Fish Population Dynamic and Stock Assessment

3.1.3.6. von Bertalanffy’s growth equation

Length based von Bertalanffy’s growth equation

Lt =$$L_\infty$$ [1 - exp (-K*(t – tₒ) ] .............................................(5)

$$L_\infty$$ = Asymptotic length

K = Growth coefficient or curvature parameter

to = Initial condition parameter or arbitrary origin of growth

(tₒ = should be read as ‘t’ Zero).

e = Base of natural logarithm

t = time

Weight based von Bertalanffy’s growth equation

W (t) =$$W_\infty$$ [1 – exp (-K*(t – tₒ)] 3......................................(6)

$$W_\infty$$= Asymptotic weight

K, tₒ and e and t are defined as above (Refer equation 5)