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Population-scale treatment informs solutions for control of environmentally transmitted wildlife disease

Martin, AM, Richards, SA ORCID: 0000-0002-9638-5827, Fraser, TA, Polkinghorne, A, Burridge, CP ORCID: 0000-0002-8185-6091 and Carver, S ORCID: 0000-0002-3579-7588 2019 , 'Population-scale treatment informs solutions for control of environmentally transmitted wildlife disease' , Journal of Applied Ecology, vol. 56, no. 10 , pp. 2363-2375 , doi: 10.1111/1365-2664.13467.

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Abstract

Long‐term pathogen control or eradication in wildlife is rare and represents a major challenge in conservation. Control is particularly difficult for environmentally transmitted pathogens, including some of the most conservation‐critical wildlife diseases.We undertook a treatment programme aimed at population‐scale eradication of the environmentally transmitted Sarcoptes scabiei mite (causative agent of sarcoptic mange) during an epizootic in bare‐nosed wombats (Vombatus ursinus). Field trial results were used to parameterize a mechanistic host‐disease model that explicitly described indirect transmission, host behaviour and viable disease intervention methods.Model analysis shows that elimination of S. scabiei in the wild is most sensitive to the success of treatment delivery, and duration of the programme. In addition, we found the frequency that wombats switch burrows was an important positive driver of mite persistence. Synthesis and applications. This research emphasizes the utility of applying model‐guided management techniques in order to achieve practical solutions for controlling disease in the field. We find that control efforts of Sarcoptes scabiei are most successful when simultaneous improvements are made to the current best‐practice protocol, specifically the implementation of better treatment application methods in combination with a longer lasting treatment. These suggested management changes may also reduce the resources and field effort required to implement a successful regime. Furthermore, our approach and findings have applicability to other species affected by S. scabiei (e.g. wolves, red foxes, Spanish ibex and American black bear), as well as other conservation‐critical systems involving environmental transmission (e.g. bat white‐nose syndrome and amphibian chytridiomycosis).

Item Type: Article
Authors/Creators:Martin, AM and Richards, SA and Fraser, TA and Polkinghorne, A and Burridge, CP and Carver, S
Keywords: bare‐nosed wombat, disease transmission, environmental transmission, host‐disease modelling, Sarcoptes scabiei, sarcoptic mange, Vombatus ursinus, wildlife disease management
Journal or Publication Title: Journal of Applied Ecology
Publisher: Blackwell Publishing Ltd
ISSN: 0021-8901
DOI / ID Number: 10.1111/1365-2664.13467
Copyright Information:

Copyright 2019 The Authors

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