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The whole truth about how jellyfish reproduce

From time immemorial people tried to expand their horizons, to know the world around them, to find answers to their numerous questions. What is the meaning of life and being? Is there a higher mind? What happens after death? Over these questions, the greatest minds of our planet have been wondering for the rest of their lives. In this article we will consider, perhaps, not such philosophical, more mundane, but no less interesting question. We'll talk about jellyfish, or rather, about how the jellyfish multiply.

Lords of the Seas

They have no brain, no bones, no blood. But nevertheless, their species flourished and actively multiplied. For more than six hundred million years, they lived in the deepest and darkest corners of the ocean. Now they flock out different forms of life in whole flocks and destroy water ecosystems. Yes, you are not mistaken, in this article we will talk about beautiful, mysterious and deadly creatures - jellyfish. If you add a little specifics - we will open the veil of secrecy and tell you about how the jellyfish multiply.

A wonderful creature of nature or a ruthless killer?

Many consider jellyfish to be absolutely safe creatures. But this is not so! They are terrible predators that feed on marine life (various crustaceans, zooplankton, caviar, etc.). Jellyfish use deadly weapons - their tentacles - in order to obtain food. Do you think that these tentacles are completely safe for humans? No matter how it is. Stinging cells that are on them, in contact with the human skin, leave painful burns. But this is not the worst. There are rare species of jellyfish, contact with which can lead to death. These include the Marine wasp, the Portuguese boat and the Nomura jellyfish.

As you could already understand, jellyfish are not as harmless as it seems at first glance. Doubt in this? As evidence, we can cite the events that have been happening in Japan for more than 10 years. The Japanese coast, because of the constant flooding of Nomura's jellyfish, has already become a dead zone. What is the reason for this activity? The same question asked researchers from the University of Hiroshima. In order to find out what the matter was, we had to understand and study how the jellyfish reproduce. But now, Japanese scientists probably know that global warming was the cause of everything. Can you imagine how the increase in temperature is due to the increase in the number of jellyfish? To understand this, you need to delve into the nature of these creatures, learn about how the jellyfish multiply. This article will help you in this.

How do jellyfish multiply?

Male specimens produce spermatozoa, female specimens - ovules. During the fusion of the sperm and the egg, a planulum settles on the bottom. What it is? Planned, or, more simply, the larva is the phase of the life cycle of some animals. As a rule, during development the larva lends itself to various metamorphoses and transformations. So, the jellyfish has turned into a polyp, which is the representative of the asexual generation. When the polyp reaches maturity, young creatures begin to break away from it by budding.

The life cycle of a jellyfish is a metagenesis. As you could learn from the school course of biology, this is one of the forms of the life cycle that is inherent in some animals. The essence of metagenesis lies in the fact that asexual generations and generations reproducing sexually alternate.

Description of jellyfish, breeding, species

As already mentioned above, most jellyfish reproduce sexually. However, most are not all. In nature, there are species that reproduce by budding. You can learn more about them in this part of the article.

Some species of hydroid jellyfish can reproduce by transverse division or budding. Hydroid jellyfish are small (up to three centimeters) animals that have tentacles, a small campanulate umbrella and a long oral proboscis. Perhaps, this is the feature of the Hydrozoa class and ends. In general, the hydroid jellyfish are very similar to their fellow humans. They are also predators, eat mainly crustaceans, have almost the same structure and so on. The only difference is in the way of reproduction.

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