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 shrink-age, 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.
|Title||Brain lesions in mallard ducklings from parents fed methylmercury|
|Authors||G. H. Heinz, L. N. Locke|
|Publication Subtype||Journal Article|
|Series Title||Avian Diseases|
|Record Source||USGS Publications Warehouse|
|USGS Organization||Patuxent Wildlife Research Center|