饥饿和摄食状态下大黄鱼幼鱼的能量收支

Energy Budget of Juvenile Pseudosciaena crocea During Starvation and Satiation

在25±1℃的室温下,测定了在不同摄食水平(1.2%,2.5%m/m)下大黄鱼幼鱼SDA的三个主要参数:SDA总耗能分别为263.4 J/g和467.7 J/g;SDA持续时间分别为8 h和14 h;峰值分别为2.85 mgO2/g.h和3.23 mgO2/g.h.得到了在饱食状态下的能量收支方程:100C=64.5R+20.7G+10.6F+4.2U.饥饿状态下大黄鱼幼鱼排泄能与温度成线性关系,代谢能与温度之间为二次函数关系.同时对饱食状态和饥饿状态下的能量收支进行了比较.

Three main parameters values of SDA of juvenile Pseudosciaena crocea were calculated in different feeding levels((1.2)%,2.5% m/m)at 25±1℃SDA total energy consumed was 263.4 J/g and 467.7 J/g respectively;SDA duration was 8 h and 14 h respectively;the peak of increased metabolism rate of juvenile Pseudosciaena crocea after feeding was 2.85 mgO_2/g·h and 3.23 mgO_2/g·h respectively.Energy budget equation was determined under satiation condition:100C=64.5R+20.7G+10.6F+4.2U.During starvation,excretion energy was positively linearly correlated with temperature,and the energy allocation models changed remarkably with temperature.At last the energy budgets of juvenile Pseudosciaena crocea were compared between during starvation and satiation.