How do golden cicadas perceive night underground, and why do they crawl out at night?

As a result of natural evolution, they have the ability to perceive day and night. Because there are many predators during the day, they are easy to catch and eat, so they only come out at night.

The golden cicada crawls out at night to feed, and the food on its diet will haunt at night, which is more conducive to hunting.

Cicadas can live underground for many years, and they eventually have to shed their shells to continue to survive, generally raining after the rain enters their burrows, and they will choose to come out at night, because the night is dark and there are fewer predators.

It is because some golden cicadas choose to travel in the dark in order to survive, and have evolved this function. If you crawl out during the day, you will be caught by other creatures. This is the survival of the fittest in nature.

There are many years, such as fifteen-year-old cicadas, and there is one year, some during the day, some at night, from the roots of some bushes, from the roots of tall trees, will also climb out.

It is because this animal has a very strong sense of direction and a very strong sense of smell, so it can crawl out at night.

Because there is a large difference in temperature between day and night, and the temperature change can often be felt underground, when the sun sets and the ground temperature becomes low, it is often known underground, and it will also climb out of the ground to perform a secret room and ventilation.

This is because when the cicada is underground, it will use its forefoot to make a small hole in the ground, and from this small hole, you can know whether it is day or night.

As for how cicadas (golden cicadas) distinguish between day and night, I believe that many people are more interested in it, as are their assistants. We all know that golden cicadas come out at night or at night. Generally, we can catch them with a flashlight after dinner, just in time to get them out of the hole.

Why, then, did they know it was dark when they were in the cave? On this issue, the little helper will talk about his point of view. It is right or wrong in three ways.

After reading it, you can express your opinion. Golden cicadas can sense changes in temperature through their senses or other aspects. For example, when the surface temperature is high during the day, the golden cicada can feel it in the hole.

When the temperature drops at night or at night, the surface temperature drops with it. When the golden cicada senses it, it burrows its hole. Maybe it's also afraid that the temperature is too high and won't change easily.

things, but after the change, one is underground and the other is above ground, but they can still communicate with each other through **.

Interested friends can observe that the call of the cicada is not the same in the morning, noon and evening, and the sound will be different (this opinion is found in an article, and its authenticity is uncertain). Therefore, at night or in the evening, when the underground golden cicada hears the call of different cicadas, it knows that it can come out of the hole (about this, some people say that the golden cicada is deaf and cannot hear sounds, but some people retort that the golden cicada can only hear sounds within a certain frequency fluctuation range, and only the golden cicada and the cicada can know each other, so they can communicate).

The natural "ability" golden cicada can perceive day and night, which is an innate "ability". Just like us humans, we can tell if the sun is day or night by watching it rise or set, and the golden cicada also has its references, but we don't know very well (it is estimated that in the world of the golden cicada, they do not know how humans judge day and night). So, in our opinion, there is something magical.

Maybe they didn't take that into account.

They can judge by how wet the land is, how warm the land is. This is due to the fact that the temperature of the land drops at night, so they realize that it is already night and can climb out.

The cicada chooses to emerge at night is undoubtedly the most beneficial for it, on the one hand, it can avoid the scorching sun, and on the other hand, it can avoid natural enemies with a high probability. The main way it judges day and night is through the light that comes through the small holes in the ground.

Mainly judged by humidity, golden cicadas also have a certain sense ability, which can also be judged by the temperature of the soil. This is also possible to avoid predators.

Summary. The golden cicada is a known larva, and when it mates in the summer, it lays eggs quickly, and then this life is over. The eggs will fall to the ground with the branches and leaves, and when they hatch larvae, they will choose loose soil to go underground, and then live underground for 3, 5, or 7 years.

When underground, the golden cicada will continue to burrow, often the depth of the cave from the ground is at least dozens of centimeters, and some will even enter the ground several meters deep, and then it has been living underground.

The golden cicada survives underground for many years before it comes out, isn't it afraid of being eaten?

The golden cicada is a known larva, and when it mates in the summer, it lays eggs quickly, and then this life is over. The eggs will fall to the ground with the branches and leaves, and when they hatch larvae, they will choose loose soil to go underground, and then live underground for 3, 5, or 7 years. When underground, the golden cicada will continue to burrow, often the depth of the cave from the ground is at least dozens of centimeters, and some will even enter the ground several meters deep, and then it has been living underground.

These golden cicadas that live underground need very little oxygen, because there is some oxygen in the soil, so it is enough for the golden cicadas to survive. As for the food**, it is still similar to **, it lives by sucking the sap of the roots of the tree, and generally undergoes 4 molts in the ground to fully develop, and then it begins to climb up continuously, just to complete the last molt on the ground.

Some people worry that the golden cicada will be eaten by ants in the ground, but in fact, this worry is unnecessary, because the ants can't eat the live golden cicada at all. Although ants live underground and like to eat the carcasses of some insects, they basically forage on the ground, and the golden cicada is dozens of centimeters deep in the underground burrow, and ants can't go so deep at all. What's more, when ants are foraging, they generally eat some dead animal carcasses, or insects that have been injured and are about to die.

A behemoth like a golden cicada, especially a living thing, is beyond the reach of ants.

I think this is the result of biological evolution and natural selection, because the golden cicada has a lot of natural enemies, in the process of evolution, those golden cicadas that come out in advance are eaten by its natural enemies, and over time, they may stay underground for a longer time in the future, and stay on the ground for a shorter time, which is an adaptation to nature and the result of natural selection.

