Page 



TABLES 



1. Kill of male seals, by year class, Pribilof Islands, Alaska, 1947-63 3 



2. Dates at which various kill levels of male seals were reached and the corresponding 



percentage age classification, St. Paul Island, 1954-65 4 



3. Cumulative number of male seals killed, St. Paul Island, 1955-65 5 



4. Kill of female seals, by year class, Pribilof Islands, Alaska, 1939-64 9 



5. Percentage age composition of female seals sam.pled from the kills, Pribilof Islands, 



Alaska, 1958-65 10 



6. Summary of tagged and lost-tag seals recovered, by age and sex, Pribilof Islands, 



Alaska, 1965 12 



7. Tag recoveries in 1965 from seals selected and tagged as yearlings, Pribilof Islands, 



Alaska 13 



8. Summary of Soviet tags recovered from the kill, Pribilof Islands, Alaska, 1965. ... 13 



9. Summary of data from tagging of yearlings, St. Paul Island, 1965 14 



10. Estimates of the pup population based on tag recoveries from males, year classes 



1960-63, Pribilof Islands, Alaska 16 



11. Estimates of the pup population based on tag recoveries from 3- and 4-year-old 



males, year classes 1958-62, Pribilof Islands, Alaska 16 



12. Estimates of the pup population based on tag recoveries from 3- and 4-year-old 



males, by 5-day periods, year classes 1961-62, Pribilof Islands, Alaska 16 



13. Estimates of the pup population based on tag recoveries, year classes 1951-63, 



Pribilof Islands, Alaska 17 



14. Estimates of the pup population based on tag recoveries from females, year classes 



1960-62, Pribilof Islands, Alaska 17 



15. Estimates of the yearling male population based on tags recovered fronn seals se- 



lected and tagged as yearlings, year classes 1961-62, Pribilof Islands, Alaska. . . 18 



16. Estimates of the pup population based on marked-to-unmarked ratios obtained by 



sampling groups of 25 after shearing, year class 1965, St. Paul Island 18 



17. Estimates of the pup population based on marked-to-unmarked ratios obtained by 



sampling groups of 100 after shearing, year class 1965, St. Paul Island 19 



18. A comparison of counts and estimates of the pup population on four rookeries, year 



class 1965, St. Paul Island 19 



19. Estimates of the pup population based on n-iarked-to-unmarked ratios obtained by 



sampling live pups after shearing, year class 1965, St. Paul Island 20 



20. Estimates of the pup population at the time of shearing or tagging, from nnarked-to- 



unmarked ratios, year classes 1961-65, St. Paul Island 21 



21. Sealskins collected for experimental use, St. Paul Island, 1958 and 1961-65 22 



Appendix A tables 



1. Data for the regression of percentage of the kill from a year class at ages 3 and 4 



taken at age 3 on date of termination and median date of the kill at age 3, year 

 classes 1947-61, St. Paul Island 27 



2. The kill of 3- and 4-year-old males and mean air temperature, year classes 1950-61, 



St. Paul Island 27 



3. Mean weight of untagged male pups and kill of 3-year-old males from the year class, 



St. Paul Island, 1957-62 29 



4. Predictions of the kill of males in 1966, by age, Pribilof Islands, Alaska 29 



5. Comparison of forecasted and actual kills of males, 1961-65 30 



Appendix B tables 

 Data on males: 



6. Age classification of male seals killed on St. Paul Island, 7 July to 9 August 1965 . . 31 



7. Cumulative age classification of male seals killed on St. Paul Island, 7 July to 



9 August 1965 32 



8. Age classification of male seals killed on St. George Island, 7 July to 6 August 1965 33 



9. Cumulative age classification of male seals killed on St. George Island, 7 July to 



6 August 1965 33 



10. Counts of harem and idle bulls, by rookery, Pribilof Islands, Alaska, 1965 34 



11. Counts of harem and idle bulls, by island, Pribilof Islands, Alaska, 1911-41 and 



1943-65 35 



