西藏察隅河弧唇裂腹鱼年龄与生长特征

Age and growth characteristics of Schizothorax curilabiatus in the Chayu River,Tibet

为研究察隅河流域贡日嘎布曲弧唇裂腹鱼(Schizothorax curilabiatus)的年龄与生长特征,2021年8月在西藏察隅县察隅河支流贡日嘎布曲采集95尾弧唇裂腹鱼,通过耳石进行年龄鉴定,采用Von Bertalanffy生长方程对弧唇裂腹鱼进行生长特征分析。结果表明,弧唇裂腹鱼体长和体重关系呈幂函数,关系为W=4.708×10^(-5)L^(2.7457)。拟合Von Bertalanffy生长方程为:L=260.65[1-e^(-0.096(t+1.805))],W=202.59[1-e^(-0.096(t+1.805))]^(2.7457)。察隅河流域贡日嘎布曲弧唇裂腹鱼属于异速生长,且生长缓慢。

To research the age and growth of Schizothorax curilabiatus in Chayu River.95 individual fishes of Schizothorax curilabiatus were collected from Gongrigabu river in August 2021.The lapillus was used to study the age and growth characteristics,and the growth equation was fitted by using the Von Bertalanffy growth equation.The relationship between body length and body weight of Schizothorax curilabiatus was described as W=4.708×10^(-5)L^(2.7457).The Von Bertalanffy growth equations were:L=260.65[1-e^(-0.096(t+1.805))],W=202.59[1-e^(-0.096(t+1.805))]^(2.7457).Schizothorax curilabiatus belonged to heterogenic growth in Chayu River,and grew slowly.