Arkhipkin et al Distribution, stock structure, and growth of Berryteuthis magister 



23 



50 100 150 200 250 300 350 400 450 500 

 Age (d) 



50 100 150 200 250 300 350 400 450 500 

 Age (d) 



200 250 300 



Mantle length (mm) 



50 100 150 200 250 300 350 400 450 500 



Age (d) 



50 100 150 200 250 300 350 400 450 500 

 Age (d) 



50 100 150 200 250 300 350 400 450 500 



Age (d) 



50 100 150 200 250 300 350 400 450 500 

 Age (d) 



50 100 150 200 250 300 350 400 450 500 

 Age (d) 



Figure 1 4 



Growth curves and parameters of Berryteuthis magister. Relationships between (A) mantle 

 length and age for females; (B) mantle length and age for males; (C) body weight and mantle 

 length; (D) body weight and age; (E) daily length-growth rates and age; (F) daily weight- 

 growth rates and age; (G) instantaneous rate of mantle length growth and age; (H) instanta- 

 neous rate of body-weight growth and age. Lines with dots in panels D-H show females; lines 

 with open squares show males. 



obvious at all maturity stages except for spent-stage 

 animals. The difference between these modes was 

 30-40 d. Like the fall-hatched males, almost all fall- 

 hatched mature females were in good condition, with- 



out any pattern of reduction of the gonad, liver, and 

 mantle. Early maturing and late-maturing groups 

 were observed also among summer-hatched females, 

 with a bimodal distribution for spent females (Fig. 15). 



