With 30 billion cicadas that have been dormant for 17 years sweeping through the eastern United Stat

Cicadas are very harmful to trees, and can also cause a lot of damage to local crops and also destroy the ecological balance.

The 30 billion cicadas that have been dormant for 17 years will sweep the eastern United States, and the cicadas will not have a particularly large impact on crops, and the local authorities recommend that the public treat them calmly, it is North America, it is a local endemic species, its body length is centimeters, its wings are translucent brown, and its eyes are red, in which the larvae will lie dormant in the soil at the root of the tree for 17 years, mainly sucking the sap of the roots of the tree for a living, and the moment they emerge into cicadas, they collectively drill out of the ground and die after breeding on the ground.

It has a great impact on crops, and it will also lead to a reduction in crop yields, and it will also cause some crops to be damaged, and it will also cause some crops to grow very slowly.

First of all, it will lead to lower and lower yields of agricultural products, and it will also lead to serious problems with the quality of agricultural products, which will also affect sales later.

You can eat all the crops, and it will be a huge blow to the crops, so it is terrible to say that this is not good.

This summer, there were suddenly a lot of "uninvited guests" in Americans' homes - cicadas. Billions of cicadas that have been dormant in the ground for 17 years are beginning to emerge from the ground and appear in parts of the eastern and midwestern United States. The 17-year-old cicada is a type of cyclical cicada, and the cyclical cicada is the genus name of a class of cicadas living in North America, and its life cycle is 17 years, and the sudden appearance after more than ten years is their inherent biological phenomenon.

The cyclic cicada is one of the longest-lived insects in the world. They spend most of their lives underground in the form of pupae and feed on tree roots. <>

While cicadas do not harm humans, their chirps and sheer numbers are a headache for many Americans. Except for the hard-hit areas, there are up to 250,000 animals per mu in other areas, which looks dense, and ordinary people will feel uncomfortable when they see it. For some insect fears and dense fears, when they see the swarming cicadas on the ground, they can't help but feel a surge in their hearts.

However, these cicadas do not stay on the ground for long, they only break through the soil to lay eggs, and the female cicadas die after laying eggs, while the male cicadas die immediately after matingAt most, it can survive on the ground for a few weeks。Therefore, as long as the Americans can survive these four weeks, the next cicada disaster will not be until 17 years later.

Many friends expressed curiosity, why do cicadas only appear in summer and not in other seasons? <>

Because cicadas are insects that require high temperature to survive, they spend their larval years in warmer underground, and once they come out early, they will freeze to death. When they reach adulthood, they crawl out of the soil during the hot summer months, shed the last layer of skin, stretch their wings and become adults, perch on high branches, and woo by chirping.

Although the cicada only appears in summer, its lifespan is not just a summer, but can last for several years or even more than a decade, and it only hibernates underground at other times. Therefore, you must not mistake cicadas for short-lived creatures, in fact, they belong to the "longevity" of the insect world.

Because only the climate in summer is suitable for the growth of cicadas, and cicadas hibernate when the weather is cold, they only appear in summer.

Because the temperature is very suitable in the summer, the soil is relatively moist, and there is more rain in the summer, it often occurs in the summer.

The weather is very hot and the temperature is very high in the summer, and these animals are very fond of being active in the summer, so they only appear in front of our eyes in the summer.

Mainly because the high summer heat can promote their development, so they will break ground at this time.

30 billion cicadas will sweep through the northeastern United States, just seeing this number is shocking, if 30 billion cicadas appear at the same time, I don't know what kind of spectacular spectacle it will be. There are 7.5 billion people in the world, and these cicadas in the eastern United States are several times larger than the global population. The scientific name of these cicadas is Brude x cicada, which is a creature with local characteristics, perhaps it should belong to the traditional periodic cicada, there are two kinds of such periodic cicadas in North America, and the periodicity is very long, one is 13 years and the other is 17 years, this time all out is the cicada that has been dormant underground for 17 years, and all of them come out at once.

