Sánchez-Virosta Pablo, Zamora-Marín José Manuel, León-Ortega Mario, Jiménez Pedro J, Rivas Silvia, Sánchez-Morales Lidia, Camarero Pablo R, Mateo Rafael, Zumbado Manuel, Luzardo Octavio P, Eeva Tapio, García-Fernández Antonio J, Espín Silvia
Area of Toxicology, Department of Socio-Sanitary Sciences, Campus de Espinardo, University of Murcia, 30100 Murcia, Spain.
Department of Zoology and Physical Anthropology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain.
Toxics. 2021 Sep 11;9(9):219. doi: 10.3390/toxics9090219.
Birds have historically suffered adverse effects by toxic elements, such as As, Pb, Hg, and Cd. However, reports on exposure to a wide range of elements, including rare earth elements and other minor elements of emerging concern, and the potential consequences for wildlife are still scarce. This study evaluates blood concentrations of 50 elements and their related effects on lutein and vitamin levels in the Eurasian blackbird () and wild rock pigeon (), inhabiting different scenarios of contaminant exposure. Blood concentrations of As, Cd, and Pb (and Mn in ) were increased in both species captured in the mining area, compared to the control site. also showed increased As, Cd, and Pb concentrations in blood in the agricultural-urban area, as compared to the control area, together with the highest Hg levels, which could be related to agricultural practices and industrial activities. Decreases of 33 and 38% in the plasma retinol levels in inhabiting the mining and the agricultural-urban areas, respectively, as compared to the control site, were associated with increased Pb, As, and Cd exposure. This could be due to a metal-driven suppressive effect in retinol metabolism and/or its over-use for coping with metal-related oxidative stress.
从历史上看，鸟类一直受到砷、铅、汞和镉等有毒元素的不利影响。然而，关于接触包括稀土元素和其他新出现的受关注微量元素在内的多种元素以及对野生动物潜在后果的报告仍然很少。本研究评估了欧亚鸲（）和野生岩鸽（）血液中50种元素的浓度及其对叶黄素和维生素水平的相关影响，它们栖息在不同的污染物暴露场景中。与对照地点相比，在矿区捕获的两个物种中，砷、镉和铅（以及中的锰）的血液浓度均有所增加。与对照区域相比，在农业 - 城市区域的血液中砷、镉和铅浓度也有所增加，同时汞含量最高，这可能与农业实践和工业活动有关。与对照地点相比，栖息在矿区和农业 - 城市区域的血浆视黄醇水平分别下降了33%和38%，这与铅、砷和镉暴露增加有关。这可能是由于金属对视黄醇代谢的抑制作用和/或其过度用于应对与金属相关的氧化应激。
