Fishery Bulletin 98(1) 



of mature males were about 10-20 mm greater in the portion of large mature females was much higher at 



southern region than those in the northern region. 47-49°S (Fig. 7) than at 45-47°S (Fig. 4). After the 



During the first 10-day period of February, the pro- second 10-day period of February, the opposite situa- 



Females 



Jan, H 



100 160 2O0 2S0 aOO 300 400 



Jan, M 



no 160 200 260 aOO 360 400 



Feb, I 



it • 



100 160 200 260 900 360 4O0 



Feb, N 



100 160 200 260 300 360 400 



Feb, HI 



100 160 200 260 300 380 400 



Mantle length (mm) 



Males 



Jan. I 



no I6O 200 260 300 360 400 



Jan,  



wo 160 200 260 300 360 400 



Feb, I 



no 160 200 260 900 960 400 



Feb, N 



no I60 200 260 300 360 400 



Feb, III 



no 160 200 260 300 960 



Mantle length (mm) 



Age structure 



Jan, n 



Jan, HI 



Feb, I 



Feb, n 



^ mn{ 



Fab, III 



Hatching month 



Figure 4 



Length-frequency compositions of immature (dotted line), maturmg (solid line) and mature (bold solid line) squid and hatching month 

 compositions (age structures) of females (black bars) and males (dashed bars) of ///t'.v argenliniia m the fisher\- region of 45-47°S outside 

 the EEZAin January-February 1991. Number of males in parentheses. 



