Why are there obviously fewer mosquitoes in 2022?

Many people said this year that there seemed to be less mosquitoes than before and fewer bites. This was related to the unusually high temperature this year. So, where did the mosquitoes come from? The editor will introduce it below.

Why there are obviously fewer mosquitoes in 2022

In fact, this is all related to the unusually high temperature this summer. This year, the temperature in many areas across the country has exceeded record highs. Weather temperatures above 40 degrees Celsius are no longer unusual. Humans are trying to avoid going out because of this high temperature, not to mention mosquitoes whose lives are more fragile.

According to monitoring data from relevant departments, it can be seen that the density of mosquitoes this summer has indeed declined compared to the past five years, but in fact, the fluctuation in the number of mosquitoes is a very normal phenomenon. No matter what kind of creature it is, it has its own living habits. For example, the most suitable temperature for mosquitoes to survive is between 20 and 30 degrees Celsius. If the environment in which mosquitoes are located is lower than 10 degrees Celsius or higher than 35 degrees Celsius, it will be very difficult for mosquitoes. It is said that there is a certain test. In this case, mosquitoes will generally choose to be inactive. Therefore, most mosquitoes will choose a suitable place to hide. Some mosquitoes will also freeze to death or heat to death due to their poor resistance.

For example, in winter, if we go to some relatively warm and humid places, we will find that there are still some overwintering mosquitoes active. These mosquitoes have already prepared enough mosquitoes before entering winter. They need blood to survive, so they hide in a suitable environment and wait for the weather to warm up. When the weather is hot in the summer, there will be some mosquitoes hiding in cooler corners, waiting for the right time, and then start to come out again when the weather gets a little cooler.

Where did mosquitoes come from?

As insects, mosquitoes have a very long family history. Mosquito fossils appeared in the Jurassic period more than 100 million years ago, but according to their living habits It seems that its history may be traced back to the Carnian period of the Triassic 233 million years ago.

At that time, the earth was experiencing drought for a long time, but the rain lasted for 2 million years.

This rain saved most insects, including the ancestors of mosquitoes. After that, mosquitoes required water to reproduce, which can be regarded as a mark left on them by evolution.

The mosquito family survived the disaster and began a crazy expansion, growing and becoming one of the most prosperous animal groups in the world.

Mosquitoes are the collective name for all members of the family Diptera. There are more than 3,600 species in the world, distributed on any continent except Antarctica.

However, not every species of these mosquitoes sucks blood. Only about 80 species of mosquitoes suck blood, and those that suck blood are all pregnant female mosquitoes.

In the mosquito family, sucking the juice of plants is their royal way of eating, but sucking blood is a heresy in the mosquito family.

Their mouthparts have a hollow structure like a needle, and some can even pierce the bark of plants. As you can imagine, it is not difficult for mosquitoes to prick human skin.

But it is these more than 80 kinds of blood-sucking mosquitoes that have directly ruined the reputation of the mosquito family and become the target of everyone's beating.

In fact, this is quite unfair, because the blood-sucking mosquitoes mainly come from the genera Anopheles, Aedes and Culex, and there are 35 genera of mosquitoes, all of which have been dragged down together.

Even among the mosquitoes of these three genera, the males do not suck blood, so blood-sucking mosquitoes really only account for a small part of the mosquito family.

However, the damage they caused was too great.

Blood-sucking mosquitoes can spread a variety of diseases, many of which are fatal, such as malaria, dengue fever, encephalitis, etc. Every year, 700,000 people die from mosquito bites.

If calculated cumulatively, mosquitoes are one of the most lethal insects.

In order to eliminate mosquitoes, humans have used all kinds of martial arts.