Why are cockroaches called invincible cockroaches, and their vitality is really tenacious?

Why are cockroaches called invincible cockroaches, and their vitality is really tenacious?

Cockroach, commonly known as Xiao Qiang, is called invincible Xiao Qiang, and has extremely tenacious vitality. It is one of our most common pests and the most annoying insect. People always try to get rid of these annoying cockroaches. They often appear in our lives, but no matter how many times we step on cockroaches and spray toxic pesticides, these annoying cockroaches always come out again and again.

So what is the strength of cockroaches and why are they so difficult to kill? According to research, this is because they have a huge genome, which is the largest of all the insects studied. Cockroaches are better at smelling and eating than most insects They have 154 olfactory receptors and 544 taste receptors, more than any insect on the earth. In addition, cockroaches have a gene called pigment cell p450, which enables cockroaches to resist most toxic chemicals.

These genes of cockroaches encode detoxification enzymes, which can find and kill many microorganisms and bacteria, so no matter how dirty the environment is, it is like a five-star hotel for cockroaches. Even a cockroach without a head can live for 9 days or more. Why?

The structure in cockroaches is very special. Cockroaches have few blood vessels, so they don't need a hypertensive circulatory system. When a cockroach loses its head, the wound will quickly solidify due to the action of platelets, and it will not bleed too much. Cockroaches breathe through valves and don't need the brain to control their breathing. They have some small holes in their bodies for breathing.

Even if the cockroach is really trampled to death, it is only a female cockroach. The surface of the egg sheath in its body is very hard. As long as you step on it, many cockroach eggs will be squeezed out, so many cockroaches will grow in a few days. Cockroaches don't have to eat for weeks after they are full, and they can survive for a long time as long as they are not killed by other creatures.