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Journal of Wildlife Diseases, 32(1), 1996, pp. 113-116
© Wildlife Disease Association  1996
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Mortality of passerines adjacent to a North Carolina corn field treated with granular carbofuran

T Augspurger, MR Smith, CU Meteyer, and KA Converse


ABSTRACT

Red-winged blackbirds (Agelaius phoeniceus) were collected during an epizootic in southeastern North Carolina (USA). Activity of brain cholinesterase (ChE) was inhibited by 14 to 48% in three of five specimens, and returned to normal levels after incubation. Gastrointestinal tracts were analyzed for 30 anti-ChE agents. Carbofuran, the only compound detected, was present in all specimens at levels from 5.44 to 72.7 micrograms/g wet weight. Application of granular carbofuran in an adjacent corn field, results of necropsy examinations, and chemical analyses are consistent with a diagnosis of carbofuran poisoning in these specimens.




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Copyright © 1996 by the Wildlife Disease Association.