Extinct toad rediscovered after hiding for 133 years in Sri Lanka
Jeremy Hance
A small toad not seen since 1876, and considered by many to be
extinct, has been rediscovered in a stream in Sri Lanka.
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The Kandyan dwarf toad hadn't been
seen for over a century until researchers stumbled on it in
2009. Picture courtesy L J Mendis Wickramasinghe |
First recorded in 1872, the Kandyan dwarf toad had (Adenomus
kandianus) vanished for over a century before being found by scientists
during a survey in 2009 in the Peak Wilderness Sanctuary, according to a
new paper in Zootaxa.
“During a nocturnal sampling session, about four specimens of an
unusual species were observed, from the Peak Wilderness Sanctuary on
October 23, 2009, which were sympatric with Adenomus dasi on rocks close
to fast flowing streams where a single specimen was collected in order
to taxonomically clarify its identity,” lead author L J Mendis
Wickramasinghe with Herpetological Foundation of Sri Lanka told
mongabay.com.
After being collected, however, the individual was found to not be
the closely-related Adenomus dasi, but the long lost Kandyan dwarf toad.
The genus Adenomus is only found in Sri Lanka and comprises just three
species. Although the discovery is worth celebrating, Wickramasinghe
cautions that the species is likely close to extinction.
“It's most likely that this population will be categorised as a
Critically Endangered population in future updates of the IUCN Red List
of Threatened Species,” Wickramasinghe said.
Wickramasinghe and his team were in the region to survey land-based
amphibians because “not much light has been shed on their diversity by
scientists, because of the difficulty to reach these sites due to harsh
weather conditions and tough trails.”
Wickramasinghe hints that the rediscovery of the Kandyan dwarf toad
(Adenomus kandianus) may not be the last of supposed extinct frogs found
on the island-nation.
“Although Sri Lanka carries the dubious distinction of contributing
the highest proportion (60 percent), to the global list of extinct
amphibians, I must say there are several others that are yet to be
updated and will be published in the near future,” he said.
Courtesy: Mongabay.com
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