TY - JOUR ID - 2073 TI - Changes in biochemical and physiological responses of common carp, Cyprinus carpio L. after long-term exposure to Pb (II) JO - Caspian Journal of Environmental Sciences JA - CJES LA - en SN - 1735-3033 AU - Heidary, S. AU - Hajimoradloo, A. AU - Bani, A. AU - Aghamaali, M. AU - Ghorbani, R. AD - Gorgan University AD - University of Guilan Y1 - 2016 PY - 2016 VL - 14 IS - 4 SP - 311 EP - 320 KW - Cyprius carpio KW - Pb KW - Lipid peroxidation KW - Oxidative stress KW - Morphological indices DO - N2 - In this study, the chronic toxic effects of Pb (II) on common carp, Cyprius carpio were  investigated using  several  biomarkers at different levels of biological functions for assessing changes in ecosystem quality. In a bioassay, common carp juveniles were individually exposed to different dose of heavy metal, Pb II (0, 0.45, 0.89, 1.34 mg.l-1) for 28 days. Morphological indices such as hepatosomatic index, condition factor and lipid peroxidation (LPO) level and also the activities of superoxide dismutase  (SOD) and catalase (CAT) were measured. These results indicated that  there was significant lower condition factor in fish exposed to the highest concentration of Pb (p<0.05). The activity of hepatic antioxidant enzymes (SOD & CAT)  and LPO level was  significantly elevated after long-term exposure to higher concentration of Pb (p<0.05). Briefly, our findings suggested that common carp exposed to lead, develop oxidative stress, hence long-term exposure to higher concentrations of Pb could seriously affect the health status of fish. UR - https://cjes.guilan.ac.ir/article_2073.html L1 - https://cjes.guilan.ac.ir/article_2073_113847e564e60f5d55dbe60d000696cb.pdf ER -