Why the spiders themselves don t get stuck in the web

Here's why spiders don't get stuck in their own webs:

1. Spiders are very familiar with the "topography" of their own webs. The spider's web is made up of longitudinal filaments that are radial and transverse filaments that are spiraling. The longitudinal filaments are not sticky, while the transverse filaments are sticky, so spiders generally move on the longitudinal filaments.

2. In order to avoid accidentally touching the transverse filament and getting caught, the spider will secrete an oily substance and rub it onto the body. This way, the spider won't get stuck in its own webs.

Spider web. Causes of non-sticky spiders: bristle structure; The contact area is kept to a minimum; Anti-stick coating. The first is the structure of bristles on the spider's feet that are densely covered like brushes. These structures reduce the area of contact between the spider and the sticky material on the spider web.

The spider will carefully watch its movements, which also helps to keep the contact area between it and sticky substances to a minimum. In the past, there was speculation that spider anti-sticking relied on not touching the sticky part of the spider web at all, but observation shows that this is not the case. However, when touching the sticky parts, the spider will still be careful about its "landing" and "retracting" movements.

Spiders also have an "anti-stick coating" on their feet. The spider itself secretes an oily substance that acts like a non-stick pan with a non-stick coating to protect the spider from being caught in its web. Some scientists have studied this oily tissue, scientists use cleaning agent to wash off the oily substance on the spider's body, and when putting the spider back into the web, they found that the spider walks more sticky feet, which is much more difficult than walking before, which shows that the non-stick coating secreted by the spider itself can protect itself from being stuck by its own web.

Formation of spider webs:

Spiders use air currents to hold a thin piece of spider silk.

Put it between two plants, or it can climb up the plant with its own spider silk and put the silk together. It pulls the filament taut and fastens it to its tail, then climbs along the filament to weave a second, stronger filament to replace the first. The spider then weaves a thread horizontally that can sag, and then it spits out another thread that is fixed between the bottom of the loop and the objects below, forming a Y-shape.

Spiders add more radiation. It continues this step until the net looks like the spokes of a wheel. The spider shifts to the center of the web and then keeps circling around it, spinning out many spiral-shaped threads to form a dense web center.

It then moves outward in a spiral, weaving some temporary frame threads.

There are several important points, the first spider web has longitudinal and transverse, transverse silk sticky longitudinal non-sticky, spiders generally walk longitudinal silk. Second, spiders have fat on their bodies, especially on their legs. Thirdly, spiders walk, generally only the tips of their legs touch the silk web.

Why don't spiders get stuck in their webs? As the book: The silk web spit out by the spider is divided into horizontal silk and longitudinal silk, and the horizontal silk has a strong stickiness.

The longitudinal filaments mainly play a supporting role and are not sticky. Spiders will choose to move on longitudinal filaments that are not sticky. In addition, spiders secrete an oily substance that will not stick even if it touches a horizontal filament.

Because the spider's legs secrete a special liquid that ensures that the spider does not get stuck in the web.

There is lubricant on the spider's feet.

There are a variety of reasons. Here's why:

One. Different physiological structures of spiders:

First, the spider only places droplets of glue on certain threads of the large web it weaves, and they tend to avoid these threads as they move around the web. Secondly, spiders touch the web with their toes, which have a small contact area, and they have a non-stick coating on their toes. In addition, spiders have special claws at the end of each foot that can grasp the web and pull it towards the elastic hairs on the spider's legs.

When the claws are released, the elastic hairs push the spider web silk away, preventing it from sticking.

Spiders are familiar with their webs, and when they start weaving, they know exactly where they are safe and how to avoid sticky areas to ensure that they don't get caught. Spiders secrete oil from the soles of their feet, so they can walk freely even if they accidentally touch sticky spots. And in order to make the whole web functional, the spider will constantly repair the broken parts, and eat the useless web, and absorb the nutrients contained in the spider silk repeatedly.

Two. Characteristics of cobwebs:

However, not all silk in cobwebs is sticky.

As shown in the figure above, the silk capture is the viscous silk. Spiders can also secrete a type of oil that will not be stuck for a while.

Some of the webs themselves are not sticky, like ghost spiders.

Although the webs weaved by different species of spiders often vary, there are generally two types of spider silk: radial spider silk and oval spider silk. When spiders build webs, they first build radial skeleton silk threads --- longitudinal filaments. The longitudinal filaments are mainly used to support the spider web structure, which is strong but non-sticky.

After the skeleton is completed, the spider then weaves a spiral of silk in a counterclockwise direction, which scientists call a transverse filament. If you look closely, you'll see that there are water-dropping bumps on the strands, called sticky beads, and their stickiness makes it difficult for insects that intrude by mistake to get out.

Three. The "brilliance" of spiders:

If you look closely, you'll also see that the webs are usually not perpendicular to the ground, and spiders only touch the webs with their burrly feet. In this way, the whole body hangs from the cobwebs, further reducing the possibility of getting caught.

In case it hits a sticky horizontal filament, the spider will perform a trick "unique move". Everyone knows that oiling is the best way to make the surface of an object non-sticky. Spiders secrete an oily substance that spreads it on their bodies, especially their feet, and it is this oily substance that keeps it from sticking even when it touches a horizontal filament.

Because the body and legs of the spider have lubricant oil, it is the secretion produced by the spider, and the web formed by the spider does not stick to the oil, so it cannot stick to itself.

The spider's web is anti-enemy, and it has no adverse effect on itself, and it will not stand on its own at all, because the spider's web is the silk pulp discharged from its stomach, and it is discharged through the small hole at the end of the tail to solidify into a relatively thin silk thread after encountering the air, and it will form a web after a long time, this kind of web is with some stickiness, but this kind of web has a rejection of the oil secreted by the spider itself, so the spider web can stick to other small insects, but cannot stick to itself.

1. Why can't spiders stick to themselves in their webs?

There are two different theories about why spiders can't stick to their webs, in addition to saying that there is grease on the spider's legs and body to pat the hole, there is also a theory that the spider has a non-sticky main line when it builds the web, and it usually walks along this non-sticky line when it walks on the web, so the spider can't stick to itself, whether this is the case or not, it still needs to be observed and studied. <>

Second, the body structure of the spider

The spider is a relatively important existence in nature, its body long plate is mostly between 1 90 mm, and the body is divided into two parts, chest and abdomen, its head is covered with dorsal armor and chest plate, and there are two pairs of appendages on both sides, the first pair of appendages have chelicera, and the tip of the chelicera has a natural opening, which is the place where it discharges venom. The spider's second pair of appendage whiskers are the tools used to obtain food and the most important sensory organ on its body. <>

3. The living habits of spiders

Spiders in nature mostly take young insects as food, it can be divided into two kinds of safari type and sedentary type according to the way of life, the nomadic spider is mainly hunting and predating, it is a kind of spider that has no fixed place, does not build a web and does not dig a hole, this spider has no nest, and the sedentary spider will dig and receive the web, has its own nest, and has a fixed residence. Spiders are also independent beings, keeping a certain distance from their companions and not aggressive each other.