Ageing live New Zealand sea lions (Phocarctos hookeri) using the first post-canine tooth

Wildlife Research

Volumn 31, Issue 2, 2004, Pages 177-181

  Childerhouse, S ^a,b   Dickie, G ^b   Hessel, G ^c  

^a DEPARTMENT OF CONSERVATION   (New Zealand)

^b UNIVERSITY OF OTAGO   (New Zealand)

^c MASSEY UNIVERSITY   (New Zealand)

Author keywords

[No Author keywords available]

Indexed keywords

AGE DETERMINATION; ESTIMATION METHOD; PINNIPED; TOOTH;

MAMMALIA; OTARIIDAE; PANTHERA LEO; PHOCARCTOS HOOKERI; PINNIPEDIA; VERTEBRATA;

EID: 2942700153     PISSN: 10353712     EISSN: None     Source Type: Journal    
DOI: 10.1071/WR03006     Document Type: Article

References (26)

1. Anas, R. E. (1970). Accuracy in assigning ages to fur seals. Journal of Wildlife Management 38, 844-852.
2. Arnbom, T. A., Lunn, N. J., Boyd, I. L., and Barton, T. (1992). Aging live Antarctic fur seals and southern elephant seals. Marine Mammal Science 8, 37-43.
3. Bowen, W. D., Sergeant, D. E., and ritsland, T. (1983). Validation of age estimation in the harp seal, Phoca groenlandica, using dentinal annuli. Canadian Journal of Fisheries and Aquatic Sciences 40, 1430-1441.
4. Boyd, I. L., and Roberts, J. P. (1993). Tooth growth in male Antarctic fur seals (Arctocephalus gazella) from South Georgia. Journal of Zoology (London) 229, 177-190.
5. Cawthorn, M. W., Crawley, M. C., Mattlin, R. H., and Wilson, G. J. (1985). Research on pinnipeds in New Zealand. Wildlife Research Liaison Group Review No. 7. Department of Conservation, PO Box 10-720, Wellington, New Zealand. 29 pp.
6. Childerhouse, S. J., and Gales, N. J. (1998). Historical and modern distribution and abundance of the New Zealand sea lion Phocarctos hookeri. New Zealand Journal of Zoology 25, 1-16.
7. Dickie, G. S., and Dawson, S. M. (2003). Age, growth and reproduction in New Zealand fur seals. Marine Mammal Science 19, 173-185.
8. Doubleday, W. G., and Bowen, W. D. (1980). Inconsistencies in reading the age of harp seals (Pagophilus groenlandicus) teeth, their consequences, and a means of reducing resulting biases. North Atlantic Fisheries Organisation Scientifc Council Report 80/XI/160, Serial Number N247. [Available from NAFC, DFO, PO Box 5667, St Johns, Newfoundland, Canada A1C 5X1.] 24 pp.
9. Gales, N. J. (1995). Hooker's sea lion (Phocarctos hookeri) recovery plan. Threatened Species Recovery Plan Series 17. Department of Conservation, PO Box 10-420, Wellington, New Zealand. 28 pp.
10. Gales, N. J., and Fletcher, D. (1999). Abundance, distribution and status of the New Zealand sea lion Phocarctos hookeri. Wildlife Research 36, 35-52.
11. Gales, N. J., and Mattlin, R. H. (1998). Fast, safe, field-portable gas anaesthesia for pinnipeds. Marine Mammal Science 14, 355-361.
12. IUCN (2002). '2002 IUCN Red List of Threatened Species.'
13. Innes, S., Stewart, R. E. A., and Lavigne, D. M. (1981). Growth in northwest Atlantic harp seals Phoca groenlandica. Journal of Zoology (London) 194, 11-24.
14. Laws, R. M. (1952). A new method of age determination in mammals. Nature 169, 972.
15. Laws, R. M. (1953). A new method of age determination in mammals with special reference to the elephant seal (Mirounga leonina Linn.). Falkland Islands Dependencies Survey Scientific Reports 2, 1-11.
16. Laws, R. M. (1958). Growth rates and ages of crabeater seals, Lobodon carcinophagus (Jacquinot & Pucheran). Proceedings of the Zoological Society, London 130, 275-288.
17. Mansfield, A. W. (1991). Accuracy of age determination in grey seal Halichoerus grypus of eastern Canada. Marine Mammal Science 7, 44-49.
18. McCann, T. S. (1993). Age determination. In 'Antarctic seals: Research Methods and Techniques'. (Ed. R. M. Laws.) pp. 199-227. (Cambridge University Press: Cambridge.)
19. McLaren, I. A., and Smith, T. G. (1985). Population ecology of seals: retrospective and prospective views. Marine Mammal Science 1, 54-83.
20. Oosthuizen, W. H. (1997). Evaluation of an effective method to estimate age of Cape fur seals using ground teeth sections. Marine Mammal Science 13, 683-693.
21. Payne, M. R. (1978). Population size and age determination in the Antarctic fur seal Arctocephalus gazella. Mammal Review 8, 67-73.
22. Perrin, W. F., and Myrick, A. C. (Eds) (1980). Age determination of toothed whales and sirenians. Report of the International Whaling Commission (Special Issue 3). 218 pp.
23. Scheffer, V. B. (1950). Growth layers on the teeth of Pinnipedia as indication of age. Science 112, 309-311.
24. Sokal, R. R., and Rohlf, F. J. 1981. 'Biometry.' (W.H. Freeman and Co.: San Francisco.)
25. Stewart, R. E., Stewart, B. E., Stirling, I., and Street, E. (1996). Counts of growth layer groups in cementum and dentine in ringed seals (Phoca hispida). Marine Mammal Science 12, 383-401.
26. York, A. E. (1983). Average age at first reproduction of the northern fur seal (Callorhinus ursinus). Canadian Journal of Fisheries and Aquatic Sciences 40, 121-127.