Fish Population Dynamic and Stock Assessment

7.1.6. Equation

Y/F = F • exp$$[-M*(TC-Tr)]*W\infty*[1/Z-3S/Z+K+3/S^2/Z+2K-S^3/Z+3K]$$

S = EXP. [-K* (Tc – Tₒ)]

K = Growth coefficient or curvature parameter.

T₀ = Initial condition parameter

Tc = Age at first capture

Tr = Age at recruitment

$$W\infty$$ = Asymptotic body weight

F = Fishing mortality

M = Natural mortality

Z = F + M = Total mortality