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Changes in spatial organization following an acute epizootic: Tasmanian devils and their transmissible cancer

Citation

Comte, S and Carver, S and Hamede, R and Jones, Menna, Changes in spatial organization following an acute epizootic: Tasmanian devils and their transmissible cancer, Global Ecology and Conservation, 22 Article e00993. ISSN 2351-9894 (2020) [Refereed Article]


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Copyright Statement

Copyright 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license

DOI: doi:10.1016/j.gecco.2020.e00993

Abstract

Epidemiological studies commonly monitor host population density but rarely account for how transmission dynamics might be influenced by changes in spatial and social organization that arise from high mortality altering population demography. Devil facial tumour disease (DFTD), a novel transmissible cancer, caused almost 100% mortality of its single host, the Tasmanian devil, and a >90% local population decline since its emergence 20 years ago. We compare size and overlap in home ranges in a devil population before and 15 years after disease outbreak. We used location data collected with VHF tracking collars in 2001 and GPS collars in the same area in 2015 and 2016. Density of adult devils, calculated from live trapping data in the same years, show a strong decrease following the disease outbreak. The decline in density was accompanied by a reduction in female home range size, a trend not observed for males. Both spatially explicit population modelling and animal tracking showed a decrease in female home range overlap following the DFTD outbreak. These changes in spatial organisation of the host population have the potential to alter the local transmission dynamic of the tumours. Our results are consistent with the general theory of sex-biased spatial organization mediated by resource availability and highlight the importance of incorporating spatial ecology into epidemiological studies.

Item Details

Item Type:Refereed Article
Keywords:Tasmanian devil facial tumour disease, DFTD, spatial organisation, home range, movement, epidemiology, GPS/VHF tracking, infectious disease, spatial ecology, transmissible cancer
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Behavioural ecology
Objective Division:Environmental Management
Objective Group:Terrestrial systems and management
Objective Field:Terrestrial biodiversity
UTAS Author:Comte, S (Mr Sebastien Comte)
UTAS Author:Carver, S (Dr Scott Carver)
UTAS Author:Hamede, R (Dr Rodrigo Hamede Ross)
UTAS Author:Jones, Menna (Professor Menna Jones)
ID Code:142318
Year Published:2020
Web of Science® Times Cited:4
Deposited By:Zoology
Deposited On:2021-01-07
Last Modified:2021-03-03
Downloads:2 View Download Statistics

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