Like summer, there are countless reasons, hate it, one reason is enough, that is, the ubiquitous "bomber" and "mosquito".
Although it is autumn, the mosquitoes are still buzzing. In island cities, mosquitoes generally start to move in May every year and reach their peak of activity in mid-to-late August, and autumn is the last madness of mosquitoes, which is what the so-called "autumn mosquitoes are fiercer than tigers".
It sucks your blood, and after its belly is round, it flaps its wings and flies away, leaving an itchy red envelope on your skin. Your intuitive impression of a mosquito may simply be the wreckage after you "snapped" it.
Today, let Xiaobian take you into the microscopic world of mosquitoes to find out...
How many species of mosquitoes are there in Qingdao?
According to statistics, there are 7 species of mosquitoes in the island city, namely Culex pale, Culex triscarpus-beaked Mosquito, Anopheles pedophyllus chinensis, Aedes albopictus, Dongxiang Aedes mosquito, Aedes aedes aegis, and Aedes aedes albopictus. In addition, there are two species, the common type Oftes mosquito and the yellow Mosquito mosquito are new mosquito species that have not been recorded in the history of Qingdao City, in addition, the harassment of Aedes mosquitoes and the fierce Culex mosquitoes are historically recorded, but they were not monitored by research institutions until 2016.
Source of black mosquitoes
I don't know if you have noticed that Qingdao is currently more of a black and white flower mosquito. This mosquito is not the same as other mosquitoes, other mosquitoes (mostly Anopheles mosquitoes) will first look at the movement after lying on the skin of people, to ensure safety before biting, if you have an action at this time, they will fly away, but this flower mosquito is not, as long as it lies on the skin of the person to start biting, a second is not willing to wait, so as long as this mosquito sticks to the skin of the person, it will almost be bitten out of a bag, especially annoying.
The fighters in the mosquitoes, the flower mosquitoes that bite a bag at once, have invaded more than 70 countries in 20 years. This mosquito is scientifically called Aedes albopictus, also known as the Asian tiger mosquito, which originated in Southeast Asia, later invaded China, and has now become a common mosquito species, commonly known as "flower mosquito" or "spotted mosquito" in China. Aedes albopictus is both an aggressive mosquito and an important viral vector that transmits diseases and can transmit many pathogens, including dengue, malaria, yellow fever, filariasis, and Ross River virus and West Nile virus. The fighters in the mosquitoes, the flower mosquitoes that bite a bag at once, have invaded more than 70 countries in 20 years.
peculiarity:
It mainly sucks blood during the day, especially in the evening, and occasionally has activity at night. And this mosquito is very fierce when it bites people, directly up to bite, so it is called "Asian tiger mosquito". The spotted mosquito is not only vicious, but also good at flying. Generally, mosquitoes fly only tens to hundreds of meters, up to no more than 1-2 kilometers, but the spotted mosquitoes can fly more than ten miles, and the speed is extremely fast, and in flight can also do as much as they want to roll back and forth, dive, sharp turns, sudden acceleration or deceleration and other "difficult actions", is simply a fighter in the mosquito.
Why are "black mosquitoes" strong?
Is it because of tattoos? Non also. When mosquitoes bite people, they suck blood while injecting some protein into the wound. The main role of these proteins is to combat the body's clotting function. When these proteins enter the body, our immune system begins to resist foreign invasions. At this time, the body secretes a substance called histamine. The role of histamine is to increase vascular permeability, so that immune components such as white blood cells clear foreign proteins through blood vessels, and the tissue fluid will also ooze from the blood vessels and enter the tissue, so the bite site will swell up a red packet, which is the result of histamine playing a role. It can be seen that the reason why the black mosquito is strong is because it injects more protein.
Keywords about mosquitoes
Carbon dioxide: Mosquitoes will only fly against the wind for a short time when they find a stream of carbon dioxide, but if the concentration of the stream of carbon dioxide fluctuates like a biological respiration, they will fly firmly against the wind. The mouthparts of female mosquitoes are made up of 6 thin needles that are thinner than a hair. One of them is the esophageal canal; One is a salivary tube that secretes saliva; Two are "blood needles" that can pierce the skin like needles; There are also two "serrated knives" that can cut the skin like serrated teeth. When it sucks blood, it pierces these 6 needles under the skin of the person at the same time, both agile and rapid.
Dark color: Generally black or dark color, are the environmental color that mosquitoes like to live in, so the skin or clothing color is more likely to become a target of mosquitoes.
Odor substances: The sweat of the human body contains a variety of chemicals, including acetone, octenol, lactic acid, amines and dozens of others. Mosquitoes are very sensitive to these chemicals and can find targets for bites based on these odors.
Temperature: Body temperature is an important clue that affects mosquitoes to find targets, even if it is a slight temperature difference, mosquitoes can "see" clearly.
In general, mosquitoes have scales on the wing veins and marginal scales on the posterior edge of the wings. The wings vibrate about 594 times per second when flying, and such vibrations allow us to hear the "buzzing" sound of mosquitoes flying. The legs of mosquitoes are composed of basal segments, femoral segments, tibia segments, tarsal segments, claws, claw pads, and other parts. The number or presence of thorns (moments) on the tibia and the number of nodes of the tarsus are characteristics of the classification. The eyes of a mosquito are made up of two compound eyes, which in turn are made up of many eyes. At night, however, instead of looking with their eyes, they use their tentacles to sense carbon dioxide levels, thereby tracking people to suck blood.
Special note: Part of the content of the article comes from the Internet