title: Lunar phasing of the thyroxine surge preparatory to seaward migration of salmonid fish.
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology; D001683:Biological Clocks; D010507:Periodicity; D012474:Salmon / Q000502:physiology*; D012621:Seasons; D013974:Thyroxine / Q000097:blood*
chemical_list: D013974:Thyroxine