Fish Population Dynamic and Stock Assessment (2+1)

Calculation

1.Based on length

VBGF equation based on length is

$$Lt = L_\infty (1-e^{-K(t-t_0)})$$
Where $$L_\infty$$ = 14, K=1, t_o = - 0.2
When t=0.5
$$Lt_1 = L_\infty (1-e^{-K(t-t_0)})$$
$$ \ \ \ \ = 14 (1-^{-K(t-t_0)})$$
When t=1
$$Lt_2 = L_\infty (1-e^{-K(t-t_0)})$$
$$\ \ \ \ = 14 (1-e^{-1(1-0.2)})$$
When t=2
$$\ \ \ \ = 14 (1-e^{-(1-0.2)})$$
Like wise calculate for other Age groups (t)

2. Based of weight

VBGF equation based on weight

$$Wt = W_\infty (1-e^{-K(t-t_0)})$$
$$\ \ \ \ =14^3 = 2.744$$
$$W_\infty = 2.744$$
When t=0.5
$$2.744 = (1-e^{-1(0.5-(-0.5)})$$
$$Wt_1 = 16.3439$$
Like wise calculate for other age groups (t)