Organophosphate residues in grasshoppers from sprayed rangelands
Chemistry and Ecology
By: K. L. Stromborg, L. C. McEwen, and Thair Lamont
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Abstract
Grasshoppers (Orthoptera) were collected in pastures that had been sprayed with malathion and acephate to estimate the secondary exposure of insectivorous birds to those pesticides. Residues of malathion were below 3 ppm at 30 and 54 hours after spraying and no malaoxon was detected. In contrast, acephate was found at 8 and 9 ppm 4 hours after spray; 3–5 ppm of the toxic metabolite methamidophos were also detected at that time. By 53 hours postspray, acephate levels declined to 2 ppm and methamidophos to less than 1 ppm. These results suggest that although malathion may not be a hazard to insectivorous species, acephate may be hazardous through metabolic transformation to methamidophos.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Organophosphate residues in grasshoppers from sprayed rangelands |
| Series title | Chemistry and Ecology |
| DOI | 10.1080/02757548408070819 |
| Volume | 2 |
| Issue | 1 |
| Year Published | 1984 |
| Language | English |
| Publisher | Taylor & Francis |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 7 p. |
| First page | 39 |
| Last page | 45 |
| Google Analytic Metrics | Metrics page |