Zimmermann: Maturity and fecundity of Atheresthes stomias 
607 
W B = 0.843 (W E ) + 1.398, 
where W B = the weight of the blind-side lobe; and 
W F = the weight of the eyed-side ovary lobe. 
All the frequency distributions of the diameter of 
maturing oocytes were unimodal and had a long tail 
on the left. A cubic transform (diameter 3 ) normal- 
ized the distributions. The transformed values of the 
mean diameter of oocytes did not vary significantly 
among positions (anterior, medial, posterior) within 
the same ovarian lobe (two-factor ANOVA, df=2, 
P>0.05) or between lobes (paired £-test, df=9, P>0.05). 
Density of oocytes (count of oocytes per gram of ova- 
rian tissue) also did not vary significantly between 
positions within ovarian lobes (two-factor ANOVA, 
df=2, P>0.05) or among ovarian lobes (paired f-test, 
df=9, P>0.05). Thus samples for total fecundity were 
combined from the different positions and ovarian lobes. 
Total fecundity was significantly related to fish 
length (df=ll, F=125.7, P<0.001, r 2 =0.92) by the 
equation 
