As a result of this event, monthly surveillance for cutaneous chytrid
infection was instigated; ventral hind limbs, feet, and digits are examined from five healthy frogs and from any sick or dead frogs.
skin fungi, which have devastated frogs in parts of Australia and Central America, have now turned up in the wild in the United States.
Whether Chlamydia was the primary pathogen responsible for the die-off or served as a cofactor with the chytrid
fungus or other parasites was difficult to determine.
Fresh skin smears and histologic sections of the epidermis, however, consistently contained large numbers of developing and mature sporangia of a new genus of chytrid
fungus (phylum Chytridiomycota) (Figures 1, 2).
Ironically, the biggest risk for the frogs is something they can't guard against: a mysterious chytrid
(aquatic) fungus that has taken out many captive frog populations, including some zoos.
fungi are common pathogens of plants and insects but had never before been known to attack vertebrates.
Emergence of the Chytrid
Fungus Batrachochytrium Dendrobatidis and Global Amphibian Declines
In 1999, Pessier and others identified that Bd, a chytrid
fungus, was the cause.
fungus broadly distributed in the Brazilian Atlantic rain forest.
This species of frog had not been seen for 30 years, and a chytrid
fungus, Batrachochytrium dendrobatidis, was thought to be the reason (1,2).
Chicago Zoological Society) Leading amphibian conservationist in halting the species' decline; facilitated discovery of the chytrid
fungus that has been called the most devastating animal disease ever recorded.
The Effects of Anthropogenic Chemicals on the Amphibian Chytrid
Fungus (Batrachochytrium dendrohatidis) in Culture.