Amphibian Chytrid Disease: Conservation and Welfare Crisis

Chytridiomycosis, caused by the fungus Batrachochytrium dendrobatidis, has driven more amphibian species to extinction than any other disease in recorded history. Its welfare impacts on individual animals are severe.

Key Facts

Chytrid fungus has caused the decline or extinction of at least 501 amphibian species worldwide
The disease damages the skin of amphibians, disrupting electrolyte balance and causing cardiac arrest
Affected frogs show lethargy, loss of normal fright response and skin abnormalities before death
Climate change is expanding the range and virulence of chytrid fungus into previously safe habitats
Captive assurance colonies in specialist facilities protect dozens of critically endangered amphibian species from extinction

Welfare Considerations

Chytridiomycosis causes prolonged suffering before death: affected amphibians become lethargic, confused and die slowly from disrupted osmoregulation. The individual welfare harm multiplied across millions of affected animals represents one of the largest wildlife welfare crises caused by disease. The trade in amphibians for the pet market played a significant role in spreading chytrid globally, a sobering lesson about the unintended consequences of the exotic pet industry. Conservation efforts through captive assurance colonies preserve genetic diversity but cannot address the welfare of wild-dying populations.

What You Can Do

Never release pet amphibians or their water into the wild - this can spread chytrid and other diseases
Disinfect boots and equipment when moving between water bodies to prevent disease spread
Support the Amphibian Survival Alliance and organisations running captive assurance colonies
Avoid purchasing wild-caught amphibians as pets
Report unusual amphibian deaths or die-offs to the Garden Wildlife Health project