Tens of thousands of Mayflies Found in Dengzhou, Henan Province.

Tens of thousands of Mayflies Found in Dengzhou, Henan Province.

Tens of thousands of Mayflies have been found in Dengzhou, Henan Province, and tens of thousands more have arrived in Dengzhou, Henan Province! It spread quickly on the internet, causing heated discussion among netizens. Three questions about biological ephemera that people are most concerned about. 1. What kind of creature is a Mayfly? Second, will it bring any harm to us and the ecological environment? Third, is it caused by the great climate change?

Tens of thousands of Mayflies Found in Dengzhou, Henan Province+0 2021In mid-August, a town in Nanyang, Dengzhou, Henan Province appeared a scene that had never been seen before. The video shows that there are tens of thousands of flying insects smaller than fingers on the street. Some people describe it as "Six In the snow", but biologists are not familiar with it.

Tens of thousands of Mayflies suddenly descended on Dengzhou, Henan! This is an unprecedented strange thing. Since ancient times, there has been a saying in China that "if there is a vision in the sky, there must be Uber". Many people have doubts about this strange thing in front of them. Could it be caused by climate change? In July of 20021year, many places in Henan province suffered from record floods, and the people's living order has not been restored.

Biologists shouted: harmless to crops, once every few years.

Tens of thousands of Mayflies suddenly descended on Dengzhou, Henan! It spread quickly on the internet, causing heated discussion among netizens. Three questions about biological ephemera that people are most concerned about. 1. What kind of creature is a Mayfly? Second, will it bring any harm to us and the ecological environment? Third, is it caused by the great climate change?

Soon, our experts gave everyone a reassurance. Plant protection experts from dengzhou city Agriculture and Rural Bureau shouted on the Internet: No harm to crops. In fact, this phenomenon will appear every few years, so everyone will put back the heart of the throat just mentioned, which will not bring harm to us and the ecological environment.

People have doubts about the phenomenon that tens of thousands of ephemera suddenly descended on Dengzhou, Henan Province. It is no wonder that in July 20021year, many people in Henan province became "frightened birds" and their mood has not recovered from the disaster.

What kind of creature is a Mayfly?

Speaking of dragonflies, moths, flies and bees, I believe many people are familiar with them, but speaking of ephemera, many people may feel strange. What kind of creature is a Mayfly? Then, we will learn about this creature with curiosity. In fact, they often live with us, but they are not found.

Mayfly is an ancient and special creature. Its evolutionary history on earth is much longer than that of human beings. It originated in the Carboniferous period 200 million years ago, with a body length of about 4~26 mm, and only a small part of its appearance is similar to that of a dragonfly. Mayflies are characterized by a pair of long tail whiskers at the ventral end, short head antenna, well-developed compound eyes and a wide middle chest.

Mayflies are short-lived creatures. Some only live for a few days, and some only live for one day. It's really "sudden death". When tens of thousands of them appear, there are a lot of deaths every minute. Therefore,

In spring and summer, tens of thousands of male Mayflies will get together for a collective "wedding flight". Female insects will take this opportunity to fly into the mayfly, mate with male insects, and then lay eggs in the water. Larvae will lie dormant in water for several months to 65,438+0 years, feeding on suspended plants or other biological debris, and will undergo almost 24 molting.

Mayflies don't eat or drink when they become worms. Their time is very short, and there is only one thing, that is, whether they reproduce successfully or not, they will die before long.

Mayflies are extremely sensitive to hypoxia and acidic environment, so the pollution degree of biological environment determines the number of Mayflies. The higher the pollution, the less oil slick. Without pollution, there will be a large number of mayflies. Mayflies can be used as one of the criteria to identify whether a water body is qualified or not. There are a large number of Mayflies in Dengzhou, Henan Province.

Is it caused by the climate change of 202 1?

In September 2020, after the hurricane in the United States dissipated, a large number of mosquitoes suddenly appeared in coastal areas, causing mosquito disasters. 100 kilograms of animals were directly killed by mosquitoes, mainly because the hurricane brought a lot of rain and the ground was full of water. Mosquitoes like wet and watery places, which brings convenience to mosquito reproduction. A week later, it triggered a mosquito disaster.

So, is the appearance of Mayflies in Dengzhou, Henan Province caused by the climate change in 20021year? In fact, the climate did change in 2025438+0, but it did not change much. Climate change has caused floods in Henan Province. Does the flood bring convenience to the reproduction of Mayflies? In fact, if you analyze it carefully, you will find that the flood in Henan Province has nothing to do with the emergence of a large number of ephemera.

