title: Plasma melatonin in the scincid lizard, Trachydosaurus rugosus: diel rhythm, seasonality, and the effect of constant light and constant darkness.
mesh_terms: D000222:Adaptation, Physiological; D000818:Animals; D002940:Circadian Rhythm; D003624:Darkness; D008027:Light; D008116:Lizards / Q000097:blood*; D008550:Melatonin / Q000097:blood*; D010507:Periodicity; D012621:Seasons
chemical_list: D008550:Melatonin