The spider spits silk and weaves its web regularly, does it also have thoughts? What is the science?

Spiders don't have thoughts, and weaving webs is innate, learned by spiders after natural evolution. Strictly speaking, spiders do not spin silk, and spider silk comes from small holes in the stomach, spider silk.

Stored in a sac in the abdomen. So, spiders don't spin silk.

In addition, there are many types of spiders, some spiders have a very short life, but some spiders have a long lifespan, not all spiders can weave webs, although some spiders can spin silk, but spider silk is not used to weave webs, but to escape.

Let's talk about the process of spider weaving webs first, the spider first hangs a silk thread from a high place, this silk thread will flutter with the wind, and then hang on a certain object, so that the layout of the first silk is completed, and then around this main filament, the spider is arranged. Of course, the spider has no thoughts, but it doesn't mean that it is a fool, it knows that there are often insects, and it is also suitable for weaving webs, so it will go there to weave webs. In nature, it is common for two spiders to choose a location to weave their webs, and even cut off the web woven by the other spider, but this is relatively rare.

In fact, although there are rules for spider webs, there is absolutely no thought, and there is no scientific principle, there are many species of spiders, not all spiders can weave webs, only a part of them can weave webs, which is considered species evolution.

After the formation of instincts, people are born with it. Even the fishing nets we use are made from spider webs. Like some large spiders, they hunt by hand-to-hand combat, not by cobwebs at all.

What's more, spider silk is just a tool it uses to escape and climb high. In addition, there are some spiders that weave webs that are not as regular as expected, and even weave webs to trap themselves or spider eggs in them. In short, not all spiders weave regular, good-looking webs, and not all spiders do.

Therefore, only some spiders weave their webs regularly, and it can be determined that it has no thoughts, and the reason why it can weave webs is completely out of instinct, from the hunting instinct, which is the instinct engraved in the spider's genetic sequence, and the spider belongs to the temperance animal, which determines that it cannot have thoughts.

Researchers at the University of Konstanz in Germany, published in the Proceedings of the National Academy of Sciences, found that spiders show "periodic retinal movements" during sleep, accompanied by "twitching of the limbs and curling up of the legs", suggesting that they may dream like humans.

The study, led by Daniela Roessler, an evolutionary biologist at the University of Konstanz in Germany, reportedly used infrared cameras to film the sleep of more than 30 small jumping spiders.

The researchers found that spiders showed "periodic retinal movements" during sleep, accompanied by "limb twitching and leg curling." This is similar to a human's"REM sleep"When we experience vivid dreams, our eyes move quickly from side to side behind closed eyelids.

The results of the study suggest that spiders also experience REM sleep and therefore may also have dreams.

As far as I know, there are thoughts during the day and dreams at night. So spiders should be thoughtful.

It has no thoughts, but it spins the web as an instinctive reaction, which is the nature of spiders, and the specific scientific principle is that spiders are animals, and they will instinctively spin silk webs, because it needs this web to hunt.

I think it also has thoughts, because spiders are also very intelligent, and they are also very hardworking, and they are also very serious, so I admire the spirit of spiders, but I think this is a very normal thing, because spiders are also higher creatures, so we must look at it rationally.

Spider silk has good elasticity and strength, while also being sticky.

These sticky substances are very characteristic and ensure that the spider silk does not form a crystalline web too early. Spider silk is like a spring soaked in liquid, and no matter how you squeeze and stretch it, it has the ability to recover as before. The use of spider silk began in 1909, and spider silk was used as a crosshair for optical devices in telescopes and gun aiming systems during World War II, but after the 90s of the 20th century, in-depth research on the genetic composition, structure and morphology, mechanical properties of spider silk protein began to provide the possibility for the commercial production of spider silk.

Compared with silk, the physical and chemical properties of spider silk have very obvious advantages, in terms of mechanical strength, spider silk fiber is close to the highest strength of carbon fiber and high-strength synthetic fiber aramid, kelve, and other strengths, but its toughness is significantly better than that of the above fibers. Therefore, spider silk fibers have broad application prospects in the fields of national defense, military (body armor), construction, etc. Natural spider silk is mainly used in webs, and the yield is very low, and spiders have a cannibalistic personality and cannot be cultivated at high densities like silkworms.

