Experimental infection of bats with Geomyces destructans causes white-nose syndrome

Citation

Material Information

Title:
Experimental infection of bats with Geomyces destructans causes white-nose syndrome
Series Title:
Nature
Creator:
Lorch, Jeffrey M.
Meteyer, Carol U.
Behr, Melissa J.
Boyles, Justin G.
Cryan, Paul M.
Hicks, Alan C.
Ballmann, Anne E.
Coleman, Jeremy T. H.
Redell, David N.
Reeder, DeeAnn M.
Blehert, David S
Publication Date:
Language:
English

Subjects

Subjects / Keywords:
Wns ( local )
Geomyces Destructans ( local )
Myotis Lucifugus ( local )
Genre:
serial ( sobekcm )

Notes

Abstract:
White-nose syndrome (WNS) has caused recent catastrophic declines among multiple species of bats in eastern North America1,2. The disease’s name derives from a visually apparent white growth of the newly discovered fungus Geomyces destructans on the skin (including the muzzle) of hibernating bats1,3. Colonization of skin by this fungus is associated with characteristic cutaneous lesions that are the consistent pathological finding related to WNS4. However, the role of G. destructans in WNS remains controversial because evidence to implicate the fungus as the primary cause of this disease is lacking. The debate is fuelled, in part, by the assumption that fungal infections in mammals are most comm associated with immune system dysfunction5,6,7. Additionally, the recent discovery that G. destructans comm colonizes the skin of bats of Europe, where no unusual bat mortality events have been reported8,9,10, has generated further speculation that the fungus is an opportunistic pathogen and that other unidentified factors are the primary cause of WNS11,12. Here we demonstrate that exposure of healthy little brown bats (Myotis lucifugus) to pure cultures of G. destructans causes WNS. Live G. destructans was subsequently cultured from diseased bats, successfully fulfilling established criteria for the determination of G. destructans as a primary pathogen13. We also confirmed that WNS can be transmitted from infected bats to healthy bats through direct contact. Our results provide the first direct evidence that G. destructans is the causal agent of WNS and that the recent emergence of WNS in North America may represent translocation of the fungus to a region with a naive population of animals8. Demonstration of causality is an instrumental step in elucidating the pathogenesis14 and epidemiology15 of WNS and in guiding management actions to preserve bat populations against the novel threat posed by this devastating infectious disease.
Original Version:
Nature, Vol. 480 (2011-10-26).

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