Approximately one-third of amphibian species are experiencing population declines. Among the most affected groups are the Harlequin frogs (Bufonidae: Atelopus), nearly all of which are threatened with ...

Quick Take Purple harlequin toads (Atelopus barbotini) are tiny, about 1 to 1.5 inches long with smooth skin and electric purple patterns. They occur only in French Guiana, inhabiting mid- to ...

A critically endangered toad belonging to one of the most threatened groups of amphibians in the world has been documented by scientists for the first time in 30 years. The starry night harlequin toad ...

As human diseases become alarmingly antibiotic resistant, identification of new pharmaceuticals is critical. The cane toad and other members of the Bufonidae family produce substances widely used in ...

The harlequin toad largely vanished from a deadly fungal pathogen. Biologists have rediscovered the "starry night" harlequin toad in Colombia for the first time in nearly three decades after the ...

Atelopus is a species-rich genus of toads from the Neotropics. Many species of this genus are regarded as vulnerable or endangered because of apparent population declines. In most cases, reasons for ...

The genus Atelopus is represented in Ecuador by 15 species, of which 6 are here described as new taxa. A key for identification, descriptions, and figures are presented for all species, and a detailed ...

Researchers exploring a Colombian mountain range found surviving members of a species of Harlequin frog believed extinct due to a killer fungus wiping out amphibian populations in Central and South ...

Biologists argue that more research needs to be done on the colorful yet poisonous harlequin toads of Central and South America, not only because their ecology is poorly known, but because their ...

A toad thought extinct for 30 years has again seen the light of day, scientists have announced: Meet the starry night harlequin toad. At less than two inches in size, and with a stunning coloration of ...