(a) The executive director of the department shall serve on the Gulf States Marine Fisheries Commission in an ex-officio capacity, and his term expires when he ceases to hold the office of executive director of the department. His successor as a member of the Gulf States Marine Fisheries Commission is his successor as executive director of the department.
(b) The legislator appointed as a member of the Gulf States Marine Fisheries Commission shall serve in an ex-officio capacity, and his term expires at the time he ceases to hold his legislative office. His successor as a member of the Gulf States Marine Fisheries Commission shall be appointed as provided by Section 91.001(2) of this code.
(c) The citizen appointed as a member of the Gulf States Marine Fisheries Commission shall serve a term of three years or until his successor has been appointed and has qualified. A vacancy in this position shall be filled for the unexpired term by appointment by the governor with the advice and consent of the senate.