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Biochemical indicators and biomarkers in chub (Squalius cephalus L.) from the Sava River

2015; Elsevier BV; Volume: 540; Linguagem: Inglês

10.1016/j.scitotenv.2015.06.098

1879-1026

Mirjana Mihailović, Duško Blagojević, Nives Ogrinc, Predrag Simonović, Vladica Simić, Melita Vidaković, Svetlana Dinić, Aleksandra Uskoković, Nevena Grdović, Jelena Arambašić Јovanović, Miloš Đorđević, Anja Tolić, Margareta Kračun‐Kolarević, Stoimir Kolarević, Marina Piria, Momír Paunović,

Aquaculture Nutrition and Growth

Biochemical indicators and biomarkers were analyzed in the liver and gills of chub caught in three localities along the Sava River exposed to different environmental impacts. Sampling sites were: downstream from Zagreb (Zgd), downstream Sremska Mitrovica (SM) and downstream from Belgrade (Bgd). We observed that the relative amounts and levels of activity of Cu, Zn containing superoxide dismutase and glutathione in both the liver and gills, and the relative amounts of heat shock protein (HSP90) and metallothioneins in the gills were highest in the Zgd locality, suggesting a higher impact of metal pollution. The Zgd locality had higher concentrations of trace metals in the water, especially iron. In the SM and Bgd localities, higher relative levels of glutathione peroxidase and catalase were recorded (especially in SM) as compared to the Zgd locality, pointing to the presence of hydrogen peroxide and different classes of organic peroxides. Low water oxygen and high temperature levels in the Bgd locality suggesting different metabolic activity between examined locations. Our results suggest that different presence and concentrations of individual environmental factors (total environment) influence the way how fish establish homeostasis.