What are the disadvantages of mosquitoes sucking blood to humans!!

After being bitten. It will be red and swollen, and it will be very itchy.

Only female mosquitoes suck blood, males do not. Female mosquitoes must suck blood from their ovaries in order to develop and reproduce.

There are many species of mosquitoes, and some mountain mosquitoes only suck the sap of plants (male and female); What we see is that only female mosquitoes suck blood. Female mosquitoes must suck blood (human or animal blood) eggs to mature after mating, so female mosquitoes suck blood, while male mosquitoes do not suck blood.

Female mosquitoes suck the blood of the Lord.

In order to reproduce their offspring, the eggs of female mosquitoes can only mature after sucking blood. Female mosquitoes have a longer lifespan, and a small percentage of female mosquitoes store fat in their bodies and can lurk in warm, humid corners for the winter. When it warmed up in the spring of the following year, it flew out again to suck blood and reproduce.

This is the reason why mosquitoes appear as soon as the spring is warm.

Male mosquitoes generally feed on nectar and plant sap for nutrients. The lifespan of male mosquitoes is also relatively short, generally only about a week.

Why do mosquitoes suck blood, and where does the blood end up? You can't think of the answer!

You know? In the beginning, mosquitoes do not suck blood

There are two kinds of mosquitoes, one is a male mosquito, which is very large and mainly feeds on nectar and does not suck blood. Another type of female mosquito is a frequent sucker of human blood. On the one hand, they use blood as food, and on the other hand, if they do not suck blood, they cannot produce offspring.

So hateful things have a pitiful side.

The blood-sucking dao mosquito is the female mosquito bai, and the mosquito's mouth is stinging duzhi sucking mouth zhi

Utensil. By the upper inner lip (dao upper lip pharynx) dao, the inner tongue each.

1 inner, 1 pair of upper and 1 pair of lower jaws, which form an elongated needle-like structure and are contained in the sheath-like lower lip. The upper inner lip is elongated, and the ventral concave surface forms the inner wall of the food tube.

Mosquitoes are definitely blood-sucking, but we have to distinguish between large mosquitoes and midges that are not in the mosquito family, which are not blood-sucking, but do not belong to the mosquito family.

In general, the common Anopheles mosquitoes, Culex mosquitoes, and Aedes mosquitoes in the mosquito family are blood-sucking, but not all. Because only female mosquitoes suck blood, they suck blood for the purpose of reproducing offspring. Because the mother and child will suck blood after mating, only the nutrients in the blood can make the mosquito eggs mature.

And mosquitoes are also very knowledgeable about sucking blood, which is much more complicated than the young lady in the hospital to give you injections.

Mosquitoes find us through carbon dioxide and lock us through our body temperature. When it is about to suck blood, it curls up its lower lip and leaks out six needles from the mosquito's mouth. It will first pierce our ** with a pair of palates, constantly looking for blood vessels, because mosquitoes cannot accurately determine the location of blood vessels, so sometimes mosquitoes will bite us multiple times.

When the blood vessels are found, a pair of jaws will be inserted into the ** for fixation, and then its upper lip will be inserted into the blood vessels to suck blood.

When a person has a blood transfusion.

The blood in the blood packet flows directly into the blood vessels and the surface of the red blood cells.

There are different antigens (used to identify whether foreign cells) are within the bloodstream.

There is an antibody to defend the body

Used to identify foreign cells.

Once the loss is discovered.

It's going to stick to it.

Causes an immune response in the body.

At the same time, the white blood cells are notified to devour these foreign invaders Different blood types have different antigens and antibodies Blood group A: There is an antigen

Same as Antibody-B blood group B: Have B antigen and same antibiy-A blood group O: Have A

b antigen

But no antibody A and B blood group AB: No antigen but also antibodya and B because too many antibodies stick to the cells.

It can become a blockage.

Affects blood circulation.

So there will be both the threat of death and the mosquito sucking blood.

But to break down the blood.

And take the nutrients in it.

So it doesn't have an impact.

Because mosquitoes suck blood and absorb nutrients, and if they don't suck blood, they will really die.

Reference: myshelf

Feeding The vast majority of female mosquitoes feed on blood, so their mouthparts are specialized into elongated beaks in order to pierce the animal's **. Unlike the needle-like (syringe-like) mouthparts of other blood-sucking insects, the mouthparts of female mosquitoes are covered with jagged protrusions. Compared to the smooth surface of the injection needle, the jagged mouthparts have a smaller area of contact with the tissues, which reduces the amount of pain on the nerves.

