Gómez-Ramírez P, Bustnes J O, Eulaers I, Herzke D, Johnsen T V, Lepoint G, Pérez-García J M, García-Fernández A J, Jaspers V L B
Department of Toxicology, Faculty of Veterinary Medicine, University of Murcia, Campus de Espinardo, 30100 Murcia, Spain.
Norwegian Institute for Nature Research, The Fram Centre, 9296 Tromsø, Norway.
Environ Res. 2017 Oct;158:277-285. doi: 10.1016/j.envres.2017.06.019. Epub 2017 Jun 26.
Plasma samples from nestlings of two top predators, White-tailed eagle (Haliaeetus albicilla) and Northern goshawk (Accipiter gentilis) from northern Norway were analysed for a wide range of per- and polyfluoroalkyl substances (PFASs). Body feathers from the White-tailed eagles were also analysed and significant associations between specific PFASs in blood plasma and body feathers were found (0.36 <R < 0.67; all p < 0.05). This result suggests that analysing body feathers of White-tailed eagle could potentially be a useful non-invasive strategy to monitor PFASs exposure in nestlings of this species. White-tailed eagles showed significantly higher levels of contaminants than Northern goshawks (plasma ∑PFASs Median = 45.83 vs 17.02ngmL, p <0.05). The different exposure between both species seemed to be related to different dietary input, as quantified by stable carbon and nitrogen isotope analysis of body feathers. A priori, the bird of prey populations studied are not at risk for PFASs, since the levels in plasma of both species were hundreds to thousand times lower than the toxic reference values reported for predatory birds. However, further studies on larger sample sizes are needed to confirm this hypothesis since toxic thresholds for nestling birds of prey are not established.
对来自挪威北部的两种顶级捕食者白尾海雕（Haliaeetus albicilla）和矛隼（Accipiter gentilis）雏鸟的血浆样本进行了多种全氟和多氟烷基物质（PFASs）的分析。还对白尾海雕的体羽进行了分析，发现血浆和体羽中的特定PFASs之间存在显著关联（0.36 <R < 0.67；所有p < 0.05）。这一结果表明，分析白尾海雕的体羽可能是监测该物种雏鸟PFASs暴露情况的一种有用的非侵入性策略。白尾海雕体内的污染物水平显著高于矛隼（血浆中总PFASs中位数分别为45.83和17.02ng/mL，p < 0.05）。通过对体羽的稳定碳和氮同位素分析量化发现，两种物种之间不同的暴露情况似乎与不同的饮食摄入有关。从先验角度来看，所研究的猛禽种群不存在PFASs风险，因为两种物种血浆中的水平都比报道的捕食性鸟类的毒性参考值低数百到数千倍。然而，由于尚未确定雏鸟猛禽的毒性阈值，需要对更大样本量进行进一步研究以证实这一假设。
