Dell'Omo Giacomo, Costantini David, Lucini Valeria, Antonucci Giovanni, Nonno Romolo, Polichetti Alessandro
Ornis italica, Rome, Italy.
Comp Biochem Physiol C Toxicol Pharmacol. 2009 Sep;150(3):372-6. doi: 10.1016/j.cbpc.2009.06.002. Epub 2009 Jun 11.
Nesting on high voltage transmission line towers exposes birds to electric and magnetic fields for long periods. Nestlings are exposed from their development in ovo until fledging. This is a critical period for them because the quality of the developmental environment may affect their fitness at adulthood. We carried out a field study on Eurasian kestrels, Falco tinnunculus, to compare chicks from pairs nesting on high voltage power lines vs. those nesting in control sites in similar habitats. The magnetic field (MF) was measured in each nest-box and analysed in relation to growth curves, melatonin levels, leukocyte counts, and fledging success. None of the variables differed between exposed and control nestlings. Wing length (proxy of age) showed a negative covariation with serum melatonin concentration. Our findings suggest that exposure to MFs produced by high voltage power lines during the embryonic and post-hatching period (until fledging) does not have significant short-term physiological effects on kestrel nestlings.
在高压输电线路塔上筑巢会使鸟类长时间暴露于电场和磁场中。雏鸟从胚胎发育到羽翼丰满都处于这种环境中。这对它们来说是一个关键时期，因为发育环境的质量可能会影响它们成年后的健康状况。我们对欧亚红隼（Falco tinnunculus）进行了一项野外研究，比较在高压输电线路上筑巢的亲鸟所育雏鸟与在类似栖息地的对照地点筑巢的亲鸟所育雏鸟。在每个巢箱中测量了磁场（MF），并分析了其与生长曲线、褪黑素水平、白细胞计数和出飞成功率之间的关系。暴露组和对照组雏鸟的这些变量均无差异。翅长（年龄的指标）与血清褪黑素浓度呈负协变关系。我们的研究结果表明，在胚胎期和孵化后时期（直到羽翼丰满）暴露于高压输电线产生的磁场中，对红隼雏鸟没有显著的短期生理影响。
