Department of Toxicology, Faculty of Veterinary Medicine, University of Murcia, Campus de Espinardo, 30100 Murcia, Spain.
Mar Pollut Bull. 2012 Nov;64(11):2461-70. doi: 10.1016/j.marpolbul.2012.07.045. Epub 2012 Aug 27.
Levels of mercury (Hg) were analyzed in the tissues of 50 Razorbills (Alca torda), from the Mediterranean area, which had drowned in fishing nets. The mercury distribution pattern in tissues was similar to those of other studies (liver > feather vane > kidney > muscle > brain > feather shaft), with mercury concentrations of 2.85 ± 0.90, 2.66 ± 1.60, 2.23 ± 0.87, 1.54 ± 0.54, 1.48 ± 0.54 and 1.30 ± 0.76 mg/kg (dry weight), respectively. It could be considered that Razorbills in the southwestern Mediterranean were chronically exposed to relatively low levels of MeHg, probably below 0.5 ppm, via dietary intake. We have proposed prediction equations for brain and kidney Hg concentrations using feather shafts as non-invasive samples. This work provides a solid understanding of Razorbill Hg exposure both in their wintering and breeding grounds, and shows that this species can be useful for assessing marine environmental health in the Mediterranean area.
对 50 只在渔网中溺亡的地中海凤头鸊鷉（Alca torda）组织中的汞（Hg）水平进行了分析。组织中的汞分布模式与其他研究相似（肝＞羽片＞肾＞肌肉＞脑＞羽轴），汞浓度分别为 2.85±0.90、2.66±1.60、2.23±0.87、1.54±0.54、1.48±0.54 和 1.30±0.76mg/kg（干重）。可以认为，西南地中海的凤头鸊鷉通过饮食摄入，长期暴露于相对较低水平的 MeHg 中，可能低于 0.5ppm。我们提出了使用羽轴作为非侵入性样本预测脑和肾汞浓度的预测方程。这项工作为凤头鸊鷉在其越冬和繁殖地的汞暴露提供了深入的了解，并表明该物种可用于评估地中海地区海洋环境健康状况。
