FISHERY BULLETIN: VOL. 82, NO. 3 



30 



ti 



& 20 



o 16 

 E 



I 10 



x 



TABLE 2. — Length at maturity for weakfish, Cynoscion regalis, 

 from 1980 to 1983. 



may 



jun 



jlil 



aug 

 Month 



sep 



oct 



FIGURE 5. — Mean monthly hepatosomatic indices ±95% C.I. of 

 weakfish, Cynoscion regalis, for 1980 with N indicated at each 

 point. 



May 5 



" : 833 



Developing 



.25 .35 .45 .55 .65 



Ova Diameter (mm) 



.75 



.85 



FIGURE 6. — Monthly frequency of oocyte diameters for weakfish, 

 Cynoscion regalis, in the New York Bight for 1980-81. 



60.5% (x 2 = 5.25, xVos = 3.84, n = 119) and 63.8% 

 (X 2 = 7.19, x 2 o.oi = 6.64, n = 94) males at 45 and 55 

 cm, respectively. The sex ratio of combined length 

 intervals above 55 cm had a ratio of 58.5:41.5 



Female 



Male 



TABLE 3. — Sex ratios (female:male) of weakfish, 

 Cynoscion regalis , in the New York Bight. 



Length 1 



Ratio 



15 

 20 

 25 

 30 

 35 

 40 

 45 

 50 

 55 

 60 

 65 

 70 

 75 

 80 

 85 



Total 



'Midpoint of length interval (12.5 to 17.5, etc.; 

 * = significant difference P < 0.05. 

 ** = significant difference P < 01. 

 *** = significant difference P < 0.001. 



which was significantly dominated by females (x 2 

 = 7.45, x 2 o.oi = 6.64, n = 260). 



Regression models indicated that length and 

 weight were equally predictive of fecundity. The 

 relationships between total length or gutted 

 weight, and fecundity were best described by a 

 power curve. The GM functional regression 

 (Ricker 1975) of the log^ transformed data ± stan- 

 dard error of the regression were 



506 



