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Insecticide residues on weathered passerine carcass feet

January 1, 2003

Nine brown-headed cowbirds ( Molothrus ater ) were exposed to turf sprayed with either EarthCare® (25% diazinon; 4.77 L a.i./ha) or Ortho-Klor® (12.6% chlorpyrifos; 5.21 L a.i./ha). Birds were euthanized and one foot from each bird was weathered outdoors for up to 28 days and the other foot was kept frozen until residue analysis. When compared to the unweathered feet, feet weathered for 28 days retained 43% and 37% of the diazinon and chlorpyrifos, respectively. Insecticide residues were below the level of detection (1.0 ppm) on control feet. Weathered feet may be used for determining organophosphorus insecticide exposure to birds.

Publication Year 2003
Title Insecticide residues on weathered passerine carcass feet
DOI 10.1080/713848508
Authors N.B. Vyas, J. W. Spann, C.S. Hulse, J.J. Butterbrodt, J. Mengelkoch, K. MacDougall, B. Williams, P. Pendergrass
Publication Type Article
Publication Subtype Journal Article
Series Title Environmental Forensics
Index ID 5224287
Record Source USGS Publications Warehouse
USGS Organization Patuxent Wildlife Research Center