Tex. Parks & Wild. Code § 61.051
(a) The department shall conduct scientific studies and investigations of all species of game animals, game birds, and aquatic animal life to determine:
Acts 1975, 64th Leg., p. 1405, ch. 545, Sec. 1, eff. Sept. 1, 1975.
Amended by Acts 1997, 75th Leg., ch. 1256, Sec. 75, eff. Sept. 1, 1997.