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  • Distribution and impacts of Tasmanian devil facial tumor disease

    Author(s)
    McCallum, Hamish
    Tompkins, Daniel M
    Jones, Menna
    Lachish, Shelly
    Marvanek, Steve
    Lazenby, Billie
    Hocking, Greg
    Wiersma, Jason
    Hawkins, Clare E
    Griffith University Author(s)
    McCallum, Hamish
    Year published
    2007
    Metadata
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    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 ...
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    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.
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    Journal Title
    EcoHealth
    Volume
    4
    Issue
    3
    Publisher URI
    http://www.ecohealth.net/
    DOI
    https://doi.org/10.1007/s10393-007-0118-0
    Subject
    Ecology
    Veterinary sciences
    Publication URI
    http://hdl.handle.net/10072/27774
    Collection
    • Journal articles

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