Bdelloid rotifers generally live in aquatic environments and have incredible survivability. Russian scientists have found the creature in frozen soil cores extracted from the frozen Siberian strata using drilling rigs.
Stas Malavin, a researcher at the Soil Cryology Laboratory at the Pushchino Scientific Center for Biological, said: “Our report is the hardest proof to date that multicellular animals are resistant to tens of thousands of years of cryptobiosis. which is a state of almost complete metabolism” research in Russia
previous research Other groups have shown that rotifers can survive for up to 10 years when frozen. in a new study Russian researcher Radiocarbon dating was used to determine how the animals they recovered from frozen soil ̵1; ground that freezes year round. Other than a thin layer near the surface – about 24,000 years old.
This is not the first time that ancient life has been resurrected from a permanently frozen habitat.
A long-dead but well-preserved mammal. including the extinct cave bears and mammoths. It was discovered from the frozen soil layer that melted in some places. The consequences of the climate crisis
Malavin said larger life forms are unlikely to survive being frozen this way.
“What you should know is that Multicellular organisms can be frozen and stored for thousands of years. then returned to life The dream of many novelists,” Malavin said in a statement.
“Of course, the more complex the organisms It was even harder to keep it alive by freezing. and for mammals It’s not possible right now. Yet, to move from unicellular organisms to gut and brain organisms. even though it is microscopic It’s a big step forward.”
To understand how creatures survive in animation suspended on ice. Researchers have frozen and thawed modern rotifers that live in frozen soil. They found that the creatures were able to withstand the formation of ice crystals as they slowly froze.
Although rotifers do not survive the entire freezing process, But studies have shown that rotifers have some mechanism that can protect cells and their organs from harm at extremely low temperatures.