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Brain Lesions in Mallard Ducklings from Parents Fed Methylmercury
G. H. Heinz and L. N. Locke
Vol. 20, No. 1 (Jan. - Mar., 1976), pp. 9-17
Published by: American Association of Avian Pathologists
Stable URL: http://www.jstor.org/stable/1589469
Page Count: 9
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Methylmercury dicyandiamide was fed to mallard ducks at 3 ppm mercury. Mercury accumulated in the eggs to an average of 7.18 and 5.46 ppm on a wet-weight basis in 2 successive years. Mercury in the eggs is believed to have caused brain lesions in the hatched ducklings. Lesions included demyelination, neuron shrinkage, necrosis, and hemorrhage in the meninges overlying the cerebellum. Brains of dead ducklings contained an average of 6.17 and 5.19 ppm mercury on a wet-weight basis in 2 successive years.
Avian Diseases © 1976 American Association of Avian Pathologists