Chytrid Fungus (Chytridiomycosis)

Chytridiomycosis is caused by a fungus, Batrachochytrium dendrobatidis, which seems to be specific to amphibians.

Commonly Affected Species:

Signs Of Disease

Chytridiomycosis usually presents as a high mortality event in affected bodies of water. The fungus usually affects the skin and causes water balance problems. Adult amphibians infected with chytrid fungi have exhibited symptoms such as extended back legs, lethargy, and loss of the righting reflex. In larvae, jaw sheaths and tooth rows of tadpoles lack pigment or appear deformed, which may impede feeding activity. Chytrid can affect growth of juvenile amphibians and cause stunting or limb or mouthpart deformities.

Where is Disease Found?

Chytridiomycosis is found throughout most of North America. It has been documented in a variety of amphibian species in Idaho.

How Can I Protect Myself?

Chytridiomycosis poses no human health hazards. Wear personal protection equipment when handling amphibians and disinfect all equipment and boots between water bodies.

Samples to Collect

If there is concern about this condition, contact a conservation officer or an Idaho Department of Fish and Game Regional Office. Appropriate samples can be collected for testing if deemed necessary.

Can I Eat The Meat?

Meat from amphibians that die of chytridiomycosis should not be consumed by humans.

What is IDFG doing to help manage this disease?:

Idaho Fish and Game is conducting surveillance for chytrid fungus in native amphibians in the state. Management of affected populations is difficult. Advisories are in place to guide the public and researchers working with amphibians in cleaning and sanitizing equipment and clothing between bodies of water to minimize transfer of this fungus to areas with naive populations.

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