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A comparison of non-destructive sampling strategies to assess the exposure of white-tailed eagle nestlings (Haliaeetus albicilla) to persistent organic pollutants
Eulaers, I.; Covaci, A.; Hofman, J.; Nygard, T.; Halley, D.J.; Pinxten, R.; Eens, M.; Jaspers, V.L.B. (2011). A comparison of non-destructive sampling strategies to assess the exposure of white-tailed eagle nestlings (Haliaeetus albicilla) to persistent organic pollutants. Sci. Total Environ. 410: 258-265. https://hdl.handle.net/10.1016/j.scitotenv.2011.09.070
In: Science of the Total Environment. Elsevier: Amsterdam. ISSN 0048-9697; e-ISSN 1879-1026, more
Peer reviewed article  

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Keyword
    Haliaeetus albicilla (Linnaeus, 1758) [WoRMS]
Author keywords
    Body feathers; Nestling; Non-destructive sampling; POPs; Preen oil;White-tailed eagle

Authors  Top 
  • Eulaers, I., more
  • Covaci, A., more
  • Hofman, J.
  • Nygard, T.
  • Halley, D.J.
  • Pinxten, R., more
  • Eens, M., more
  • Jaspers, V.L.B., more

Abstract
    To circumvent difficulties associated with monitoring adult predatory birds, we investigated the feasibility of different non-destructive strategies for nestling white-tailed eagles (Haliaeetus albicilla). We were able to quantify polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs) and organochlorinated pesticides (OCPs) in body feathers (16.92, 3.37 and 7.81 ng g− 1 dw, respectively), blood plasma (8.37, 0.32 and 5.22 ng mL− 1 ww, respectively), and preen oil (1157.95, 30.92 and 440.74 ng g− 1 ww, respectively) of all nestlings (N = 14). Strong significant correlations between blood plasma and preen oil concentrations (0.565 ≤ r ≤ 0.801; P < 0.05) indicate that preen oil levels closely reflect the internal state of contamination. We found fewer significant correlations between body feather and blood plasma concentrations, which were almost exclusively between PCB concentrations (0.554 ≤ r ≤ 0.737; P < 0.05). These results differ from a previous study on younger nestlings, and may indicate that the nestlings studied here, ready to fledge the nest, were possibly undergoing certain physiological changes that may have confounded the use of body feathers as biomonitor matrix. Finally, we provide an integrated discussion on the use of body feathers and preen oil as non-destructive biomonitor strategies for nestling predatory birds.

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