• Chytridiomycosis is an emerging infectious disease of amphibians caused by an aquatic fungal pathogen, Batrachochytrium dendrobatidis
  • Amphibian die-offs in Australia led to the theory that a pathogen was devastating Australian frogs the pathogen was confirmed to be a chytrid fungus in 1998 and described in 1999
  • Bd appears to be specific to amphibians and is one of only two species of chytrid fungus known to parasitize vertebrates.
  • Bd may be responsible for the greatest disease-caused loss of biodiversity in recorded history.
  • Over just the past 30 years, Bd has caused the catastrophic decline or extinction (in many cases within a single year) of at least 200 species of frogs, even in pristine, remote habitats.
  • These rapid, unexplained declines have occurred around the world.
  • Chytridiomycosis is the first emerging disease shown to cause the decline or extinction of hundreds of species not otherwise threatened.
  • Currently over 350 amphibian species are known to have been infected by Bd
  • Bd infects the superficial, keratin-containing layers of amphibian skin.