TABLES 



No . Page 



1. Kill of male seals, by year class, Pribilof Islands, Alaska, 1947-61 4 



2. Kill of 3- and 4-year-old male seals at various dates, St. Paul Island, 1954-63 5 



3. Cumulative number of male seals killed, St. Paul Island, 1955-63 6 



4. Harem and idle bull counts, by rookery, Pribilof Islands, Alaska, 1963 7 



5. Countsof harem and idle bulls, East Rookery, St. George Island, 6 July to l6Augustl963 8 



6. Kill of female seals, by year class, Pribilof Islands, Alaska, 1939-62 9 



7. Percent age composition of female seals sampled from the kills, Pribilof Islands, 



Alaska, 1958-63 10 



8. Age classification of female seals killed, by source, St. Paul Island, 1963 10 



9. Ovarian activity of 3- and 4-year-old female fur seals, St. Paul Island, 1963 11 



10. Reproductive condition of Soviet-tagged females, St. Paul Island, 1963 12 



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



Alaska, 1963 13 



12. Summary of seals selected and tagged as yearlings in 1961 (M-series) and 1962 



(N-series) and recovered from the kill, Pribilof Islands, Alaska, 1963 14 



13. Summary of Soviet tags recovered from the kill, Pribilof Islands, Alaska, 1963 14 



14. Fur seal pup tagging, Pribilof Islands, Alaska, 1963 15 



15. Selected and known-age yearlings tagged, St. Paul Island, 1961-63 16 



16. Number of seals selected for yearling tagging, by sex and rookery, St. Paul Island, 1963 . , 16 



17. Homing tendency of known-age yearling seals, by sex and rookery, St. Paul Island, 



1963 17 



18. Sex ratios among selected and known-age yearlings, St. Paul Island, Alaska, 1941 and 



1961-63 17 



19. Description of rookery and hauling ground sampling areas surveyed for tagged year- 



ling counts, St. Paul Island, 1963 18 



20. Tagged yearlings counted, by rookery, date, and sex, St. Paul Island, 1963 19 



21. Checkmarks overlooked compared to the number available, Pribilof Islands, Alaska, 



1961-63 20 



22. Tagged male and female seals without checkmarks, Pribilof Islands, Alaska, 1963. . . 21 



23. Summary of double-tagged seals recovered from the kill, St. Paul Island, 1961-63. . . 21 



24. Probability of tag loss among double-tagged seals of both sexes and among double- 



and single-tagged males, St. Paul Island, 1961-63 21 



25. Homing tendency of male and female seals, by age, Pribilof Islands, Alaska, 1963. . . 22 



26. Homing tendency of male and female seals, by rookery, Pribilof Islands, Alaska, 1963 22 



27. Dead-pup counts, Pribilof Islands, Alaska, 1963 23 



28. Tag recoveries from dead pups or yearlings, reported by the public along the Pacific 



coast, 1948-63 23 



29. Dead-pup counts, sample areas, St. Paul Island, 1963 24 



30. Percent of complete rookery dead-pup counts represented by sample-area counts, 



St. Paul Island, 1956-63 24 



31. Estimates of the pup population at time of tagging based on recovery of tagged and 



tag-lost male seals, Pribilof Islands, Alaska, 2 July to 5 August, 1963 25 



32. Estimates of pup population at time of tagging based on recovery of tagged and tag- 



lost 3- and 4-year-old male seals, Pribilof Islands, Alaska, 1958-60 year classes. 25 



33. Estimates of the number of pups born, Pribilof Islands, Alaska, year classes 1951-61. 25 



34. Estimates of the fall pup population from female tag recoveries, Pribilof Islands, 



Alaska, year classes 1958-61 26 



35. Estimates of the fall pup population from marked to unmarked ratios obtained after 



shearing, St. Paul Island, year class 1963 28 



36. Estimates of the number of pups per harem bull, St. Paul Island, 1963 29 



37. Estimates of the numbers of pups based on marked to unmarked ratios obtained 



after tagging in 1961 and 1962 and after shearing in 1963, St. Paul Island, year 



classes 1961-63 29 



38. Mean weight of untagged pups and male return, Pribilof Islands, Alaska, year classes 



1957-59 30 



39. Mean seal pup weights, St. Paul Island, 1963 30 



40. Mean seal pup weights approximately 1 week after tagging, St. Paul Island, 1957-63. . 30 



41. Mean weights and lengths of tagged and untagged 3-year-old male seals, by round, 



St. Paul Island, 1962-63 31 



42. Live-pup counts, St. Paul Island, 1959-63 32 



43. Skins collected for experimental use, St. Paul Island, 1958 and 1961-63 32 



44. Sea lion pup tagging, Walrus Island, 1959-60 and 1963 33 



