9 



- N = 



3710 









19 



7 



3 





8 



,T" 











□ NON-SPAWNER 



7 



- 



- 



| FEMALE 

 M MALE 



uj 6 



- 





_r 





u 









z 5 



- 







LU 









Q£ 









<* A 



Z> 4 





Tn 



u 









u 3 



— 













^2 









1 









J _ — — -^ 



10 15 20 25 30 35 40 45 

 LENGTH. CM 



N=3551 



1974 



] NON-SPAWNER 

 I FEMALE 



MALE 



20 25 30 

 LENGTH CM 



Figure 9.— Seved length frequency data from combined monthly samplings of the commercial bloodworm catch col- 

 lected between April and September of each year (1973-76). 



32 



