Insects

Spider karakurt: where it can be met and how to behave while

There are many dangerous animals on our planet. Feline predators with one of their kind warn that jokes with them are bad. The white shark leaves no doubt about its intentions. Many people know that one of the most venomous snakes on earth - a rattlesnake - can kill seventy-five people out of one hundred bitten by it. But there are more dangerous creatures in the world. They have a terrible poison, which is stronger than the poison of a dangerous snake fifteen times. This is a rather modest-sized spider karakurt.

People have different attitudes to arthropods - someone is afraid of them, someone causes a feeling of disgust, but few people think that a meeting with such a small creature can end in death.

Spider Karakurt: Description

The name of this creature comes from two words: “pun”, which is translated into Russian as “black”, and “kurt”, which means “worm”. And its Latin name - Latrodectus tredecimguttatus - fully conveys the outward signs of our story hero: thirteen spots or points located on the upper side of the abdomen.

This spider is also called the black widow. Firstly, because it is in this color that his belly, head and legs are colored. Widow - because the female, whose size significantly exceeds the analogous parameters of the male (10-20 mm, and the male 4-7 mm), eats her chosen one immediately after the marriage ceremony.

Appearance and features of the structure

Outwardly, this spider seems, if not cute, then at least not causing disgust - it has neither wool nor fluff, like many of its relatives (for example, a tarantula). However, the karakurt spider bite is extremely dangerous, and if a person does not give first aid, he may die.

This spider has a ball-like belly and head. Between themselves, they are connected by the seventh segment (like our vertebra) of the cephalothorax. The extremities diverge from the abdomen: four pairs of legs and two pairs of jaws.

The abdomen is a symbiosis of telson (anal lobe) and eleven segments. The female has chelicerae (upper jaws) that end in hooks. And on the other side of the jaws are poison glands. The most dangerous is the female.

Reddish-orange dots with a white rim flaunt on the back of a spider. They can be of any shape. It is for him and you can determine what is watching you karakurt. Growing up, the spider (male) does not lose color - dots remain. And the female significantly changes: sometimes, instead of spots, she has yellow stripes on her abdomen.

Habitat

The spider karakurt, the bite of which is deadly, in our country mainly lives in the Crimea, in the southern regions of the country. In addition, it can be found in the south of Ukraine, in Afghanistan, Kazakhstan, in the Mediterranean, in Southern Europe, Central Asia and North Africa, as well as in the Astrakhan steppes.

In recent years, the population is migrating, which is probably due to global warming, and today these dangerous creatures are already found even in the Moscow region, Altai Krai, several regions of Russia - Volgograd, Novosibirsk, Rostov.

These spiders build nests in secluded places:

  • in crevices
  • in mouse mink,
  • in the walls of mud houses
  • in grooves in the soil.

Karakurt prefer steppes and arable land, choosing for themselves plots of aryks, ditches, salt marshes, ravines, on wastelands. They avoid open spaces.

Spider Karakurt: Bite

We have already said that if you are attacked by this creature, the consequences can be very serious. Human skin can not bite through the spider karakurt. The bite, fraught with serious consequences (up to death), is the “handiwork” of the female. As a matter of fact, males do not even have poisonous glands.

Female chelicera are so strong and sharp that they pierce not only the skin, but also the nails. These individuals are especially dangerous in the mating season (July - end of August).

What is a bite?

To help a person in time, you need to know what a karakurt bite looks like. Unfortunately, we must admit that in the first few minutes it is visually almost imperceptible - it resembles a small abrasion. It feels more like a trauma to a mosquito bite, as a result of which a tiny speck of bright red color appears, which begins to fade before your eyes. This is the cunning of the Karakurt bite - the symptoms begin to appear only after two or three hours. At the first sign, the victim needs urgent medical attention. And even better if the necessary measures to take immediately after the attack of a poisonous creature.

Karakurt bite: symptoms

Some victims say that after thirty minutes (although usually later) they felt a soreness in the whole body (as at very high temperatures). The loin begins to hurt, the upper and lower press, the pain increases, becoming unbearable.

After some time, the stencils sharply subside, and weakness falls on the person. The first legs become weaker, after them the arms, and then the whole body. The victim turns pale, tears flow from him, nausea rises, and his heart seems to burst from his chest. When not providing assistance, clouding of consciousness occurs. A person ceases to assess the situation, to recognize others, he develops depression and fear. In the affected area, skin temperature rises, the muscles become painful. You may experience a sharp pain in the abdomen (as with appendicitis).

