Abstract
In this study, we investigated the α-tocopherol plasma concentrations in healthy free-ranging nestlings of the white-tailed sea eagle (Haliaeetus albicilla) (n = 32), osprey (Pandion haliaetus) (n = 39), northern goshawk (Accipiter gentilis) (n = 25), common buzzard (Buteo buteo) (n = 31), and honey buzzard (Pernis apivorus) (n = 18) as well as of free-ranging adults of the white-tailed sea eagle (n = 10), osprey (n = 31), and northern goshawk (n = 45). α-Tocopherol plasma concentrations were determined by reverse-phase high-performance liquid chromatography. α-Tocopherol plasma concentrations in nestlings of osprey, white-tailed sea eagle, and northern goshawk did not differ significantly amongst the species, but the common buzzard and honey buzzard nestlings had significantly lower α-tocopherol plasma concentrations than nestlings of the other species (both P < 0.001). Adult male ospreys and white-tailed sea eagles had significantly higher α-tocopherol concentrations compared to adult females (both P < 0.005). Adult ospreys and northern goshawks had significantly higher α-tocopherol plasma concentrations compared to their nestlings (both P < 0.001). In adult female northern goshawks, plasma concentrations of α-tocopherol increased significantly before egg laying (P < 0.001). These results demonstrate α-tocopherol plasma concentrations in birds of prey to be species specific and influenced by age and reproductive status.
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Acknowledgments
We would like to thank G. Dietrich, St. Fischer, A. Hallau, U. Hain, S. Herold, B. Heuer, H.D. Martens, W. Nachtigall, M.-C. Rothmund, R. Schönbrodt, Z. Shamaev, P. Sömmer, D. Stoewe, H. Tauchnitz, and F. Ziesemer for their generous help in capturing the birds and sampling the specimens. H. Sauer-Gürth (IPMB) assisted sexing the birds using PCR. D. Schmidt was supported by a grant from the Deutsche Ornithologen-Gesellschaft. K. Müller was supported by a grant from the Freie Universität of Berlin, Germany.
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Müller, K., Altenkamp, R., Raila, J. et al. Plasma concentration of α-tocopherol in different free-ranging birds of prey. Eur J Wildl Res 57, 1043–1049 (2011). https://doi.org/10.1007/s10344-011-0516-z
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DOI: https://doi.org/10.1007/s10344-011-0516-z