ANIMALS

Why don't spiders get caught in their own web?

Why don't spiders get caught in their own web?

The so-called cobwebs, spider webs are a work of engineering by design and resistance. They serve as traps and are made of more than five types of silk, which differ from each other due to their protein and water-based composition.

Despite the differences between these nets, a spider web always meets the following conditions: it combines at least three of these: a hunting net, made of sticky and elastic silk; a framework net, with more consistent and less elastic threads; and an anchor net, made of thick and stiff silk.

When an insect falls into the net, it gets stuck on the hunting silk. As he tries to escape, he only gets more and more entangled in the silk trap.

The movements of the insect produce vibrations that make the spider realize that a prey has fallen into its webs and go to meet it to paralyze it with an injection of poison.

In its movement, the arthropod avoids stepping on the sticky thread and always tries to circulate through the alternative silk routes.

Source

Video: Why dont spiders get stuck in their own webs? (October 2020).