June 10, 2021 5:26:16 PM
A microscopic animal called rotifer was brought back to life after being frozen in Siberia for 24,000 years and then managing to clone itself, Russian scientists said Monday. Stas Malavin, co-author of an article in the magazine Current biology to development says AFP The discovery raises fascinating questions about the mechanisms the multicellular animal has used to support its long rest.
“Our report is the strongest evidence yet that multicellular animals could survive tens of thousands of years in cryptobiosis, the almost completely stopped state of metabolism,” said Malavin of the Pushchino Institute of Physical Problems, Russia. .
The research team used an oil rig to collect core samples from the Alazeya River in Russia’s Arctic, and then used radiocarbon dating to determine the sample’s age between 23,960 and 24,485 years.
They had previously identified unicellular microbes capable of similar performances.
With regard to multicellular organisms, a 30,000-year-old roundworm has been reported to have been brought back to life, and mosses and some plants have also been regenerated in the ice after thousands of years.
Rotifers can now be added to the list of organisms that can seemingly survive indefinitely, Malavin said.
Once thawed, the animal was able to reproduce asexually using a process called parthenogenesis.
Rotifers are about half a millimeter long and usually live in freshwater environments.
Its name is derived from the Latin for “wheel carrier”, which comes from the crown around its mouth that resembles spinning wheels. They use them for travel and for eating.
“We can use this organism as a model to study frost and drought survival in this group and compare this group to other tough animals like tardigrade, nematode and so on. Malavin added.
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In the forests of Siberia: February – July 2010