Endemic infection of the amphibian chytrid fungus in a frog community post-decline

Retallick, Richard W. R., McCallum, Hamish and Speare, Rick (2004) Endemic infection of the amphibian chytrid fungus in a frog community post-decline. Plos Biology, 2 11: 1965-1971. doi:10.1371/journal.pbio.0020351

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Author Retallick, Richard W. R.
McCallum, Hamish
Speare, Rick
Title Endemic infection of the amphibian chytrid fungus in a frog community post-decline
Journal name Plos Biology   Check publisher's open access policy
ISSN 1544-9173
Publication date 2004-11
Sub-type Article (original research)
DOI 10.1371/journal.pbio.0020351
Open Access Status DOI
Volume 2
Issue 11
Start page 1965
End page 1971
Total pages 7
Place of publication USA
Publisher Public Library of Science
Collection year 2004
Language eng
Subject C1
270708 Conservation and Biodiversity
770703 Living resources (flora and fauna)
Abstract The chytrid fungus Batrachochytrium dendrobatidis has been implicated in the decline and extinction of numerous frog species worldwide. In Queensland, Australia, it has been proposed as the cause of the decline or apparent extinction of at least 14 high-elevation rainforest frog species. One of these, Taudactylus eungellensis, disappeared from rainforest streams in Eungella National Park in 1985-1986, but a few remnant populations were subsequently discovered. Here, we report the analysis of B. dendrobatidis infections in toe tips of T. eungellensis and sympatric species collected in a mark-recapture study between 1994 and 1998. This longitudinal study of the fungus in individually marked frogs sheds new light on the effect of this threatening infectious process in field, as distinct from laboratory, conditions. We found a seasonal peak of infection in the cooler months, with no evidence of interannual variation. The overall prevalence of infection was 18% in T. eungellensis and 28% in Litoria wilcoxii/jungguy, a sympatric frog that appeared not to decline in 1985-1986. No infection was found in any of the other sympatric species. Most importantly, we found no consistent evidence of lower survival in T. eungellensis that were infected at the time of first capture, compared with uninfected individuals. These results refute the hypothesis that remnant populations of T. eungellensis recovered after a B. dendrobatidis epidemic because the pathogen had disappeared. They show that populations of T. eungellensis now persist with stable, endemic infections of B. dendrobatidis.
Keyword Biochemistry & Molecular Biology
Population Declines
Q-Index Code C1
Additional Notes Originally published as:Endemic Infection of the Amphibian Chytrid Fungus in a Frog Community Post-Decline Retallick RWR, McCallum H, Speare R Recapture experiments provide evidence that some amphibian species can now persist with infections of the pathogenic chytrid fungus and suggests, for example, that frogs and fungus might be coevolving. Synopsis: Endangered Frogs Coexist with Fungus Once Thought Fatal doi:10.1371/journal.pbio.002035 Copyright: © 2004 Retallick et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2005 Higher Education Research Data Collection
School of Biological Sciences Publications
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Citation counts: TR Web of Science Citation Count  Cited 152 times in Thomson Reuters Web of Science Article | Citations
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Created: Wed, 15 Aug 2007, 03:28:15 EST