| The silver carp and bighead carp of Hongfeng lake in the Guiyang city was used to survey in September to December 2010. The results indicated the age of silver carp and bighead carp was both from 1 to 4, which largely composed of age groups 2. The relationship between the body length and scale radius could be expressed by the equation L 鲢=13.28×R+6.54, L 鳙=13.94×R+6.95. The relationship between body weight and body length can be expressed as W 鲢=0.0275×L2.885, W 鳙=0.0442×L2.695; The growth of body length and body weight of silver carp can be described by the Von Bertalanffy growth equation Lt=80.60[1-e-0.1317(t+0.6899)], Wt=8703.24[1-e-0.1317(t+0.6899)]2.8853, The growth of body length and body weight of bighead carp can be described by the Von Bertalanffy growth equation Lt=96.60[1-e-0.1317(t+0.40784)], Wt=9884.07[1-e-0.1317(t+0.40784)]2.695. |
