Species and their Ecology
The U.S. is home to approximately 287 of the world's estimated 6,000 amphibian species. The number of known species changes periodically as new species are discovered and new genetic techniques (e.g. molecular genetics) allow scientists to distinguish among cryptic species.
Resources
Amphibian Taxonomy
ARMI conducts research on the natural history of species; writing reports and describing the ecology of America's amphibians. ARMI also collaborates with federal and state partners to design, implement, and evaluate management actions that benefit T&E and other imperiled amphibian species.
Federal and State Partners: Information about the status, management, and conservation of amphibians is found throughout the ARMI web site [e.g. Products Database and Topics Sections]. Please consult the "National Amphibian Atlas" to identify the approximate range of the species of interest.
Species and their Ecology - ARMI Papers & Reports
Data Release Mercury concentrations in amphibian tissues across the United States, 2016-2021
Papers & Reports Terrestrial Movement Patterns of the Common Toad (Bufo bufo) in Central Spain Reveal Habitat of Conservation Importance
Papers & Reports Native amphibian toxin reduces invasive crayfish feeding with potential benefits to stream biodiversity
Results
We found that the presence of TTX in any form significantly reduced crayfish movement and decreased the amount of food consumed over time. Crayfish responses to the anuran treatment did not significantly differ from controls.
Conclusion
Our laboratory results show that naturally occurring neurotoxin from native California newts limits invasive crayfish foraging and feeding rates, which may play a role in preserving local stream ecosystems by limiting invasive crayfish behaviors that are detrimental to biodiversity.
View All Data Releases on Species and their Ecology
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