freshwater fishes as biomarkers of aquatic pollution 27 30 EN Sharma Arti 1 Department of Zoology, University of Jammu, J&K-180006, India Singh Radhika 2 Department of Zoology, University of Jammu, J&K-180006, India . Bandhana 3 Department of Zoology, University of Jammu, J&K-180006, India Sangotra Rashmi 4 Department of Zoology, University of Jammu, J&K-180006, India Abdullahi H.J. 1 Department of Biology, Ahmadu Bello University, Zaria, Nigeria Alonge S.O. 2 Department of Biology, Ahmadu Bello University, Zaria, Nigeria Zarafi A.B. 3 Department of Crop Protection, Institute of Agricultural Research (IAR), Ahmadu Bello University, Zaria, Nigeria Sood Monika 1 Department of Microbiology, Dolphin (P.G) College of Science and Agriculture, Chunni Kalan-140307, Punjab, India Dolma Tanzin 2 Department of Microbiology, Dolphin (P.G) College of Science and Agriculture, Chunni Kalan-140307, Punjab, India Kaur Pardeep 3 Department of Microbiology, Dolphin (P.G) College of Science and Agriculture, Chunni Kalan-140307, Punjab, India Lena P. Jasmin 1 Dept. of Biochemistry, Bharathidasan University Constituent College for Women, Orathanadu–614625, Thanjavur District, TamilNadu, India and Department of Biochemistry, Prince Shri Venkateshwara Arts and Science College, Gowrivakkam, Chennai- 600073, TamilNadu, India Maneemegalai S. 2 Department of Biochemistry, Prince Shri Venkateshwara Arts and Science College, Gowrivakkam, Chennai- 600073, TamilNadu, India > Short Communication 2018 7 17 2018 11 10 Our present study deals with the evaluation of oxidative stress due to pollutants which results in disastrous effect in aquatic ecosystems. Lipid hydroperoxide, lipid per oxidation (LPO), and the antioxidant enzyme levels were estimated. The lipid peroxide and lipid hydro peroxide levels were found to be increased in the organs - liver and kidney of Rohu (Labeo rohita) and Tilapia (Oreochromis niloticus) from the polluted site. CAT and SOD activity seems to be reduced in organ samples of both the fishes. Changes in the antioxidant enzymes, lipid per oxide and lipid hydro peroxide levels that was observed indicates the presence of pollutants in the Varahanadhi River. Copyright@ International Science Community Association