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Telomere length in relation to persistent organic pollutant exposure in white-tailed eagle (Haliaeetus albicilla) nestlings from Sweden sampled in 1995-2013

Permanent lenke
https://hdl.handle.net/10037/24476
DOI
https://doi.org/10.1016/j.envres.2022.112712
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article.pdf (2.488Mb)
Publisert versjon (PDF)
Dato
2022-01-10
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Forfatter
Hansen, Elisabeth; Skotnes, Tove; Bustnes, Jan Ove; Igor, Eulaers; Sun, Jiachen; Covaci, Adrian; Bårdsen, Bård-Jørgen; Zahn, Sandrine; Criscuolo, Francois; Bourgeon, Sophie; Helander, Björn
Sammendrag
Telomeres are used as biomarkers of vertebrate health because of the link between their length, lifespan, and survival. Exposure to environmental stressors appears to alter telomere dynamics, but little is known about telomere length and persistent organic pollutant (POP) exposure in wildlife. The white-tailed eagle (WTE; Haliaeetus albicilla) is an avian top predator that accumulates high levels of POPs and may subsequently suffer adverse health effects. Here we study the Baltic WTE population that is well documented to have been exposed to large contaminant burdens, thereby making it a promising candidate species for analyzing pollutant-mediated effects on telomeres. We investigated telomere lengths in WTE nestlings (n = 168) over 19 years and examined legacy POP concentrations (organochlorines and polybrominated diphenyl ethers) in whole blood and serum as potential drivers of differences in telomere length. Although we detected significant year-to-year variations in telomere lengths among the WTE nestlings, telomere lengths did not correlate with any of the investigated POP concentrations of several classes. Given that telomere lengths did not associate with POP contamination in the Baltic WTE nestlings, we propose that other environmental and biological factors, which likely fluctuate on a year-to-year basis, could be more important drivers of telomere lengths in this population.
Er en del av
Hansen, E. (2023). Sublethal effects of environmental pollutant exposure in birds of prey: Evaluating biomarkers of health as indicators of contaminant-mediated effects in two sentinel raptor species. (Doctoral thesis). https://hdl.handle.net/10037/31537.
Forlag
Elsevier
Sitering
Hansen, Skotnes, Bustnes, Björn, Igor, Sun, Covaci, Bårdsen, Zahn, Criscuolo, Bourgeon. Telomere length in relation to persistent organic pollutant exposure in white-tailed eagle (Haliaeetus albicilla) nestlings from Sweden sampled in 1995-2013. Environmental Research. 2022
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