【摘要】 本文研究了镜泊湖细鳞斜颌鲴的年龄与生长，通过对细鳞斜颌鲴鳞片上形成的年轮鉴定和退算，镜泊湖细鳞斜颌鲴的１龄鱼体长为５．５ｃｍ；２龄鱼１２．６ｃｍ；３龄鱼１８．２ｃｍ；４龄鱼２３．１ｃｍ；５龄鱼２６．８ｃｍ；６龄鱼２９．０ｃｍ。体重与体长的相关表达式为：ｗ＝０．０１２８７５１３．０５５３，ｒ＝０．９９９．根据Ｖｏｎ．Ｂｅｒｔａｌａｎｆｆｙ的生长方程理论公式运算，其生长参数：Ｌ∞＝４０．　８ｃｍ；Ｗ∞＝１０２４ｇ；－ｋ＝０．　２４４；ｔｏ＝０．３３２，ｒ＝０．９９８．ｔｉｐ＝５．２龄：Ｔｍａｘ＝１３．７龄。细鳞斜颌鲴在黑龙江水系的生长速度较慢，尤其是１龄，仅５．５ｃｍ和２．４ｇ，无疑越冬能力差，影响群体数量的增加，使之镜泊湖的细鳞斜颌鲴资源不丰的重要因素之一。更多还原

【Abstract】 The paper reports the age and growth of Plagiognathops microlepis(Bleeker)in Jingbohu Lake.The results are as follows:Examining the scales for age determintion and growth study,age composition ranges from 1--6yeas,and back calculated sandard Lengrh were:L1=5.5cm;L2=12.6cm;L3=18.2cm;L4 = 23.1cm;L5=26.8cm;L6 = 29. 0cm.The relationship between body weight and standard length was:W=0.012785L3.0553,r=0.9996.The characters of growth were analysed using Von.Bertalanffy growth epuation,the estimated para-meters were:L∞=40.8cm;W∞=1024g;t0=0.332;k=0.224;r=0.999,Tip=5.3 yeas;Tmax=13.7 yeas.At present,the fisher resources of Plagiognathops microlepis are decreasing in Jingbohu Lake,in the 1980’s,the cateh of marketable-sized fishes is half as much as that in the 1950,s.更多还原