Amphibian Declines and Chytridiomycosis

Amphibians are one of the most threatened groups of animals worldwide. Since 1970, scientists have observed precipitous population declines and outright disappearances of numerous amphibian species. Many of these die-offs have been attributed to a newly-recognized fungal disease known as chytridiomycosis (Batrachochytrium dendrobatidis; “Bd”). Chytridiomycosis caused by Bd is the worst infectious disease ever recorded among wildlife in terms of the number of species impacted and the severity of the impact.

To address this issue, PARC and the Division of the National Fish Hatchery System, along with our partners and sponsors, held a conference on 5-7 November 2007.

Recent Updates

  • Global Bd Mapping Project (includes recent publications and downloadable maps)
  • July 2010 update
  • January 2008 update
  • April 2007 update

The purpose of the 2007 international Bd conference was to:

  • Review what we know about Bd
  • Assess scientific priorities and management needs
  • Identify actions to limit the spread and impact


The meeting was comprised of presentations by many of the world’s experts on Bd, case studies of Bd detection and management, interactive panel discussions and working groups resulting in action items, and a poster session.


Conference Working Group Reports (documents)

  • Bd Mapping
  • Bd-Free ‘Phibs Campaign (Ex-Situ Conservation)
  • Article in Reptiles Magazine

Bd Mapping Project

  • For information on the related Bd Mapping Project, click here.
  • Bd Mapping update and Maps 2008 click here
  • New map updates and results July 2010. click here

Related Resources

Article regarding tadpole mortality associated with use of certain glove types
Do you have other recent, Bd-related resources or publications which you would like to share with the PARC community? If so, please e-mail Priya Nanjappa ( to request their posting here.


This conference, held by PARC, US Fish and Wildlife Service Division of the National Fish Hatchery System, was generously supported by US Fish and Wildlife Service Region 5, US Department of Agriculture, Phoenix Zoo/Arizona Zoological Society, Pet Industry Joint Advisory Council, Turner Foundation, Plum Creek Timber Company, US Geological Survey’s Amphibian Research and Monitoring Initiative, Conservation International/Amphibian Specialist Group, National Park Service, US Forest Service, Columbus Zoo and Aquarium, US Environmental Protection Agency, Defenders of Wildlife, Houston Zoo, American Forestry & Paper Association, Association of Fish and Wildlife Agencies, Herpetologists’ League, Society for the Study of Amphibians and Reptiles, and Arizona Game and Fish Department.