Scientific studies have shown that the cyclical nature of the periodic cicada is very punctual and has never been early or late due to natural or man-made reasons, which is why it is called the periodic cicada. The emergence of cyclical cicadas in the United States this year will certainly bring a severe test to the local ecology. In particular, it can be destructive to tree seedlings, they suck on tree roots, branches and leaves, which will affect the growth of trees.

What is the difference between this periodic cicada and our common cicadas? There is not much difference from ordinary cicadas in terms of appearance and overall characteristics, except that the eyes of periodic cicadas are red and reflective, and periodic cicadas can grow up to centimeters. The average cicada has a short cycle, generally one or three years, and its eyes are black and its whole body is brown.

This kind of periodic cicada in the United States will appear once every 17 years, each time it appears in hundreds of millions of units, tens of billions of cicadas are different from other creatures, if it is a butterfly, at least the senses can accept, for the overwhelming flying cicadas are not only visually unacceptable, the sound is also extremely harsh, this kind of scene can only be known by those who have experienced it.

Americans have already experienced this horror twice, in 1987 and 2004, when the corpses of thousands of red-eyed cicadas were disgusting everywhere they were, and the cries of the day and night were distracting. Every tree is full of chirping cicadas, and even if there are natural enemies, it is estimated that their natural enemies will be killed, and it will be difficult to eliminate them in a short time.

The scientific name "Brude x Cicada" is native to North America, and its larvae lie dormant in the soil at the roots of trees for 17 years, and emerge from the ground en masse when they emerge into cicadas, so they are also called "17-year-old cicadas".

There are some differences, these cicadas are larger, and they have a longer life cycle, they will lie dormant for 17 years before growing.

Seventeen-year-old cicada, homoptera. A cicada in North America that takes 17 years to burrow and emerge. They emerge from 17 years of dormancy in the ground, then molt with branches and then mate.

Male cicadas die after mating, and females also die after laying eggs. Scientists explain that this peculiar way of life of the seventeen-year-old cicada has evolved a long and hidden life cycle in order to avoid the invasion of natural predators and safely continue the population.

There is a difference, these are actually two types of cicadas, and their living habits and appearance are very different.

No, it's just that this time the number is particularly large, and it has seriously affected the daily life of local residents.

Every summer, some cicadas will break through the ground on our side, and hundreds of millions of cicadas will break out of the ground in the United States for 17 years, what should these cicadas do? Do Americans also eat cicadas? In fact, they do eat it, but not as much as we do, and these things do not cause great harm to crops, so let's explain it to you in detail.

1.Every summer we have some golden cicadas on our side.

When I was a child, the best memory was that I could catch some golden cicadas in the summer, because these things only came out in the summer, and there were a lot of them, so every night we went to the woods with our friends to look for them, and after finding them, we could take them home or sell them, so that we could get some small snacks, so it became a good memory for us, but this thing is available in many places around the world, such as the United States. <>

2.They eat it too, but not as much as we like.

Every summer, after we catch it, some of it is sold, and some of it is left in our own homes to eat, it can be steamed and eaten, and it can be fried and eaten, it is very fragrant, so we like this thing very much, but for Americans, I don't think they like it that much, because they don't have this custom, they prefer to eat some beef and mutton, and they can only say that they don't like these things so much, and they don't necessarily eat them after they actually make them. So they're not going to catch a lot of golden cicadas like we do and come and cook. <>

3.It will not cause much damage to crops.

Because the number is very large, it is said that there are more than 100 million, so many people will worry about whether it will greatly harm crops and trees, in fact, after the speculation of experts, this worry is not necessary, because after these things come out, they will disappear in a short period of time, so their damage to crops is extremely small, negligible, but because we catch a lot every year, we feel that it is very wasteful if we don't catch it, so we are more concerned about this matter.

All in all, when I was young, there will be some golden cicadas in many places, and we will catch some in the summer, which can be used for snacks, or taken home and fried to eat, very fragrant, and now there will be more than 100 million golden cicadas in the United States, breaking the ground, it can be said that the number is very large, in this case, how should Americans deal with it? Many people think that the United States will eat it too, but they don't like it as much as we do, so the quantity is limited, and experts speculate that it won't cause much damage to crops, so there's no need to worry too much.

