Frog Chytrid Disease and Amphibian Extinction Crisis

Batrachochytrium dendrobatidis (Bd) has driven over 90 amphibian species to extinction and caused welfare crises in wild populations globally.

Key Facts

Chytridiomycosis caused by Bd is the most devastating infectious disease ever recorded in vertebrates
Over 500 amphibian species have declined due to Bd with over 90 confirmed extinctions since 1970
The disease destroys skin function in frogs, impairing osmoregulation and causing cardiac failure over days to weeks
Mountain species at higher elevations are particularly vulnerable due to the fungus optimal growth temperature
Probiotic treatments and captive breeding programs are the primary conservation welfare tools available

Welfare Considerations

Frogs dying of chytridiomycosis experience prolonged physiological failure as their skin loses its regulatory function. The disease causes cardiac failure over days, representing a welfare harm across hundreds of species and billions of individuals. Captive assurance colonies protecting species from extinction simultaneously serve as welfare refuges for individuals from affected populations.

What You Can Do

Support amphibian conservation programs including AArk (Amphibian Ark) captive breeding initiatives
Decontaminate footwear and equipment when moving between water bodies to prevent Bd spread
Advocate for ban on import of potentially Bd-carrying amphibians without quarantine and testing requirements