Table 2.— Results of linear regressions of total length (y) versus otolith length (x) for Sebastes. Measurements are in milli- 

 meters. The F-test was run using the sums squared from the analysis of covariance comparing males and females; * - P = 

 0.05, ** -P = 0.01. 



structed may also show sexually size-dimorphic 

 growth. 



The 13 species with no difference noted between 

 males and females consist primarily of two closely 

 related taxonomic groups (Barsukov 1981). Few 

 growth studies exist for these species. The first 

 group of shallow, nearshore species is represented 

 in this study by S. auriculatus, S. carnatus, S. 

 caurinus, S. chrysomelas, and S. nebulosus. The 

 growth curve for S. chrysomelas is the same for 

 males and females (Zaitlan 1986). The second group 

 is the subgenus Sebastomus (Chen 1971), repre- 

 sented in this study by S. chlorostictus, S. con- 

 stellatus, and 5. rosaceus. Growth curves exist for 

 two members: S. helvomaculatus (Westrheim and 

 Harling 1975) and 5. umbrosus (Chen 1971), which 

 do not show sexual size dimorphism. The indications 

 are relationships of otolith length to total length 

 reflect the age-at-length relationship between the 

 sexes. 



In food-habit studies, otoliths are often found but 

 the sex and length of the fish are not known. Table 

 3 shows regressions for the combined sexes for those 

 occasions when the sex is unknown or when the 

 regressions were not significantly different between 

 the sexes. 



Data analysis for S. entomelas shows a potential 

 to derive estimates of age from otolith lengths (Fig. 

 3). The calculated total lengths for males and 

 females for each 1 mm increment in otolith length 

 are overlaid on the age-length curve (from Lenarz 

 1987). These relationships are species-specific and 



Table 3. — Results of linear regressions of total length 

 (/) versus otolith length (x) for Sebastes for sexes com- 

 bined. Measurements are in millimeters. 



Species of 

 Sebastes 



a 



'y.x 



-53.032 33.159 17.729 



15.124 19.910 24.818 



-39.365 30.573 10.258 



5.099 30.234 26.291 



-18.537 24.113 14.898 



-21.780 28.609 9.020 



-37.484 25.266 13.123 



-27.098 28.104 19.912 



-12.854 22.635 14.020 



-13.564 24.020 12.284 



-6.890 33.113 32.247 



-10.946 26.506 18.158 



-57.996 29.129 17.819 



-30.546 28.868 12.168 



-2.313 22.096 7.353 



-170.108 47.458 46.975 



-53.107 29.967 23.862 



-48.222 30.557 21.002 



-47.070 27.362 23.590 



-56.738 29.365 24.516 



-18.175 29.765 23.204 



32.970 25.181 16.131 



-53.472 33.562 17.179 



-77.089 41.089 59.143 



-85.114 29.411 28.398 



-83.484 22.533 10.908 



-76.233 31.328 31.206 



-32.765 23.399 12.663 



-19.182 25.266 6.961 



-51.013 29.350 18.965 



385 



