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‘Most Destructive Pathogen Ever’ Has Created Zombie-Like Apocalypse for World’s Amphibians

March 29, 2019

‘Most Destructive Pathogen Ever’ Has Created Zombie-Like Apocalypse for World’s Amphibians

“If it were a human pathogen, it’d be in a zombie film.”

A fungal disease which humans have helped to spread among amphibians has led to the decline of 500 species over the past 50 years. (Photo: Centophobia/Flickr/cc)

A terrifying new study details the havoc being wrought by what scientists call “the most destructive pathogen ever” recorded on earth, finding that with help from unwitting humans a “silent killer” has caused major declines of frogs, salamanders, and hundreds of other amphibian species.

Chytridiomycosis, or chytrid fungus, has killed off 90 species over the past 50 years while leading to huge losses of 501 kinds of frogs, toads, salamanders, and other amphibians, according to researchers from a number of worldwide universities. Nearly 125 of those species have declined by at least 90 percent due to the rapid spread of the pathogen.

“We’ve known that chytrid’s really bad, but we didn’t know how bad it was, and it’s much worse than the previous early estimates.” —Ben Scheele, ecologist

The report, published in Science on Thursday, offers disturbing new information about a disease which scientists first detected in 1998—but whose power they didn’t grasp until now.

“We’ve known that chytrid’s really bad, but we didn’t know how bad it was, and it’s much worse than the previous early estimates,” Ben Scheele, an ecologist at Australian National University and lead author of the study, told National Geographic.

Chytrid fungus kills amphibians by eating away the skin of its hosts, leaving amphibians unable to breathe and quickly going into cardiac arrest. The pathogen is easily spread and rapidly destructive to the 695 species it infects.

“If it were a human pathogen, it’d be in a zombie film,” biologist Dan Greenberg told National Geographic.

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