Use of pulp cavity/tooth width ratios to determine the age of adult wild dogs (Canis lupus dingo, C. l. domesticus and their hybrids)

Paper

Kershaw, K., Allen, L., Lisle, A. and Withers, K.. 2005. "Use of pulp cavity/tooth width ratios to determine the age of adult wild dogs (Canis lupus dingo, C. l. domesticus and their hybrids)." Cree, Alison (ed.) 22nd Annual Conference of the Australian and New Zealand Society for Comparative Physiology and Biochemistry (ANZSCPB 2005). Dunedin, New Zealand 09 - 11 Dec 2005 New Zealand.
Paper/Presentation Title

Use of pulp cavity/tooth width ratios to determine the age of adult wild dogs (Canis lupus dingo, C. l. domesticus and their hybrids)

Presentation TypePaper
AuthorsKershaw, K. (Author), Allen, L. (Author), Lisle, A. (Author) and Withers, K. (Author)
EditorsCree, Alison
Journal or Proceedings TitleANZSCPB Proceedings, v. 22
Journal Citation22, p. 57
Number of Pages1
Year2005
Place of PublicationNew Zealand
ISBN0473107198
Web Address (URL) of Paperhttp://anzscpb.curtin.edu.au/
Conference/Event22nd Annual Conference of the Australian and New Zealand Society for Comparative Physiology and Biochemistry (ANZSCPB 2005)
Event Details
22nd Annual Conference of the Australian and New Zealand Society for Comparative Physiology and Biochemistry (ANZSCPB 2005)
Event Date
09 to end of 11 Dec 2005
Event Location
Dunedin, New Zealand
Abstract

Determining the age of wild dogs destroyed in control programs is useful management practice. We compared the
pulp cavity: tooth width ratio measurement and ratio calculation of the Thomson and Rose (TR) method to that of
the Knowlton and Whittemore (KW) method on upper and lower canine teeth from a CSIRO collection of 68
skulls. The skulls were from mixed gender, known-age wild dogs ranging in age from 9 months to 13 years and
reared at either Alice Springs or Canberra. The relationships between age and pulp cavity ratios for both TR and
KW methods were significant (p=0.0001). The KW ratios exhibited stable error variance and normal distribution,
whereas the TR ratios exhibited heteroscedasity in error variance. Significant differences in KW pulp cavity ratios
were detected between upper and lower jaw teeth (p<0.0001) and gender (p=0.01) but not geographic origin. The
KW method of calculating pulp cavity as a proportion of tooth width measured 15 mm from the root tip and
averaged over both upper canines, is the more accurate of the two methods for estimating the age of adult wild
dogs.

Keywordswild dogs; dingoes; age; pulp cavity: tooth width ratio
ANZSRC Field of Research 2020310907. Animal physiological ecology
300902. Veterinary anatomy and physiology
Public Notes

Abstract 78. Conference publication consists of only the abstracts of papers presented at the conference.

Byline AffiliationsDepartment of Biological and Physical Sciences
Department of Natural Resources and Mines, Queensland
University of Queensland
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