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



Female 



100 150 200 250 3C0 350 400 



n-1,161 



n-731 



100 150 200 250 300 350 400 



August 



n= 1.190 



100 150 200 250 300 350 400 



September 



100 150 200 250 300 350 400 



100 150 200 250 300 350 400 



Mantle length (mm) 



Male 



"■=741 



100 160 200 250 300 350 400 



July 



100 150 200 250 300 350 400 



August 



n = 838 



100 150 200 250 300 350 400 



September 



n-327 



100 150 200 250 300 350 400 



100 150 200 250 300 350 400 



Mantle length (mm) 



Juvenile 



illh, 



20 30 40 60 60 70 80 90 100 110 120 



20 30 40 60 60 70 



90 100 IW 120 



August 



20 30 40 50 60 70 80 90 100 110 120 



Mantle length (mm) 



immature 

 Maturing 



Figure 5 



Length composition of Berryteuthis magister in the Navarin-St. Matthew region, June-October 1993. 



sections. Laminae were rather quite uniform from 

 the dorsal apex to the broad ventral side. Each lamina 

 consisted of a broad translucent layer and a narrow 

 dark layer. Counting of laminae commenced from 

 the border between the middle and the inner shell 

 layers in the dorsal apex of the section. The width of 



laminae varied greatly along the section. The first 

 35-45 laminae in the dorsal angle of the section usu- 

 ally were narrow: (ca. 3.0-4.0 urn. Fig. 6B). The 

 middle part of the sections was formed by wide, uni- 

 form laminae (ca. 7-9 urn, Fig. 6C), and the last 20- 

 30 peripheral laminae narrowed to 4-5 pm (Fig. 6D). 



