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Making the most of mortalities: Novel host-parasite records in a sandy inland mouse (Pseudomys hermannsburgensis)
Journal article   Open access   Peer reviewed

Making the most of mortalities: Novel host-parasite records in a sandy inland mouse (Pseudomys hermannsburgensis)

Fiona Knox, Nahiid Stephens, Sarah Keatley, Amanda Ash, James Douch, Saul Cowen, Kelly Rayner and Rebecca Vaughan-Higgins
International journal for parasitology. Parasites and wildlife, Vol.26, 101037
2025
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Published3.64 MBDownloadView
CC BY V4.0 Open Access

Abstract

Rodentolepis reintroduction tapeworm wildlife cancer One Health sarcoptic mange
From 2020 to 2022, systematic investigation of wildlife mortalities on Dirk Hartog Island, Western Australia was initiated to inform wildlife disease risk analyses for translocation purposes. As part of this monitoring, in November 2020, a sandy inland mouse (Pseudomys hermannsburgensis) was found deceased with multiple comorbidities. Gross necropsy, histopathology and ancillary molecular testing identified several novel host-parasite associations. Sarcoptes scabiei was identified via molecular methods in association with consistent cutaneous pathology, representing the first known detection of this parasite in an Australian native rodent. A putative novel virus belonging to the subfamily Gammaherpesvirinae was also identified, representing the first known detection of a herpesvirus (Orthoherpesviridae) from this species, although it was not clearly associated with other disease processes. A heavy burden of the cestode Hymenolepis microstoma was also present in the gastrointestinal tract, representing a new host record for this species, whilst a pancreatic adenocarcinoma was also found. Beyond the novelty of these host records, these findings contribute to important health baselines of rodent populations on Dirk Hartog Island and highlight the value of investigating mortalities and implementing health surveillance as part of ecological monitoring and wildlife translocation projects.

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Collaboration types
Domestic collaboration
Citation topics
1 Clinical & Life Sciences
1.163 Parasitology - General
1.163.2096 Scabies
Web Of Science research areas
Ecology
Parasitology
ESI research areas
Plant & Animal Science
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