Читать книгу British Seals - H. R. Hewer - Страница 8

1. External features of seal and sea-lion

2. Limb-bones of seal and fur-seal

3. Skulls of seals (grey and common) and of sea-lion

4. Side view of pinnipede body

5. Bradycardia in seal, porpoise and manatee

6. Kidneys and posterior vena cava in seals

7. World distribution of the grey seal

8. The origin of the three populations of grey seals

9. Distribution of grey seals in British waters – recorded sightings

10. Distribution of grey seals in British waters – breeding areas

11. External differences between grey and common seals and between bull and cow grey seals

12. Jaws and teeth in grey and common seals

13. Growth and maturation of the os penis

14. The os penis index

15. Distribution by age of cow and bull grey seals

16. The male genitalia of the grey seal

17. Growth and maturation of the testis in the grey seal

18. Variations during the year in adult testicular weights in the grey seal

19. The female genitalia of the grey seal (adult)

20. The female genitalia of the grey seal at birth

21. Foetal growth rate in the grey seal

22. Counts of grey seals on West Hoyle Bank and on the Farne Islands

23. Counts of grey seals on West Hoyle Bank, 1951–56 and 1966–70

24. Early stages in territory formation on Shillay

25. Daily pupping rates for Ramsey Island, North Rona, Staple Island and Brownsman

26. Daily pupping rates in neighbouring rookeries

27. Breeding sites on Ramsey Island

28. Breeding sites on Eilean nan Ron and Ghaoidmeal

29. Breeding sites on Shillay

30. Breeding sites on North Rona

31. The Outer Farne Islands

32. Breeding sites on the Farne Islands

33. Different types of social arrangements in different groups of grey seals

34. The grey seal pup in the first four weeks

35. Bull territories on Shillay

36. Types of marker used on grey seal pups

37. Recoveries of young marked grey seals

38. Growth rates in grey seal pups

39. World distribution of common seals

40. Distribution of common seals in British waters – recorded sightings

41. Distribution of common seals in British waters – breeding areas

42. Rare species of pinnipede in British waters – ringed seal, harp seal and bearded seal

43. World distribution of ringed seals

44. World distribution of harp seals

45. World distribution of bearded seals

46. Rare species of pinnipede in British waters – hooded seal and walrus

47. World distribution of hooded seals

48. World distribution of the walrus

49. Numbers of pups born on the Farne Islands, 1956–70

50. Maximum counts and numbers of pups born on the Farne Islands, 1956–68

51. The Farne Islands

52. Average monthly counts on the Farne Islands, 1956–68

53. World distribution of Phocidae

54. World distribution of Otariidae and Odobænidae