Abstract：
The aviation sector is believed to be responsible for considerable environmental damage attributed to emission of a large number and amount of pollutants. Airports are often surrounded by forest fragments and humid areas that attract birds of prey and hence may potentially serve as useful bioindicators. The aim of the present study was to examine genotoxic potential in raptors exposed to airport pollution using the micronucleus (MN) test and morphological changes as evidenced by bilateral symmetry. This investigation was conducted at Salgado Filho International Airport of Porto Alegre - RS as well as in private and zoological breeding grounds. The presence of metals was measured in the blood cells of the collected birds. Seventeen birds (Caracara (Polyborus) plancus) were used in this study 11 from exposed and 6 from non-exposed group. The nuclear alterations clearly indicate that organisms exposed to airport pollution exhibited a significantly higher frequency of genetic damage compared to non-exposed birds. Further, manganese and chromium were detected exclusively in the blood of the exposed group. In contrast, the analysis of bilateral symmetry did not detect any significant morphologic differences between the two groups. Therefore, data indicate that blood genotoxic stress occurs in birds of prey living in civil aviation areas as evidenced by MN frequency increase and presence of manganese and chromium.
摘要：
航空部门被认为是造成大量和大量污染物排放造成的环境损害的原因。机场通常被森林碎片和潮湿地区包围，吸引着猛禽，因此可能成为有用的生物指标。本研究的目的是使用微核（MN）测试和双边对称性证明的形态变化来检查暴露于机场污染的猛禽的遗传毒性潜力。这项调查是在RS阿雷格里港的萨尔加多·菲略国际机场以及私人和动物繁殖地进行的。在收集的鸟类的血细胞中测量金属的存在。本研究中使用了17只鸟（Caracara（Polyborus）plancus），其中11只来自暴露组，6只来自非暴露组。核变化清楚地表明，与未暴露的鸟类相比，暴露于机场污染的生物表现出明显更高的遗传损伤频率。Further,锰和铬只在暴露组的血液中检测到。相比之下,双侧对称性分析未发现两组间有显著的形态学差异.因此,数据表明，生活在民航地区的猛禽中会发生血液遗传毒性应激，MN频率增加以及锰和铬的存在证明了这一点。
