FISHERY BULLETIN: VOL. 69. NO. 3 



Table 1. — Fecundity data for 17 female hake taken at Station J-45-13 (lat 26°07' N, 

 long 113°07' W) January 11, 1970. 



Standard 

 lengfh 



Weight 



Gonad 



weight 



Gonad 

 index 



Advanced eggs 



Size rang© 



Eggs per 

 gram of fish 



Table 2.— Fecundity data for 11 female hake taken at Station J-45-27 (lat 28°44' N, 

 long 115°15' W) January 16, 1970. 



Standard 

 length 



Weight 



Gonad 

 weight 



Gonad 

 index 



Advanced eggs 



Size range 



Number 



Eggs per 

 gram of fish 



The mean number of advanced eggs per gram 

 of fish is 229 for sample J-45-13, 243 for sample 

 J-45-27, and 192 for the Cohh 1963 samples. 

 Owing to the great range of individual values 

 in each of the samples, there is no significance 

 in the differences between the means. The mean 

 for the 50 fish in the three samples is 216 eggs 

 per gram of fish. The standard error of the 

 mean is 15 eggs or about l'''r . In spite of some 

 rather low fecundities, the distribution of eggs 

 per gram of fish approximates a normal distri- 

 bution indicating that these low counts are with- 

 in the limits of expected variation. 



The low counts apparently did not result from 

 partial spawning of the advanced mode because 

 they were found in fish that were not yet ripe. 



RATIOS 



To obtain estimates of the numbers of ad- 

 vanced eggs in the hake ovary, first about 100 

 yolked eggs in the sample were measured in 

 order to delimit the distributions of advanced- 

 and small-yolked eggs. Then the additional ad- 

 vanced-yolked eggs in the weighed sample were 

 counted. An estimate of the numbers of small 

 eggs was obtained from the ratio of large to 

 small eggs in the measured frequency distribu- 

 tion, but' because this estimate is based on rel- 

 atively few eggs it is less accurate than the esti- 

 mates of advanced eggs. Estimates of the num- 

 bers of small eggs per gram of fish ranged from 



582 



