FISHERY BULLETIN; VOL. 83, NO. 3 



Table 2.— Seasonal regressions of In (gonad volume, mL) on In (total length, mm) in adults of five species 



of Sebastes from northern and central California. 



Table 3.— Comparisons of fat volume between males and 

 females during peak and low fat seasons in five species of 

 Sebastes. If not defined statistically, peak and low seasons 

 were selected on the basis of regression positions. Y, the 

 estimated In (fat volume) at the overall average of In (total 

 length), is presented as an indication of regression position 

 (Fig. 1). If male and female fat regressions differed 

 significantly (P < 0.05) by analysis of covariance, their 

 relative fat volumes are indicated. NS denotes regressions 

 that did not differ significantly. 



Females 



Males 



Species Season 



Season 



Comparison 



S. entomelas 



Peak 



Low 

 S. paucispinis 



Peak 



Low 

 S. goodei 



Peak 



Low 

 S. pinniger 



Peak 

 S. flavidus 



Peak 



Low 



Fall 3.07 Fall 3.09 



Spring 1.82 Spring 1.96 



Fall 2.81 Fall 2.35 



Spring 2.20 Spring 1.99 



Fall 1.98 Summer 1.70 



Spring 0.82 Winter 0.63 



Fall 



2.69 Fall 



2.49 



Fall 2.87 Fall 2.08 



Winter 1.59 Winter 1.12 



o- > 9 

 NS 



9 > o- 

 NS 



9 > o" 

 NS 



NS 



9 > CT 



NS 



Sebastes pinniger 



Cycles of visceral fat volume were poorly defined 

 in S. pinniger. In females, only the summer and fall 

 fat regressions differed significantly, suggesting a 

 peak in fat content during the fall (Fig. 1). In males. 



no two consecutive seasons differed significantly in 

 fat content, and the only two seasons that differed 

 significantly at all were spring and fall (Fig. 1). Thus, 

 males may also have had peak fat content during fall, 

 but their fat cycle was not pronounced. The visceral 

 fat content of males and females did not differ signi- 

 ficantly during their apparent fall peaks (Table 3). 



The ovarian cycle of S. pinniger was also poorly 

 defined in our data. Ovaries increased significantly in 

 volume between spring and summer (Fig. 2). No 

 other seasons differed significantly, but a peak in 

 winter is indicated in Figure 2. In males, gonadal 

 volume increased dramatically from spring to a peak 

 in summer, remained fairly high in fall, and declined 

 in winter (Fig. 2). 



Sebastes flavidus 



Visceral fat volume in female .S. Jlavidtis increased 

 from spring through fall, and then declined in winter 

 (Fig. 1). Ma\e S.Jlavidits exhibited a gradual increase 

 in fat content between spring and fall, followed by a 

 decline to minimal fat levels in winter (Fig. 1). Fat 

 content of females exceeded that of males during 

 their fall peaks, and the difference in fat content dur- 

 ing their winter lows was not significant (Table 3). 



Ovarian volume in S. flavidus showed a pattern 

 similar to most of the rest of the species: an increase 



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