FISHERY BULLETIN: VOL. 84, NO. 4 



Figure 11.— Length-weight relationship of 

 males versus females in L.O. 1981, compared 

 with the data of Fields (1965). 



35 

 30 

 25 



20 



s 15 



h- 

 X 

 CD 



LLI 



LU 



10 



/ Wild Loligo opalescens (Fields. 1965) 

 / W=.0013L 215 



1 Hi 



ob. 



h 1- 



33 40 



L.O. 1981 



Laboratory reared female Loligo opalescens 

 W = .0007 L 2 31 r 2 = 0.88 n = 40 



Laboratory reared male Loligo opalescens 

 W = .0002 L 2 59 r 2 = 0.96 n = 18 



"60~ 



80 1 00 1 20 

 MANTLE LENGTH (mm) 



Figure 12.— Increase in statolith rings with age (L.O. 1982). 

 Closed circles represent ring counts of 55 statoliths from L. 

 opalescens of known-age (21-79 d). Each statolith was counted twice 

 from different photographs. Unclear exposures (16) were not 

 counted. The solid line represents a linear relationship of age and 

 ring numbers. The space between the solid and dashed lines reflects 

 the 5 d of hatching. 



80 r 



70 



30- 



20 



20 30 40 50 60 70 80 

 ACTUAL AGE (DAYS) 



786 



