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研究了长江上游泸州地区濑溪河黑尾近红鱼白种群的年龄 (用t表示 )和生长 ,结果表明 :濑溪河黑尾近红鱼白种群年轮形成期在 4— 6月 ,6月是其高峰期 ;其生长特点属于均匀生长类型 ;体长 (用l表示 )与鳞径 (用R表示 )呈线性关系 ;体长与体质量 (用m表示 )相关式为 :m =0 0 0 75 3 2 70 1(r=0 9932 ) ;体长和体质量实测值回归得VonBertalanffy生长方程各参数 :l∞ =44 42 6cm m∞ =15 39 15g k=0 15 3 t0 =- 0 6 2 4龄 ,体质量生长拐点年龄tr =7 112龄 ,拐点体质量 mr =46 6 85 g .黑尾近红鱼白1～ 2龄生长较快 .
The age (t) and the growth of white populations of the black tail near the redtail in the Setai River in the upper reaches of the Yangtze River were studied. The results showed that the formation period of the white population of the red tail whitefish in Setuxi River ranged from April to June, Month is its peak; its growth characteristics are uniform growth type; body length (with l) and the diameter of the scale (with R) showed a linear relationship; body length and body mass (expressed in m) correlation is: m = 0 0 0 75 3 2 70 1 (r = 0 9932). The measured values of body length and body weight returned to Von Bertalanffy equation of growth: l∞ = 44 42 6cm m∞ = 15 39 15g k = 0 15 3 t0 = - 0 The age of turning point of body weight growth was tr = 7121 and the body weight of inflexion point was 466 85 g at 6 2 4 years old.