Field Diagnostics and Seasonality of Ophidiomyces ophiodiicola in Wild Snake Populations

Jennifer M. McKenzie, Steven J. Price, J. Leo Fleckenstein, Andrea N. Drayer, Grant M. Connette, Elizabeth Bohuski, Jeffrey M. Lorch

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

Snake fungal disease (SFD) is an emerging disease caused by the fungal pathogen, Ophidiomyces ophiodiicola. Clinical signs of SFD include dermal lesions, including regional and local edema, crusts, and ulcers. Snake fungal disease is widespread in the Eastern United States, yet there are limited data on how clinical signs of SFD compare with laboratory diagnostics. We compared two sampling methods for O. ophiodiicola, scale clip collection and swabbing, to evaluate whether collection method impacted the results of polymerase chain reaction (PCR). In addition, we evaluated the use of clinical signs to predict the presence of O. ophiodiicola across seasons, snake habitat affiliation (aquatic or terrestrial) and study sites. We found no significant difference in PCR results between sampling methods. Clinical signs were a strong predictor of O. ophiodiicola presence in spring and summer seasons. Snakes occupying terrestrial environments had a lower overall probability of testing positive for O. ophiodiicola compared to snakes occupying aquatic environments. Although our study indicates that both clinical signs of SFD and prevalence of O. ophiodiicola vary seasonally and based on habitat preferences of the host, our analysis suggests that clinical signs can serve as a reliable indicator of O. ophiodiicola presence, especially during spring and summer.

Original languageEnglish
Pages (from-to)141-150
Number of pages10
JournalEcoHealth
Volume16
Issue number1
DOIs
StatePublished - Mar 15 2019

Bibliographical note

Publisher Copyright:
© 2018, EcoHealth Alliance.

Keywords

  • Clinical signs
  • Fungal pathogens
  • PCR
  • Reptiles
  • Snake fungal disease

ASJC Scopus subject areas

  • Ecology
  • Health, Toxicology and Mutagenesis

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