350 

 300 

 250 

 200 

 150 

 100 

 50 

 



35 40 



50 55 60 65 70 75 



FIG. 5 DISTRIBUTION OF BODY LENGTHS OF THE RYUKYU STOCK (WHITE DOTS) AND 

 THE OGASAWARA STOCK (BLACK DOTS). (NORTHEASTERN SEA AREA, TOTAL FOR 

 1934-36 ). HORIZONTAL AXIS IS BODY LENGTH, VERTICAL AXIS IS NUMBER OF FISH 



1 I I I I I 1 1 1 1 1 1 1 — r 



934 



J — I I I I I ' 



200 



150 



100 



50 



16 20 24 28 32 36 40 



FIG. 6. DISTRIBUTION OF CONDITION FACTORS OF RYUKYU STOCK SCHOOLS ( WHITE 

 DOTS ) AND OGASAWARA STOCK SCHOOLS ( BLACK DOTS). THE HORIZONTAL AXIS 

 SHOWS THE CONDITION FACTOR AND THE VERTICAL AXIS SHOWS THE NUMBER 

 OF FISH. 



45 



