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Tag: "frog" at biology news

Race to halt global amphibian crisis boosted by rediscovery of endangered Colombian frogs

The rediscovery of two frog species feared extinct has made a new Colombian pr...ically Endangered frogs ?the Santa Marta harlequin frog (Atelopus laetissimus) and the San Lorenzo harlequin frog (Atelopus nahumae) ?for the first time in ...

Cracking the egg

... eggs of two other organisms previously studied, a frog and a sea squirt. Obviously early development is a very stable process and many of the crucial steps associated with it have remained the same along the vertebrate evolutionary pathway. But at the same time there's evidence of instability in other ar...

Global map shows new patterns of extinction risk

...s of northern Australia are home to many declining frog species, although the precise causes of these declines often remain enigmatic. ...

Recently discovered species gain protection

... also critically important for globally threatened frog species, whose last remaining habitat is diminishi...l Cordillera. Seven Vulnerable and four Endangered frog species occur within the new reserve, as do five additional species so new to science that they are ...

Penn study on lung-infecting bacterial enzyme suggests new approach to cystic fibrosis treatment

...eam demonstrated the disruptive action of SMase in frog oocytes (egg cells) engineered to place CFTR in their membrane. These oocytes are an experimental tool that allows the researchers to assess the flow of ions across the membrane by measuring electrical current. The researchers found that direct expos...

Natural antibiotics yield secrets to atom-level imaging technique

... They're copiously produced in injured or infected frog skin, for instance, and the linings of the human respiratory and gastrointestinal tracts also crank out the short proteins in response to invading pathogens. In addition to fighting bacteria, AMPs attack viruses, fungi and even cancer cells, so dr...

Caribbean frogs started with a single, ancient voyage on a raft from South America

Red frog from mountains of Haiti. Eleutherodactylus audant... de la Selle. Nearly all of the 162 land-breeding frog species on Caribbean islands, including the coqui frogs of Puerto Rico, originated from a single fro...

Researchers find 24 species believed new to science in Suriname rainforest

...species believed to be new to science, including a frog with florescent purple markings and other amphibia...24 species believed new to science are an Atelopus frog with brilliant purple markings, four Eleutherodactylus frog species, six species of fish, 12 dung be...

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