Mortality of birds of prey following field application of granular carbofuran: a case study
Raptors found dead on a fodder-beet field treated with carbofuran, as well as earthworms from the corresponding field, were analyzed for carbofuran content. The application of granular carbofuran to the field resulted in an initially high amount of carbofuran in the pooled earthworm samples. In subs...
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Veröffentlicht in: | Archives of environmental contamination and toxicology 1995-07, Vol.29 (1), p.140-145 |
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Sprache: | eng |
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Zusammenfassung: | Raptors found dead on a fodder-beet field treated with carbofuran, as well as earthworms from the corresponding field, were analyzed for carbofuran content. The application of granular carbofuran to the field resulted in an initially high amount of carbofuran in the pooled earthworm samples. In subsequent laboratory studies, carbofuran at concentrations of 25, 50, and 100 mg/kg earth was found to be acutely toxic to earthworms and led to a high uptake of carbofuran. Of the eight raptors inspected, five had partially filed crops containing mostly earthworms. Subsequent analysis of the crop contents revealed the presence of carbofuran in all of the crop samples, with amounts ranging 3 1100 mu g carbofuran/crop. The data indicated that the field application of granular carbofuran can result in copious concentrations of carbofuran in earthworms immediately after application and following increased dissolution during rainy periods. |
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ISSN: | 0090-4341 1432-0703 |
DOI: | 10.1007/BF00213099 |