Metal levels in mourning doves from South Carolina : Potential hazards to doves and hunters.
Most game birds are found in lower trophic levels, but since such birds are harvested and consumed by humans, there is a particular need to assess their contaminant levels.
In this paper, we report concentrations of mercury, lead, cadmium, selenium, manganese, and chromium in the breast feathers, liver, and muscle of mourning doves (Zenaida macroura) collected at a partially drawn-down, contaminated reactor-cooling reservoir (Par Pond) on the Department of Energy's Savannah River Site in South Carolina and at nearby agricultural fields managed as dove hunting areas.
We test the hypothesis that the levels in doves are not harmful to either dove populations or humans.
We also tested the simultaneous effects of collection location, year (1992,1993), and dove age-class (hatch-year vs after hatch-year) on heavy metal and selenium levels.
For all three tissues, mercury levels were nondetectable at all locations.
Lead was highest in tissues from agricultural fields with prior histories of dove hunting activities.
Doves at those fields were likely ingesting lead shot to a greater degree than at the recently drawn-down reservoir which was closed to public access and hunting.
For other metals, Par Pond doves had equally high or higher tissue levels.
For all metals, levels in doves from South Carolina were generally within the lower range of those reported in the literature, suggesting that these metals were likely to pose no health problems to these doves. (...)
Mots-clés Pascal : Gibier à plumes, Zenaida macroura, Aves, Vertebrata, Taux, Métal lourd, Polluant, Environnement, Caroline du Sud, Etats Unis, Amérique du Nord, Amérique, Contamination, Aliment, Facteur risque, Homme, Toxicité, Chasseur
Mots-clés Pascal anglais : Game bird, Zenaida macroura, Aves, Vertebrata, Rate, Heavy metal, Pollutant, Environment, South Carolina, United States, North America, America, Contamination, Food, Risk factor, Human, Toxicity
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0065960
Code Inist : 002A14D05H3. Création : 14/05/1998.