There are no mosquitoes in winter. Where did they go?

Mosquitoes generally begin to appear in April every year, and reach the peak of activity in beginning of autumn (late August). In autumn, the climate gets cold. When the temperature drops below 10 degrees, mosquitoes will stop breeding and die in large numbers, and very few mosquitoes will survive in places that can keep out the wind and cold, such as cracks in the wall. They can be hidden in warm hiding places indoors, such as wardrobes, sewers, ditches, etc., and they can also avoid hotter places, which not only avoids the severe winter, but also reduces the speed of metabolism. Usually outdoors, it will be hidden in the heating pipe.

Most insect adults will die before the cold comes, and so will mosquitoes. Most mosquitoes die in winter, but there may be eggs or pupae in some water bodies with sufficient organic matter, which will hatch quickly and grow into adults in the next year.

Mosquitoes are annoying, but in fact, mosquitoes are also a species that has evolved quite successfully, with a wide variety and wide distribution. It seems that mosquitoes exist in most places except Antarctica. Even near the cold Arctic Circle, there are a large number of mosquitoes in the short summer. Mosquitoes in the grasslands of northern Asia will bring great trouble to herders and livestock in summer. But in fact, most mosquitoes are harmless to human beings, mainly sucking the juice of plants or animals, and only female mosquitoes have such behavior.

Most mosquitoes generally live in tropical and subtropical regions where the climate is warmer, and the active season is also when the temperature is higher. But if the temperature is higher than 35℃, it will also limit the activity of mosquitoes. From the life season of mosquitoes, we can know that they generally can't stand low temperatures, only move at higher temperatures, and rely on odorous metabolic wastes such as carbon dioxide exhaled by people and lactic acid produced by metabolism to pursue the human body.

After all, mosquitoes are very small creatures. Even if they suck blood, it is only a fraction of 1 g, which can't support their long-term activities. Muscle adipose tissue is also lacking, and they can't store enough energy. Unlike amphibians or big bears, they can hibernate, mainly by reducing activity to reduce energy consumption. They may hide in sheltered and slightly warm places, such as cracks in the wall and under the bed. Most adult mosquitoes will be in the cold winter. Eggs and pupae can ensure temperature and moisture due to the role of outer layer A, and the process of decomposing organic matter by microorganisms will also generate heat, so that mosquitoes will hatch quickly when the temperature rises in the coming year. In addition, the growth cycle of mosquitoes is relatively short, and they will soon grow into adults and multiply rapidly in the short summer. Some will hatch in the season, and some will be used as a reserve for mosquitoes to hatch when the temperature rises in the coming year.

All kinds of creatures in nature have ways to deal with it, and mosquitoes also have ways to spend the cold winter world, but generally we don't notice it. What we often notice is that mosquitoes don't appear in winter and suddenly come out in summer.

Mosquitoes generally appear in April every year and reach the peak in the middle and late August. When the climate gets cold in autumn and the temperature drops below 10℃, mosquitoes will stop breeding and die in large numbers, and few mosquitoes survive. They can shelter from the wind and cold in places such as cracks in the wall, such as hiding in warmer and more hidden places indoors, such as behind the wardrobe. But it will avoid hot places, such as heating. This can not only avoid the severe winter, but also reduce the metabolic rate and avoid starvation. Kind of like hibernation.

Outside, mosquitoes usually hide in warm places such as heating pipes, and the mosquitoes that appear in the second year are mostly hatched from eggs. ...

Mosquitoes die or hibernate in winter. Mosquitoes couldn't survive the winter in the past, but now human civilization provides them with the conditions for the winter. For example, there are a lot of mosquitoes around the heating pipe, so the mosquitoes have not disappeared, but they just don't appear in front of us.

Mosquitoes will freeze to death in winter, but some of their eggs will be hidden in sewers and various warm places.

After a whole summer rampage and a last-ditch fight in autumn, as the weather cooled down, many flies and mosquitoes lost their attack ability. In the corner and windowsill, sometimes you can see dead mosquitoes falling from nowhere. When you feel glad that you can't see those disgusting flies and annoying mosquitoes because of the cold weather, have you ever wondered where those flies and mosquitoes will come out next year if they freeze to death in winter? Where are those lucky flies and mosquitoes in winter? How do they spend the winter?

Mosquitoes reach the peak in August and September, and as the weather cools in autumn and winter, mosquitoes stop breeding. Especially when the temperature drops below 10℃, mosquitoes die in large numbers. Only a few stronger mosquitoes survived. Like whiteflies, they also look for places to avoid the cold, such as cracks in walls, behind wardrobes or gaps in heating pipes. They need to slow down their metabolism and ensure that they will not starve to death, just like other animals hibernate.

Some mosquitoes just keep coming, waiting for the warm spring in bloom next year, and continue to come out to feed and lay eggs. Some mosquitoes spend the winter as eggs. In summer, these mosquitoes lay a large number of eggs in the water, and the eggs in the water will freeze with the decrease of temperature but will not die. When the weather gets warmer, they will start to hatch into larvae, which are dragonflies. Moreover, according to the research, some octogenarians who haven't had time to change before winter comes still have the possibility of survival after the long winter.

In areas with four distinct seasons, mosquitoes will appear alternately in the breeding period and the wintering period due to the influence of natural environmental factors. In winter, when the temperature is too low, mosquitoes stop breeding, and adult mosquitoes gather in a warmer and more stable microclimate to hide, and the metabolism of Xin Dong is minimized, which is called wintering. In early spring, the temperature gets warmer, and the surviving adult mosquitoes begin to suck blood, lay eggs and reproduce. Mosquitoes overwinter in different ways, such as Culex pipiens pallens overwinters as adults, Anopheles minimus and Culex tritaeniorhynchus overwinters as larvae, and Aedes albopictus overwinters as eggs. During the wintering period, most mosquitoes died naturally, and only a few survived until the next spring. The wintering period is the period when the number of mosquitoes is the least and the life is the most fragile.

Mosquitoes hide in winter.