Smallest frog of Andes discovered


Female Noble's pygmy frog with two eggsFrom mongabay.com:

Smallest Andean frog discovered in cloud forests of Peru

Jeremy Hance

March 18, 2009

At 3,000 meters (9,842 feet) in the Andes herpetologists were surprised to discover a frog so small it could sit on a dime with room to spare. Further study showed that this new species, named Noble’s pygmy frog, is the smallest frog in the Andean mountain range.

The tiny frog took biologists by surprise since as a general rule species in higher altitudes tend to be larger than similar species in lower regions. Measuring at less than half an inch, the Noble’s pygmy frog is not only the smallest frog in the Andes, but one of the smallest vertebrates in the world above 3,000 meters.

Unlike most of her relatives the female Noble’s pygmy frog lays eggs that hatch not tadpoles, but actual infant frogs. Instead of laying hundreds of eggs, she lays only two in a moist place, like under moss or the leaf litter. The mother protects the eggs from drying out and hungry insects.

The status of the Noble’s pygmy frog population is unknown, however the chytrid fungus that has devastated amphibians globally has also taken its toll in Peru. Herpetologists hope the nature of the ecosystems in the Andes allows endangered frogs places to retreat to avoid the plague.

Male Noble's pygmy frog on index fingerThe frog was discovered in the cloud forests of Manu National Park in Peru. The frog inhabits cloud forest, montane scrub, and the high-elevation grasslands located in the park and the privately-owned Wayqecha Research Station. Ten new frog species have been discovered in these cloud forests in the last two years alone.

The new species is described by Edgar Lehr from the Senckenberg Natural History Collections in Dresden and Swiss-Peruvian ecologist Alessandro Catenazzi from the University of California at Berkeley in the latest issue of the journal Copeia.

Citation: Lehr, E., and A. Catenazzi. 2009. A new species of minute Noblella (Anura: Strabomantidae) from southern Peru: the smallest frog of the Andes. Copeia 2009(1): 148-156.

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Poison frog diversity linked to the Andes

(03/10/2009) Electric colors, wild markings, and toxic skin have made poison frogs well-known inhabitants of the Amazon rainforest. With 353 recognized species, and probably more awaiting discovery, poison frogs are an incredibly diverse group of amphibians. While it has long been believed that the Amazon basin, itself, was the source of their diversity, a new study published in PLoS Biology has uncovered that the Andes mountain chain has served as an oven of evolutionary biodiversity for poison frogs over several million years.

Photos of new frogs discovered in Colombia

(02/03/2009) Ten undescribed species of amphibians — including nine frog and one salamander — have been discovered in the mountains of Colombia, report scientists from Conservation International (CI). The “new” amphibians included spiky-skinned, orange-legged rain frog, three poison dart frogs and three glass frogs, named for their transparent skin. The amphibians were discovered during a recent Rapid Assessment Program (RAP) expedition in the Tacarcuna area of the Darien, near the border with Panama.

See also here. And here.

Newly Discovered Chemical Weapon In Poison Frogs’ Arsenal: here.

Pleasing poison frog (Ameerega bassleri): here.

Dig a pond to help Britain’s frogs – Free advice: here.

4 thoughts on “Smallest frog of Andes discovered

  1. Pingback: Peru poison frog’s monogamy discovered | Dear Kitty. Some blog

  2. Pingback: Endangered Andean toad rediscovery in Ecuador | Dear Kitty. Some blog

  3. Pingback: Endangered Andean toad rediscovery in Ecuador | Gaia Gazette

  4. Pingback: New Colombian monkey discovered, already threatened | Dear Kitty. Some blog

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