Cockroaches can swim, why fall into the water in less than 3 minutes drowned?

The cockroach is one of the "four pests", it has a strong reproductive capacity, and rampant activity, especially in the dead of night, cockroaches will sneak out from the cracks in the walls, under the bed, and furniture, running recklessly on the ground, walls, gnawing on our food, and as very strong animal life, cockroaches will fly, will run and swim.

If you have fought with cockroaches, then you must have tried to kill them by spraying them with the shower in the bathroom, throwing them into the toilet, and other methods. But these methods hardly work on cockroaches unless you are using hot water. If the cockroach can swim, why to put the cockroach into the water in less than 3 minutes it died. We came together to understand the mystery of the cockroach "drowning".

The undead little strong said that the cockroach, of course, it does not mean that it is invulnerable to guns and knives we can trample it flat with one foot, so "undead" is the vitality and survivability of the cockroach.

First of all, the survival ability of cockroaches is undoubted, they are small, suitable for hiding, so whether our furniture, some crevices, the kitchen, or sewer, they can survive very well. Secondly. Cockroaches are almost not picky about what they eat, as long as they can eat, even if it's food waste on the inside of the sewer, they can eat with gusto.

Third, the cockroach in the case of no food and drink, at least 20 days, up to 60 days, there is no food, they live longer, the most horrible is the cockroach even if the head off, can not only survive, and can also live at least 1 day, up to 7-8 days, this "unbelievable" ability, so that most animals are This "unbelievable" ability makes most animals sweat.

The last is the cockroach's antibacterial and anti "toxic" ability, scientific research shows that the cockroach body has at least forty kinds of bacteria and a dozen viruses, these bacteria and viruses to mammals, have long been very sick, but the cockroach is nothing, this is because the cockroach body bactericidal molecules synthesis ability and excretion speed The result

This is because of the ability to synthesize bacterial molecules in the cockroach's body and the speed of excretion, which can effectively control the number of bacteria and viruses in its body, and the faster excretion speed also greatly reduces the time for bacteria and viruses to multiply in the body, so the cockroach is true "undead".

It is because carrying so many bacteria and viruses, cockroaches have become one of the "four pests", because although the appearance of the cockroach is relatively smooth and clean, "the outside of the gold and the outside of the wool", and because of their excretion rate is very fast, almost walking while pulling, while eating So the bacteria in its body will contaminate our food when it eats our food, and if we don't know the situation, without treatment (high-temperature heating, etc.), we may get sick.

In addition to this, cockroaches sometimes crawl into bed, which is more dangerous because they get into people's ears if they are not careful.

Because cockroaches especially like the taste of fatty acids (bread and cheese contain fatty acids), and the secretions of the human ear contain volatile fatty acids, and cockroaches like warm, dark environments, so they have a chance to crawl into the human ear, according to the statistics of a hospital in South Africa in 2006, in this year a hospital received 98 cases of foreign objects into the ear, of which 43 cases are cockroaches The cockroaches that entered the ears were the German cockroach (native to northern Africa), which can be found almost everywhere in the world.

Therefore, among the "four pests", cockroaches are second only to mosquitoes and higher than rats and flies, and sit in the second chair of the "four pests".

Why will the cockroach drown if it is good at swimming?

Strictly speaking, cockroaches do not swim, they can float on the surface of the water and their bodies have a lot to do with the surface of the water when the limbs move only their stress response (struggle).

First of all, the cockroaches can float on the surface of the magic weapon appearance, we see the cockroaches are shiny, this is not an illusion, but because the cockroaches are covered with a layer of grease, the layer of grease has good drainage, which is the reason why the cockroaches are called "grease stealers".

In addition, the body of the cockroach itself is relatively light, so when the cockroach falls into the water, relying on the body surface drainage of grease can float on the surface of the water.

Secondly, the cockroach's respiratory system is not the same as ours, as an arthropod, they also rely on the abdominal valves to breathe, when falling into the water, their valves will immediately close, and then rely on the oxygen in the body to survive temporarily. After the cockroach is stabilized on the water surface, the tiny bristles on its body will wrap the air to form an air cushion, which will make the part of the cockroach that enters the water smaller, and at this time its valves will be exposed to the water, and it will be able to breathe normally.

Therefore, the cockroach in the still water is not drowned, on the contrary, it will quickly swim to the edge by swinging its legs, and then climb up the smooth sink or toilet wall

If so, why will the cockroach be drowned again? The problem lies in the body oil. The grease on the body surface of the cockroach can be destroyed, when they fall into water containing detergent, shampoo, soap, and other substances, these substances will quickly destroy the grease on its body surface, at this time only by the body surface of the bristles to form the air cushion is not enough to support their valves exposed to the water, so in the absence of oxygen, the valves open, the water into the body, it will be drowned.

Conclusion

Although the cockroach can not really "swim", its body structure makes it has strong drainage, so it can still swim in the water. However, it floats mainly on the body surface of the grease, once the water can destroy its grease substances, then soon the cockroach will drown, so the direct spray cockroach with the shower is not working, but if combined with a shower gel or shampoo, the cockroach will certainly die.