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All news related to Brian Gratwicke

Vicente’s dart frog on a black background.
May. 12, 2023
Poison frogs living in human care aren’t poisonous, thanks to a “detox” diet of mild insects, like crickets and fruit flies. Can adding alkaloids to a frog’s diet help it regain its toxins and get...
Lemur leaf frog on exhibit at the Smithsonian's National Zoo.
May. 07, 2023
'Hoppy' Amphibian Awareness Week! All week long, the Smithsonian's National Zoo and Conservation Biology Institute will be sharing stories about amazing amphibians and the scientists working to save...
Lemur frog on a coconut shell
Apr. 28, 2022
'Hoppy' Amphibian Awareness Week! All week long, the Smithsonian's National Zoo and Conservation Biology Institute will be sharing stories about amazing amphibians and the scientists working to save...
Panamanian golden frog among leaves, ferns and logs.
Nov. 05, 2021
For decades, scientists have wondered whether the key to saving frogs from the deadly chytrid fungus lies in their skin. Could they genetically modify bacteria found in the frogs’ mucus layer and...
lemur tree frog
Apr. 05, 2019
Stories about amphibians don’t always end with “happily ever after,” but scientists around the globe, including Brian Gratwicke at the Smithsonian Conservation Biology Institute, are working together...
Eastern red-spotted newt at Amazonia
Nov. 30, 2018
The secret to salamanders’ survival may be in their slimy secretions. Scientists at the Smithsonian Conservation Biology Institute are swabbing salamanders in Shenandoah, looking for disease-fighting...
Variable Harlequin Frogs Return to the Wild
Jan. 19, 2018
Through years of research and breeding, Smithsonian scientists have created a thriving variable harlequin frog colony in human care and released approximately 500 healthy frogs in Panama’s Colon...
A small orange variable harlequin frog, Atelopus varius, sitting on a rock
Jan. 18, 2018
Once common along highland streams in western Costa Rica and Panama, the variable harlequin frog, Atelopus varius, is endangered throughout its range, decimated by a disease caused by the amphibian...
A researcher swabbing a salamander
Oct. 13, 2017
In 2016, the international import of 201 salamander species into the United States was restricted in an effort to prevent the newly discovered deadly salamander fungal disease, Batrachochytrium...
Jul. 11, 2016
Nearly one-third of all amphibian species globally are at risk of going extinct.
Oct. 28, 2012
A team of scientists and keepers is traveling all over the eastern United States this year to study a unique and amazing animal: the hellbender.