Scientists from the University of St. Petersburg studied the muscular and abdominal systems of the external reproductive system of rhizocephalus, which turned from other crustaceans into zombies. They infect the host and completely take over it, after which an externa is formed on its body – a kind of framework in which the parasite larvae develop. Although scientists all over the world study these magnificent animals, the physiology of the ectopic region remains poorly researched. This issue was reported to socialbites.ca in St. It was explained at St. Petersburg State University.
Rhizocephalans or rhizocephalans are unique parasitic crustaceans that live in seas around the world. The female rhizocephalus infects the host by injecting a small group of cells that then develop into the interna, a system of processes in the host’s body cavity. They take over by penetrating various systems of the host’s body. Rhizocephali can cause parasitic castration by altering the behavior and morphology of infected hosts and also affect their metabolism. Thus, the stem of the adult rhizomes regenerates without inheriting anything from the larva.
After the formation of interna, externa begins to develop – the second part of the body of the female rhizome, located above the integument of the host. This is the chamber where the male rhizocephalus injects the remaining residue from the male larva. Therefore, neither the male nor the female retains the characteristic features of the owner.
Scientists still do not know how nutrients from the interna reach the developing larvae. To answer this question, researchers used modern imaging techniques.
“Probably, when the circular muscles contract, the outer part also contracts, the lumen of the lacunae narrows, and the fluid from the outer lacunae is thrown into the interior. When the muscles relax, the outer part flattens and the cavities widen. In this case, after the fluid is mixed in the interna, it begins to be passively pumped into the cavities in the externa. In addition, it helps connect the externa to the interna. we also identified circular muscles at the base of the externa and in the shank. Apparently, they can block the lumen of the shank and limit the movement of fluid either only within the externa, or, on the contrary, prevent it from entering the externa from the interna so that the fluid from the interna has time to mix with the interna ., an employee of St. Petersburg University told socialbites.ca Natalya Arbuzova.
Previously in Russia started Create the perfect flock of sheep.