Abstract: Body weight and standard length of 30-40 individuals randomly sampled from each of 8 full-sib families of largemouth bass Micropterus salmoides were measured per month(from 1 month to 7 months)in order to understand the growth and development rules.The growth data were analyzed and fitted with three kinds of nonlinear models(Gompertz,Logistic,and Von Bertalanffy)and the power growth model was performed to find the relationship between body weight and standard length.Results showed that all the growth curves were appropriately fitted with three models,but the Logistic had the best goodness-of-fit of growth curve.Analysis of the fitting parameters of the Logistic revealed that the inflection point month of body weight and standard length were 5.77 and 4.95 respectively,and the inflection point of weight and standard length were 146.35 g and 13.75 cm,respectively.The power growth model also had a better effection on fitting the relationship between body weight and standard length W =0.076 L2.650(R2=0.998),which will help to know the early growth and development rules of largemouth bass and to supply guideline to feeding and selected breeding.
2011, Vol. 26 