Symptoms after the treatment started to subside within three days, but paresthesia, residual seizures, weakness and anxiety may persist for several more weeks and even months. To avoid death, the victim must be administered an antidote - serum. This can be done only in a hospital or other medical facility (clinic, medical center). But what to do with the bite of karakurt, if you are away from the city? After all, doctors warn that in the first ten, maximum twenty minutes, the victim should be assisted.

Spider attacked: what to do?

Undoubtedly, the qualified help of physicians at a spider bite will help to avoid serious complications and speed up the recovery of the patient. First aid for karakurt bites involves the following actions:

  1. First of all, you need to calm down, it will help you to concentrate and make the only right decision.
  2. Immediately call for medical assistance, and if there is no such possibility, try to take the victim to the hospital.
  3. Before the arrival of the doctors, pack the person, provide him with complete peace, so that he moves less, because movements will accelerate the spread of the poison.
  4. In place of the bite, apply ice or a cold compress, which will slow down the absorption of poison into the blood and its further spread throughout the body.
  5. If the bite is on one of the extremities, apply an elastic bandage or any dressing above the affected area, but it should not restrain blood flow.
  6. It is necessary to take an antihistamine that minimizes puffiness, slightly reduces itching and other manifestations of allergic reactions. This may be Suprastin, Agistam, Loratadine, Claritin.
  7. Give the patient plenty of fluids, better sweet tea.
  8. Do not allow the patient to comb the bite site - this will aggravate the situation.

Hospital treatment

Medical workers should be informed that the patient was attacked by karakurt. A bite can cause anaphylactic shock, which will require immediate action. Then the patient will receive intravenous serum, after making skin tests.

Going to nature, you need to know that karakurt is not the first to attack, but if you do not notice it, step on it or on its nest - trouble can not be avoided. In this situation, only competent and coordinated actions of your fellow travelers will help to avoid tragedy.

Biology of the species

Description karakurt spider begin with its size. The species has clearly expressed sexual dimorphism, in which the female in the span of the legs reaches twenty millimeters, and the male is only 5-7!

Look at the difference between the sexes in the photo of the male and the karakurt female.

Male above, female below

Distribution area

Naturally, having heard about dangerous bites, each person is interested in where karakurt lives. This representative of black widows prefers forest-steppe, steppe and semi-desert zones with a warm climate. Therefore, its habitat is in the south of Europe, in Central Asia and in the north of Africa.

As for the post-Soviet space, a black widow is found in Azerbaijan, Kazakhstan. In Priazovsk Mariupol, Donetsk region of Ukraine, karakurt was also recently noticed.

In Russia, karakurt is also very widespread. This mainly concerns the southern regions of the country and those regions that are located in the steppe zones. For example, karakurt is often found in the Crimea and the Rostov Region, in the Novosibirsk Region and the Altai Territory.

In addition, scientists have documented cases of catching karakurt even at the latitude of the Moscow region, which occurs during the migration of spiders in particularly hot years. But such appearances are of a single character, since the black widow cannot bear the harsh winters of the middle zone of our country.

The habitat of a black widow in nature is distinguished by a burden to the plains. It can be:

  • steppe
  • arable land
  • the area near the ravines or artificial aryk,
  • salt flats,
  • wasteland.

Black karakurt eats insects that fall into its network. These are usually the species of arthropods that live directly next to the spiders themselves:

Interestingly, the victims of karakurt come across horizontally stretched nets. At the same time, the Karakurt web is not distinguished by the grace of circular lines, but is made as if randomly, but at the same time it is very viscous and does not give the insect that has entered it any chance of escape.

A spider is paralyzed by a poisonous insect, and then sucks its liquid tissue.

It is interesting! Did you know that spiders have blue blood? It turns out that the formation of blood in them is not responsible for red hemoglobin, but blue (copper) hemocyanin!

Reproduction and development

In the summer of spiders, finding a secluded place, begin to mating. The Karakurt male arranges a patina, flavoring her with his pheromones to attract the female. As noted above, after mating, the male is ruthlessly eaten, and the female begins to look for a secluded place for arranging the clutch in which she places up to 130 eggs.

