The department may expend such sums as are authorized by the Legislature from the Fisheries and Wildlife Fund for paying salaries of its employees, operating and maintaining equipment and for any other purpose the department is authorized to expend funds by law, which amount shall be available for expenditure. The money herein authorized shall be paid by the State Treasurer out of the Fisheries and Wildlife Fund on warrants issued by the Executive Director of the Department of Finance and Administration upon requisition signed by the Executive Director of the Mississippi Department of Wildlife, Fisheries and Parks.