Status and Trends

Reports & Publications

None

Subtopics

Amphibians

Frogs & Toads Salamanders

Related Subjects

Mammals

Marine Rodents & Rabbits Bats Ungulates (hoofed mammals) Carnivores

Threatened and Endangered Species

Amphibians+Raptors
(Frogs, Toads, and Salamanders) - The continental United States is home to at least 230 amphibian species: 90 frog and toad species, and 140 species of salamanders. Amphibians appear in cities and in natural areas, as well as rainforests and in wetlands. Healthy amphibian populations that once thrived are now on the decline worldwide. In the U.S. alone, declines in amphibian populations are particularly serious in California, the Rocky Mountains, the Southwest, and Puerto Rico. This decline has been a result of amphibian malformations - extra limbs, malformed or missing limbs, and facial malformations. These malformations have been documented in 44 states, and involve nearly 60 species. In some local populations, up to 60% of the amphibians exhibit malformations.

Did You Know...?

USGS Frog Quiz
You can identify different amphibian species by their unique vocalizations or "frog calls." Not all amphibian species make vocalizations, but many frogs and toads do.

2 Total Items

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Conservation Genetics Lab

Publisher: USGS | Science Center: Forest and Rangeland Ecosystem Science Center (FRESC, Corvallis) | Format: URL

fresc.usgs.gov — The Conservation Genetics Lab carries out molecular analysis, pedigree analysis, modeling, data management, and cryogenic sample repository. As a part of this research, the lab investigates the effectiveness of molecular markers used to enhance enforcement of the Endangered Species Act policy. During the past 15 years, this research has involved More...

Texas Gulf Coast Field Research Station

Publisher: USGS | Science Center: Columbia Environmental Research Center (CERC, Columbia) | Format: URL

www.cerc.usgs.gov — The BFRS works cooperatively with team members from CERC and with faculty and graduate students of Department of Wildlife and Fisheries Sciences at Texas A&M University in research areas represented by the branch structure of the CERC including toxicology, ecology, biochemistry and physiology, environmental chemistry, ecogeography, and information More...

Reports & Publications

Subtopics

Amphibians

Related Subjects

Birds

Fish

Mammals

Reptiles

Inland Waters

Contaminants

Threatened and Endangered Species

Genetics

Conservation Genetics Lab

Texas Gulf Coast Field Research Station