One of the major reasons for these declines is chytridiomycosis, caused by the chytridiomycete
fungus, Batrachochytrium dendrobatidis (1,2).
These features were considered diagnostic of a chytridiomycete fungus (9).
A cutaneous infection by a chytridiomycete fungus observed in two frogs could have been a cofactor in the die-off.
Nutritional and germination requirements of the rumen chytridiomycete
In particular, 2 emerging pathogenic fungi--the chytridiomycete
Batrachochytrium dendrobatidis, which causes chytridiomycosis in amphibians (4,5), and the ascomycete Geomyces destructans, which causes white-nose syndrome (WNS) in hibernating bats (6)--are implicated in the widespread decline of their vertebrate hosts.
Since their recognition in 1975, the anaerobic gut fungus Neocallimastix frontalis from sheep has been classified as Chytridiomycetes
, based on thallus morphology (Orpin, 1975) and the presence of chitin in the cell walls (Orpin 1976; Orpin, 1977).