Problem

Problem

1. Estimate Y/R and calculate FMSY, MSY/R, MSB/Bv, MSB/R for a given species using the following parameters for various values as follows for various values of F

K = 0.35/yr, Tc = 1.01/yr, To = 0.21/yr, M = 1.1/yr, Tr = 0.5/yr, W ¥ = 300gm,

F = 0.5,0.7,1.3,2.3,3.2,3.6, Find out Y/R, 12B/R'> and B/R as % of BV.

Bv = 22.4

Calculation for F = 0.5

a) Calculate Y/R

Y/R = F.exp [-M* (Tc-Tr)]* W ¥ * 121-Z-3sZ+K+3s2Z+2K-s3Z+3K'>

S = exp * [-K*(Tc=T0)]

b) To calculate 12B/R'>

12B/R'> = exp[-M*(Tc-Tr)]* W ¥ * 121-Z-3sZ+K+3s2Z+2K-s3Z+3K'>

Y/R = F* 12 B/R'>

Tabulate the readings for different values of F

F (x axis)

Y/R (g/recruit)

(y axis)

B/R (g/recruit)

B/R as % of Bv

0.5

0.7

1.3

2.3

3.2

3.6

Last modified: Thursday, 28 June 2012, 9:27 AM