| Abstract: | In 1985 and 1986, we captured nesting wild female European starlings with young 8-10 days of age. Birds were weighted, banded, and given one of four dosages of the OP insecticide parathion (50, 72, 104 or 150 mg/kg dissolved in corn oil) or pure corn-oil (control). and their young weighed. Nest boxes (7- 12/treatment) were observed and young re-weighed 2-3 days postdose to determine presence/absence of the females. If necessary, males were captured and fate of young used to confirm female response. Brain ChE inhibition in dosed birds (based on a pilot study) was 55-74%. EC50‘s (failure to return to nest box) for the females was 74 mg/kg in 1985 and 92 mg/kg in 1986. Confidence limit (95%) for these estimates overlapped LD50‘s for captive female starlings dosed with the OP in spring and early summer 1987 (136, 128 mg/kg, respectively). Results suggest that responses of captive and free-living birds to potentially lethal concentrations of OP‘s are similar, despite the additional stresses in the wild. |
| Genre: | Article |
| ProdID: | 5224018 |
| Citation Author: | Grue, C.E.; Rattner, B.A.; Bunck, C.M. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation Language: | English |
| Citation Larger Work Title: | Society of Environmental Toxicology and Chemistry, annual meeting abstract book |
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| Citation Phsyical Description: | 77 (abstract no. 248) |
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| Citation Search Results Text: | Extrapolating laboratory avian toxicity data to free-living birds: Comparison of the toxicity of parathion to captive and free-living European starlings; 1993; Article; Journal; Society of Environmental Toxicology and Chemistry, annual meeting abstract book; Grue, C.E.; Rattner, B.A.; Bunck, C.M. |
| Citation Start Page: | 77 (abstra |
| Citation Volume: | 14 |
| Citation Year: | 1993 |
| Type: | citation/reference |
| Text: | Extrapolating laboratory avian toxicity data to free-living birds: Comparison of the toxicity of parathion to captive and free-living European starlings; 1993; Article; Journal; Society of Environmental Toxicology and Chemistry, annual meeting abstract book; Grue, C.E.; Rattner, B.A.; Bunck, C.M. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Wed, 16 Jun 2010 12:18 -0500 |
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