Unlike other types of arachnids, the female karakurt forms from two to four cocoons in which it lays eggs. For egg-laying, it uses rodent burrows or similar secluded places. Here she weaves a web, to which she hangs her cocoons. When the autumn cold comes, the female dies, having outlived her eaten spouse a little.

Karakurt female with cocoon

The eggs in the cocoon are reliably protected from the cold and easily tolerate the winter, and in the spring they begin the struggle for existence. In the autumn, the wind tears the cocoons from the cobwebs, and the clutch begins its journey across the steppe, thus expanding the habitat of the species.

Our help! Every 10-15 years, a burst of reproduction of karakurt occurs. In such years, females are able to postpone until 1300 per season.

Spiders appear quickly, within 10-15 days depending on the weather, but they do not leave the cocoon, but live in it until next spring. At first, they feed on the food supply that nature has laid inside their bodies, then switch to cannibalism, as a result of which only the strongest individuals are selected from the cocoon.

During the spring and summer they grow, living during this time several molts: males - seven times, females - nine.

Our help! The body of spiders is protected by an exoskeleton, a peculiar shell of chitin, which prevents the spider from developing further. Therefore, as he grows, black widows shed him and replace him with a new one — larger in size.

Enemies of karakurt

It turns out that the formidable black widow of karakurt is not omnipotent, and many animals are not only not afraid of her, but are also able to feed on them. Spider animals are natural enemies of spiders. A flock of sheep or a herd of horses is capable of trampling whole hectares of steppe with spiders living there.

Sphaxial wasps act against karakurt in their favorite way: they inject poison under their skin, paralyzing and killing later.

Riders lay their eggs in cocoons with spiders, and then their larvae easily straighten out unprotected spider nymphs.

Finally, the hedgehogs that are not afraid of karakurt bites, being protected by needle armor, also enjoy karakurt.

Having given an idea of ​​a black widow as an animal, we turn to the main part of our narrative, the karakurt bites. Immediately you need to identify two main positions associated with this:

  1. A black widow's bite can be fatal.
  2. Spiders are not the first to attack humans.

To begin with, let's mark the symptoms of the bite of karakurt, which manifest themselves very quickly.

  1. Within 10-15 minutes, it begins to break all the muscles of the body, as is the case with the flu or another cold. The chest, abdominal, lumbar muscles are the most painful.
  2. In addition, heart palpitations become more frequent, shortness of breath appears, dizziness, tremor of the limbs, and even priapism in men.
  3. After this comes the general weakness of the body, it seems that the limbs do not obey the person, vomiting appears.
  4. Further, the nervous exhaustion of the human body occurs and depression can occur.
  5. A person’s consciousness becomes cloudy, and he ceases to be aware of reality and recognize even people close to him.

If an antidote is not administered on time, a person’s physical death may occur.

However, it is not at all necessary that all karakurt bites are deadly to humans. Firstly, people with enhanced immunity are much easier to tolerate a bite than those weakened by diseases, or those who have an increased allergic reaction to poisons. Secondly, the greatest concentration of poison is observed in black widows during the marriage period and after laying eggs, in other seasons bites are less terrible.

Reference! Karakurt males are not able to bite through human skin, so for people and most animals are not dangerous.

Karakurt bite

What to do after a bite

The most effective way after the bite is an immediate cauterization of the wound. This allows you to destroy the poison, not allowing it to spread with blood through the body. The fact is that the female bites through the skin only by half a millimeter, and for some time the poison is concentrated almost on the surface.

It is possible to burn the wound from the bite directly with the head of the match, or, having heated up on the fire any metallic object at hand:

  • blade of knife,
  • cutlery,
  • house key go car
  • metal comb.

Attention! Cauterization should be made in the first 10 (!) Minutes after the bite. After this time, the poison will go for a walk around the body.

Everyone knows what to do next - immediately contact the nearest medical facility where they will provide the required assistance. In regions where a black widow is common, almost always there is a necessary serum, which is designed to neutralize the poison.

In the extreme case, when the necessary means is not, it turned out, an intravenous injection of ordinary potassium permanganate in a concentration of 2–4 percent or magnesia sulphate can ease the fate of the patient - 10–15 percent.

After medical procedures, the patient should be given plenty of drink to remove the poison from the body and a hot bath to reduce pain. It is also a good idea to take painkillers and sleeping pills, for a healthy sleep brings great benefit to the body that is weakened by the bite.

