title: Organochlorine residue levels in livers of birds of prey from Spain: inter-species comparison in relation with diet and migratory patterns.
abstract: Livers from 130 specimens corresponding to 18 species of raptors from Spain were analysed for persistent organochlorine (OC) residues. In all species, p,p'-DDE was the most abundant individual OC compound detected, with geometric means ranging from 61 to 40,086 ng/g ww. The geometric mean for summation operator PCB ranged from 225 to 9184 ng/g ww. Migration to Africa, south of Sahara, where p,p'-DDT is still in use, was not associated with higher liver concentrations of its metabolite, p,p'-DDE. The presence of birds in the diet of the species was an important species-specific factor determining the mean liver concentrations of p,p'-DDE and summation operator PCB. The effect of the diet on OC concentrations in liver is explained by the lower metabolising capacity of OC compounds in birds, especially for p,p'-DDE.
authors: Laboratory of Toxicology, Faculty of Veterinary, Universitat Autònoma de Barcelona, Bellaterra, Spain.
authors: Barend
authors: B
authors: van Drooge
authors: Rafael
authors: R
authors: Mateo
authors: Ingrid
authors: I
authors: Vives
authors: Iris
authors: I
authors: Cardiel
authors: Raimon
authors: R
authors: Guitart
mesh_terms: D025041:Animal Migration; D000818:Animals; D003633:Dichlorodiphenyl Dichloroethylene / Q000032:analysis; D004781:Environmental Exposure; D004785:Environmental Pollutants / Q000032:analysis*; D020387:Food Chain; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D008099:Liver / Q000737:chemistry*; D010573:Pesticide Residues / Q000032:analysis*; D011078:Polychlorinated Biphenyls / Q000032:analysis; D020304:Raptors / Q000378:metabolism* / Q000502:physiology; D013030:Spain; D013045:Species Specificity
chemical_list: D004785:Environmental Pollutants; D006843:Hydrocarbons, Chlorinated; D010573:Pesticide Residues; D003633:Dichlorodiphenyl Dichloroethylene; D011078:Polychlorinated Biphenyls