The oldest parasites in the shell of an ancient creature
From a scientific point of view, parasites are creatures that invade other organisms and use their life force for their own survival. These include fleas and lice, which live on the bodies of hosts and suck their blood. Also have roundworms, which can be picked up by eating raw meat — they will live in the digestive system to take nutrients and grow to enormous size. Today science knows a huge number of parasites, but when they emerged on our planet and what first came up to live the kind of life, scientists are still not clear. Fortunately, thanks to the hard work of Chinese scientists, the shroud of mystery is slowly beginning to appear.
Recently, research published an article that describes one of the first in the history of the acts of parasitism. This term is commonly understood as a phenomenon when the body uses someone else's body to sustain his life. It's kind of symbiosis, however, creatures do not get the mutual benefit in parasitism, only one organism benefits and develops, while another feels the lack of nutrients and gradually weakened.
Is Inside a person can also live parasites, and one of the most famous is the beef tapeworm (Taenia saginata). This worm can enter the body from poorly treated meat animals and subsequently the whole body to absorb the incoming human nutrients. Adult length bovine tapeworm can reach 10 meters. During the stay of the parasite in the digestive system, in humans there is a disease beef tapeworm infection. Its symptoms are pain in the abdomen, feeling of loose inside, nausea, headache, and frequent feeling of hunger. The man is clearly not enough nutrients, because most of it takes the parasite.
beef tapeworm in the flask.
Fleas, lice and roundworms is a modern parasites. It is logical to assume that they had an ancestor that invented the lead a parasitic way of life. Most likely, it was some kind of tiny worm in what lies the main difficulty in its detection. The fact that worms have no skeleton and other relatively hard body parts, so their time has not spared their remains to our days is simply not preserved.
The Remains have not survived, but who said that ancient parasites are unable to leave behind traces? Recently, Chinese scientists managed to find the remains of ancient invertebrate creatures known as brachiopods (Neobolus wulongqingensis). They are also known as brachiopods and resemble shellfish and their habitat are cold water. Today they are rarely where you meet, but millions of years ago, they were almost at every step.
it looks like an ancient shell with traces of vermin
The Brachiopods were attached and secured to the bottom by means of a special blade of grass — all this is clearly shown in the video below. On fossil remains, scientists have found traces of the parasites that were attached to the shells and blatantly steal the brachiopods nutrients. Researchers believe that the infected organisms were lacking these substances and could not grow to large sizes. Healthy organisms develop normally. Signs of parasitism are obvious.
It is believed that one of the first parasites lived about 540 million years ago — scientists came to this conclusion based on the age of the fossil remains of sea. We can say that parasitism arose in the Cambrian period, during which began to appear in the modern group of animals. About this important moment in the history of life on Earth a few years ago, wrote my colleague Ilya Hel — reading.
Perhaps leaving behind traces of parasites — not the first who invented so depressing victims way of life. It's clear that parasitism as a phenomenon has greatly affected the evolution of living creatures. It is a kind of butterfly effect — if once upon a time the parasites do not interfere with living creatures to evolve, evolution would have proceeded in a very different manner and the present animals would have looked not like now.
Parasites are able to exploit almost any creature. On this topic I recommend to read the article, which was written by Love Sokovikova — she told . Turned out very interestingly!
Diet on genotype can be a way out for many, but it still has a lot of questions Don't know what to do to lose weight? DNA tests promise to help you with this. They will be able to develop the most individual diet, because for this they will use the m...
If aliens exist, why don't we "hear" them? In the 12th episode of Cosmos, which aired on December 14, 1980, co-author and host Carl Sagan introduced viewers to the same equation of astronomer Frank Drake. Using it, he calculated the potential number ...
The pain caused to humans by the Gimpi-gympie plant can drive him crazy Many people consider Australia a very dangerous place full of poisonous creatures. And this is a perfectly correct idea, because this continent literally wants to kill everyone w...
a scene from the movie "Hachiko" Dogs are considered to be among the first Pets. Scientists still can't say for sure when exactly people have tamed these creatures, but the most common assumption States that this occurred between ...
In recent years, many began to sew medical mask Pandemic coronavirus turned everything so that the most popular products in the world steel PPE – antiseptics for hands, disposable gloves, and protective face masks. Now they sell t...
this octopus even have ears! Over the past 100 years of observations of the oceans, researchers are sometimes able to detect at great depth not only fish, but octopus. It was believed that cephalopods can swim to depths of up to 3...