河川沙塘鳢仔、稚、幼鱼的发育阶段及生长的研究

Studies on the Developmental Stages and Growth of Larval Juvenile and Young Dark Sleeper (Odontobutis Potamophila)

探讨了河川沙塘鳢仔、稚、幼鱼发育阶段的划分，并描述了各发育阶段的主要特征。测定仔、稚、幼鱼标本２３２尾，经数理统计分析，确定河川沙塘鳢仔、稚鱼的日龄与全长呈直线关系，日龄与体重呈指数函数关系，全长与体重呈幂函数关系。全长与体重的曲线回归方程为：Ｗ＝３．６６１０×１０－３Ｌ３．４６７０，ｂ＞３，为异速生长。

The paper deals with the d vision of the developmental singes of Odontobutis potamophial, and describes the main characters of far val,juvenile and young fish stages. Relationships between total length.weight and age as well as the relationship between total length and weight are determined from the calculation based on the measurement of 232 individuals of larval juvenile and young fish. The total length-age relationship falls on a straight line, but the weight-age relationship and total lensth-weisht relationship are that of exponential function. The total length-weight relationship is described by: W=3. 661 0 × 10-3 L3. 4670, b=3. 4 6 70 (> 3 ), indicating that growth is allometric.