von Bertalanffy Growth Model example 1

I used age, length and weight data of Pacific Ocean perch, Sebates alutus from Zhang (1981) to extract a growth model. Coefficients L_inf and K are estimated 357.7 mm and 0.1625 for Walford method, and 371 mm and 0.1298 for von Bertalanffy method, respectively.
This picture on the right shows the growth model by von Bertalanffy method. The advantage of this method is that t_0 can be obtained simultaneously and utilize all raw data without weighting from the sample size. However, the calculation take longer time than the other method. Microsoft Excel is used.

















revised 0n Apr.2 2007
by Yeongha Jung