BERING SEt 



<s? 



=» 



a 



165° 

 POUNDS PER HOUR TRAWLING 

 10-250 



3ERING SEA 



=0. 



Figure 2.— Isotherms in °C and occurrence of (a) yellowfin sole; 

 (b) Alaska plaice; (c) rock sole, 7 July-4 August 1961. 



Table 1. -Observed age and length distribution of male (M) and female (F) yellowfin sole taken in the southeastern Bering Sea in 1961. 



10 



11 



12 



13 



Total 



'Calculated from ungrouped data. 



tern Bering Sea yellowfin and rock sole by Ha- 

 tanaka (1968), Maeda (1969), and Levings (1967), 

 indicate that growth is different for each sex. 



The ages of 12 yellowfin sole (10 female, 2 male) 

 taken 50 miles south of Nunivak Island in the eas- 



tern Bering Sea in August 1959 (Pruter and Al- 

 verson 1962) fall within the range of our observa- 

 tions with some suggestion that the younger fish 

 in their samples are slightly smaller. Maeda (1969) 

 and Hatanaka (1968) derived age-length curves 



921 



