The effect of spatial dynamics on the behaviour of an environmentally transmitted disease

Understanding the spread of pathogens through the environment is critical to a fuller comprehension of disease dynamics. However, many mathematical models of disease dynamics ignore spatial effects. We seek to expand knowledge around the interaction between the bare-nosed wombat (Vombatus ursinus) a...

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Main Authors: Ivy J. Hindle, Lawrence K. Forbes, Scott Carver
Format: Article
Language:English
Published: Taylor & Francis Group 2022-12-01
Series:Journal of Biological Dynamics
Subjects:
Online Access:https://www.tandfonline.com/doi/10.1080/17513758.2022.2061614
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author Ivy J. Hindle
Lawrence K. Forbes
Scott Carver
author_facet Ivy J. Hindle
Lawrence K. Forbes
Scott Carver
author_sort Ivy J. Hindle
collection DOAJ
description Understanding the spread of pathogens through the environment is critical to a fuller comprehension of disease dynamics. However, many mathematical models of disease dynamics ignore spatial effects. We seek to expand knowledge around the interaction between the bare-nosed wombat (Vombatus ursinus) and sarcoptic mange (etiologic agent Sarcoptes scabiei), by extending an aspatial mathematical model to include spatial variation. S. scabiei was found to move through our modelled region as a spatio-temporal travelling wave, leaving behind pockets of localized host extinction, consistent with field observations. The speed of infection spread was also comparable with field research. Our model predicts that the inclusion of spatial dynamics leads to the survival and recovery of affected wombat populations when an aspatial model predicts extinction. Collectively, this research demonstrates how environmentally transmitted S. scabiei can result in travelling wave dynamics, and that inclusion of spatial variation reveals a more resilient host population than aspatial modelling approaches.
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spelling doaj.art-84796c34411a4ca7b3b28377a5b1cbf12022-12-22T03:12:15ZengTaylor & Francis GroupJournal of Biological Dynamics1751-37581751-37662022-12-0116114415910.1080/17513758.2022.2061614The effect of spatial dynamics on the behaviour of an environmentally transmitted diseaseIvy J. Hindle0Lawrence K. Forbes1Scott Carver2School of Physical Sciences, University of Tasmania, Hobart, AustraliaSchool of Physical Sciences, University of Tasmania, Hobart, AustraliaDepartment of Biological Sciences, University of Tasmania, Hobart, AustraliaUnderstanding the spread of pathogens through the environment is critical to a fuller comprehension of disease dynamics. However, many mathematical models of disease dynamics ignore spatial effects. We seek to expand knowledge around the interaction between the bare-nosed wombat (Vombatus ursinus) and sarcoptic mange (etiologic agent Sarcoptes scabiei), by extending an aspatial mathematical model to include spatial variation. S. scabiei was found to move through our modelled region as a spatio-temporal travelling wave, leaving behind pockets of localized host extinction, consistent with field observations. The speed of infection spread was also comparable with field research. Our model predicts that the inclusion of spatial dynamics leads to the survival and recovery of affected wombat populations when an aspatial model predicts extinction. Collectively, this research demonstrates how environmentally transmitted S. scabiei can result in travelling wave dynamics, and that inclusion of spatial variation reveals a more resilient host population than aspatial modelling approaches.https://www.tandfonline.com/doi/10.1080/17513758.2022.2061614Scabiespathogen spreadcommon wombatlandscape epidemiologyenvironmental transmission
spellingShingle Ivy J. Hindle
Lawrence K. Forbes
Scott Carver
The effect of spatial dynamics on the behaviour of an environmentally transmitted disease
Journal of Biological Dynamics
Scabies
pathogen spread
common wombat
landscape epidemiology
environmental transmission
title The effect of spatial dynamics on the behaviour of an environmentally transmitted disease
title_full The effect of spatial dynamics on the behaviour of an environmentally transmitted disease
title_fullStr The effect of spatial dynamics on the behaviour of an environmentally transmitted disease
title_full_unstemmed The effect of spatial dynamics on the behaviour of an environmentally transmitted disease
title_short The effect of spatial dynamics on the behaviour of an environmentally transmitted disease
title_sort effect of spatial dynamics on the behaviour of an environmentally transmitted disease
topic Scabies
pathogen spread
common wombat
landscape epidemiology
environmental transmission
url https://www.tandfonline.com/doi/10.1080/17513758.2022.2061614
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