eCite Digital Repository

Expanded molecular typing of Sarcoptes scabiei provides further evidence of disease spillover events in the epidemiology of sarcoptic mange in Australian marsupials

Citation

Fraser, TA and Holme, R and Martin, AM and Whiteley, P and Montarello, M and Raw, C and Carver, S and Polkinghorne, A, Expanded molecular typing of Sarcoptes scabiei provides further evidence of disease spillover events in the epidemiology of sarcoptic mange in Australian marsupials, Journal of Wildlife Diseases, 55, (1) pp. 231-237. ISSN 0090-3558 (2019) [Refereed Article]

Copyright Statement

Copyright 2019 Wildlife Disease Association

DOI: doi:10.7589/2018-04-101

Abstract

The invasive ectoparasite Sarcoptes scabiei affects the welfare and conservation of Australian marsupials. Molecular data suggest that spillover from other hosts may be responsible for the emergence of this infectious disease, but the scale of such studies is limited. We performed expanded molecular typing of the S. scabiei mitochondrial cox1 gene from 81 skin scrapings from infested wombats (Vombatus ursinus), koalas (Phascolarctos cinereus), red foxes (Vulpes vulpes), and dogs (Canis lupus familiaris) across Australia. Combined with existing S. scabiei sequences, our analysis revealed 16 haplotypes among Australian animals, sharing between 93.3% and 99.7% sequence similarity. While some sequences were unique to specific hosts or to Australia, key haplotypes could be detected across several marsupial hosts as well as to wild or domestic canids in Australia. We identified 43 cox1 haplotypes with many Australian haplotypes identical to S. scabiei mites from inside and outside Europe. We concluded that multiple introduction events were plausible explanations to the origin and emergence of this parasite into Australian marsupials and that disease spillover from canids was likely. Together, our greatly expanded S. scabiei sequence dataset provided a more nuanced picture of both spillover and sustained intraspecific transmission for this important parasite.

Item Details

Item Type:Refereed Article
Keywords:epidemiology, intraspecific transmission, molecular typing, Sarcoptes scabiei, scabies, spillover
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Veterinary sciences
Research Field:Veterinary parasitology
Objective Division:Environmental Management
Objective Group:Terrestrial systems and management
Objective Field:Control of pests, diseases and exotic species in terrestrial environments
UTAS Author:Fraser, TA (Ms Tamieka Fraser)
UTAS Author:Martin, AM (Ms Alynn Martin)
UTAS Author:Carver, S (Dr Scott Carver)
ID Code:149604
Year Published:2019
Web of Science® Times Cited:4
Deposited By:Zoology
Deposited On:2022-04-05
Last Modified:2022-05-24
Downloads:0

Repository Staff Only: item control page