
Table 11.--Mortality of pups on the Pribilofs in selected years from 
1896 to 1951. 
[Underlined figures are partial counts] 
a a a a eo) 
Percent dead 

Number of Number of Number of pups of those 
Year dead pups living pups pups born born 
1a96/ 11,045 146, 360 157,405 7.0 
19088/ 3,003 38,447 41,450 7.2 
19092/ 3,786 41,978 45,764 8.3 
191 1,743 91,507 93,250 1.9 
19154/ 1,821 101,716 103,527 1.7 
1916 2,482 114,495 116,977 2.1 
1917 3,350 124,174 128,024 3.0 
1918 4,302 138,613 142,915 3.0 
1919 4.834 152,338 157,172 3.1 
1920 4y219 163, 308 167,527 2.5 
1921 43397 172,258 176,655 2.5 
1922 3,223 182,691 185,914 1.7 
1924 5.109 203, 287 208, 396 2.5 
1941-2/ 19,000 421,000 44,0 ,000 4.3 
19190/ 7,989 58,611 66, 600 12.0 
19505/ 54,520 385,480 440 ,000 12.4 
1951: 76 , 300 363,700 440,000 17.3 
1/ From Jordan and others, 1898, part 1, p. 95; 1899, part 3, p. 97; based 
on partial counts. . 
nN 
St. Paul Island only; data from U. S. Bureau of Fisheries, 1909, pp. Al-42. 
The living pups were estimated, not counted. We reduced the published 
value of 50,000 births for the Pribilofs in 1908 to 41,450, representing 
the births for St. Paul only. 
From Osgood, Preble, and Parker, 1915, p. 713; based on complete counts. 
Data for 1915-24 from U. S. Bureau of Fisheries annual reports, Alaska 
fur-seal industry; based on complete counts 1915, 1916, and 1922; 
partial counts other years. 
St. Paul Island only; dead—-pup counts of 1941 with living-pup estimate 
of 1947. 
St. Paul Island, 6 rookeries only; dead-pup count and sample count of 
living pups, 1949. 
St. Paul Island only; dead-pup count of 1950 with living-—pup estimate 
of 1947. 
is ames Island only; dead-pup count of 1951 with living-pup estimate of 
AT. 
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