it has no intestines, eyes and even the brain – only a short blind and mouth closed intestine. Nobody saw it feeds the creature .
In the Pacific, four individuals of unusual organism were found, and the researchers concluded that it is one of the most primitive representatives deuterostome animals. The study is published in the journal Nature.
The head of the research group of Professor Greg Rose of Skrippskogo Institute of Oceanography in the US said that until now scientists have called this being a “purple toe cap.” “Imagine a sock thrown on the floor – that’s what they look like. Or how deflated balloon “, – he said
Scientists have discovered on the ocean floor, possibly the earliest form of life -. Sea worms, resembling in appearance lying on the seabed” purple socks. ” Worms Xenoturbella were first found in the coast of Sweden some 60 years ago.
Genetics ranked Xenoturbella worm to the shellfish on the basis of DNA analysis. In addition, experts on the basis of genetic analysis, reported that “purple socks” split from the evolutionary tree of all other multicellular very, very early.
According to experts, the primitiveness Xenoturbella due to their antiquity.
xenoturbella was discovered in 1949. This creature has no eyes, brain and intestines – only one, relatively small open mouth, in which first enters the food, and then out of it is allocated droppings
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Early DNA tests incorrectly indicated that the creature is related to shellfish. “But it turned out that they copy the DNA of their food,” – says Professor Rose
Some scientists believe that this is a once-a more developed body, which is in the process of evolution got rid of all was unnecessary body parts <.. /> p>
However, recently discovered in the Pacific ocean depths Xenoturbella allowed researchers to study them more closely.
With the help of remotely operated vehicles they were able to remove Xenoturbella in their natural habitat.
Among the others have been found a new, previously unknown and relatively large specimen, which was named xenoturbella monstrosa.
It was also found xenoturbella churro, named after the Spanish varieties donut as externally (but, of course, not taste) it is like him.
Scientists have also been able to conduct a more thorough analysis of DNA. “We have confirmed that they are part of a very primitive group,” – says Professor Rose
Xenoturbella takes in the family tree of the place in its very foundation, it continues: “The important branch of evolution are now enriched with not one but. four new species »
But do not rush to the conclusion that all the secrets of” purple toe “revealed
« We have never seen him eat, -.. says professor Rose. – We find it where shellfish live, we find inside Xenoturbella DNA molecule of these molluscs. But the autopsy it turns out that their insides are empty »
The research team hopes that the next expedition will be able to get more information about these strange inhabitants of the ocean depths
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