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Fishery Bulletin 91(4), i 993 



Table 1 



Limits on F'„ ta , and F' its) under generalized von Bertalanffy growth. 



A" = 



A' 



Limits on F' mal 

 /T->~ F'=± 



FL 



Limits on F' MI 



A" = 



FL 



K" = lim ( K \ _ I K" 



k -o\ln(/;A" + 1)/ n 



1-g 



n + q 



1-9 



^iisv = 



1-g 

 <? 



1-9 



Fmat values tend to be close over a large portion 

 of parameter space, but that as K" increases, the 

 base model's estimate of F' MSY is more likely to be 

 significantly biased. 



Divergent ages of recruitment 

 and maturity 



As defined by Thompson (1992), all simple dy- 

 namic pool models assume that fish recruit to 

 both the fishery and the mature stock at a single 

 age a r . However, in more complicated dynamic 

 pool models, it is common for the age (or size) of 

 recruitment to the fishery to be treated as a man- 

 agement variable. 