This is because the growth period of Mayfly larvae is one year, the life span of adults is only about one day, and the reproduction time is very short. Therefore, it is impossible for adults to reproduce during the flood in Henan Province. Even if they reproduce, the larvae will not become insects until next year. Moreover, Mayflies have high requirements for water bodies, and floods naturally do not meet the breeding conditions of Mayflies.

Generally speaking, the sudden arrival of tens of thousands of ephemera in Dengzhou, Henan Province was not caused by the flood caused by climate change, nor did it bring any harm to crops. This is a normal natural phenomenon. On the contrary, it shows that the ecological environment in this area is very healthy and the water body is not polluted, so there will be a large number of ephemera, which is a good thing.

Thousands of Mayflies were found in Dengzhou, Henan Province. Recently, a scene happened in dengzhou city, which frightened people with intensive phobia. There are many flying insects on the bridge in Jitan town, which are overwhelming. This strange sight makes people curious and panic. As we all know, before some disasters happen, animals will have various mysterious behaviors to warn in advance.

For example, during the earthquake, the fish in the lake began to jump out of the water, and frogs and mice collectively ran into the street, so a large number of flying insects gathered this time, which also made people talk about it. Some people say that this is a "water moth", which indicates that there will be a rainstorm. This has aroused the concern and worry of Henan people who have just passed the flood. So is this really the case?

What exactly is a flying insect?

According to the dead bodies of flying insects left at the scene, the staff of dengzhou city Forest Protection Station judged that these insects are not moths as mentioned on the Internet, but ephemera, the legendary ephemera in "Ephemera". Mayflies are an ancient creature with a history of at least 200 million years. It is the most primitive winged insect. This kind of insect is not big, and its body length is generally 3-27mm, which is about the size of a moth. The abdomen is yellow, and the wings are white and thin, almost transparent, which is very beautiful.

"A drop in the ocean sends the ephemera to the ground." We often say that the life span of Mayflies is short, but that is only for adults. Mayflies usually lay eggs in water, and larvae hatch from eggs and live in freshwater lakes or streams. They will become adults only after a year or more of larval stage, during which they will shed their skin continuously, up to 20-24 times or even 40 times.

After such a long period of infancy, they will come out of the water and stay on the plants near the water. After 24 hours of molting, it became an adult. This kind of adult is a ephemera in our eyes. Their life span is very short, usually only a few hours or days, so they completely give up their foraging function and only want to mate all their lives to ensure their offspring to reproduce in a short time.

Therefore, when we see groups of Mayflies appear, it is their breeding period, which usually occurs in spring and autumn. Female Mayflies are almost tools for laying eggs. During the breeding season, male Mayflies use their long front legs to catch female Mayflies for forced mating, whether the female Mayflies like it or not. On average, each female Mayfly will mate with about 20 male Mayflies, and then these male Mayflies will fall down and cover the whole ground.

The female Mayfly will return to the water to lay eggs, which are filled from its chest back to the end of its abdomen. The number of eggs laid by each female mayfly is very large, and its volume is almost equal to the volume of the abdomen of female insects. So is it good or bad that so many mayflies gather together?

Is Mayflies Gathering Good or Bad?

Mayflies like to lay eggs in water, so they have high requirements on water quality. Generally speaking, the more ephemera there are, the better the local water quality. Therefore, Mayflies are known as environmental indicators in biology. They mate on such a large scale every few years, which seems a little high this year, but you don't have to worry too much.

In August 2020, a large area of Mayflies appeared in Yiyang, Hunan. Because there is Dongting Lake nearby, there are too many ephemera flying over, and they cover the whole earth. The sight is full of bugs, so you can't see the scene around you at all. Moreover, after that, the bodies of Mayflies will be laid on the ground in piles, with a thick layer, as if it had snowed.

Mayflies gather not only in China, but also abroad. On the Tisza River in Hungary, millions of long-tailed Mayflies fly on the water to mate every year. The scene is spectacular. Mayflies broke out on a large scale in the Mississippi valley of the United States. The scene, such as Six In the snow, also caused many traffic accidents.

Therefore, this gathering of ephemera in Henan is just a normal mating activity, which has nothing to do with natural disasters. Don't be too nervous.