4.4 Article

Spreading speed of chronic wasting disease across deer groups with overlapping home ranges

期刊

JOURNAL OF THEORETICAL BIOLOGY
卷 547, 期 -, 页码 -

出版社

ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jtbi.2022.111135

关键词

Differential equations; Restricted movement; Landscape heterogeneity; Chronic wasting disease; Spreading speed

资金

  1. Wildlife Management Institute
  2. Boone and Crockett Club
  3. Rocky Mountain Elk Foundation
  4. Genome Canada
  5. Alberta Prion Research Institute
  6. Alberta Agriculture and Forestry through Genome Alberta
  7. Canada Research Chair program
  8. NSERC Discovery grant

向作者/读者索取更多资源

This study presents a spatio-temporal, differential equation model for understanding the spreading of Chronic Wasting Disease (CWD) in cervid species. The model incorporates important factors such as home range overlap and male dispersal, and assesses the impact of various factors on the spreading speed through sensitivity analysis. The study also evaluates the effect of landscape heterogeneity on the spreading of CWD.
Chronic wasting disease (CWD) is a fatal disease of cervid species that continues to spread across North America and now in Europe. It poses a threat to cervid populations and the local ecological and economic communities that depend on them. Although empirical studies have shown that host home range overlap and male dispersal are important in the spread of disease, there are few mechanistic models explicitly considering those factors. We built a spatio-temporal, differential equation model for CWD spreading with restricted movement of hosts within home ranges. The model incorporates both direct and environmental transmission within and between groups as well as male dispersal. We compared the relative influence of host density, sex ratio, home range size, and male dispersal distance on the spreading speed using sensitivity analysis. We also assessed the effect of landscape heterogeneity, quantified as edge density, on the spreading speed of CWD because it jointly alters the host density and home range size. Our model binds the theoretical study of CWD spreading speed together with empirical studies on deer home ranges and sets a base for models in 2D space to evaluate management and control strategies. (c) 2022 Published by Elsevier Ltd.

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