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Latest Batrachochytrium dendrobatidis Stories

Deadly Fungus Causing Dehydration In Wild Frogs
2012-04-27 04:47:07

According to a new study, the fungal infection killing amphibians around the world is causing deadly dehydration in frogs in the wild. The scientists say that high levels of Batrachochytrium dendrobatidis (Bd), the fungus known as the culprit behind the death of the frogs, disrupts fluid and electrolyte balance in the frogs.  As a result, the amphibians' sodium and potassium levels are depleted, causing cardiac arrest and death. San Francisco State University biologist Vance...

2012-03-12 19:58:19

Known for its distinctive "ribbit" call, the noisy Pacific chorus frog is a potent carrier of a deadly amphibian disease, according to new research published today in the journal PLoS ONE. Just how this common North American frog survives chytridiomycosis may hold clues to protect more vulnerable species from the disease. Chytrid has wiped out more than 200 frog species across the world and poses the greatest threat to vertebrate biodiversity of any known disease. In California's Sierra...

Rare Fungus Kills Endangered Rattlesnakes In Southern Illinois
2012-02-22 04:22:09

A small population of rattlesnakes that already is in decline in southern Illinois faces a new and unexpected threat in the form of a fungus rarely seen in the wild, researchers report. The eastern massasauga rattlesnake (Sistrurus catenatus catenatus), a candidate for protection under the federal Endangered Species Act, suffers from habitat loss and environmental stresses wherever it is found, said University of Illinois comparative biosciences visiting instructor and wildlife...

Frog Fungus Spread Throughout The World Via Trade
2011-11-09 13:06:06

According to new research, a killer frog fungus that is spreading around the world is being distributed through amphibian trade by zoos and collectors. Scientists said that the most widespread and lethal form of the three distinct lineages of the chytrid fungus was probably created by a crossing of two prior forms. Chytrid is now found on every continent and has wiped out a number of species. The fungus kills amphibians by blocking the transfer of vital substances through their...

2011-09-19 23:22:46

Researchers at Oregon State University have shown for the first time that loss of biodiversity may be contributing to a fungal infection that is killing amphibians around the world, and provides more evidence for why biodiversity is important to many ecosystems. The findings, being published this week in Proceedings of the National Academy of Sciences, used laboratory studies of amphibians to show that increased species richness decreased both the prevalence and severity of infection...

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2011-08-18 10:22:38

SF State's Vance Vredenburg and team continue focus on mass extinction of amphibians An international team of researchers has completed the first major survey in Asia of a deadly fungus that has wiped out more than 200 species of amphibians worldwide. The massive survey could help scientists zero in on why the fungus has been unusually devastating in many parts of the globe -- and why Asian amphibians have so far been spared the same dramatic declines. The disease chytridiomycosis, caused by...

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2011-05-03 09:47:19

There's a crisis among the world's amphibians"”about 40 percent of amphibian species have dwindled in numbers in just three decades. Now, museum jars stuffed full of amphibians may help scientists decide whether this wave of extinctions was caused by a fungal infection. DNA swabbed from the preservative-soaked skins of salamanders, frogs and toads"”collected from some of Central America's best-known extinction hotspots"” revealed a startling but clear pattern. Salamanders in...

2011-05-02 23:49:12

Museum specimens help tell the story Using museum specimens from Mexico, Guatemala and Costa Rica, a team of researchers from San Francisco State University and University of California at Berkeley has documented evidence of a Batrachochytrium dendrobatidis (Bd) epidemic wave that wiped out native amphibians, according to research to be published on May 3 by the Proceedings of the National Academy of Sciences. (PNAS). More than 40 percent of all amphibian species are currently in decline,...

2011-04-25 16:40:38

Amphibian declines around the world have forced many species to the brink of extinction, are much more complex than realized and have multiple causes that are still not fully understood, researchers conclude in a new report. The search for a single causative factor is often missing the larger picture, they said, and approaches to address the crisis may fail if they don't consider the totality of causes "“ or could even make things worse. No one issue can explain all of the population...

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2010-05-11 08:10:00

Scientists have unraveled the dynamics of a deadly disease that is wiping out amphibian populations across the globe. New findings, published May 10 in the Proceedings of the National Academy of Sciences, suggest that infection intensity -- the severity of the disease among individuals -- determines whether frog populations will survive or succumb to an amphibian fungal disease called Chytridiomycosis. The research identifies a dangerous tipping point in infection intensity, beyond which...