these spiders weave their webs to hear better

Beasts of Science is like a collection of short stories. Beautiful stories told by the living in all their freshness. But in all its complexity. Bracket to admire the treasures of the world. In this new episode, let’s discover a little beast, not always the most popular one: the spider.

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[EN VIDÉO] How do spiders weave their webs?
Spiders are adorable. Despite their small brains, they are capable of complex behavior. Like building a network. Using infrared cameras and artificial intelligence, researchers from Johns Hopkins University (USA) managed to document this process. A kind of dance, the rules of which now need to be clarified. And understand how they are controlled by the spider’s brain. (in English) © Johns Hopkins University

To overcome your fear, you must know how to tame it. This is advice given to me by a psychologist I consulted a few years ago. A better acquaintance with spiders should have helped me overcome my archophobia. I’arachnophobiafor those fortunate enough to ignore it, this is fear of spiders. An irrational fear that became really overwhelming for me… when I moved in alone. And that I decided to take responsibility the day I poured a whole can of insecticide on one of these beasts that had snuck in on me. bath !

To tell you everything, I have come a long way. Because in the arachnophobia genre, I was at the stage of a real panic attack. I remember this magazine, which I was never able to open. Simply because the cover featured a spider. Therefore, at first it was necessary to agree to simply write the word. In a pen. On the keyboardfroma computer. Agree to look at pictures of spiders. Then video. Cool videos, that’s for sure. Not the horrors that today are found on social media .

And then I could learn to discoverUniversespider. His network. His manners. Its features physical . Hey, did you know that spiders don’t have ears? At least not in the sense that… we’re serious! However, this does not seem to prevent some of them from not only feeling vibration their prey when they fall into the web, but also literally respond to sounds. Thanks to the nerve receptors located on their paws and working like ears. capture sound wavesand transmit impulses spider brain .

Hear his prey arrive, but also his predators

Researchers even now believe that spiders – at least some of them – have keen hearing. They could hear us talking across the room. Even if what they hear is more like a poor quality phone call. And we have to admit, there’s nothing to suggest that the spiders are really interested in what we have to say…

Where can we start asking ourselves the question ofintelligence From these small animals we notice that they are capable of weaving a web that serves as an amplifier for sound. A bit like antennas radio telescopesthat we point to the sky in the hope of capturing alien message .

Spiders of the species that English speakers call bridge Spider “ or Grayspider cross » — understand, “Spider Bridge” Where “gray cross-spider” — and who live throughout Europe and most of North America, seem to have learned to weave a web that serves outer ear . Canvases that may be ” eardrums nature is the most efficient.

Thoseweb10,000 times the size of your body. And their vibrations can be transmittedsensorsnerves, which are nothing more than small hairs, on their legsarchitects. So that they can hear birds or crickets a few meters away. Even not less than ten meters, the researchers imagine. It remains to be confirmed that spiders are indeed able to distinguish between the sounds made by one and the other. Sounds made by predator and prey. But it would seem that these little creatures are definitely… not so stupid after all!

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