Journal of Wildlife Diseases, 45(2), 2009, pp. 537-541
© Wildlife Disease Association 2009
Lack of Evidence for the Drought-linked Chytridiomycosis Hypothesis
Kerry M. Kriger
Centre for Innovative Conservation Strategies, School of Environment, Griffith University, Gold Coast, Queensland, Australia 9222 (email: kerry{at}savethefrogs.com)
ABSTRACT:
A significant amount of recent research has focused on the potentially synergistic roles of climate change and disease in causing amphibian declines and extinctions. Herein I discuss the drought-linked chytridiomycosis hypothesis (DLCH), which states that prolonged or intensified dry seasons trigger or exacerbate epidemics of chytridiomycosis, a potentially lethal skin disease of amphibians caused by the chytrid fungus Batrachochytrium dendrobatidis. I demonstrate that the DLCH runs contrary to our knowledge of B. dendrobatidis physiology, biogeography, and host–parasite ecology and conclude that abnormally dry weather should actually favor amphibians by decreasing the prevalence, severity, and spread of chytridiomycosis.
Key words: Amphibian declines, Batrachochytrium dendrobatidis, climate change, extinction, global warming, wildlife disease.
Copyright © 2009 by the Wildlife Disease Association.