Early worms are eaten by birds: We all know that the sloth, the reason why it can Zhaolu Zen enough to exist, is not because of how diligent it is, but how slow, it is this slowness that allows its race to continue, those fast-moving sloths are eaten by its natural enemies, so there is a saying "early birds have insects to eat, early insects are eaten by birds", is a relative existence, birds will starve to death if they don't get up early, insects will be eaten by birds when they get up early, it is estimated that the same is true of golden cicadas, and the golden cicadas that come out early have become a delicacy in other people's mouths, And the golden cicada that came out late was preserved, because the natural enemies were full, so it had a chance to reproduce, so that its inheritance was passed down from generation to generation, later and later.

Survival of the fittestThe law of nature is the survival of the fittest, the unfit are eliminated, the so-called survival of the fittest is the adaptability to the environment, people are the same, who can adapt more to the changes in society, who will get the chance to survive, nothing else, plants are like this, animals are the same, living underground for 3-4 years, for humans, it seems to be very sad, for the golden cicada, maybe it is a heavenly day, just like our human childhood, carefree, and finally grown, had to come out, looking for love, Just like we humans have to go to society, it is full of variables and uncertainties, for them, the later they come out, the happier they are, and they can't think about their current situation with human thinking, after all, they are predators.

The beauty of nature is here, full of fun, some people survive because of speed, the speed of the cheetah, the speed of the antelope are advancing in the process of competition, faster and faster, and the sloth has gained the right to survive because of laziness, the golden cicada lives under the ground for a long time, the shorter the time on the ground, the higher the success rate of reproduction, all of this is the result of natural selection and biological evolution, don't you say?

The reason why cicadas have been waiting underground for 17 years: some varieties of cicadas go through three stages of fertilized eggs, larvae, and adults in their lives. In the summer, the fertilized eggs laid in the early years hatch into larvae, and they burrow into the soil to feed on the sap of plant roots.

When the larvae mature, they crawl to the ground, shed their golden exoskeletons, and emerge into our common winged adults. Although adult cicadas only live for a few months, the larval stage can survive in the soil for many years, such as the larval stage of an 18-year-old cicada, which accounts for 17 years of its life. Usually stay in the soil for several years or even more than a dozen liquid years, such as 3 years, 5 years, and 17 years, these numbers have one thing in common, they are all prime numbers.

This is because the factor of prime numbers is very small and there are few buried branches, and when drilling out of the soil, the wide hand can prevent it from drilling out with other cicadas and competing for territory and food. When it is about to be feathered, it burrows out of the surface at dusk and at night, climbs on a tree, and then grabs the bark of the tree to molt and feather. Cicada (scientific name:

cicadidae；English name: cicada, cicala or cicale) is one of the families of the suborder Hemiptera Cervicular Beak of the insect class, commonly known as Zhili (Leech) or borrowed drop. Due to the different local dialects, the nicknames also have corresponding mountain changes, please check the nicknames in the basic information column for more information.

<> "Knowing the Edano Yoshishi (Golden Cicada) crawls out of the soil from mid to late June (around the summer solstice) and early August (around the beginning of autumn).

From mid to late June (around the summer solstice) to early August (around the beginning of autumn), it is the best season to harvest in the fields, and the weather is most concentrated in early July or after the rains.

Knowing that digging out of the hole with a pair of jagged forefeet in the wet and soft ground, after climbing out of the ground, it will make a short-term movement on the ground, and then prepare to molt on the trunk or scaffolding of the Fan Yuan, and the next morning at 4 6 o'clock to feather into an adult cicada, you can use a flashlight to illuminate, and at night on the ground and trunk of the tree to catch, or in the early morning to catch the young adult cicada on the tree.

It's usually late in the evening, between 8 and 10 p.m.

Cicadas have strong sensory abilities and can accurately sense changes in light, so they can clearly distinguish between day and night. It comes out at night because it needs to reproduce after metamorphosis, and the light at night is relatively dark, so it can avoid the pursuit of many natural predators, and improve the success rate of mate and reproduction.

With the arrival of summer, the weather becomes hotter and hotter, and many insects and other creatures begin to move. As a representative of summer singing, the cicada also slowly crawls out of the ground, sheds its skin and transforms into an adult, and chirps to find a suitable mate to mate. In the north, we call the cicadas that have not yet undergone metamorphosis the monkey, and we like to catch them for cooking or medicinal purposes.

Especially in the summer, many people will take advantage of the darkness to catch monkeys in the trees.

Because the monkey itself is very nutritious, and the demand is relatively large, it is in short supply in the market, and it is not cheap. However, with the continuous capture of humans, the number of cicadas is also decreasing, although many people breed and breed, the results are not as good as wild cicadas.

We all know that cicada larvae need to grow in the soil for several years before they slowly emerge from the ground, and they can hide from many predators when they live in the soil。Because cicadas live on the sap of plants in the soil, they have plenty of food, and when they reach maturity, they crawl out of the ground for courtship and breeding.

The larvae of cicadas generally do not come out during the day, mainly because the light is too bright during the day, and the cicadas are easily spotted by predators. And come out at night, because the sun goes down and the light is darker, you can better protect yourself. Every cicada has small holes in the ground that can penetrate light into the soil.

Because cicadas have a strong sensing ability and can distinguish day and night by sensing the intensity of light, cicadas will come out of their holes after dark.

Because the cicada's burrow is close to the ground and can sense changes in light, it can know day and night. Because cicadas can only complete their metamorphosis at night, they come out at night.