Why are mosquitoes so active in summer?

Summer is the most adaptable living environment for mosquitoes. It is hot and humid. The weather is high, the water is sufficient, and bacteria breed quickly. In addition, the human body sweats in summer, attracting female mosquitoes to suck blood and breed in large numbers, causing mosquitoes to become more and more common. many.

Mosquitoes like to lay their eggs in clear water, such as small rivers, rainwater puddles, ponds, swamps, rice fields and mountain streams. In the warm season, the eggs can hatch into larvae in about three days. And began to eat the extremely small microorganisms and protozoa growing in the water.

Male mosquitoes only suck grass juice and live on nectar, but do not suck blood. After mating, female mosquitoes must feed on blood (human or animal blood) in order for their eggs to mature, so only female mosquitoes can transmit diseases. Female mosquitoes can lay one egg after one blood meal, and can lay six to eight eggs in a lifetime, with 200 to 300 eggs each time. Therefore, eliminating one mosquito in the early stage is equivalent to eliminating hundreds or thousands of them.

Summer mosquito control

1. Use screens to keep mosquitoes out. Before mosquitoes become rampant, you must install screen doors and windows with good airtightness at home, and close the screen doors and windows to prevent mosquitoes from entering the room.

2. Clean up the accumulated water in the bathroom promptly, especially close the toilet lid every time after using the toilet. Clean the floor drain regularly to ensure that it is hygienic and free of odor, especially hair and other debris that accumulates in it during bathing. It can be covered with a foam block of appropriate size when not in use.

3. The kitchen sink should be cleaned and flushed frequently to avoid accumulation of water. It is best to use a trash can with a lid. Try not to leave kitchen waste for too long and clean it up in time. Leftovers, leftover rice, etc. can be sealed in small bags and then thrown into the trash can.

Generally, mosquitoes begin to appear in April every year and reach their peak activity in mid-to-late August. When the climate gets colder in autumn and the temperature drops below 10°C, mosquitoes will stop breeding and die in large numbers. Only a few mosquitoes will survive. They hide in cracks in walls and other places where they can avoid wind and cold, such as hiding indoors where it is warmer and more hidden. places, such as behind a wardrobe, etc. But it will avoid hot places, such as heaters. This can not only avoid the severe winter, but also reduce the metabolic rate and avoid death from hunger. A bit like hibernation. Outdoors, mosquitoes generally hide in warmer places such as heating ducts. Mosquitoes that appear in the second year are more likely to be hatched from eggs...

Summer is the breeding season for mosquitoes, and their average lifespan is not long. , 3-100 days for females and 10-20 days for males, but they reproduce very quickly and go through 4 parts: eggs, larvae, pupae, and adults. Generally, eggs last for 1-2 days, larvae for 5-7 days, and pupae for 2-3 days. It takes 3-7 days for adults to emerge, suck blood and lay eggs, and the whole generation takes about 1-2 weeks. Summer is the most suitable for the growth of mosquitoes, so mosquitoes generally go out in full force in summer.

There are particularly many mosquitoes when the weather is muggy and before it rains. This is related to the living habits of mosquitoes. Mosquitoes and other insects have chemotaxis, that is, they have certain tendencies and avoidance reactions to certain chemical substances with special odors. In addition, mosquitoes also like to live in dark and humid places. It relies on the antennae on its eyes and head and three pairs of sensitive sensors on its feet to receive the warm and moist smell of the human body, exhaled carbon dioxide, volatile sweat and other secretions as a "smell language".

Before the weather is sultry or rainy, the humidity in the air is high, the light is weak, and the substances secreted by human skin cannot evaporate quickly due to the sultry heat. These conditions have a trapping effect on mosquitoes, and they can " "Fair wind" comes upon hearing it.

Therefore, before it rains and when the weather is hot and muggy, people feel there are more mosquitoes