Читать книгу Collins New Naturalist Library - H. Hewer R. - Страница 8
FIGURES
Оглавление1. 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
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
30. Breeding sites on North Rona
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
52. Average monthly counts on the Farne Islands, 1956–68
