How does a cricket sing? Detailed answer

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How does a cricket sing? Detailed answer

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How does a cricket sing?

The cricket has a special human affection. In many countries there is a superstition associated with this insect. So, for example, a cricket living in your house brings happiness, and if he leaves you, then this is a bad omen. In Italy, North Africa and Japan, crickets are kept in cages because people love listening to their fun tunes!

But the cricket doesn't actually sing. He is a violinist! It makes sounds by rubbing the sharp side of one prewing against the surface of the other. Only males play their tunes. They chirp all day, as they attract females with this music. Imagine what it would be like if boys played the violin all day to attract girls!

Crickets have sharp eyes that are located on their legs instead of their usual head location. Their antennae are very long, and their legs are specially adapted for jumping.

The domestic cricket (sometimes called the fireplace cricket) is an inhabitant of Europe. It was introduced to the New World many years ago and is now found in many parts of the United States.

It is a small insect, about 3 cm long, greyish-yellow in color with brown spots. He lives in residential buildings. Crickets love warmth and are often found near fireplaces, where they hide in cracks between rocks or floorboards. The field cricket is larger and almost black in color. He makes a small depression in the ground - this is his house. During courtship, the male perches at the entrance and chirps. There are also tree crickets. They especially like low tones in music.

Farmers are terrified of cricket larvae, as they eat the leaves of bushes, vineyards and trees on which they hatch.

Did you know that Chinese crickets are bred to fight each other in cricket fights and people watching them make bets on who will win?

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Where did the first mirror appear?

Have you ever looked into the water of a lake? Did you see the reflection of the trees and the sky there? Essentially you were looking in a mirror. After all, a mirror is a smooth surface that reflects light and other objects.

It is very important that its surface is smooth. The smoother it is, the better the reflection. When the breeze ruffles the water, you can only see the sun's reflections - and no other objects.

In ancient times, mirrors were made of polished metal. Now the mirror is made of smooth glass with a layer of metal on the back. The glass itself is not yet a mirror: the reflection gives us a narrow layer of silver, and the glass only protects it from scratches and damage.

We will never know when a man came up with a mirror. Probably, he also often looked into the smooth surface of the pond and saw himself there. Perhaps, by chance, he learned that the polished metal can also reflect objects. One fine day (we know almost certainly that a woman suggested this idea) a person began to specially polish pieces of metal and give them the desired shape. So there were mirrors.

And in the times of ancient Greece, Egypt and Rome, people already widely used mirrors. Even then they had small pocket mirrors that were comfortable to carry around. They were made from a circular plate of metal: copper, bronze, silver and gold.

Just as a child is surprised when he sees his own reflection, ancient people were surprised in the same way. They did not know how a reflection is obtained, so they attributed magical powers to mirrors. They thought that what they see in the mirrors is their spirit. Thus arose the superstition that if you break a mirror, it can harm the Spirit.

The first who guessed to make glass mirrors with a layer of mercury or tin were the Venetians. By 1300 they were producing such mirrors, and they soon replaced the metal plates. We use them to this day.

Test your knowledge! Did you know...

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Neanderthals were doomed 01.03.2012

A group of Swedish and Spanish researchers from Uppsalla, Stockholm and Madrid reported in the journal Molecular Biology and Evolution the news that "whitewashed" our African ancestors - according to scientists, Neanderthals themselves began to rapidly die out long before the first foot of a modern man set foot on their territory. .

Until now, it was believed that Neanderthals lived steadily in Europe for hundreds of thousands of years until our ancestors got tired of Africa. Now it turns out that it wasn't quite like that. According to scientists, Neanderthals began to die out sharply somewhere around 50 thousand years ago. After most of them died out, a small group of surviving Neanderthals populated the central and western parts of Europe, where they managed to live for another ten thousand years, until the Cro-Magnons, modern people, appeared on the scene.

This assumption was made by the Swedish-Spanish group on the basis of data obtained during the study of the DNA of Neanderthals. According to them, European Neanderthals, who lived during the last ten thousand years before the advent of modern man, have very small genetic differences. Their genomes differed even less than the genomes of the inhabitants of today's Iceland differ. This means that the DNA almost did not mutate, that is, the Neanderthals themselves did not adapt in any way to the sharp climatic changes of that time and therefore were already doomed from the very beginning.

Older fossils of European Neanderthals show much greater genomic variation - about the same level as that recorded in Asian Neanderthals and representatives of today's humanity. It is still completely unclear why the DNA of European Neanderthals 50 thousand years ago was suddenly attacked by such literally murderous conservatism.

Paleogenetics is a very difficult task. Researchers are dealing with very time-destroyed DNA, from which it is extremely difficult to extract at least some information. Scientists had to resort to the help of a wide variety of experts - statisticians, experts in modern DNA sequencing, paleoanthropologists, IT specialists, etc. from Denmark, Spain and the USA. To get to the genetic information about Neanderthals, they needed special laboratory equipment, special computational methods. From such interdisciplinary cooperation, they expect no less amazing discoveries about the life of our great-ancestors.

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