"Trivia" You Don't Know As we all know, cockroaches have always been nicknamed "the invincible little strongman". No matter you use various biological and chemical weapons to eliminate it, or use physical means to chase it, it will still survive strongly. in this world.

"Trivia" you don't know

As we all know, cockroaches have always been nicknamed "the unbeatable little strong". No matter you use various biological and chemical weapons to eliminate it, or use physical means to chase it, it will also Still strong in this world. There are many rumors about cockroaches, for example: cockroaches are about the same age as dinosaurs; cockroaches cannot fly, they can only glide, and only pregnant cockroaches can fly; cockroaches can survive for 9 days without their heads; if you find one at home For a cockroach, there are about 20,000 members of its family living in your home; So among these rumors, are they true or false? Today I will take you to reveal the truth.

Cockroaches are of the same generation as dinosaurs. In terms of seniority, dinosaurs should be called cockroaches as their elders

Cockroaches are insects of the order Blattida. The fossils of the order Blattella that have been excavated by humans show that at least in the early Middle Carboniferous Vespa period (about 320 million years ago), cockroaches have already appeared, while dinosaurs only appeared in the late Triassic period 245 million years ago. Cockroaches existed in the world more than 100 million years earlier than dinosaurs, so cockroaches The seniority is naturally much higher than that of dinosaurs.

Cockroaches can only glide but not fly? Have you never seen cockroaches in the south?

I guess those who have never seen cockroaches flying are northerners, because the cockroaches in northerners' homes are mainly German cockroaches . Although they have wings, they basically cannot fly. The large cockroaches in the south are from the family Blattidae and Turtleidae. They can not only glide, but also fly very smoothly. Although their wings are primitive, cockroaches can dive, climb and turn when flying, and their flying posture is similar to that of a praying mantis.

And there is a rumor that "only pregnant cockroaches can fly", this statement is also untenable. There are generally rumors on the Internet that "flying cockroaches do this because they want to protect the fetus in their belly." Here is a counterexample to dispel this rumor: Cockroaches in the family Blattidae, the order Blattidae, have wings in males and wingless females. of. No matter how pregnant female cockroaches are, they cannot fly without wings.

Can a cockroach survive for 9 days without its head? This is quite reasonable

Generally speaking, if a headless cockroach does not encounter a predator and the wound is not infected by bacteria or viruses, then it is not a problem to live for ten days and a half. In fact, not only cockroaches, but also many insects can survive without their heads. Can survive for a while.

Why can a cockroach that has lost its head survive for a period of time?

1. Because it has a completely different breathing and blood circulation system from humans. Cockroaches rely on valves to breathe, and each section of its body has valves and , so it can still breathe without its head.
2. The cockroach's blood circulation system is open and does not require relatively high blood pressure, so it will not cause a large amount of blood loss due to some wounds, and cockroach wounds can solidify quickly.
3. Cockroaches are cold-blooded animals, which means that their metabolism is relatively slow. They only need to eat one meal to sustain life for several weeks. If a newly fed cockroach has its head cut off, it can even survive. For a month, he finally died from being unable to eat.

If you find a cockroach in your home, its family will number 20,000?

This rumor is quite vague to begin with. Where was the "one found"? Are cockroaches most likely to be found in the kitchen or in the bedroom? Was it discovered during the day or at night? Do you find one in one day or one in ten years? So these rumors cannot withstand scrutiny.

But Xiaoman is here to popularize some science. If you often see cockroaches crawling out of your home during the day, it means there are a lot of cockroaches in your home. Generally, cockroaches are nocturnal animals and can only hide in the dark or in gaps during the day. Once there are so many that even the gaps are filled, the extra cockroaches can only come out and wander around during the day, so it is natural for you to see them.