Updates on the fight to save amphibians

February 11, 2016
Dr. Karen Lips (University of Maryland) handles an Ensatina salamander in the laboratory. Credit: Vance Vredenburg, San Francisco State University

On January 12, 2016, the U.S. Fish and Wildlife Service imposed a ban on the import and interstate transport of 201 species of salamanders, in an effort to prevent the deadly fungal pathogen Batrachochytrium salamandrivorans (Bsal) from reaching the United States. First discovered in the Netherlands in 2013, Bsal was found to have hitched a ride on Asian salamanders imported to Europe as pets. While some salamander species worldwide are resistant to Bsal, many European and North American salamanders—which did not co-evolve with the fungus—seem to be more susceptible to infection.

Bsal has not yet arrived in North America, and scientists and regulators want to keep it that way for as long as possible—especially until more is known about the deadly disease. At a press briefing at the Annual Meeting of the American Association for the Advancement of Science (AAAS) on February 11, 2016, leading amphibian researchers from the University of Maryland, San Francisco State University and the University of Puerto Rico will discuss lessons learned from efforts to study and control Batrachochytrium dendrobatidis (Bd), a closely related fungus that has already exacted a severe toll on worldwide frog populations.

"North America is home to the highest number of salamander species in the world. They are a vital and irreplaceable component of our forest ecosystems," said Karen Lips, a professor of biology at UMD and organizer of the related scientific session at the AAAS meeting. Lips will also speak at the press briefing on February 11. "Bsal is the latest invasive pathogen to threaten our native wildlife, but it will certainly not be the last. Both Bd and Bsal are examples of a much bigger, global-scale problem."

First discovered in the late 1990s, Bd has been discovered infecting amphibians on all continents except Antarctica. While this epidemic has resulted in high losses, it has also revealed much about why and how some amphibians are resistant to infection, and what sort of environmental conditions exacerbate the spread of the disease.

Speakers at the briefing will review the state of knowledge on in amphibians, including the discovery new fungal pathogens as well as some genetic responses and certain types of skin bacteria that can guard against Bd infection. In some cases, these defenses cause certain amphibian species to act as vectors, capable of tolerating the fungus while spreading it to other more susceptible hosts. The researchers will also discuss the role of climate, including the preferred range of temperature and moisture most likely preferred by Bd, Bsal and other related fungal pathogens.

Explore further: Invasive amphibian fungus could threaten US salamander populations

Related Stories

Preventing spread of deadly salamander disease in North America

December 10, 2015

An emerging fungal pathogen that has caused recent die-offs of salamanders in Europe, faces a formidable foe in North America: the Amphibian Survival Alliance and its partners, who today published a paper outlining the conservation ...

Biologists piece together history of deadly fungus

November 11, 2015

New research from two San Francisco State University biologists is filling in some pieces of the puzzle about how a deadly fungus arrived in California and began wiping out amphibian populations.

Deadly amphibian fungus may decline, study says

January 14, 2016

A new study by WCS and other groups offers a glimmer of hope for some amphibian populations decimated by the deadly chytrid fungus: climate change may make environmental conditions for the fungus unsuitable in some regions ...

Recommended for you

Cow gene study shows why most clones fail

December 9, 2016

It has been 20 years since Dolly the sheep was successfully cloned in Scotland, but cloning mammals remains a challenge. A new study by researchers from the U.S. and France of gene expression in developing clones now shows ...

Blueprint for shape in ancient land plants

December 9, 2016

Scientists from the Universities of Bristol and Cambridge have unlocked the secrets of shape in the most ancient of land plants using time-lapse imaging, growth analysis and computer modelling.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.