Therefore, the production of spider silk from natural spiders is very limited. With the development of modern bioengineering, the artificial synthesis of spider silk protein by genetic engineering is a new breakthrough, and it is possible to form an artificial spider silk fiber production plant with a certain scale in the near future.

01 A large number of spiders spinning silk and forming webs indicates that sunny weather is coming. In order to increase their food, spiders will weave their webs in windward areas in sunny weather, especially after rain, in order to get more food.

Spiders spin silk to protect themselves and catch food at the same time. A large number of spinning nets heralded the arrival of sunny weather. When the weather is good and there are more insects coming out for activity, there will be more chances for spiders to catch more prey.

In order to increase their food, spiders will weave their webs in windward areas in sunny weather, especially after rain, in order to get more food. Therefore, according to this phenomenon, when people see spiders coming out to form webs, they know that the next day will be clear.

The most important feature of web-forming spiders is its web-forming behavior, spiders secrete mucus through the protrusion at the tip of the tail silk sac, which can condense into very fine silk when it encounters air, and the webs formed by silk are highly viscous and are the main means of predation for spiders.

The spider web is an extension of the spider's various sensory organs, and with the information transmitted by the vibration of the slender spider silk, the spider can determine the location and size of the person who threw the web at a glance. At the same time, the spider's web is also the spider's dwelling and shelter, as well as its marriage bed and nursery.

Most spiders catch their prey by weaving webs. So how exactly do spiders weave their webs? The spider's abdomen has a raised organ called a spinl.

It can secrete a type of mucus. This slime condenses when it encounters air. This is the main material of spider webs.

On the surface, spider webs are an inherent ability in their own right, innate.

But for spiders, weaving webs can be called a very complex mental and physical work, from the design of the web, the selection of the location, to the on-site construction work, it is difficult for idle people to do it.

If we go back to the ancient times when spiders originated, it is not difficult to find that the ancestors of those spiders that can build webs, such as garden spiders, should also not be able to build webs, and the instinct of spiders to weave webs should be created by their ancestors through the survival practice of many years, that is, the instinct of spiders can only come from the three survival practices of survival competition, species competition and reproductive offspring in order to adapt to nature.

It is not difficult to imagine that the Archaeopteryx inadvertently left some messy silk in the grass or on the ground during the activities before and after laying eggs, so that the Archaeopteryx inadvertently weaved a messy and simple spider web in the grass. Since the range of Archaeopteryx is usually not very large, when a small insect hits the web that the Archaeopteryx inadvertently weaves and gets caught, it will be spotted by the Archaeopteryx moving nearby, and it will become a meal for the Archaeopteryx. The accumulation of materials for this perceptual cognition will produce a leap in cognition, which will become the empirical cognition in the spider's mind.

Empirical cognition in the spider's mind is the first stage of the whole cognitive process, that is, the stage from perceptual to experiential.

When the progenitor spider realized that the spider's web could help it obtain food, it had a second stage of the cognitive process, that is, the stage from experience to perceptuality, that is, the experience gained from the first cognitive stage was put into the practice of survival to see if these experiences were practical. As a result, some Archaeopteryx will tend to stay near their own webs, and will begin to use their own messy webs left in the grass or on the ground to help them obtain food, and use them as a practical survival knowledge.

On the basis of the existing successful experience, some of the Archaeopteryx spiders who had mastered the knowledge of food with the help of spider webs gradually began to weave some more complex spider webs in order to obtain more food, and their experience of weaving spider webs was constantly improved through the practice of survival over a long period of time. These experiences have been tested by countless survival practices over a long period of time, and will produce leaps and bounds again and again. Later, after a long period of survival practice and natural selection, some of the descendants of the Archaeopteryx finally improved the uneven thickness of the spider silk into a uniform and very slender spider silk by conforming to the natural survival practice, and improved the clueless spider web into a spider web with exquisite geometric patterns, and also mastered the survival skills of catching prey on the net for a long time, and through survival practice, they also had more advanced silk spinning organs and web weaving tools, and when falling from high places to low places, He mastered the survival skills of setting up a silk thread at a high place first, and then falling while releasing the thread, and passed on the survival skills of spinning silk and weaving nets from generation to generation.