title: Circadian activity rhythm of the gopher tortoise (Gopherus polyphemus).
mesh_terms: D000818:Animals; D002940:Circadian Rhythm; D003624:Darkness; D006799:Housing, Animal; D008027:Light; D008124:Locomotion; D009949:Orientation; D012044:Regression Analysis; D013696:Temperature; D014426:Turtles / Q000502:physiology*