Coal fly ash basins as an attractive nuisance to birds: parental provisioning exposes nestlings to harmful trace elements.
Environ Pollut
; 161: 170-7, 2012 Feb.
Article
en En
| MEDLINE
| ID: mdl-22230082
ABSTRACT
Birds attracted to nest around coal ash settling basins may expose their young to contaminants by provisioning them with contaminated food. Diet and tissues of Common Grackle (Quiscalus quiscala) nestlings were analyzed for trace elements to determine if nestlings were accumulating elements via dietary exposure and if feather growth limits elemental accumulation in other tissues. Arsenic, cadmium, and selenium concentrations in ash basin diets were 5× higher than reference diets. Arsenic, cadmium, and selenium concentrations were elevated in feather, liver, and carcass, but only liver Se concentrations approached levels of concern. Approximately 15% of the total body burden of Se, As, and Cd was sequestered in feathers of older (>5 days) nestlings, whereas only 1% of the total body burden of Sr was sequestered in feathers. Feather concentrations of only three elements (As, Se, and Sr) were correlated with liver concentrations, indicating their value as non-lethal indicators of exposure.
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Oligoelementos
/
Aves
/
Sustancias Peligrosas
/
Exposición a Riesgos Ambientales
/
Ceniza del Carbón
/
Residuos Industriales
Tipo de estudio:
Risk_factors_studies
Límite:
Animals
Idioma:
En
Revista:
Environ Pollut
Asunto de la revista:
SAUDE AMBIENTAL
Año:
2012
Tipo del documento:
Article
País de afiliación:
Estados Unidos