San Francisco News
Researchers finds killer frog in SF's Golden Gate Park
SAN FRANCISCO -- Killer frogs are on the loose in San Francisco.
They don't kill humans but there is a frog that is carrying a deadly infection that is decimating the amphibian population around the world, a study from Stanford University School of Medicine reports.
Researchers at Stanford tested 23 African clawed frogs and identified three frogs carrying the pathogen, including one found in Golden Gate Park.
An African clawed frog taken from Lily Pond in Golden Gate Park has tested positive for a fungal pathogen that is responsible for the decline or extinction of about 200 amphibian species worldwide, the report said.
The pathogen, known as Batrachochytrium dendrobatis, is transmitted through the water and the fungal spores can tunnel into the animals' skin, causing skin thickening, electrolyte imbalance and brain swelling, said Sherril Green, a professor at Stanford and the senior author of the report.
The frogs were first brought to the United States in the early 20th century for the purpose of pregnancy testing.
In the 1920s, it was discovered that injecting the frogs with the urine from pregnant women could spur egg production in them. Hospitals began doing this to determine if women were pregnant, the report said.
The practice was largely discontinued in the 1970s and some of the frogs were released into the wild.
The other two that tested positive were found in San Diego.
golden gate park, animal, animals in peril, stanford university, study, san francisco news
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