双棘黄姑鱼早期发育阶段的摄食习性与生长特性

The feeding habits and the growth of Nibea diacanthus in the early developmental stage

2002年5-6月，在集美大学水产学院水产试验场，采用生态学方法对人工培育的双棘黄姑鱼（Nibea diacanthus（Lacpde））仔、稚、幼鱼的摄食习性与生长特性进行分析。结果表明，在人工培育条件下，双刺黄姑鱼仔、稚、幼鱼的摄食率达93．1％，摄食量占体质量的4．09％～21．07％，日摄食量占体质量的23．67％～57．24％；摄食具明显的昼夜节律，黄昏为摄食高峰。摄食量与体质量的关系式为y=0．1267x^0.7878，全长与日龄的关系式为L=1．8603e^0．0723D体质量与日龄的回归方程为M=0．0203e^0.2484D.全长与体质量的回归方程为M=0．0024L^3.4633。

An ecological method was adopted to study the feeding habits and growth of larval, juvenile and young Nibea diacanthus during May to June 2002. Based upon the determination of 170 individuals, the percentage of stomaches with food in the larval, juvenile and young fish was 93.1% under the artificial rearing conditions. The feeding amount made up 4.09%-21.07% of their body mass and the diet feeding amount made up 23.67%-57.24%. The rhythm of feeding intensity was highly different during the day and night, with the higher feeding intensity being at 16：00 p.m. It appears that the rhythm was characterized by the twilight feeding. The young fish feed in the darkness of night, but the larvae seldom do. The time for feeding from empty to full in stomach, the time for digesting food from full to empty and the time from nothing in stomach to death spent by the fish were reported in this paper. The relationship between the feeding amount and the body mass is expressed as y= 0.126 7x^0.7878, that between the total length and day age is L =1.860 3e^ 0.0723D, that between the body mass and day age can be expressed by M=0.020 3e ^0.2484D and that between the total length and body mass is M= 0.002 4L^3.463 3. （