Instituto de Acuicultura de Torre de la Sal (C.S.I.C.), Ribera de Cabanes, 12595, Castellón, Spain.
Fish Physiol Biochem. 1988 Oct;5(4):191-7. doi: 10.1007/BF01874796.
Juvenile sea bass, 1.5 years old, of mixed sex, held on long photoperiods were fed early on the photoperiod and late on the photoperiod, using different diets. Fish fed natural diets showed a daily rhythmicity of plasma insulin, liver c-AMP, plasma glucose, liver glycogen and muscle glycogen content, however, fish fed a commercial diet did not show this daily rhythmicity except for plasma insulin levels. In addition, these fish had significantly lower levels of plasma insulin, liver c-AMP and plasma glycerol than the group fed on the natural diets at similar feeding times. The time of feeding also induced different rhythmicity patterns in hormones and metabolites as well as a significant change in their mean levels. These facts are discussed in relation with the pre-feeding activity and increased appetite exhibited by the fish fed late on the photoperiod and with their implications on fish culture.
1.5 龄雄性和雌性混养的幼海鲈鱼，采用不同的饲料，在长光照周期下，分别在光照周期的早期和晚期进行投喂。摄食天然饲料的鱼表现出血浆胰岛素、肝 c-AMP、血糖、肝糖原和肌肉糖原含量的每日节律性，然而摄食商业饲料的鱼除了血浆胰岛素水平外，没有表现出这种每日节律性。此外，这些鱼在相似的摄食时间下，血浆胰岛素、肝 c-AMP 和血浆甘油三酯的水平显著低于摄食天然饲料的鱼。摄食时间也会诱导激素和代谢物的不同节律模式，并导致其平均水平发生显著变化。这些事实与摄食后期的海鲈鱼的预摄食活动和增加的食欲有关，并对鱼类养殖具有重要意义。