Karakurt bites of animals

Different animals react to black widow bites ambiguously. Horses and camels suffer the most from it, including death, which in some regions is a real scourge for agriculture. Also, many rodents are dying from poison of karakurt.

At the same time, dogs, hedgehogs, amphibians and reptiles are practically insensitive to karakurt poison.

Now it's time to watch a video about a black widow. See a report from America, filmed by our former compatriot.

What does karakurt look like?

Karakurt looks like a medium-sized spider. Karakurt females significantly exceed males in size. The karakurt female grows up to 2 cm, while the karakurt male is only 0.7 cm in size.

Karakurt looks quite unusual. The karakurt spider has a black body, and on the abdomen it has red or orange spots of various shapes. Both male and female karakurt have such coloring. Sometimes there may be a white stroke around the spots. Often, reaching maturity, the spider karakurt can become completely black without spots.

Where does karakurt live?

Каракурт обитает в Средней Азии, Киргизии, Казахстане, на территории Ирана и Афганистана, по берегам Средиземного моря, в Северной Африке, на юге Европе и Украины. В России каракурт обитает в южных районах. Особенно паук каракурт распространен в Астраханской области, Краснодарском крае и Крыму.

В особо жаркие периоды этот паук может совершать миграции в северные районы, но в таких районах каракурт обитает только до наступления зимы. The most favorable habitat conditions for karakurt are those areas where there is a hot summer and a warm autumn. Karakurt lives in desert and steppe zones, in wastelands, salt marshes, ravine slopes and abandoned buildings.

Karakurt Cubs

The karakurt spider is called the black widow, as the karakurt female kills her spouse after mating. But the black widow of karakurt will hardly survive the eaten spouse, because with the onset of cold weather the female dies.

Capable of breeding karakurt become early summer and begin to migrate in search of partners. With the onset of heat (July-August), the karakurt males and females arrange temporary nets for mating. After that, the Karakurt female is looking for a secluded place to build a den where she can place cocoons with eggs.

Such a place often becomes various indentations in the soil, abandoned burrows of rodents, as well as drains of ventilation systems. At the entrance to the lair, she stretches a randomly interwoven web. A female karakurt hangs 2-4 cocoons in a lair where they survive the winter.

In April, the karakurt pups will leave their cocoons. With the onset of summer, ripe karakurt cubs will go in search of partners. Despite the fact that the spider karakurt is very prolific and has a very strong poison, it still has enemies in nature. Enemies spider karakurt are hedgehogs, wasps and riders. Also often comes the destruction of laying karakurt eggs by flocks of sheep and pigs, which simply trample them.

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Poison karakurt

The poisonous glands, located in the cephalothorax, are connected by thin ducts with mobile sharp claws of the maxilla. The glands are shrouded in muscle coat. Due to the dramatic reduction of these muscles, the victim receives a portion of the poison instantly.

According to the biochemical structure, karakurt poison belongs to toxalbumin, spreads through the lymphatic pathways, is neurotoxic and contains six bioactive fractions. The sensitivity of warm-blooded to karakurt poison is not the same.

Karakurt bite is very dangerous for horses and camels dying right on the pastures. Sheep, goats and pigs are not sensitive to this poison and can eat adult karakurt without any consequences. Karakurt poison is 15 times more toxic than rattlesnake venom.

People (especially the inhabitants of the steppes) are well aware of the danger of karakurt. To reduce the likelihood of contact with him in the habitat, shepherds have long since expelled, chased and herded flocks of sheep that are not sensitive to karakurt poison, and also practiced seasonal burning of the steppe so that young spiders would die in cocoons.

The spread of karakurt

Hot countries - Central Asia, Ukraine, the Caucasus. The density of its settlement largely depends on the regional weather conditions of the past year, wintering conditions, the number of natural enemies.

Habitats of spiders are diverse: mouse minks, cracked mud walls, wormwood steppes, salt marshes of wasteland - both on virgin soil and on arable lands. They even live in inhabited courtyards.

In deserts, as well as very wet places, karakurt do not live in dense grasses and bushes.

What kind of life is karakurt?

Most often, karakurt arranges a nest at the base of grass stalks or directly on the ground, where weaving spherical cocoons for eggs and has a trapping net nearby. Trapping nets and cocoons are made of a very strong, tightly stretched web with a stretch ratio of up to 30%.

