Wilson et al.: Geographic variation among age-0 Theragra chalcogramma 



217 



useful supplement to abundance distribution data (Beu- 

 tel et al., 1999). 



This study enabled us to conclude that Chiniak Bay 

 is particularly well suited for rearing pollock probably 

 because of influxes of zooplankton. It remains to be 

 seen if Chiniak Bay contributes relatively high num- 

 bers of recruits, or if other counteracting factors such 

 as predation exist. Nevertheless, we have demonstrated 

 that differences among juvenile pollock exist at meso- 

 geographic scales and that these differences are useful 

 for inferring how specific areas might relate to the 

 population dynamics of walleye pollock. 



Acknowledgments 



R. Brodeur provided the initial impetus for this study. 

 P. Munro and D. Somerton accommodated our request 

 to share ship time. The captain and crew of the NOAA 

 ship Miller Freeman helped make our at-sea operations 

 efficient and pleasurable. M. Busby assisted with field 

 operations. We gratefully appreciate the comments of 

 many people: K. Bailey, J. Napp, A. Stoner, S. Syrjala, 

 N. Bartoo, the AFSC Publications Unit, and several 

 anonymous reviewers. 



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