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Sublethal Lead Exposure Alters Movement Behavior in Free-Ranging Golden Eagles
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Number of Authors: 16
2017 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 51, no 10, 5729-5736 p.Article in journal (Refereed) Published
Abstract [en]

Lead poisoning of animals due to ingestion of fragments from lead-based ammunition in carcasses and offal of shot wildlife is acknowledged globally and raises great concerns about potential behavioral effects leading to increased mortality risks. Lead levels in blood were correlated with progress of the moose hunting season. Based on analyses of tracking data, we found that even sublethal lead concentrations in blood (25 ppb, wet weight), can likely negatively affect movement behavior (flight height and movement rate) of free ranging scavenging Golden Eagles (Aquila chrysaetos). Lead levels in liver of recovered post-mortem analyzed eagles suggested that sublethal exposure increases the risk of mortality in eagles. Such adverse effects on animals are probably common worldwide and across species, where game hunting with lead-based ammunition is widespread. Our study highlights lead exposure as a considerably more serious threat to wildlife conservation than previously realized and suggests implementation of bans of lead ammunition for hunting.

Place, publisher, year, edition, pages
2017. Vol. 51, no 10, 5729-5736 p.
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Environmental Engineering Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-144829DOI: 10.1021/acs.est.6b06024ISI: 000401674400042PubMedID: 28414429OAI: oai:DiVA.org:su-144829DiVA: diva2:1121287
Available from: 2017-07-10 Created: 2017-07-10 Last updated: 2017-07-10Bibliographically approved

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