Why can cicadas make sounds? How do cicadas make sounds

Cicadas make sounds through membrane vibrations, but only male cicadas can make sounds.

The cicada has a thin articulatory membrane under its abdomen, which is divided into two chambers, the large chamber has a fold membrane and a mirror membrane, and the small chamber tympanic membrane is located in the body. When the tympanic membrane muscle of the insect's chamber contracts up to 10,000 times per second, it causes the ventricular hair fold membrane and the mirror membrane to vibrate, resulting in a loud sound.

Cicadas are hemiptera cicadas found in temperate and tropical regions, inhabiting deserts, grasslands, and forests. The larvae of cicadas live in the soil and have a pair of strong digging forefeet that use their stinging mouthparts to suck the sap of plant roots; In late July, female adults begin to lay eggs, and the peak oviposition period is in early and mid-August.

What is the reason cicadas don't have hearing? He has no demons and no ears, and even if it has ears, it cannot hear sounds.

The cicada's articulator is at the base of the abdomen, like a large drum covered with a layer of eardrum, and the eardrum is vibrated to make sounds.

Because the sound muscle can expand and contract about 10,000 times per second, and the gap between the cover or disturbance plate and the eardrum is empty, which can play a resonant role, its sound is particularly loud. It can take turns to use a variety of different tones to sing passionately, and the female cicada's musical instrument structure is incomplete and cannot make a sound, so it is a "dumb cicada", and the female cicada does not have a vocalizer, so it becomes a "dumb cicada."

On both sides of the anterior abdomen of the male cicada, there is a large, round sound cap, and there is a sound capsule and articulatory membrane like a drum skin underneath. When the muscles in the inner wall of the articulatory membrane contract and vibrate, the cicada makes a sound.

The sound of the cicada comes from the abdominal muscles. The articulator is in the abdominal muscles, like a large drum covered with a layer of tympanic membrane, the eardrum is vibrated and produces sound, because the sound muscle can be expanded and contracted about 10,000 times per second, and the cover plate and the eardrum are empty, which can play a resonant role, so its sound is particularly loud.

The cicada is composed of four parts: head, thorax, abdomen, and wings, each of which has different characteristics: the wings are called membranous wings, the head has compound eyes, mouthparts, sucks tree sap, and the abdomen is long cone-shaped.

The cicada has two pairs of membranous wings, essentially the same shape, with a broad, short head with a distinctly prominent frontal-labial base; Visual acuity is quite good, the compound eyes are not large, located on both sides of the head and widely separated, and there are 3 monoculars. The antennae are short and whiskered.

Cicadas are deaf and cannot hear anything.

Fabre, the famous French entomologist, spent a lot of time studying cicadas. But why do cicadas love to sing so much? He couldn't figure it out. He used to stand quietly behind the cicada, talking loudly, whistling, slapping, throwing stones, and the cicada continued to sing without care.

Fabre simply found two earthen guns and fired them next to the cicada, and although the sound was like a thunderbolt, the cicada still sang loudly. Fabre concluded that the cicada did not have the ability to hear the pena, and that it could not even hear its own sounds.

Characteristics of life

The larvae of cicadas live in the soil, and after the larvae become adults, they will live on trees. They are louder in summer and feed mainly on tree sap.

Adult cicadas like to suck the sap of trees, and using the stinging mouthparts to suck can weaken the tree, cause the branches to die, and affect the growth of the tree. At the same time, male cicadas can chirp, and each cicada's call is different. Generally, the cicada's articulator is in the abdominal muscles, like a large drum covered with a layer of eardrum, and the eardrum is vibrated to make sounds, while female cicadas do not chirp.

Cicadas are vocal by the articulators on their abdomen.

Male cicadas have articulators on their abdomen and can continuously produce high-pitched sounds. Female cicadas do not make sounds but have articulators on their abdomen. The larvae live underground and feed on the roots of plants, and the adults eat the sap of plants.

Cicadas are incomplete, consisting of eggs and larvae, which become adults after a molt and without going through the pupal period.

The cicada is a male cicada, its articulator is at the base of the abdomen, like a large drum covered with a layer of tympanic membrane, the eardrum is vibrated and makes sound, because the vocal muscle can be expanded and contracted about 10,000 times per second, the cover plate and the eardrum are empty, and can play a resonant role, so its song is particularly loud. And can take turns to sing passionately in a variety of different tones. Because the female cicada's musical instrument structure is incomplete and cannot make sounds, it is a "dumb cicada".

Cultivation methods

Cicadas should first provide enough nutrients to the woods. Cultivating forests should start with seedlings of broad-leaved trees. Broad-leaved trees such as willows, poplars, and elms can be planted, with a shorter trunk and covered with a nylon net.

Adults collected in the summer are placed on a tree in the net chamber to lay eggs, and then the eggs are collected; Branches with cicada eggs collected in autumn are also buried in the roots of the tree in the netting room.

It can also be combined with planting fruit trees to raise cicadas. For example, you can plant 300-660 square meters of peach trees, set the trunk lower, fence the peach orchard with welded nets, and cap it with nylon nets on the top, and stock the cicada adults in the peach orchard, and bury cicada eggs at the roots of the peach trees.

The cicadas drank the clear dew with their heads down and cries from the tall plane trees.

It is located in a high place, and the sound can naturally travel far away, not with the help of the autumn wind.

2."Cicada" is a five-character ancient poem written by the Tang Dynasty poet Yu Shinan, which is a poem with the meaning of things. Original:

Drink the dew, and the sound of dredging is out.

Raising his voice from afar, not by the autumn wind.

3.Notes:

淌 (ruí): The ancient official hat is knotted and drooping, and the head of the cicada has tentacles that stretch out, and the shape is like a drooping crown tassel. It also refers to the thin beak on the chin of the cicada, which resembles a hat band.

Dew: Pure dew. Drinking dew: The ancients believed that cicadas were noble in nature and drank dew when they dwelled high, but they actually sucked the sap of plants.

Stream: Emitted. Flowing sound: refers to the cicada singing endlessly, and the sound travels far away.

Tung tree: Tall sycamore.

Contiguous: refers to perching on a high place, pun intended.

藉 (jiè): to rely on, to rely on.

The implication is that the gentleman should be as high and distant as the cicada, and do not have to rely on or be subject to other things. It expresses the poet's enthusiastic praise and high self-confidence for people's inner character, and shows a graceful and unhurried demeanor.

The sound made by the wings rubbing against each other.

Because it is known that there is an eardrum and a voice emitter under the abdomen, it can produce sound continuously. And although the mother knows that there is also a sounder, it can't make a sound. It is known that the signal to find the opposite sex through the sound it makes, and the mother will come to it when she hears it, and come to its side to mate the tail, and after the tail is coordinated, the mother will lay eggs on the branches of the tree and reproduce offspring.

Because it is known that there is a tympanic membrane and a voice generator under the abdomen, the hidden shirt can make a continuous sound. And although the mother knows that there is also a sounder, it can't make a sound. It is known that the signal to look for the chirality of the abnormal foci is made by making the sound of the collapse, and the mother will come to the side of it after hearing it, and after the mother knows that it will lay eggs on the branches of the tree and reproduce offspring.