Blood concentrations of 50 elements in Eagle owl (Bubo bubo) at different contamination scenarios and related effects on plasma vitamin levels.

Autor: Sánchez-Virosta P; Area of Toxicology, Department of Socio-Sanitary Sciences, University of Murcia, Campus de Espinardo, 30100, Murcia, Spain. Electronic address: pablo.s.v@um.es., León-Ortega M; Department of Ecology and Hydrology, Faculty of Biology, University of Murcia, Murcia, Spain., Calvo JF; Department of Ecology and Hydrology, Faculty of Biology, University of Murcia, Murcia, Spain., Camarero PR; Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC, UCLM, JCCM), Ronda de Toledo 12, 13005, Ciudad Real, Spain., Mateo R; Instituto de Investigación en Recursos Cinegéticos, IREC (CSIC, UCLM, JCCM), Ronda de Toledo 12, 13005, Ciudad Real, Spain., Zumbado M; Toxicology Unit, Research Institute of Biomedical and Health Sciences, University of Las Palmas de Gran Canaria, Las Palmas, Spain; Spanish Biomedical Research Center in Physiopathology of Obesity and Nutrition (CIBERObn), Spain., Luzardo OP; Toxicology Unit, Research Institute of Biomedical and Health Sciences, University of Las Palmas de Gran Canaria, Las Palmas, Spain; Spanish Biomedical Research Center in Physiopathology of Obesity and Nutrition (CIBERObn), Spain., Eeva T; Department of Biology, University of Turku, Turku, Finland., García-Fernández AJ; Area of Toxicology, Department of Socio-Sanitary Sciences, University of Murcia, Campus de Espinardo, 30100, Murcia, Spain. Electronic address: ajgf@um.es., Espín S; Area of Toxicology, Department of Socio-Sanitary Sciences, University of Murcia, Campus de Espinardo, 30100, Murcia, Spain. Electronic address: silvia.espin@um.es.
Jazyk: angličtina
Zdroj: Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2020 Oct; Vol. 265 (Pt A), pp. 115012. Date of Electronic Publication: 2020 Jun 14.
DOI: 10.1016/j.envpol.2020.115012
Abstrakt: Some metals and metalloids (e.g. Pb, Hg, Cd and As) are well-known for their bioaccumulation capacity and their toxic effects on birds, but concerns on other minor elements and rare earth elements (ME and REE) are growing due to their intensive use in modern technology and potential toxicity. Vitamins and carotenoids play essential roles in nestling growth and proper development, and are known to be affected by the metals classically considered as toxic. However, we are unaware of any attempts to evaluate the exposure to 50 elements and related effects in plasma vitamins and carotenoids in raptor species. The main goals of this study are: (i) to assess the exposure to 50 elements (i.e. classic toxic elements, trace elements, REE and ME) in nestling Eagle owls (Bubo bubo) inhabiting three differently polluted environments (mining, industrial and control areas) in southeastern Spain, and (ii) to evaluate how element exposure affects plasma vitamin and carotenoid levels, hematocrit and body measurements (mass and wing length) of the individuals. Our results show that local contamination in the mining area contributes to increased blood concentrations of Pb, As and Tl in nestlings, while diet differences between control and mining/industrial areas may account for the different levels of Mn, Zn, and Sr in blood, and lutein in plasma. Plasma tocopherol levels were increased in the mining-impacted environment, which may be a mechanism of protection to prevent toxic element-related oxidative stress. Plasma α-tocopherol was enhanced by 20% at blood Pb concentrations ≥8 ng/ml, and nestlings exhibited up to 56% increase in α-tocopherol levels when blood Pb concentrations reached 170 ng/ml. Tocopherol seems to be a sensitive biomarker under an exposure to certain toxic elements (e.g. Pb, As, Tl).
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
Externí odkaz: