Studies on fish appetite and its control.

点击翻译按钮获取中文摘要

1. Rainbow trout were successfully reared under simulated seasonal changes. Behavioral and social characteristics of dominant fish were studied in grouped fish. (M. Tabata)2. Red sea bream larvae were successfully reared by self-feeder with newly devised optical fiber sensor. Seasonal diurnal feeding pattern except only for the summer was observed in grouped red sea bream. Water temperature had significant effect on main feeding peak. (K. Aida ＆ K. Furukawa)3. Yellowtails in floating net-pens displayed annual crepuscular plus nocturnal self-feeding pattern. They synchronized well with simulated annual photoperiod. Light was a primary self-feeding pattern of yellowtails. (J. Kohbara)4. Self-feeding network system was developed by operating remote control through internet. The system had several functions ; 1) monitor for self-feeding, 2) display and data saving, and 3) feed control. (M. Ichikawa ＆ K. Yamashita)5. Plasma glucose level of self-fed rainbow trout peaked at approximately the … More time of lights-off. Immunoreactivity to neuropeptide Y (NPY) in the ventral telencephalon was studied in self-feeding and fasted group. (T. Oishi)6. We demonstrated the effects of temperature and photoperiod on plasma and ocular melatonin rhythms in the self-fed trout. We also characterized melatonin receptors in the brain of European sea bass and demonstrated its daily variation. (M. Iigo)7. The single ayu showed diurnal feeding pattern when reared by self-feeding. Both tactile and optical fiber sensor was assessed in respect to availability for this species. (K. Yamamori)8. Self-feeding Nile tilapia had lower cortisol level. The self-feeding fish significantly exceeded the scheduled feeding fish in the phagocytic activity of macrophages, antibody production, and number of blood circulating lymphocytes. (M. Endo)9. Rainbow trout preferred a balanced amino acid diet over an unbalanced diet or a protein-free diet. Initially fatty trout reduced their energy intake compared to initially lean trout. (T. Yamamoto) Less