Table 32. --Number of female seals collected pelagically by the United 

 (in parentheses) percentage pregnant, 1958-67-- 



States in 

 Continued 



the eastern Pacific and 



rates of seals collected off Washington, and 

 those of the combined pelagic collections, vary 

 in the different year classes. The sample sizes 

 are small, however, and the differences are 

 probably not significant. 



Pregnancy occurs in the left and right 

 uterine horn with about equal frequency. Of 

 67 pregnant females collected in 1967, 33 



were pregnant in the left uterine horn and 34 

 in the right. 



The sex ratio among fetuses is about equal 

 in data combined for all years (1958-66) 

 (U.S. Fish and Wildlife Service, Bureau of 

 Commercial Fisheries, 1969). In 1967, the 66 

 fetuses taken included 28 males and 38 

 females. 



40 



