LIGHT AND ENDOCRINE EVENTS IN BIRDS: ROLE OF THE DARK PERIOD AND CIRCADIAN RHYTHMS IN THE REGULATION OF THE GONADAL CYCLE.
D000818:Animals; D001717:Birds; D001921:Brain / Q000502:physiology*; D002940:Circadian Rhythm; D003624:Darkness; D006801:Humans; D007030:Hypothalamo-Hypophyseal System; D008027:Light; D008297:Male; D009489:Neurosecretion; D010507:Periodicity; D012098:Reproduction; D012106:Research; D013737:Testis
BIRDS; BRAIN PHYSIOLOGY; CIRCADIAN RHYTHM; DARKNESS; EXPERIMENTAL LAB STUDY; HYPOTHALAMO-HYPOPHYSEAL SYSTEM; LIGHT; NEUROSECRETION; PERIODICITY; REPRODUCTION; TESTIS