Lead Exposure of Red-Shouldered Hawks During the Breeding Season in the Central Appalachians, USA.
Bull Environ Contam Toxicol
; 103(6): 783-788, 2019 Dec.
Article
em En
| MEDLINE
| ID: mdl-31646347
ABSTRACT
Lead is toxic to humans and wildlife. Most studies of lead exposure of raptors focus on the winter, non-breeding season when they scavenge heavily. We evaluated blood lead concentrations (BLCs) of red-shouldered hawks (Buteo lineatus) during the non-scavenging season in the eastern United States. BLCs of 53 of 70 hawks were above the limit of detection ([Formula see text] = 9.25 µg/dL ± 19.81; ± SD). Adult hawks had higher BLCs ([Formula see text] = 12.86 µg/dL ± 24.72) than did nestlings ([Formula see text] = 3.25 µg/dL ± 2.62; p ≤ 0.001, χ2 = 13.2). There was no difference in BLCs of adult hawks among physiographic provinces but there were differences between urban and non-urban settings (p = 0.04, χ2 = 4.2). Soils and invertebrate hawk prey also had quantifiable lead concentrations. Our work shows that red-shouldered hawks are exposed to lead when not scavenging, and suggests pathways by which these birds may be exposed.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cruzamento
/
Falcões
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Exposição Ambiental
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Poluentes Ambientais
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Chumbo
Limite:
Animals
País/Região como assunto:
America do norte
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article