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Off the Record
Tale of a cave and 31 new, bizarre species of life
LONDON: An underground Romanian cave hidden from the outside world for five million years has yielded 31 new and bizarre species of life, a British newspaper reported on Wednesday, says Reuter.
The Movile Cave In Dobrogea. west of the Black Sea. has never seen the light of day, yet supports an entire ecosystem dependent on sulphur-laden groundwater for its existence. the Independent newspaper said.
The newly discovered creatures include blind spiders, leeches and water scorpions.
Serban Sarbu. a Romanian-born biologist now working at the University of Cincinnati in the United States, started exploring the cave when it was accidentally uncovered by construction work in 1986, the newspaper reported.
Sarbu said he fled former Romanian leader Nicolae Ceausescu's government and was only able to return to the cave after Ceasusescu's death.
"All the food is being produced inside the cave, using the energy that results from the oxidation of hydrogen sulphide," the newspaper quoted Sarbu as saying.
It Joints a very select group of ecosystems that do not depend in some way on sunlight. The only others are tens of thousands of feet (thousands of metres) underwater, living off the heat and chemicals pumped out by undersea volcanoes.
Creatures in the underwater systems include shrimp with no eyes, eel fish, crabs, mussels and tube worms.
The Movile Cave is considered so delicate that only three people are allowed in at any one time. Visitors must change their clothes on entering to avoid bringing In microbes from the outside world.
Useful mouse
NEW YORK: Scientists have created a strain of mice that lack a key component of a brain communication system — a step that could shed light on drug addiction, Parkinson s disease and schizophrenia, reports AP.
The miqe will help researchers understand brain cell circuits that communicate with a chemical messenger called dopamine.
In these circuits, one brain cell signals another by releasing bits of dopamine. Then it retrieves the dopamine with a structure called dopamine transporter, which terminates the signal.
Mice in the newly created strain have no dopamine transporter because of agenetic defect. As a result, dopamine persists 300 times longer than usual in the tiny spaces between nerve cells, delivering Its signal for an abnormally long time, said researcher Marc G Caron.
That makes the mice hyperactive, as if they'd been given cocaine or amphetamines, said Caron. Howard Hughes Medical Institute investigator and professor of cell biology at the Duke University Medical School in Durham. North Carolina.
The animals did not get more active when they were given cocaine or amphetamines. That confirms previous indications that those drugs affect the dopamine transporter. scientists’said.