In this photo released by www.frogindia.org, a chikilidae egg is shown in the soils of northeast India. Since the age of dinosaurs the chikilidae has burrowed unbothered beneath the monsoon-soaked soils of remote northeast India, unknown to science and mistaken by many villagers as a deadly, miniature snake. Their discovery, published Wednesday in a journal of the Royal Society of London, gives yet more evidence that India is a hotbed of amphibian life with habitats worth protecting against the country's industry-heavy development agenda. (AP/ www.frogindia.org, Sathyabhama Das Biju)
Since before the age of dinosaurs it has burrowed unbothered beneath
the monsoon-soaked soils of remote northeast India - unknown to science and
mistaken by villagers as a deadly, miniature snake.
But this legless amphibian's time in obscurity has ended, thanks to an
intrepid team of biologists led by University of Delhi professor Sathyabhama
Das Biju. Over five years of digging through forest beds in the rain, the team
has identified an entirely new family of amphibians - called chikilidae -
endemic to the region but with ancient links to Africa.
Their discovery, published Wednesday in a journal of the Royal Society
of London, gives yet more evidence that India is a hotbed of amphibian life
with habitats worth protecting against the country's industry-heavy development
agenda.
It also gives exciting new evidence in the study of prehistoric
species migration, as well as evolutionary paths influenced by continental
shift.
"This is a major hotspot of biological diversity, but one of the
least explored," Biju said in an interview with The Associated Press.
"We hope this new family will show the importance of funding research in
the area. We need to know what we have, so we can know what to save."
His first effort in conserving the chikilidae was to give it a
scientific name mirroring what the locals use in their Garo language. The
chikilidae is a caecilian, the most primitive of three amphibian groups that
also include frogs and salamanders.
"We hope when the locals see the name, and their language, being
used across the world, they will understand this animal's importance and join
in trying to save it," Biju said. "India's biodiversity is fast
depleting. We are destroying these habitats without mercy."
The chikilidae's home in long-ignored tropical forests now faces
drastic change under programs to cut trees, plant rice paddy, build roads and
generate industry as India's economic growth fuels a breakneck drive in
development. More industrial pollutants, more pesticides and more people
occupying more land may mean a world of trouble for a creature that can be
traced to the earliest vertebrates to creep across land.
Biju - a botanist-turned-herpetologist now celebrated as India's
"Frogman" - has made it his life work to find and catalog new
species. There are too many cases of "nameless extinction," with
animals disappearing before they are ever known, he said. "We don't even
know what we're losing."
Amphibians are particularly vulnerable, and have drastically declined
in recent decades. The same sensitivity to climate and water quality that makes
them perfect environmental barometers also puts them at the greatest risk when
ecological systems go awry.
Biju, however, is working the reverse trend. Since 2001, he has
discovered 76 new species of plants, caecilians and frogs - vastly more than
any other scientist in India - and estimates 30-40 percent of the country's
amphibians are yet to be found.
Within the chikilidae family, the team has already identified three
species, and is on its way to classing three more, he said.
The chikilidae's discovery, made along with co-researchers from
London's Natural History Museum and Vrije University in Brussels, brings the
number of known caecilian families in the world to 10. Three are in India and
others are spread across the tropics in Southeast Asia, Africa and South
America. There is debate about the classifications, however, and some
scientists count even fewer caecilian families.
Because they live hidden underground, and race off at the slightest
vibration, much less is known about them than their more famous - and vocal -
amphibious cousins, the frogs. Only 186 of the world's known amphibious species
are caecilians, compared with more than 6,000 frog species - a third of which
are considered endangered or threatened.
Even people living in northeast Indians misunderstand the caecilians,
and rare sightings can inspire terror and revulsion, with farmers and villagers
chopping them in half out of the mistaken belief that they are poisonous
snakes.
In fact, the chikilidae is harmless, and may even be the farmer's best
friend - feasting on worms and insects that might harm crops, and churning the
soil as it moves underground.
Much remains to be discovered in further study, Biju said, as many
questions remain about how the creatures live.
So far, Biju's team has determined that an adult chikilidae will
remain with its eggs until they hatch, forgoing food for some 50 days. When the
eggs hatch, the young emerge as tiny adults and squirm away.
They grow to about 4 inches (10 centimeters), and can ram their hard
skulls through some of the region's tougher soils, shooting off quickly at the
slightest vibration. "It's like a rocket," Biju said. "If you
miss it the first try, you'll never catch it again."
A possibly superfluous set of eyes is shielded under a layer of skin,
and may help the chikilidae gauge light from dark as in other caecilian
species.
DNA testing suggests the chikilidae's closest relative is in Africa -
with the two evolutionary paths splitting some 140 million years ago when
dinosaurs roamed what was then a southern supercontient called Gondwana, since
separated into today's continents of Africa, Antarctica, Australia, South
America and the Indian subcontinent.
Biju's team worked best during monsoon season, when the digging is
easier and chikilidae lay eggs in waterlogged soils. Gripping garden spades
with blistered hands, the researchers along with locals they hired spent about
2,600 man hours digging for the elusive squiggles, usually found about 16
inches (40 centimeters) deep.
"It was backbreaking work," said research fellow Rachunliu
Kamei, who even passed out in the forest once, and some days found not even one
specimen.
"But there is motivation in knowing this is an uncharted
frontier," said Kamei, lead researcher and main author of the study paper.