Cocoons karakurt builds in July - August. After 5-7 days spiders appear in the cocoon, but they come out only next year at an air temperature of 30 ° (15-20 ° degrees in the shade).

In relation to a person, karakurt is not aggressive, when they meet, they leave or pretend to be dead. The spider may bite at the moment when the net snares are disturbed, or it is pressed against the human body. This most often occurs when spending the night in natural conditions, much less often during the day when gathering wild flowers, hay or straw, lying on the ground.

The toxicity of the poison of karakurt depends on many factors: the season, age and sex of the spider. Mature females are especially poisonous in comparison with the young, in which the red dots on the black abdomen are surrounded by a white border.

When and how bites karakurt

The first bites of karakurt occur in May - early June. However, in 2007, on March 5, a report appeared in the press about the first and only case of a winter spider bite. Usually in winter, spiders sleep, but a warm winter, according to experts, has violated their biological clock. The most frequent and dangerous karakurt bites are observed in July and August. From September to the end of October, when the temperature drops, karakurt dies massively.

All adults die, only spiders spend the winter in cocoons, from which they leave in summer. In recent years, there has been a shift of karakurt to a zone of relatively dense human habitation. These are sheds, abandoned courtyards, firewood, rural latrines (there are cases of a bite on the buttocks). The penetration of karakurt into housing is possible during prolonged torrential rains flooding the spider's habitat.

Natural enemies of the species are spacky wasps paralyzing karakurt with a poisonous sting, as well as insects of the “horsemen” group laying their eggs into a cocoon of karakurt and turning the whole laying of karakurt into food for ripening their offspring. For these insects karakurt is a good prey.

Clinic of defeat.

To diagnose karakurt bite is extremely difficult. The fact is that a person does not feel pain. The location of the lesion is determined by two small red spots, more insignificant than hyperemia, edema, and numbness.

General symptoms develop after trauma - from 15 minutes to 6 hours. The shorter the time interval between the bite and the development of common symptoms, the more severe the intoxication when the burning pain from the bite spreads throughout the body.

The patient is very restless, he has a fear of death. Then the pains pass to the muscles of the body (abdomen and chest). Breathing difficult. In severe poisoning, breathing disorder can result in pulmonary edema and cardiac arrest.

Muscle tension, fascicular muscle twitching join pain. The muscles of the face with a grimace of pain and fear are involved in the process of intoxication, blepharoconjunctivitis and tearing are observed.

Symptoms of poisoning poison karakurt last an average of 24-48 hours, and sometimes much longer. Poisoning in severe cases after 1-2 days can lead to death. Death from the bite of karakurt is most likely in persons (children and adults) with severe comorbidities or in those who are late in the hospital.

The number of deaths ranges from 4 to 6% of the total number of bites.

Recovery occurs gradually - after two or three weeks. It depends on the amount of poison that has entered the body. Neurological effects (asthenia, weakness) can last from one to two months.

Upon admission to the hospital there is a large number of diagnostic errors. Pain in various parts of the body is so pronounced that doctors mistakenly categorize it as an acute abdomen or myocardial infarction. This, of course, is reflected in the outcome of the poisoning.

How to protect yourself from the bite of karakurt

The most reliable protection from the deadly poison of karakurt is not to do anything stupid while enjoying the outdoors. To prevent contact with Karakurt, you must follow certain rules:

1. Under the parking lot, you should choose areas that are unsuitable for the life of karakurt (the absence of a large number of rodent holes, cobwebs in the grooves of the soil and vegetation).

2. No need to walk barefoot in places where karakurt can live, and not only them.

3. You can not sleep in the steppe on bare ground, you must use a tarp or air mattresses, which are reliable protection from spider bites at night.

4. When collecting hay, straw, firewood, clearing forest belts and wastelands, it is recommended to use gloves and protective clothing, to fill pants with socks and boots.

5. Do not turn the stones and move by touch at night on the rocky slopes.

6. Tents are not recommended to be left open for the whole day. Before going to bed or sleeping bag, they must be thoroughly shaken up. Do not forget about shoes!

7. Most of the bites are provoked by the victims themselves. Summer residents and homeowners do not fight well with wild grasses on the territory of households and adjacent areas, therefore karakurt and tarantulas often develop gardens. Some take off their shoes in the evening and leave them between the rows. Spiders take the left shoes for the desired mink - and the morning can be fatal.

