Changes in cutaneous microbial abundance with sloughing: possible implications for infection and disease in amphibians

Meyer, Edward A., Cramp, Rebecca L., Hernando Bernal, Manuel and Franklin, Craig E. (2012) Changes in cutaneous microbial abundance with sloughing: possible implications for infection and disease in amphibians. Diseases of Aquatic Organisms, 101 3: 235-242. doi:10.3354/dao02523

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ288967_OA.pdf Full text (open access) application/pdf 209.21KB 0

Author Meyer, Edward A.
Cramp, Rebecca L.
Hernando Bernal, Manuel
Franklin, Craig E.
Title Changes in cutaneous microbial abundance with sloughing: possible implications for infection and disease in amphibians
Journal name Diseases of Aquatic Organisms   Check publisher's open access policy
ISSN 0177-5103
1616-1580
Publication date 2012-11
Sub-type Article (original research)
DOI 10.3354/dao02523
Open Access Status File (Publisher version)
Volume 101
Issue 3
Start page 235
End page 242
Total pages 8
Place of publication Oldendorf, Germany
Publisher Inter-Research
Collection year 2013
Language eng
Formatted abstract
The emergence of disease as a significant global threat to amphibian diversity has generated considerable interest in amphibian defenses against cutaneous microbial infection and disease. To date, however, the influence of sloughing on the susceptibility of amphibians to infection and disease has been largely overlooked. To investigate the potential for sloughing to regulate topical microbial loads, the abundance of cultivable cutaneous bacteria and fungi in the cane toad Rhinella marina were compared before and after sloughing. Toads were also exposed to fluctuating thermal regimes (10−20 and 20−30°C) and variable photoperiods to investigate possible effects of season and climate on sloughing periodicity. Sloughing substantially reduced the abundance of cultivable cutaneous bacteria and fungi by up to 100%. The intermoult interval of toads maintained at 10−20°C was twice that of animals at 20−30°C and did not appear to thermally acclimate. Photoperiod had no discernable influence on sloughing periodicity. Results of this study suggest that normal sloughing cycles could play a significant role in controlling the persistence and build-up of cutaneous microbes, including pathogens. The loss of non-pathogenic commensal and protective skin microbiota after sloughing may also influence host susceptibility to cutaneous pathogens. We suggest that the spatio-temporal dynamics of chytridiomycosis, the widespread and often fatal disease caused by the fungal pathogen Batrachochytrium dendrobatidis, are related to temperature not only because of its effect on the growth of the fungus, but also because of its effect on the frequency of host sloughing.
Keyword Skin
Shedding
Temperature
Rhinella marina
Pathogen
Batrachochytrium dendrobatidis
Commensal microbe
Epidermis
Cutaneous
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2013 Collection
School of Biological Sciences Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 16 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 17 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 13 Jan 2013, 00:23:31 EST by System User on behalf of Scholarly Communication and Digitisation Service