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There has not been a recorded sighting of the Bornean rainbow toad (Ansonia latidisca) since 1924. Now, researchers announce they have seen three of them in the Penrissen region of Borneo, and they have photographs to prove it.
Initial searches by Indraneil Das of Universiti Malaysia Sarawak and colleagues took place during evenings after dark along the high rugged ridges of the Gunung Penrissen range of Western Sarawak. The first few months proved fruitless; so the team decided to include higher elevations in their search. And one night last August on of Das’ graduate students, Pui Yong Min, found one of the three gangly toads up a tree.
If you want to see newly rediscovered frog, however, it’s probably best to look at the photos, as Das has said he won’t divulge the exact site of the rediscovery right now, owing to the intense demand for brightly-colored amphibians by those involved in the pet trade.
The effort was part of the global search for lost amphibians by Conservation International, the International Union for Conservation of Nature (IUCN) Amphibian Specialist Group, with support from Global Wildlife Conservation. The large search involved 126 researchers who scoured areas in 21 countries, on five continents, between August and December 2010.
Link -via the Presurfer
(Image credit: © Indraneil Das)
Zoologists implanted frogs with radio transmitters. The result was that most of the transmitters were found in the frogs’ bladders or fully excreted. Further experimentation indicated that certain species of frogs and toads have bladders that can detect, surround, and excrete foreign objects. At Wired, Dave Mosher writes:
They enlisted five green tree frogs and five cane toads, implanting small inert beads in each the same way they implanted the radio transmitters. Each tree frog expelled its bead within 23 days. One cane toad also gave its bead the boot, and the beads in the other four toads had migrated to their bladders.
To unravel the secrets of the process, the zoologists implanted beads in 31 more cane toads, toxic amphibians native to South America but introduced to northeastern Australia in 1935 to control beetle infestations. (Since then, Shine says, the toads have become invasive and poisoned populations of large predators such as pythons. As a result, ecologists now closely track their numbers and behavior.)
Toads dissected on sequential days revealed that the bladder grew a thin offshoot of cells to surround the bead, which later developed into mature, bladder-like tissue and merged with the organ’s main cavity. From there, they “floated freely in the urine” and were peed out if near the bladder’s opening.
Link | Photo by Flickr user Sam Fraser-Smith used under Creative Commons license
Tiny pebble toads have a unique defensive strategy against tarantulas that involves freefalling like a rubber ball.
The above footage is from the "Reptilians and Amphibians" episode of BBC Life, a new epic nature documentary series in the ilk of Planet Earth. The episode also features the incredible Jesus Christ Lizard that walks on water and the unsinkable pygmy gecko.
– via bbc
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