鄱阳湖黄颡鱼生物学研究

本文对翻阳黄颡鱼种内性状变异，食性，年龄和生长，成熟系数，周年变化，繁殖力等生物学特性进行了研究，为进一步利用和增养殖黄颡提供了理论依据。

A STUDY ON THE BIOLOGY OF PSEUDOBAGRUS FULVIDRACO IN POYANG LAKE

Pseudobagrus fulvidraco is one of the small economic fishes in Poyang Lake and other waters in Jangxi Province.The biological investigation was made on the fish in Poyang Lake with reference to intraspecific variation of the morphometric character,ingredient and emergence rate of the food.age and growth,the change of maturity coefficient in annual cycle,reproduction capacity,etc.587 specimens had been examined from 1986 to 1994.This paper provide a theoretical basis for the utilizing and increase in natural resource of Pseudobagrus fulvidraco. D.2,6-7;A.18-22;P.1,5-7;V.1,5;C.28-31.Gill rakers 4-6+10-12 on outer row of the first arch. Chief food for adult is shrimps,small benthic fishes and smails.Relationship between body length and weight of Pseudobagrus fulvidraco are represented by the following formula: W(female)=0 0463L 2 6111 W(male)=0 02559L 2 870963 This fish Produces 1134-12412 eggs,54-80 7 eggs per gram body weight.Relationship between fecundity and body length is indicated by the exponential equation:F=2 324L 2 8712497