| Abstract: | Blood samples were taken from 181 (108 adult drakes and 73 individuals of mixed age and sex) mallards, Anas platyrhynchos , from Colusa and Delevan National Wildlife Refuges during late winter and summer of 1987. The percentage of birds with elevated lead concentration was 28.7 for late winter and 16.4 for late summer. For summer trapped birds, a significantly greater proportion of males than females contained elevated lead levels. These findings indicate that lead poisoning may be a year-round event in certain areas of the Sacramento Valley. |
| Genre: | Article |
| ProdID: | 1004117 |
| Citation Author: | Mauser, D. M.; Rocke, T. E.; Mensik, J. G.; Brand, C. J. |
| Citation Contributing Office: | National Wildlife Health Center |
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| Citation End Page: | 136 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | California Fish and Game |
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| Citation Number Of Pages: | 5 |
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| Citation Phsyical Description: | p. 132-136 |
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| Citation Search Results Text: | Blood lead concentrations in mallards from Delevan and Colusa National Wildlife Refuges; 1990; Article; Journal; California Fish and Game; Mauser, D. M.; Rocke, T. E.; Mensik, J. G.; Brand, C. J. |
| Citation Start Page: | 132 |
| Citation Volume: | 76 |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Blood lead concentrations in mallards from Delevan and Colusa National Wildlife Refuges; 1990; Article; Journal; California Fish and Game; Mauser, D. M.; Rocke, T. E.; Mensik, J. G.; Brand, C. J. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1990 00:00 -0600 |
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