FISHERY BULLETIN: VOL. 75, NO. 2 



TABLE 11. — Proportion mature in each length and age-group, for female Pacific ocean perch from the QCS stock. 



Cells with only one observation were not considered. 



Length (cm) 



10 



11 



12 



13 



14 



15 



16- 



Proportion 



mature by 



length 



Number 

 examined 



22 



24 



25 



26 



27 



28 



29 



30 



31 



32 



33 



34 



35 



36 



37 



38 



39 



40 



41 



42 



43 



44 



45 



46 



47 



49 

 Proportion 

 mature 

 by age 

 Number 

 examined 



0.00 



0.00 0.00 0.03 0.13 0.25 0.37 0.64 0.81 0.96 0.97 0.95 

 1 4 35 75 152 143 139 77 116 135 108 110 



TABLE 12. — Proportion mature in each length and age-group, for Pacific ocean perch males from the QCS stock. 



Cells with only one observation were not considered. 



Length (cm) 



10 



11 



12 



13 



14 



15 16 + 



21 



23 



24 



25 



26 



27 



28 



29 



30 



31 



32 



33 



34 



35 



36 



37 



38 



39 



40 



41 



42 



43 



44 



45 

 Proportion 

 mature by 

 age 

 Number 

 examined 



0.00 



0.00 



0.00 



0.00 0.14 29 56 0.89 92 97 98 100 100 100 100 

 5 7 34 94 150 225 230 241 250 217 158 230 



the data in Tables 1 1-13 could be used in weighted 

 linear regression of In [(1/P,) - 1] on/. The weights 

 used fory observations were 1/Var (y) = nPi (1 - 



P/). Regression coefficients obtained were then 

 used to estimate / .50 ( _ a//3) and cr (-1//3). 



These estimates were made by sex for Pacific 



388 



