Page 



30 



29. Estimated number of yearling male seals, year classes 1961, 1962, and 1964, 



Pribilof Islands, Alaska 



30. Age composition of territorial male seals killed for study and mature male seals 



found dead, St. Paul Island, 1965 -^l 



31. Rate at which territories were re-established in areas where territorial male seals 



were killed, St. Paul Island, 1965 32 



32. Means and ranges of measurements of territorial male seals, St. Paul Island, 1965. . 32 



33. Percentage of genital tracts with a corpus luteum and with an implantation chamber, 



by date of collection 37 



34. Nunnber of female seals showing evidence of implantation (I) and no evidence (NI), by 



collecting date and age 37 



35. Accuracy of identification of placental scar 38 



36. Frequency of dianneters of uterine horns in fur seals, by month 38 



37. Errors in assigning ages of male fur seals from whole canine teeth 39 



38. Errors in assigning ages of male fur seals from sectioned canine teeth 39 



39. Assigned and corrected number of male seals of each age killed and the percentage 



errors in assigned ages, Pribilof Islands, Alaska, 1966 39 



40. Errors in assigning ages of female fur seals from whole canine teeth 40 



41. Errors in assigning ages of female fur seals from sectioned canine teeth 40 



42. Pregnancy rates deternnined from Japanese and United States age determinations of 



fur seal teeth, by age. United States pelagic collection, 1964 42 



43. Imnnobilizing trials with succinylcholine, St. Paul Island, 1966 43 



44. General formula and ingredients for artificial seal milk, St. Paul Island, 1 July to 



4 August 1966 44 



45. Distribution of nitrogenous connpounds in fur seal milk by percentage of total 



nitrogen 4^ 



46. Gross composition of fur seal milk, average of six samples collected in 1963-66, 



St. Paul Island 47 



47. Age and sex, by month, of fur seals collected pelagically by the U.S.A. off 



California in 1966 59 



48. Age and sex of fur seals collected pelagically by the U.S.A. off California by nnonth , , (,0 



49. Tag recoveries from fur seals collected pelagically by the U.S.A. off California in 



1966 60 



50. Number of female seals collected pelagically by the U.S.A. in the eastern Pacific and 



(in parentheses) percentage pregnant, 1958-66 (,2 



51. Number and percentage of fur seals collected pelagically by the U.S.A. off 



California in 1965 and 1966 with algae or barnacles growing on guard hairs 63 



52. Stonnach contents of fur seals collected pelagically by the U.S.A. off California, 1966. 65 



Appendix A Tables 



1. Age classification of male seals killed on St. Paul Island, 7 July to 5 August 1966 ... 70 



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



5 August 1966 71 



3. Age classification of male seals killed on St. George Island, 6 July to 5 August 1966 . 72 



4. Cumulative age classification of male seals killed on St. George Island, 6 July to 



5 August 1966 72 



5. Dead pups counted, by rookery, Pribilof Islands, Alaska, 1941 and 1948-66 73 



6. Dead pups counted, by rookery sections, St. Paul Island, 1966 75 



7. Number of fur seal pups that died of different causes. Reef Rookery study area, 



St. Paul Island, 28 June to 22 August 1966 76 



8. Length and weight of dead fur seal pups by cause of death. Reef Rookery study area, 



St. Paul Island, 1966 76 



9. Distribution of secondary causes of death among primary causes of death of pups. 



Reef Rookery study area, St. Paul Island, 28 June to 22 August 1966 76 



10. Counts of harem and idle males, by rookery, Pribilof Islands, Alaska, 1966 77 



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



1943-66 78 



12. Counts of harem and idle males, by rookery sections, St. Paul Island, 1966 79 



13. Mean weights of handled and unhandled pups, St, Paul Island, 30 August 1966 80 



14. Pups tagged and marked, Pribilof Islands, Alaska, 1941, 1945, 1947-49, and 1951-66 . 81 



15. Pups tagged and marked, St. Paul Island, 15 September to 3 October 1966 82 



16. Pups tagged and marked, St. George Island, 25-26 August 1966 83 



