140 



Fishery Bulletin 88(1), 1990 



i . I 1 1 I ii I 1 1 



^» 



XV. /■ 



'6 MAY  2 JUNL 



' I  ' I ' ' I " I ' ' I " I "'■  I " I  



Figure 3 



Distrihutidn of walleye pollock eRf^s 

 sampled in Shelikof Strait by time 

 inlerv-il. 



presumably indicating tliat more dispersed spawning 

 occurs later in the season. Little change in spawning 

 area through the season is indicated from the positions 

 of the centroids. The centroids from the first, third, 



and fiftli time intervals are essentially in the same loca- 

 tion, whereas those from the second and fourth time 

 intervals are further northeast, but in virtually the 

 same locations. The sizes and positions of the ellipses 