Don't eat. Americans don't like to eat such food at all, and they can't accept it, it's a very disgusting food in the eyes of Americans.

Don't eat. But their experts are encouraging them to eat it, because there are so many cicadas in the area right now, which may damage the ecology.

If you don't eat cicadas, it's because Americans don't eat cicadas that they will be reproduced in large numbers, and now the cicadas in various regions of the United States are out of control.

Yes, because they are influenced by Chinese food culture, they also use some cicadas, but few people eat them, and most people don't eat them.

The United States does not eat cicadas, it seems that people in many countries can't accept the fact of eating cicadas, in fact, I can't accept it, but I feel very enjoyable to see others eat them.

The United States does not eat cicadas, but cicadas have been breeding in the United States and have no natural predators.

If you don't eat it, Americans can't enjoy this kind of food at all, and they are very afraid of it, so they won't eat it.

Yes, the United States also eats cicadas. The cicada is a very nutritious insect, and not only in China, but also in many other countries in the United States, many ways to eat cicadas have been invented.

Americans don't eat this animal, so at the moment they are very troubled, and now the cicadas have become a disaster.

Because the environment there is suitable for cicadas to survive, and the temperature there is moderate.

Because they are cyclical cicadas, the longest life cycles for cyclical cicadas are 17 and 13 years. There are only about 7 species of cicadas in the world that have such cyclical survival ability, and they are basically distributed in the central and eastern regions of the United States, and this kind of cicada is bursting out every other year.

Because the local ecological chain has been seriously unbalanced, and the biological invasion is that, there are so many cicadas.

The main reason is because the people there don't eat cicada chrysalis, otherwise we would have been eaten clean in our country.

They are endemic to North America and have a body length of centimeters. Its larvae will lie dormant in the soil of the roots for 17 years, feeding on the sap of the roots, hence the name "17-year-old cicada".

What is the law of the 17-year-old cicada? 1. The outbreak period is 13 years except for 17 years, and there is no other number;

2. The periodic cicadas in one region basically strictly follow the periodic law, and occasionally individual individuals continue to appear in advance or in the second year of the outbreak, and there is no trace in other years;

3. Almost every year in North America, there are one or several periodic cicada outbreaks.

The eastern region of the United States recently issued a cicada swarm warning, saying that 30 billion cicadas are about to break through the ground, reminding people to take defensive measures in advance. The scientific name "Brude x Cicada" originated in North America and is endemic to the region. It has a body length of centimeters, translucent brown wings, and red eyes.

Its larvae will lie dormant in the soil of the roots for 17 years, feeding on the sap of the roots. When it appears in the form of a cicada, it emerges from the ground, reproduces on the ground and dies, so it is also called "17-year-old cicada". Experts say that the "17-year-old cicada" will disappear a few weeks after it is unearthed and will not cause great harm to crops.

It is recommended that everyone treat it calmly.

Children who have been dormant for years, once born and raised in cities and rural areas, may be no stranger to cicadas. On the big banyan tree in the study room of the school playground and on the weeping willows by the river, the long, loud and annoying sound of cicadas kicks off the summer. If older children will play with them, they will most likely "stick" them with bamboo poles wrapped in spider silk, or find cicadas near the roots of large trees in the morning.

The life cycle of a cicada is divided into three stages: egg, nymph, and adult. Before their last molt, they must live in the dark underground for a long time, usually more than a year.

Most cicadas do not have a cycle, and their nymphs absorb enough nutrients from underground roots or stems near the ground, then climb onto the trunk to molt, and emerge in spring and summer; Then mate, lay eggs, die, and live a lifetime. This is the life of most cicadas we've seen.

In North America, there is a cicada whose nymphs live very regularly underground for years and then seem to be summoned. On a summer night of several weeks, tens of millions of individuals erupted together, ending the final stages of life to the sound of a tsunami in the mountains, and then died en masse and disappeared until they reappeared again in the next 13 17 years. Because of these characteristics, they are also known as "periodic cicadas".

New life after years of dormancy, like a metaphor for life; And the periodic cicadas truly interpret this allegorical story to the extreme.