Figure 1. Chytridiomycosis: a catastrophic biodiversity disease causing amphibian declines.

Chytridiomycosis emerged in the 1970s but was not detected until the 1990s. (A) An alpine tree frog (Litoria verreauxii alpina) with severe chytridiomycosis, showing skin reddening and an inability to maintain normal upright posture; (B) skin surface of a stony creek frog (formerly Litoria lesueuri). Many cells are infected with sporangia, pushing discharge tubes (arrow) to the skin surface (scanning electron micrograph). Scale bar = 10 µm.