10 
Fishery Bulletin 106(1) 
some species, where bycatch of smaller, immature mem- 
bers of a population would be protected from harvest. 
Acknowledgments 
This work would not have been possible without the 
assistance of numerous scientists and fishermen who 
have collected data on the trawl surveys of the Gulf of 
Alaska and Aleutian Islands. J. Boldt provided assis- 
tance in the use of the PRIMER software in the data 
analyses. The manuscript was improved with reviews by 
R. Reuter, D. Somerton, M. Wilkins, M. Zimmermann, 
and four anonymous reviewers. 
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