FISHERY BULLETIN: VOL. 84, NO. 4 



Figure 5.— Growth phases for juvenile and adult 

 Chionoecetes tanneri. CPL = Chelar propodus length 

 (mm); CW = Carapace width (mm); AW = Abdomen width 

 (mm). 



200 



E 

 E 



•g 



c 

 <u 

 E 

 o 



£ 50 



*6 



c 



0) 

 v> 



3 



•o 

 o 



Q. 



o 



sz 

 O 



40 



30 



20- 



10 



Adult 



CPL = 1.21 CW - 57.16 



r 2 .91 



Adult 



AW * 0.54 CW - 3.07 jfj 



2 



Juvenile 



CPL = 0.56 CW - 3.37 X / 



/ 



2 X * 



r .97 X / 



/ 

 / 



/ 

 / 



* Juvenile 

 / T 



AW = 0.46 CW - 3.33 



/ , 2 .99 



20 



— i 1 1 — 



30 40 50 



100 



150 



Carapace width mm 



c 

 c 



(D 



(1) 

 O 

 Q) 

 O 



C 



g 

 o 



a> 



E 



3 

 Z 



4- 

 2- 





 4 

 2 

 

 4 

 2 



-i r 



November 1973 

 N = 1 



i — I — r-^| 1 r 



June 1974 

 N=10 



-i 1 r a *T 



i — r 



July 1974 

 N=4 



-i 1 1 1 



N August 1974 



y ' ■■* 



-i r 



January 1975 

 N=14 \ 



in 



T 1 1 1 "  " f "" \> 



March 1975 

 N=3 



-i r 



2 



"1 1 i 1 — "7— 



6 8 10 



Table 1 . — Percent increase in mean carapace width and sex ratio 

 (males %) for successive instars of Chionoecetes tanneri. 



Increase in 



carapace width 



(%) 



48.4 

 35.8 

 31.7 

 43.0 

 36.5 

 36.6 



Carapace Width (mm) 



Figure 6.— Size- frequency histograms representing early juveniles 

 with carapace widths < 9 mm. These samples were collected from 

 stomachs of benthic fish. The dashed line represents the progres- 

 sion of instars through time with first crab stage in June to instar 

 II in August and instar III in January. 



978 



