Interesting facts about the immortal jellyfish
• Interesting facts about the immortal jellyfish
Turritopsis dohrnii jellyfish the size of a little finger live forever. When you receive a serious injury a transparent body with a red stomach turns into a drop, from which small polyps grow. And then in the free-swimming jellyfish bud clones. Just when it arrives and begins to feel the approach of old age. Due to this ability is actually immortal jellyfish.
transdifferentiation Turritopsis dohrnii - a rare biological mechanism. In the human body cells of the same type, for example muscular, can not be transformed into the other, for example, in nerve tissue. In humans, this ability is only for stem cells. Medusa also transforms your cell as you wish: the muscle can become eggs or sperm, and are converted into nerve muscle. Analogues of this mechanism in the animal world no. It is as if the chicken in a critical situation turned into an egg and butterflies - in caterpillars.
Medusa Turritopsis dohrnii - a subject of great interest to scientists investigating stem cells. In humans, only stem cells can regenerate into any type of cells and tissues, so they are irreplaceable. If the scientists manage to unravel the secret of cellular jellyfish, humanity will get rid of many diseases and even aging win. And recent genetic experiments with mice confirm this.
The Immortals Turritopsis dohrnii prefer not to lie on the bottom, and travel. Often these creatures cling to cargo ships and overcome vast distances. Scientists call jellyfish "excellent hitchhikers." It has an excellent withstand travel and adapts to its environment. But if the environment is not suited to her, you know - it turns into a drop and begin the life cycle again. Because of the love for traveling Turritopsis dohrnii took a decent part of the ocean. Initially, they lived in the Pacific Ocean, but because of migration to the cargo ships and the discharge of ballast water today jellyfish found in waters of all oceans. The invasion went unnoticed because the tiny jellyfish. Despite the fact that all kinds of genetically Turritopsis dohrnii identical, they are differently adapted to the environment. For example, in the tropical waters of live jellyfish with eight tentacles, and creatures from temperate latitudes grow a 24 "tail."
jellyfish was discovered by chance in the late XX century. Two student-biologist brought in the laboratory of Professor Fernando Boeyro gidrozoan - small carnivorous invertebrates. These beings are in their two cycles of development: polyps and jellyfish adults. The researchers grew them in the laboratory, conducted experiments and get away. The next time one of the scientists looked at the bank, he was shocked at the bottom of the polyps grow again. The researchers made an urgent report on the second workshop Gidrozoanskogo society. Scientists have embraced the news coldly and agreed that such regeneration is impossible, but researchers have simply made a mistake in the calculations.