174 



Fishery Bulletin 101(1) 



eters such as longevity, fecundity, and natural mortality, 

 and estimates of age-dependent fishing mortality 



Acknowledgments 



We thank Ramon Bonfil for providing his silky shark length 

 and age data. We also thank Dennis Lee and Cheryl Brown 

 of the National Marine Fisheries Service Pelagic Observer 

 Program for catch-at-length data. The comments of three 

 anonymous reviewers greatly improved this paper. 



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