356 



Fishery Bulletin 90(2). 1992 



in female C. arel did a rise in Kn value correspond with 

 a rise in gonadal activity, indicating the spawning 

 period (in January). 



In male C. lida (Fig. 14), the highest Kn peak was 

 seen in January and the lowest value was in February. 

 In females of C. lida (Fig. 14), the highest Kn peaks 

 were seen in January, July, and December, and the 

 lowest value in May. In both sexes of C. lida, a rise 



in Kn value did not indicate the spawning period. 



SIze-at-flrst-maturlty Both sexes of C. arel began to 

 mature after the 140-154mm size-group (Fig. 15). 

 From the 155- 169 mm size-group onwards, percentage 

 occurrence of mature males and females increased 

 steadily. Maturity reached 100% in the 245-259mm 

 size-group in males, and in the 275-289 mm size-group 



