Toxicological Effects of Heavy Metal (Pb +2) on Peroxidase Activity in Freshwater Fish, Catla catla | [Pakistan Journal of Agricultural Research • 2019]

Author(s):

1. Nosheen: Department of Zoology, Wildlife and Fisheries, University of Agriculture Faisalabad,Pakistan

2. Sajid Abdullah: Department of Zoology, Wildlife and Fisheries, University of Agriculture Faisalabad,Pakistan

3. Huma Naz: Department of Zoology, Cholistan University of Veterinary and Animal Sciences,Bahawapur,Pakistan

4. Khalid Abbas: Department of Zoology, Wildlife and Fisheries, University of Agriculture Faisalabad,Pakistan

Abstract:

Freshwater ecosystems have been contaminated with a wide range of pollutants. Heavy metals are important contaminants of aquatic system and can cause oxidative stress in fish. Evaluation of antioxidant in fish can reveal metal toxicity in the water ecosystem. Therefore, this experiment was planned to assess the acute afect of lead (Pb +2) on peroxidase (POD) activity in tissues viz. liver, gills, kidney, muscle, heart and brain of fish Catla catla exposed for 4-day. After each sampling (24-hr interval) fish were dissected and required organs were obtained. Results showed that the POD activity was augmented in all selected organs of Pb+2 exposed fish in relation to control. The POD activity in organs of fish followed the order: brain>liver>gills>kidney>heart>muscle. Regression analysis showed a positive relationship between POD activity and duration of exposure. It was also concluded that antioxidants enzymes can be used as a valuable biomarker of oxidative stress in aquatic animals.

Page(s): 656-661

DOI: DOI not available

Published: Journal: Pakistan Journal of Agricultural Research, Volume: 32, Issue: 4, Year: 2019

Keywords:

antioxidant enzymes , Heavy metals , fish , organs , Acute

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