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Citation. Abraham, R. L. 1972. Mortality of mallards exposed to gamma radiation. Radiation Research 49(2):322-327. [1228 CC]
Abstract. An LD 50 (30) level of 704 R was caluclated for 4-month-old captive mallards. Fifty-five percent of all deaths occurred within the first 16 hours postirradiation. All deaths occurred within 18 days postirradiation. Comparison was made in the rate of dying and the number of deaths between two groups of young game-farm and old wild-caught mallards both given equal high doses of radiation. The percentage of deaths was similar in both groups, but the younger mallards died at a slightly faster rate.
Keywords. mallard, LD50, irradiation, Anas platyrynchos