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Distribution and impacts of Tasmanian Devil Facial Tumor Disease

Citation

McCallum, HI and Tompkins, DM and Jones, ME and Lachish, S and Marvanek, S and Lazenby, B and Hocking, G and Wiersma, J and Hawkins, CE, Distribution and impacts of Tasmanian Devil Facial Tumor Disease, EcoHealth, 4, (3) pp. 318-325. ISSN 1612-9202 (2007) [Refereed Article]

DOI: doi:10.1007/s10393-007-0118-0

Abstract

The Tasmanian devil, Sarcophilus harrisii, is the largest extant marsupial carnivore. In 1996, a debilitating facial tumor was reported. It is now clear that this is an invariably lethal infectious cancer. The disease has now spread across the majority of the range of the species and is likely to occur across the entire range within 5 to 10 years. The disease has lead to continuing declines of up to 90% and virtual disappearance of older age classes. Mark-recapture analysis and a preliminary epidemiological model developed for the population with the best longitudinal data both project local extinction in that area over a timeframe of 10 to 15 years from disease emergence. However, the prediction of extinction from the model is sensitive to the estimate of the latent period, which is poorly known. As transmission appears to occur by biting, much of which happens during sexual encounters, the dynamics of the disease may be typical of sexually transmitted diseases. This means that transmission is likely to be frequency-dependent with no threshold density for disease maintenance. Extinction over the entire current range of the devil is therefore a real possibility and an unacceptable risk. © 2007 Ecohealth Journal Consortium.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Terrestrial Ecology
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Forest and Woodlands Flora, Fauna and Biodiversity
Author:McCallum, HI (Professor Hamish McCallum)
Author:Jones, ME (Associate Professor Menna Jones)
Author:Hawkins, CE (Dr Clare Hawkins)
ID Code:49711
Year Published:2007
Web of Science® Times Cited:92
Deposited By:Zoology
Deposited On:2007-08-01
Last Modified:2011-10-03
Downloads:0

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