For centuries, people have tried to broaden my horizons, learn about the world, to find answers to their many questions.What is the meaning of life and existence?Is there a higher intelligence?What happens after death?On these issues we guessed the greatest minds of our planet throughout their life.In this article we will look at, perhaps, not as philosophical, more mundane, but no less interesting question.We'll talk about jellyfish, but rather, how to breed jellyfish.
ruled the seas
They have neither brains, nor bones, nor blood.Nevertheless, their appearance and flourished actively proliferate.More than six hundred million years they lived in the deepest recesses of the ocean and dark.Now they swarms supersede the various forms of life and destroying aquatic ecosystems.Yes, you read that right, in this article we will talk about the beautiful, mysterious and deadly creatures - jellyfish.If you add some specifics - unveil the veil of secrecy and tell you how to breed jellyfish.
wonderful creation of nature, or a ruthless killer?
Many feel completely safe jellyfish creatures.But it is not so!They - the terrible predators that eat marine inhabitants (various crustaceans, zooplankton, eggs and so on. D.).Jellyfish are using a deadly weapon - their tentacles - in order to get food.Do you think that these tentacles are completely safe for humans?Certainly not.Stinging cells that are on them, in contact with human skin is left painful burns.But that's not the worst.There are rare species of jellyfish, contact with which can lead to death.These include sea wasp, Portuguese ship and Nomura jellyfish.
As already you can understand, the jellyfish are not as harmless as it seems at first glance.You doubt it?As evidence, we bring events that take place in Japan for more than 10 years.The Japanese Coast because of the constant flood jellyfish Nomura has become a dead zone.What is the reason for such activity?The same question set by researchers from the University of Hiroshima.In order to find out what was going on, I had to understand and learn how jellyfish proliferate.But now Japanese scientists know for certain that the culprit was global warming.You can not imagine how the temperature rise due to the increase in the number of jellyfish?To understand this, it is necessary to delve into the nature of these creatures, learn how to breed jellyfish.This will help you in this article.
How to breed jellyfish?
males produce sperm, a female - egg.During fusion of sperm and egg formed planula, settle to the bottom.What it is?Planuly, or, more simply, the larva - a phase of the life cycle of some animals.Normally, during the development of the larvae lends itself to various metamorphoses and transformations.For planula jellyfish it turns into a polyp, which is representative of the asexual generation.When a polyp reaches maturity from him by budding young creatures are beginning to come off.
life cycle of jellyfish is metagenesis.As you can learn from a school biology course, is a form of life-cycle, which is inherent in some animals.Metagenesis essence lies in the fact that asexual generations and generations that reproduce sexually, regularly alternate.
Description jellyfish breeding, species
As already described above, most jellyfish reproduce sexually.However, the majority - that's not all.In nature, there are species that reproduce by budding.Learn more about them you can in this part of the article.
Certain hydroid jellyfish able to reproduce by transverse fission or budding.Hydroids jellyfish - small (up to three centimeters) animals, which have tentacles, small campanulate umbrella and long mouthparts proboscis.Perhaps this particular class Hydrozoa and end.Overall hydroid jellyfish are very similar to their counterparts.They are also predators, feed mainly on crustaceans, have practically the same structure and so on.The only difference is in the method of reproduction.
