First record of in the thorny devil, .

Int J Parasitol Parasites Wildl

Department of Veterinary Biosciences, Faculty of Science, The University of Melbourne, Parkville, Victoria, 3010, Australia.

Published: December 2024

AI Article Synopsis

  • A study on thorny devils at Alice Springs Desert Park reported a poor long-term survival rate of around 2.16 years, with no notable differences in survival based on whether the individuals were wild-caught or captive-born, and between males and females.
  • Limited causes of death were identified for the dead or euthanized animals, and a current health assessment of live individuals revealed a significant presence of coccidian oocysts in their fecal samples.
  • The research highlights the need for further study to determine the potential effects of these coccidian parasites on the health and mortality of thorny devils, as the histological examination was not conducted to assess tissue impact.

Article Abstract

Poor long-term survival (Mean = 2.16 y; 95% CI 1.68-2.65) was identified in a captive population of thorny devils () held at the Alice Springs Desert Park in the Northern Territory, Australia, over a period of 27 years. There was no significant difference in survival time (after acquisition) of wild-caught individuals compared captive born animals, or males compared to females. Limited information was available regarding the cause(s) of death for animals found dead or euthanased. Health of the live population at the time of the study (n = 14) was assessed by clinical history review, physical examination, and faecal examination. Large numbers of coccidian oocysts measuring 20-24 μm in diameter were identified upon faecal examination. Molecular investigation of genomic DNA from these samples identified based on the sequences of partial regions of the mitochondrial cytochrome oxidase subunit 1 gene (1) and the nuclear small subunit of ribosomal RNA gene (). was originally described from the bearded dragon () and has since been recorded in the inland bearded dragon () and the central netted dragon (). The present case expands the host range for Histological examination of tissues was not available, and therefore the potential role of in morbidity and mortality of is not clear. Further research is required to understand if colonization with is pathogenic in this species.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11414535PMC
http://dx.doi.org/10.1016/j.ijppaw.2024.100983DOI Listing

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