Treatment if a black widow bit

When karakurt bite, you must immediately, not later than 2-3 minutes, burn the bite with the head of the match (put the head of an unlit match to the bite and burn it with another match).

The poison of karakurt penetrates the skin to a depth of 0.5 mm and disintegrates when heated. Other methods for destroying poison are injecting a wound of 3-5 ml of a 0.1% aqueous solution of potassium permanganate into the wound site and adding lotions to it at the bite site.

For treatment, you must enter intravenously 1-2 doses of serum diluted in 1000 ml of saline. Specific anticancer serum is produced at the Tashkent Institute of Vaccines and Serums. One dose of this serum costs 37,000 rubles. This is a huge amount for district hospitals.

Wherever a karakurt bite is received, the victim must be immediately transported to the hospital. With severe intoxication, it is recommended to drink plenty of fluids, with chills, shaking, feeling cold and muscle tension - warming the limbs. In place of the bite impose a cold compress, apply salicylates and any pain medication.

Habitats

Spider prefers warm steppe, semi-steppe, forest-steppe zones of Southern Europe, Central Asia (Iran, Afghanistan), North Africa, southern Russia, Kyrgyzstan, Azerbaijan, and Kazakhstan, it is found in the Donetsk region and in the Crimea. Common habitat zones are Altai, Krasnodar Territories, Novosibirsk, Astrakhan, and Rostov Regions.

In the hot years, karakurt was observed at the latitude of the Moscow region during the migration process. But usually the Black widow does not survive the harsh climatic conditions, and such cases are rare. For habitat spider karakurt chooses the steppe, arable land, the area near the ravines, wastelands, salt marshes.

He avoids the open area, thick grass, wet ravines, hot desert. Irregular stony surfaces similar to the environment of the ferrets and lemmings are acceptable. Sometimes karakurt is found on abandoned construction sites, but the modern courtyard is no exception. Spiders karakurt die with the onset of frost in the fall.

What kind of life is karakurt?

Most often, karakurt arranges a nest at the base of grass stalks or directly on the ground, where weaving spherical cocoons for eggs and has a trapping net nearby. Trapping nets and cocoons are made of a very strong, tightly stretched web with a stretch ratio of up to 30%.

Cocoons karakurt builds in July - August. After 5-7 days spiders appear in the cocoon, but they come out only next year at an air temperature of 30 ° (15-20 ° degrees in the shade).

In relation to a person, karakurt is not aggressive, when they meet, they leave or pretend to be dead. The spider may bite at the moment when the net snares are disturbed, or it is pressed against the human body. This most often occurs when spending the night in natural conditions, much less often during the day when gathering wild flowers, hay or straw, lying on the ground.

The toxicity of the poison of karakurt depends on many factors: the season, age and sex of the spider. Mature females are especially poisonous in comparison with the young, in which the red dots on the black abdomen are surrounded by a white border.

Spider activity

Its peak is recorded from July to September. During the migration of females (June / July), the number of people and animals affected by their “kisses” increases dramatically.

Outbreaks of mass breeding of karakurt are recorded once in 25 or once in 10 years, while adult females conceal the main danger.

Our karakurt, of course, does not compare with the real black widow in terms of the strength of the poison, but his bites sometimes end in death. Thus, in October 1997, 87 residents of the Kherson region bit karakurt: they were all treated in the in-patient department, but they did not manage to save one. Then zoologists have suggested that a massive attack was triggered by downpours, which drove the spiders from the shelters.

Along the way, it turned out that in the post-war years, Karakurt felt itself the master of the Don steppes and disappeared for a long time due to their active development.

The revival of the population of black widows began with the collapse of the USSR: they are vigorously breeding in abandoned fields and farms. Second favorable factor - global climate change, in which the arid zone moves to the north. It is in the hands of spiders, avoiding heavy rainfall, disastrous for their holes.

This spider eats insects caught by its networks. Arthropods living nearby with a black widow are victims: grasshoppers, beetles, flies, gadflies, locusts, cicadas and other invertebrates.

These insects are caught more often in horizontal nets. The weaving of the web is not similar to the round trapezoid pattern, but more looks like a random chaotic pattern. The victim is paralyzed by a spider with poison, after which it extracts liquid components from it.

