摘要
长吻是长江河流中有较高经济价值的鲶形目鲍科鱼类,共收集肥料325尾,全部材料均通过生物学测定。1989年采用IBM/AX计算机运用Von Bertalanffy鱼类生长方程的BASIC程序进行了重新整理运算。结果表明:龄群有1—6龄组,2—3龄鱼为渔获物的主要成份,占总尾数的54.27％,体长和体重的相关关系式为:W=2.221344×10^(-2)L^(2.828766)。生长曲线,生长速度曲线、生长加速度曲线反映出长吻鮠属均匀生长型,生长的拐点年龄为6.1龄,地外,体长、体重、吻长、全长、体国之间还进行了多元回归。
Leiocassie Longirostris has been a valuable commercial fish in Yangtze River. From 1986 to 1989 We have conducted a Preliminary study on age composition and growth characteristic.325 samples was collected, Age associaion contain 1-6. 2-3 are main part of all samples. The relationship between the body weight and body length can be expressed by the equation:w=2.221344×10^(-2)L^(2.828766).The relationship between the age and the body length and weight and growth rate and acceleration of the growth in length and in weight are given. A turning point of growth curve in weight occures at age 6.1.
出处
《江西教育学院学报》
1990年第2期64-68,共5页
Journal of Jiangxi Institute of Education
