The Agricultural Pests Act of Alberta (1942) authorized the Minister of Agriculture to designate as a pest any animal that was likely to destroy crops or livestock. Responsibility for rat control was transferred from the Alberta Department of Health to the Department of Agriculture. Consequently, the Alberta government decided to halt, or at least slow, the spread of rats into Alberta In 1950.
The discovery was made by field crews from Alberta Department of Health who were engaged in studies of sylvatic plague, a disease of Richardson's ground squirrel.Īlthough aware of the economic destruction caused by rats, provincial authorities were initially concerned that rats might spread plague throughout Alberta. Norway rats were first discovered on a farm in Alberta near Alsask, on the eastern border, during the summer of 1950.
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