Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Chronic effects of lead exposure on oxidative stress biomarkers in feral pigeon (Columba livia) from smelter area in Kosovo.

Abstract

The effects of lead exposure on oxidative stress biomarkers in feral pigeon (Columba livia) from Mitrovicë town (situated in close vicinity of ormer lead and zinc smelter) were studied through the use of blood Pb (PbB) levels, d-aminolevulinic acid dehydratase (δ-ALAD) activity, level of plasma δ-Aminolevulinic acid (ALA), Glutathione (GSH), Malondialdehyde (MDA), Uric acid (UA), Urea (U), and creatinine (CR). Lead levels in pigeons from Mitrovicë were significantly elevated (P < 0.001) compared to the control. Elevated PbB in pigeons from Mitrovicë was also accompanied by significantly inhibited (P < 0.001) δ-ALAD activity in blood, significantly decreased levels of GSH and MDA (P < 0.001; <0.05), and significantly elevated levels of ALA, UA, CR (P < 0.001) compared to the control. Negative correlation was observed between PbB and δ-ALAD activity (r= -0.409; P < 0.05) in birds in Mitrovicë. This study provides important evidence about the chronic effects of lead on the analyzed oxidative stress biomarkers. In addition, the study proves that the pigeons in Mitrovicë remain chronically exposed to harmful effects of lead, and that the close vicinity of the former smelter "Trepça" still represents a source of exposure to lead for the health of biota and humans.