When the mosquito sucks blood, it will puncture repeatedly**, and use this action to find the most suitable puncture position (determined by the density of microvessels). Next, the mouth needle is inserted into the **. The mouth needle can be directly pierced into the microvessels, or the movement of the mouthparts can be used to cut the microvessels, forming a pool of blood before sucking blood.

Female mosquitoes use special sensors to find their prey. Female mosquitoes are very sensitive to carbon dioxide, heat and sweat, so they can look for bites from mammals and birds at a certain distance. Some people seem to be more attracted to mosquito bites than others, and studies have shown that mosquito bites seem to conform approximately to a negative binomial distribution (also known as the Bascal distribution, the inlay distribution).

Male sex, excess weight, and blood type O all appear to increase the risk of being bitten. Female mosquitoes need to consume protein to obtain enough nutrients to lay eggs, and the normal diet of ordinary mosquitoes (nectar, fruit juice) cannot obtain sufficient protein, so female mosquitoes will suck blood.

<> "The history of mosquitoes far exceeds human history, and the oldest mosquito found to be most similar to modern mosquitoes comes from a fossilized amber in the Cretaceous strata of Canada. In other words, the mosquitoes living on the earth today may have sucked dinosaur blood at the earliest!

It is well known that blood-sucking mosquitoes are female, but most of the time female mosquitoes are also non-blood-sucking, and like male mosquitoes, they feed on plant juice and nectar.

However, when the female mosquito and the male mosquito mate, they will become bloodthirsty and need to find a blood source to feed immediately. This is because mosquitoes need more nutrients when they are breeding their offspring so that their future babies can thrive.

Therefore, the first priority of the female mosquito after mating is to find the prey.

Their prey includes, but is not limited to, mammals, reptiles, birds, fish, and even invertebrates. Therefore, sometimes the natural enemies of mosquitoes, such as frogs, can also be bitten by mosquitoes if they are not careful.

Of course, mosquitoes are also very targeted when looking for prey, after all, mosquitoes also have taste preferences. For example, people with blood type O are the favorite of mosquitoes, and those with high body temperature, people who sweat a lot, people who are physically tired and pregnant women are also the favorite objects of mosquitoes. Therefore, if you want to be bitten by mosquitoes a few times, it is best to avoid excessive physical exertion, and there is also frequent bathing.

Mosquitoes move mostly at night and dusk, when vision is not very helpful, and their most powerful means of detection are infrared perception and smell. In the dark of night, mosquitoes rely on infrared rays emitted by the human body to determine their targets, and the wavelength emitted by healthy humans is 8-12u, which is just within the detection range of mosquitoes.

Mosquitoes can also find targets through chemicals left in the air, such as exhaled carbon dioxide. The mosquito's jaw has a lot of villi, and the sensory cells on it help analyze 72 tastes and provide the mosquito with a location for its prey.

So, when mosquitoes bite you, it's because they like the smell of you!

With both of these methods, mosquitoes can detect and lock onto targets up to 50 meters away. In other words, if a mosquito is the size of a human, they can spot a target up to 15 kilometers away and determine if the target's blood is their favorite taste. Even so, not every female mosquito can suck blood.

However, this does not affect the egg-laying of mosquitoes, except that the number of eggs laid by female mosquitoes lacking blood nourishment is much smaller.

Depending on the species and weather conditions, adult mosquitoes generally live between a week and a few months. The time cycle from the time of the mosquito to the first egg laying is about a week.

Therefore, many mosquitoes only have one chance to suck blood in their lifetime.

a.Lay eggs. b.Copulation.

Correct Answer: a

Only female mosquitoes suck blood, male mosquitoes do not suck blood, and male mosquitoes feed on nectar or plant sap. Female mosquitoes feed on human blood, but not for their own nutritional purposes, they need proteins and other components in the blood to lay eggs.

Mosquitoes have mouthparts called beaks, which act like hypodermic needles. The mosquito uses it to pierce people's ** and then probes around until she finds a capillary to suck blood.

It also injects some of its own saliva to stop the blood from clotting and destroying the bloodstream, which is how mosquitoes transmit diseases.

It then sucks the blood out and into the abdomen, where it is digested and used to lay eggs.