Why do flies always like "rubbing hands" and still twist their heads and play?

When it comes to flies, the first reaction of most people is dirty, unhygienic, pests ... Although the flies "everyone shouts", it also has an interesting side: sometimes the flies will pull their heads down and play; Flies often fly, then stop and start rubbing their hands; see here, everyone has such a question: Why do flies have these strange behaviors?

Then I will give you a science.

Can flies unscrew their heads and play?

Why would the flies twist their heads? Just because of fun?

This is actually not the behavior of flies. It is more of their unconscious movements. It may be that the flies accidentally pull the head off when they rub their hands and face their faces. Will play for a while.

For the vast majority of animals, the head cannot survive after falling, but flies are insects. The circulation system in their bodies belongs to the open tube circulation system. Moreover, flies can breathe with the abdomen, so when the head is twisted, the flies can only be seen, and they can still move.

Because there is no head, the flies cannot be excreted normally, the energy is constantly lost, and the possibility of being starved to death is very high. It may also be caused by the infection of bacteria due to a wound infection.

Why do flies like to rub their hands?

1. Clean the body

On each paw of the flies, there is a hook claw and claw pad. The claws can grab the object to support the body. The glands on the claw pad can secrete liposuction and increase adhesion. The reason why it can't fall down on the smooth glass.

Because there is no nose, the flavor of flies to distinguish food depends on the taste and sensor of the legs. If the legs are covered with dirty things, it will affect the judgment of the food. In order to correctly distinguish the smell, you have to rub your hands often to ensure the accurate sensitivity of the taste organs.

2. Help quickly take off and landless landing

Flies still like to fly everywhere. When you see something, you will rush up to taste. The legs are easy to stain all kinds of food. Stopped your hands and feet in your spare time, and clean up the food stained on it, which is conducive to your own take -off and take off and take off and take off and take off and take off quickly. No barrier to land.

3. Attract male mating

In fact, in the flies world, the female flies that can rub their hands and rubbish their hands are charming. Whenever the reproductive season, female flies will release their sexual phenomena by rubbing their hands. When encountering male flies, they will speed up to attract male mating.

All flies are pests?

Of course not, in Australia, flies are the beneficiary of the benefit of the people.

This is because the Australian cities have good sanitary conditions, and environmental changes have caused flies that originally inhabited in garbage to face the disaster. As a last resort, they moved to the grassland, forests and fields. Over time, flies changed their past habits in the new environment, mainly based on food juice, nectar and tender leaf wild fruit.

At present, Australian flies have become one of Australian commodities. It is used as experimental materials for scientific research units and as bait. American countries such as Brazil and Mexico also use this to make delicious insect foods. More importantly, the Australian flies worked hard to wear flowers and grass, acting as "the media of flowers", bringing huge economic benefits to local agriculture, and being a "God of Wealth" by the people of Australian grasslands.

In addition, scientists have found that there are many sensors on a pair of flies, making it particularly sensitive. An insect scientist at Illinois University in the United States once used flies' sensitivity to bloody and body odor, to find the murderer to commit the crime and calculate the time for the murder.

It is also found that a "antibacterial activated protein" will be secreted from time to time. The effect of this activated protein is much stronger than the antibiotics developed by humans.

In this way, whether the flies are pests or pests, it depends on how people use them.

Can I still eat foods stained by flies?

First of all, we have to figure out what the flies have done on your food, there are three main things:

1. Residual germs

The flavor of the flies is on the feet, considering the flies like to make a mess like a dirty place like the garbage dump. Therefore, their bodies and legs may carry pathogenic bacteria. As long as they have contact with food, pathogenic bacteria may be left on food.

Second, spit and diarrhea

苍蝇没有牙，只能吐出唾液和消化液的混合物，先消化食物，再吸入胃里，如果有食物颗粒实在消化不掉，苍蝇会用另一根吸管先吞下，再用唾液反复消化，直到Can be sent into the stomach.

Therefore, flies will continue to repeat this vomiting, sucking, vomiting, and sucking.

Three, spawning

Adult female flies produce 4-6 eggs 4-6 times in the 2-4 weeks of life, about 300-900 eggs, and the food is likely to be covered with flies. Nausea.

The food stained by the flies may have been stained with bacteria, vomit, eggs, and excretion. For health and safety, try not to eat flies.

How to effectively drive flies?

Drug prevention

Drugs used to prevent flies are mainly pesticides: organic phosphorus pesticides, amino methyl acid pesticides and insecticides.

Coin driving

Prepare a transparent plastic bag, put water in it, then throw a few dollars of coins in, tighten the bag, and hang it on the edge of the window. Many stalls in Hong Kong, Macao and Taiwan use this method to drive flies. What is this principle?

Because the eyes of the flies are complicated, very sensitive, and the water bag and coins can scatter the light. For the flies, it looks dizzy. When we hang the water bag on the side of the window, the flies dare not fly in.

Yellow board seduce

Flies have the characteristics of yellowing. You can hang a few yellow sticky insects at home, which can play a role in eliminating the flies.

Ultraviolet lamp temptation

For thousands of years, insects have flying with the UV of the sun, and ultraviolet rays have a strong visual response to almost all insects. Through the complex electro -optical reactions of many flies, the flies are the most sensitive to the spectrum of about 365 nm, and the 365 nm ultraviolet rays are harmless to the human body.

Therefore, a 365 nm ultraviolet lamp can be placed at home, which can also have a good effect.

Smell

Prepare a small bowl, add a spoonful of brown sugar, pour some beer, then cover it with plastic wrap, take out a small hole on it, and complete a trap to capture flies.

Because the flies will be attracted by the taste of brown sugar and beer, they can't come out into the bowl.

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