Spider bite

Spider venom glands are located in the cephalothorax. Thin ducts connect them with movable claws of the upper jaws. The glands have a special muscle membrane. When attacking karakurt, these muscles contract sharply, and through the ducts the venom is instantly injected into the victim's body. The male karakurt, which has a much less impressive size, is not able to bite through the skin of a person.

So, adult females bite, the first never attack. Therefore, you should carefully follow where you are stepping on and not raking up the holes covered with cobwebs. Spiders are especially active in the period from July to September, but due to the onset of an earlier summer, this period shifts to June.

The spider bite itself is not so painful, the main pain appears after 10-15 minutes. In place of the bite remains a small red spot, which quickly disappears.

Acute pain after a bite quickly passes, but after a while (from 15 minutes to 6 hours) very intense pains begin in the entire bitten limb, which further engages the muscles of the body, the chest (marked difficulty breathing!), A sharp pain spreads to the abdomen , waist, chest. The pain is so severe that doctors mistaken for a “sharp stomach” or myocardial infarction. A person experiences a strong mental excitement and fear. Often there is dizziness, headache, asphyxiation, cramps, vomiting. Pulse slows down, its rhythm is broken. The sick person feels lethargy, anxiety, severe pain deprives him of sleep. To the pain joins pronounced muscle tension.

After three to five days, a characteristic rash appears on the skin, and the condition improves. Recovery occurs within two to three weeks, but the general weakness usually remains for more than a month.

Treatment and Prevention

The most elementary and known since ancient times method of treating a poisonous spider bite, supported by official medicine, is cauterization. The predator's venom is sensitive to heat and decomposes when heated, losing toxic properties. Therefore, immediately, within 2 minutes after the attack, the damaged area must be burned with a cigarette, a match or some other method. The spider does not have powerful jaws, the bite depth does not exceed 0.5 mm, so immediate cauterization gives a strong effect. In any case, as soon as possible you should contact the medical institution.

As a special measure used anticancer serum, which is administered intramuscularly. Serum relieves the main symptoms of poisoning, recovery time is reduced to 3-4 days. The disadvantage of funds is its high cost.

In the absence of a special substance, intravenously administered:

  • novocaine,
  • calcium chloride,
  • magnesium hydrosulphate.
  • 33% ethyl alcohol,
  • 2-3% solution of potassium permanganate.

The victim must be given water, rubbed with alcohol, enemas are recommended. As anesthetics, you can use universal remedies: Analgin, Dimedrol, Ketanol.

In cases of living on the territory of habitat of karakurt it is necessary to be careful when cleaning residential premises, especially in mud houses, pay attention to the presence of cobwebs in the backyards.

When going on nature should follow certain rules:

  • Do not camp out in the habitats of poisonous spiders,
  • do not touch the inside of the tents,
  • examine the place of overnight stay or rest, paying attention to the pits and natural depressions in the ground, rodent minks, and if there are, fill them with earth,
  • use closure clothes, wear a hat,
  • периодически, и в обязательном порядке перед сном, тщательно обследовать палатку, спальные места, одежду, обувь и другое имущество,
  • использовать полог, подворачивая его под спальное место,
  • обкопать палатку, сделав неглубокую канавку,
  • не снимать обувь,
  • при обнаружении каракурта не дотрагиваться до него, если паук оказался на одежде – стряхнуть или сбить щелчком.

Для профилактики падежа домашних животных проводят обработку почвы гексахлораном и другими ядами.

Паук черная вдова как бизнес

On the Internet walking rumors about low-cost and fabulously profitable business - breeding karakurt to get poison. Wishing to explain "on the fingers," looks like milking poisonous arthropods, saying that this is a simple and safe process that you can master yourself.

In fact, specially trained people are engaged in the extraction of poison, in industrial conditions and on expensive equipment. To do this, they purchase special gas (for putting karakurt to sleep) and the installation of an “operating table” with electrodes necessary to supply a discharge to chelicera in order for poison to be removed. The most expensive part of the scheme (several tens of thousands of dollars) - unit for drying poison, which should turn into crystals.

500 karakurt from one milking yield 1 g of dry toxin, which on the black market costs up to 1,200 euros. Undoubtedly, a profitable business, but it is not for self-taught, loners and amateurs.

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