title: Anticoagulant rodenticides in red-tailed hawks, Buteo jamaicensis, and great horned owls, Bubo virginianus, from New Jersey, USA, 2008-2010.
abstract: Liver samples from red-tailed hawks (Buteo jamaicensis) and great horned owls (Bubo virginianus) were analyzed for anticoagulant rodenticides. Residues of one or more second generation anticoagulant rodenticides (SGARs) were detected in 81 % of red-tailed hawks and 82 % of great horned owls. The most frequently detected SGAR was brodifacoum, which was detected in 76 % of red-tailed hawks and 73 % of great horned owls. Bromadiolone was detected in 20 % of red-tailed hawks and 27 % of great horned owls. Difenacoum was detected in one great horned owl. No other ARs were detected. There were no significant differences between species in the frequency of detection or concentration of brodifacoum or bromadiolone. There was a marginally significant difference (p = 0.0497) between total SGAR residues in red-tailed hawks (0.117 mg/kg) and great horned owls (0.070 mg/kg). There were no seasonal differences in the frequency of detection or concentration of brodifacoum in red-tailed hawks. The data suggest that SGARs pose a significant risk of poisoning to predatory birds in New Jersey.
authors.affiliation: New Jersey Division of Fish and Wildlife, Office of Fish and Wildlife Health and Forensics, PO Box 394, Lebanon, NJ, 08833, USA, bill.stansley@earthlink.net.
authors.forename: William
authors.initials: W
authors.lastname: Stansley
authors.forename: Margaret
authors.initials: M
authors.lastname: Cummings
authors.forename: Daljit
authors.initials: D
authors.lastname: Vudathala
authors.forename: Lisa A
authors.initials: LA
authors.lastname: Murphy
mesh_terms: D000818:Animals; D000925:Anticoagulants / Q000378:metabolism*; D004784:Environmental Monitoring; D004785:Environmental Pollutants / Q000378:metabolism*; D046428:Hawks / Q000378:metabolism*; D009515:New Jersey; D012378:Rodenticides / Q000378:metabolism*; D020305:Strigiformes / Q000378:metabolism*
chemical_list: D000925:Anticoagulants; D004785:Environmental Pollutants; D012378:Rodenticides