| Abstract: | Grasshoppers (Orthoptera) were collected in pastures that had been sprayed with malathion and acephate to estimate the secondary exposure of insectivorous birds to these 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. |
| Genre: | Article |
| ProdID: | 5221519 |
| Citation Author: | Stromborg, K.L.; McEwen, L.C.; Lamont, T. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 45 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Chemistry in Ecology |
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| Citation Number Of Pages: | 7 |
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| Citation Phsyical Description: | 39-45 |
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| Citation Search Results Text: | Organophosphate residues in grasshoppers from sprayed rangelands; 1984; Article; Journal; Chemistry in Ecology; Stromborg, K.L.; McEwen, L.C.; Lamont, T. |
| Citation Start Page: | 39 |
| Citation Volume: | 2 |
| Citation Year: | 1984 |
| Type: | citation/reference |
| Text: | Organophosphate residues in grasshoppers from sprayed rangelands; 1984; Article; Journal; Chemistry in Ecology; Stromborg, K.L.; McEwen, L.C.; Lamont, T. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://dx.doe.org/10.1080/02757548408070819 |
| Date Other: | Wed, 16 Jun 2010 12:19 -0500 |
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