Why do mosquitoes bite people during the day?

Generally speaking, mosquitoes like sunny, dark, humid and watery places, so most of them like to go out at night, but different kinds of mosquitoes have different habits. Some mosquitoes like to live indoors, mostly under mosquito nets, beds, corners and doors.

There are more than 2,000 species of mosquitoes in the world, and more than 300 species have been found in China. Culex pipiens, Anopheles mosquitoes and Aedes mosquitoes are the three main blood-sucking mosquitoes, and they are also the most common mosquitoes. These three kinds of mosquitoes generally do not fly high, and the number of mosquitoes above the sixth floor will be significantly reduced. If there are mosquitoes on the top floor, most people will "take" the elevator.

Culex pipiens, also known as house mosquitoes, mainly bites people and animals after dusk, which is easy to spread Japanese encephalitis. However, Culex pipiens is also the dumbest of the three mosquitoes. It likes to haunt after lights out and pick on its skin before biting, so when it stops, sensitive people will feel it. If it is fan-killed, it will have no chance to "attack".

Anopheles mosquitoes have black and gray spots on their wings. When stopping, the head is close to the ground, and the abdomen is lifted upward, and the body forms an oblique angle of 30-45 degrees with the surface of the object, while Culex pipiens and Aedes pipiens stand parallel to the surface of the object when stopping, which is easy to distinguish. Anopheles mainly attacks humans at dawn and mainly spreads malaria and filariasis. Anopheles mosquitoes are not as cunning as Aedes mosquitoes. When people felt it, it didn't suck blood but bit it. At this time, even if you are killed, Pi will still pack.

Aedes mosquitoes are often called "flower-footed mosquitoes" and can spread Japanese encephalitis and dengue fever. The dengue fever epidemic discovered in Cixi, Zhejiang Province last year was due to the spread of Aedes mosquitoes. When Aedes bites, people usually don't feel it. By the time they felt itchy, it had already "eaten and drunk" and flew away. Aedes mosquitoes are mostly active during the day.

Less taste, not afraid of being bitten by mosquitoes.

Mosquito bites are affected by three factors. First, the carbon dioxide exhaled by the respiratory tract is the directional odor source of mosquitoes, which can help mosquitoes find people and then bite.

The second is the heat. Fat people are more likely to be bitten by mosquitoes, and dark clothes absorb heat to attract mosquitoes.

The third is excrement. Mosquitoes love to bite people with big pores and sweat a lot. Generally speaking, men are more likely to attract mosquitoes than women, young people are more likely to attract mosquitoes than the elderly, and healthy people are more likely to attract mosquitoes than patients. Children have a strong metabolism and are easily favored by mosquitoes. In addition, when women come to menstruation, their secretions will change, which makes them more likely to attract mosquitoes. Mosquitoes are also attracted after sweating, so it is best to take a bath quickly after exercise. If you sweat less, mosquitoes will bite less.

Several methods to deal with mosquitoes

Cut off the aquaculture water. The eggs, larvae and pupae of mosquitoes all live in water. Mosquitoes can't breed as long as their breeding water source is cut off. According to different temperatures, the incubation period of mosquito eggs is 7- 14 days. Therefore, it is necessary to deal with the accumulated water and put away the pots and pans placed in the open air. If there are aquatic plants at home and in the office, remember to change the water every two days, otherwise mosquitoes will easily breed. It is also a good idea to raise fish in the water, because mosquito larvae happen to be the favorite food of small fish. Floor drains, sewers and other places to prevent water accumulation, and often spray some pesticides to prevent mosquitoes from entering the living environment.

Screen window screen door mosquito net. Families with pregnant women or young children can choose to avoid the impact of mosquito-repellent incense and pesticides on the human body.

Mosquito-repellent incense and pesticides should be changed frequently. Mosquitoes, like germs, can develop drug resistance. The Municipal Center for Disease Control and Prevention has monitored the mosquito population resistant to some pesticides. A pesticide or mosquito-repellent incense is likely to be resistant to mosquitoes in a certain area after long-term use, so it is used in a different brand every once in a while.

When traveling in summer, wear long-sleeved shirts and trousers for protection. Apply mosquito repellent to bare skin every 4 hours or so.

Wear light clothes. Aedes likes to park on black clothes.

Use less soap in the shower. Mosquitoes like nectar, and the probability of being bitten by mosquitoes will increase after using perfume, cosmetics, cream and other floral items, except sandalwood.

Eat more vegetables. Some vegetables contain odors that mosquitoes don't like, such as vegetables containing carotene, garlic and other spicy vegetables. After people eat it, mosquitoes will stay away from you.

You can't scratch when you are bitten. After scratching, the tissue fluid and lymph in the skin ooze out and swell into a bag, which will itch more and more and will not fade easily. This is how the "red bean leg" wrapped in a red envelope was caught. If you insist on not grasping, the itching will obviously subside after 10 to 15 minutes.

In addition to diseases such as Japanese encephalitis and dengue fever, exotic mosquitoes are spreading an epidemic called "West Nile fever". Mosquitoes (especially Culex pipiens) are the main vectors, so it was named after/kloc-0 was first isolated from the blood of a feverish woman in West Nile, Uganda in 1937.

West Nile fever used to be prevalent only in Africa, West Asia and the Middle East. It was introduced to Europe in the early 1960s and spread to the United States and other countries in the late 1990s. Most people infected with West Nile virus will not have serious symptoms, such as fever, headache and muscle pain, and sometimes rash and lymphadenopathy will occur. In severe cases, besides headache and high fever, there are neck rigidity, trance, disorientation, tremor, convulsion, muscle weakness or paralysis, coma and so on. And occasionally death. Up to now, the largest human-to-human epidemic occurred in Cape Province 1974, with more than 3,000 clinical cases reported. In recent years, it suddenly began to appear in the United States and became popular on a large scale. Since mid-August 2003, West Nile virus has spread rapidly in the United States, and 28 people have died.

This virus has not been found in China.

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This article is provided by Mosquito Club.