NU793 

 APRIL 1973 



15 20 25 



LENGTH ,CM 



, N : 646 

 MAY 1973 



r-| 









iV 



u_ 



9 FEMALE 



| = NON-SPAWNER 



■ 



1 



_n- 





: 



_ _ 





m U ,-n_ _ 



5 10 15 20 25 30 35 40 



LENGTH .CM 



10 



r N 



=533 











9 



8 







1 



1 



JUNE 1973 





- 





L L 



z 

 £ 6 



DC 



3 5 

 u 



O 4 



■ 





S 





3 











2 

 1 







J \ 





: . 



i-n , 



10 15 20 25 

 LENGTH , CM 



30 



35 



Figure 7.— Sexed length frequency data obtained from monthly samplings of 

 the commercial bloodworm catch: (A) 1973, (B) 1974, (C) 1975, (D) 1976. 



12 



-N=699 



ji 





JULY 1973 



11 









10 





u 





9 









8 





r 





U 7 



-£_ 

 S 5 



° 4 



3 

 2 



i- 







V 





1 



' r, 



^ 



10 15 20 25 30 35 

 LENGTH, CM 



z 



O 



11 



-N=634 pi AUGUST ,973 





10 



- ^ 





9 











8 











7 











6 



■ 









5' 



■ 









4 



- 





L 





3 



- 









2 



- 





\h 







V -fin 





10 15 20 25 

 LENGTH, CM 



30 



35 



Z 



3 



u 

 (J 

 O 



13 



-N = 384 







SEPTEMBER 1973 





12 









11 



i- 1 



- 





10 

 9 





n 







8 

 7 

 6 



- 





1 







5 

 4 





\ 





3 

 2 







T_ 







1 



' J 



^n 



. 1 . n. 



10 



15 20 25 

 LENGTH ,CM 



30 35 



40 



23 



