CONTENTS 



Page 



1. Effect of fishing on the population, its biomass, and its age structure.... 1 



2. Numerical computations of the effects of fishing on the growth rate 



of biomass and on the spawning stress mortality 3 



3. Some possible effects of fishing on recruitment and consequent changes 



in growth rate and in biomass age structure 10 



4. References 15 



Appendix: Computation of spawning stress (or senescent) mortality 



and subsequent derivation of long term mean age composition of 



fully exploited portion of population 16 



