Marine & Environmental Sciences Faculty Articles
Effects of the Light-Dark Cycle and Scheduled Feeding on Behavior and Reproductive Rhythms of the Cyprinodont Fish, Medaka, Oryzias latipes
Circadian rhythms, Zeitgebers, Oryzias latipes, Meal-feeding, Behavior, Environmental factors
Medaka were maintained on a 16∶8 light-dark cycle and fed once daily on one of 5 different feeding schedules. The daily rhythm of agonistic behavior rapidly entrained to the scheduled feeding time and maintained this entrainment during a 3-day starvation period. In contrast the daily rhythms of egg laying and courtship stayed entrained to the L:D cycle regardless of the feeding schedule. Thus, temporal integration of this fish with its daily environment can involve multistimuli which concurrently and differentially entrain externally expressed circadian systems.
NIH grant #: AM 25191; NIEHS ES grant #: 01985
D. N. Weber and Richard E. Spieler. 1987. Effects of the Light-Dark Cycle and Scheduled Feeding on Behavior and Reproductive Rhythms of the Cyprinodont Fish, Medaka, Oryzias latipes .Experientia , (6) : 621 -624. https://nsuworks.nova.edu/occ_facarticles/186.
©Birkhäuser Verlag Basel 1987