BEACHAM: VARIABILITY IN SIZE AND AGE OF ATLANTIC COD 



Male 



0) 



o 

 o 



c 



U 



i_ 



a. 



100 



80 

 60 - 

 40 - 

 20 

 



1959- 64 

 n = 958 



100 



20 30 40 50 60 70 80 90 

 1965 -69 



20 30 40 50 60 70 80 90 

 1965-69 



20 30 40 50 60 70 80 90 



20 30 40 50 60 70 80 90 



100 -, 1970 - 7i 



n = 865 

 80 - 



60 



40 



20 



20 30 40 50 60 70 80 90 



1975-79 

 n =761 



i — 

 20 30 40 50 60 70 80 90 20 30 40 50 60 70 80 90 



Length (cm) Length (cm) 



FIGURE 7. — Maturity ogives for Atlantic cod caught during Canadian groundfish surveys in Subdivision 4Vs, 1959-79. 



311 



