News From the Field
Caribbean Frogs Started With a Single, Ancient Voyage on a Raft From South America
June 6, 2007
Nearly all of the 162 land-breeding frog species on Caribbean islands originated from a single species that rafted on a sea voyage from South America about 30-to-50-million years ago, according to a DNA-sequence-analysis study. The discovery is surprising because no previous theories of how the frogs arrived had predicted a single origin and because groups of close relatives rarely dominate the fauna of an entire continent or major geographic region.
See also: NSF News Release
The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2017, its budget is $7.5 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives more than 48,000 competitive proposals for funding and makes about 12,000 new funding awards.
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