Wildlife

Amphibian Decline and Chytrid Fungus Welfare

Chytridiomycosis caused by the Batrachochytrium dendrobatidis fungus has driven dozens of amphibian species to extinction and continues to devastate wild populations.

Key Facts

Chytridiomycosis has caused the greatest disease-driven vertebrate extinction event ever recorded
Over 200 amphibian species have declined or gone extinct due to Bd since the 1970s
The disease destroys the skin of amphibians, disrupting osmotic balance and causing heart failure
Global trade in live amphibians spread the pathogen from its presumed African origin
Captive assurance colonies of endangered species are maintained in biosecure facilities worldwide

Welfare Considerations

Individual amphibians dying from chytridiomycosis experience a prolonged decline as their skin function deteriorates over days to weeks. This is a significant welfare harm occurring across millions of individuals in affected populations. Captive assurance colony programs prevent extinction but involve welfare trade-offs from captive confinement. Biosecurity in amphibian trade is the most important preventive measure.

What You Can Do

Support biosecurity regulations on amphibian trade to prevent disease spread
Never release captive amphibians into wild habitats due to disease introduction risk
Donate to amphibian conservation programs maintaining assurance colonies of endangered species
Learn about chytridiomycosis as one of the most serious wildlife disease crises in history
Support research into potential treatments and disease-resistant amphibian populations