title: Ethanol preference in the rat as a function of photoperiod.
abstract: Ethanol-drinking was induced in laboratory rats that were maintained in total darkness. The established preference for ethanol was not reversed under conditions of constant illumination although a decrease in ethanol intake occurred. Administration of melatonin to rats maintained under "normal" photoperiods (9 hours of darkness during a 24-hour day) also induced ethanol-drinking.
mesh_terms: D000428:Alcohol Drinking; D000818:Animals; D001683:Biological Clocks; D002940:Circadian Rhythm; D003624:Darkness; D000431:Ethanol / Q000008:administration & dosage*; D008027:Light; D008297:Male; D009074:Melanocyte-Stimulating Hormones / Q000008:administration & dosage*; D008954:Models, Biological; D051381:Rats; D013997:Time Factors
chemical_list: D000431:Ethanol; D009074:Melanocyte-Stimulating Hormones