|
Description: |
iv, 24 pages : illustrations ; 26 cm. |
|
|
Bibliography Note: |
Includes bibliographical references (pages 12-14). |
|
|
Summary, Etc. Note: |
Abstract: Tissues of adult, lead-dosed mallards that either died or were sacrificed were analyzed for lead. Lead levels in brains, tibiae, and breast muscle of ducks that died and in tibiae of ducks that were sacrificed increased significantly from dosage until death. Lead in the heart, lung, and blood from sacrificed ducks decreased significantly from dosage until death. Measurements of lead concentrations in this study, when compared with lead levels reported in the literature for avian and non-avian species, showed that arbitrary diagnostic levels indicating lead poisoning could be set. In mallard ducks, lead levels exceeding 3 ppm in the brain, 6 to 20 ppm in the kidney or liver, or 10 ppm in clotted blood from the heart indicated acute exposure to lead. |
|
|
Additional Physical Forms: |
Online version: Patuxent Wildlife Research Center. Significance of lead residues in mallard tissues. Washington : U.S. Dept. of the Interior, Fish and Wildlife Service : For sale by the Supt. of Docs., U.S. Govt. Print. Off., 1974 (OCoLC)633086143 |