| Abstract: | A 30-day toxicity test was made to determine the relative toxicity of lead, a tin-lead alloy, zinc, nickel, teflon-coated steel, and tin, all in shot form, to pen-reared mallard drakes. All of the 15 ducks dosed \vith lead died. Twenty-seven percent of 15 dosed with alloy, and 20 percent of 15 dosed with zinc also died. Ten of the remaining zinc-dosed ducks showed signs of distress, including losses of muscular control and body weight. There were no deaths among 15 ducks dosed with nickel, 15 dosed with teflon-coated steel, and 15 dosed with tin. Seventy-three percent of those dosed with nickel shot eliininated all shot before the end of the 30-day period. Acid-fast intranuclear inclusion bodies were present in the kidneys of mallards dosed with commercial lead shot, or with tin-lead alloy shot, but not in the kidneys of birds given nickel, tin, or teflon-coated steel shot. Atypical, pale, acid-fast bodies were found in kidneys of 1 of 15 birds dosed with zinc. An iron-containing pigment, which stained positive with the Prussian blue technique, was present in variable amounts in almost all livers. Zinc-dosed ducks that died or were killed while still showing signs of zinc intoxication had higher iron levels in the liver than ducks that had recovered from zinc intoxication. |
| Genre: | Article |
| ProdID: | 5221272 |
| Citation Author: | Grandy, J.W.; Locke, L.N.; Bagley, G.E. |
| Citation Contributing Office: | Patuxent Wildlife Research Center |
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| Citation End Page: | 488 |
| Citation Issue: | 3 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Wildlife Management |
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| Citation Number Of Pages: | 6 |
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| Citation Phsyical Description: | 483-488 |
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| Citation Search Results Text: | Relative toxicity of lead and five proposed substitute shot types to pen-reared mallards; 1968; Article; Journal; Journal of Wildlife Management; Grandy, J.W.; Locke, L.N.; Bagley, G.E. |
| Citation Start Page: | 483 |
| Citation Volume: | 32 |
| Citation Year: | 1968 |
| Type: | citation/reference |
| Text: | Relative toxicity of lead and five proposed substitute shot types to pen-reared mallards; 1968; Article; Journal; Journal of Wildlife Management; Grandy, J.W.; Locke, L.N.; Bagley, G.E. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (DOCUMENT): | http://www.jstor.org/stable/3798926 |
| Date Other: | Wed, 16 Jun 2010 12:17 -0500 |
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