There are sweet and juicy watermelons to accompany, summer is happy, provided that there are no mosquitoes at the same time. When people enjoy the food of crispy and laksa, they may become a big meal of mosquitoes – this is not a feeling of happiness.
When we pick watermelons, we can either listen to the sounds, or give the watermelons a face, or simply take the luck and take it with you. But when the mosquitoes face several people in the house, who will choose who is the object of a big meal?
Recent scientific studies have shown that mosquitoes also have similar “picking”, but they are concerned with some physiological indicators of humans.
What do mosquitoes choose to eat?
In order to prevent mosquitoes from being attacked by air, people have been equipped with a variety of active or passive defenses such as mosquito coils, mosquito nets, mosquito swatters, and mosquito killers. However, in addition to increasing the difficulty of eating mosquitoes, it does not change the positioning of humans in the eyes of mosquitoes. Long leg buffet.
However, the taste of the “long-legged buffet” will be different. Some people will not be attacked by mosquitoes even if they are in the yard and enjoy the coolness. Some people will be caught in the mosquito-proof clothes and will be broken by the mosquitoes. A few mouthfuls. We sometimes have to admire the mosquito’s dedication to food.
People with type O blood are twice as likely to be bitten as type A blood.
Mosquitoes determine whether a person is suitable for their taste, mainly based on chemical information on the person.
Qiaopu Van Long, an entomologist at Wageningen University in the Netherlands, found that mosquitoes search for “food” based on the “marks” of carbon dioxide. When people exhale, the carbon dioxide exhaled from the lungs is not immediately mixed with the air, but temporarily forms a mass like a crumb-like airflow. It is this airflow that mosquitoes track. Through special habits and sensory organs, mosquitoes track the tiny chemical traces left by the body looking for biting objects. Mosquitoes can distinguish directions based on the traces of carbon dioxide in the air. In order to better sense where carbon dioxide is high, they will use more force to fly against the wind.
Mosquitoes use all their senses when they hunted, but “smell” is more important because odor is the main basis for their choice of food. Studies have found that people with faster metabolism, higher body temperature, and more sweat are more likely to be bitten by mosquitoes.
The lactic acid and exhaled carbon dioxide produced by our body attract mosquitoes. Qiaopu Van Long said that with the traces of carbon dioxide, mosquitoes will lock in “targets” within 50 meters. When mosquitoes approach a group of potential “victims” (less than one meter away), their sensory organs begin to read various parameters, such as the temperature of the skin, whether there is vapor and color on it. In general, people with a full range of flavors will become the preferred target for mosquitoes to eat.
Mosquitoes choose this person rather than another person as a bite object, and an important factor is based on the chemical composition of microbial colonies on the skin. Microorganisms on the skin produce a “chemical bouquet” of more than 300 different ingredients. Scientists point out that its composition depends on the environment and the genetic structure of the human being. Previous studies have shown that men with more skin bacterial components are less likely to be bitten by mosquitoes than other men.
Mosquitoes prefer “intoxication”
The chemical information that is emitted on the skin is genetically related, which makes it easy for some people to be bitten by mosquitoes. However, some acquired behavior will also make people more “delicious” in the eyes of mosquitoes, such as drinking.
Just like some people like to eat “drunk fish” and “drunk shrimp”, mosquitoes prefer “intoxication.” Studies have shown that ethanol exhaled by the body after drinking increases the appeal to mosquitoes. The American Journal of Mosquito Control Association has found that drinking alcohol greatly increases the likelihood that people will be bitten by mosquitoes. One of the small research surveys found that people who drank a bottle of beer were more likely to attract mosquitoes. A similar study also found that mosquitoes are attracted to people who drink alcohol. The alcohol in the wine and the traces of ethanol contained in the sweat may signal to the mosquitoes that the food is here.
Interestingly, mosquitoes will enjoy blood with alcohol, but they won’t get drunk because of them. They won’t fly and fly from the air.
Bobby Shahr, an entomologist at North Carolina State University, points out that people who drink 10 glasses of alcohol may have an alcohol concentration of 0.2%. However, if the mosquito drank the blood of this person, the effect was negligible, because the amount of mosquito drinking was too small, which was equivalent to the dilution of the alcohol strength of the 10 glasses of wine to one-fifth. The evolution of the mosquito itself has also “increased” its “alcohol”. Any liquid that is not blood will be transferred to a separate digestive bag by the mosquito and decomposed by enzymes. Therefore, alcohol is likely to be neutralized before stimulating the nervous system of the mosquito.
Let the mosquitoes not see people?
Studies have found that among people who are naturally bitten by mosquitoes, people with type O blood are twice as likely to be bitten as type A blood. Other high-risk factors include heavy breath and tall body.
Biologists have figured out how mosquitoes can identify human chemical odors in the process of finding victims. Based on this finding, scientists can study how people “invisible” within 50 meters of mosquitoes.
“You can add the smell of interfering mosquitoes to existing insect repellents, such as DEET. It can be said that our findings will make mosquitoes invisible.” Matthew De, a scholar at Florida International University in Miami, USA. Henaro said.
Although people become “invisible food”, although effective, but a hundred secrets, there will still be some chemical signals leaking out to attract mosquitoes. Therefore, when mosquitoes are used, not only must insect repellents be sprayed on the skin, but insect repellents should also be sprayed on the clothes.
When using insect repellent, don’t be embarrassed. Many people use insect repellent only when they spray a little behind their ears or on their wrists. This is not effective because it will not be built. The point is, as long as you leak a place, it will be found by mosquitoes.
If you do all kinds of protection and still become a big meal for mosquitoes, you can only study the remedies after being bitten.