铜钱山水库主要经济鱼类生长特征及其利用的研究

A STUDY ON THE CROWTH CHARACTERISTICS OF ECONOMICAL FISHES AND THEIR UTILIZATION IN TONGQIAN MT.RESERVOIR

据相关分析,铜钱山水库的鲢、鳙、鲤的体长与鳞径均呈直线相关,体长与体重呈指数相关、体重与年龄的关系可用 Von-Bertalanffy 生长方程进行描述;鲢的拐点年龄为4.11龄、鳙为4.42龄、鲤为3.18龄;鲢、鳙鱼可捕的最小规格为3.2Kg,网目规格为172mm。

According to correlative analysis,the correlationship between body-length and diameter of scale of silver carp(Hypophhalmichys molirix)、bighcad carp(Arisichhys nobils)or carp(Cyprinus capio)is linear correlation, but the correlationship between their body-length and body-weight is expo- nential function,and the correlationship among body-length、body-weight and age can be expreesed as Von-Brtalanffy growth equation.The age of turning-point of silver carp、bighead carp and caro is 4.11、4.22 and 3.18, respectively.The standards weight which silver carp and bighead carp can be captured must be 3188.78g,and the standard of web-mest which can be used is 172mm.