The value of insects in the nature and life of a person. Straight. Streamed widespread all over the globe from the tropics to the Polar region and are distinguished by a large variety of morphological structures. The meaning of the rectal in human life and nature

"Insect value in nature and human life"

1. Abstract insects

Insects are the most numerous class of animals of their known more than a million species. The calculations made by scientists showed that about 1017 (100,000,000,000,000) insect copies simultaneously live on Earth. Thanks to its abundance, insects play a very important role in nature and in the life of people.

In addition to studied insect detachments in nature, the most common beetles, or tough, having rigid front wings. By the nature of the power, there are three main groups among them. First, it is predators that feed on various small animals, mostly insects.

Such, for example, brightly painted ladybugs. Some of God's feeds are born in laboratories and produce in greenhouses and gardens to combat troubles damaging agricultural plants. Secondly, these are consumers of decomposing plant and animal residues. These include, for example, dead and graveders using animal corpses as food. Their larvae feeds the same food. They are among the sanitation of nature: without them the corpses of animals would decide and infected the surrounding area. Thirdly, these are vegetative beetles that consume all sorts of plants, including wood. This includes, for example, the May Beetle and other Khrushchi, sheets. Listoyed Colorad Beetle in the mass settles on potatoes, often combining all the tops on the bushes. It is delivered to Europe and our country from North America. More than 300,000 types of beetles are known on Earth.

2. Insect insects in nature

1. Many insects are closely related to the life of plants. Bumblebees, bees and flies pollinated flowering plants.

2. Right link in power circuits.

3. The army of these arthropods is powered by leaves, roots, stems and other organs and parts of plants, fruits and seeds, limit their growth and development.

4.What-forming role insects.

5. Office by other insects, limit their number.

6.Biological suppression of insects - pests.

7. Supports for other animals: refilling on plant food, they themselves turn out to be the extraction of other animals.

8. Estetical meaning: beautiful forms cause feelings of joy and admiration.

9.Nighting corpses and manure, perform a sanitary role.

Insects make up about 80% of all animals on Earth, according to different estimates in modern fauna from 2 to 10 million insect species, from them just over 1 million. Actively participating in the cycle of substances, insects play a global planetary role in nature.

More than 80% of plants are pollinated by insects, and it is safe to say that the flower is the result of the joint evolution of plants and insects. Fixtures of flowering plants to attract insects are diverse: pollen, nectar, essential oils, Fragrance, Flower shape and painting. Insect devices: sucking trumps of butterflies, rodent-linguring trumps of bee; Special dustholders - in bees and bumblebees brush and basket on rear legs, Bee-Meghahil is an abdominal brush, numerous hairs on the legs and body.

Insects are a huge role in the soil formation. Such participation is associated not only with soil breaking and enriching it with humus insect insects and their larvae, but also with the decomposition of plant and animal residues - the pods of plants, corpses and excrement of animals, at the same time a sanitary role is carried out and the cycle of substances in nature.

The following types of insects perform a sanitary role:

· Coprophages - beetles-navigator, muffins, cowmen;

· Necrophages - fuel beetles, graveters, leisure meals, meat-headed, Padalants;

· Insects - Destroyers of dead plant residues: wood, branches, leaves, needles - beetles-drillrs, larvae of usachi, rags, rhohvostov, mosquitoes, wholled ants, mushroom mosquitoes, etc.;

· Insects - sanitation reservoirs are powered by weighted or at the bottom with rotting organic substances (daddy) - larvae of mosquito dergunov, or bells, datsok, streams, purify water and serve as a bioindicator of its sanitary condition.

3.To-forming the role of insects

In the process of its livelihood, insects enrich the soil with organic and minerals. Drawing in the soil the larvae of beetles, butterflies and flies take part in the moay of the soil and in the mixing of its layers.

In the soil lives a significant amount of insects (beetles, ants, etc.), which have a significant impact on the soil formation process. Doing numerous moves in the soil, they break the soil and improve its physical and water properties. Insects, actively participating in the processing of plant residues, enrich the soil humus and minerals.

4. Plant peppers

Many flowering plants without pollination insects cannot exist.

The most important in the formation of the evolution of entomophilic plants had a wide variety of refamps, in particular the bees. Bees and retained their leading role in the implementation of cross-pollination of the plant cultivated by man.

Not all insects visiting flowers for the sake of nectar are useful for cross-pollination. Insects such as beetles, bugs, tribes and others, although they are taking as nectar, but bring more harm to plants than benefits.

A very minor role in pollination of flowers is played by butterflies, and from the refigured, short-circuit wasps, glistening, nuts, riders and sawers. Among the wild representatives of entomophaws, essential importance, as pollinators have bumblebees, single bees, separate species of real OS and flower flies. What is each of specified groups It is of interest to pollinate the plants of certain species. For example, that long-penetrating bumblebees are more successful than other insects, pollinating red clover flowers. Separate representatives of single bees are well adapted to the opening of flowers and pollination of alfalfa. Flower flies most successfully pollinated carrot seeds. However, the number of wild insects changes sharply in different years, not to mention the fact that due to the uninstall of the interspace, empty lands and the mass introduction of chemical measures to combat pests and plant diseases, the number of wild pollinators is sharply reduced. Currently, especially in the areas of intensive farming, their role as pollinators is reduced to almost zero.

The main role in pollination of agricultural entomophilic crops belongs to honey bees, the structure and lifestyle of which in the process of evolution is best adapted to perform this function. They live big families whose number during the flowering of the most important honeycomb reaches several tens of thousands.

Each bee family throughout the year spends on its nutrition and breeding a breakage of about 200 kg of honey and about 20-25kg plants pollen. To assemble such a number of honey, each family bees should visit over 500 million flowers, each of which contains 0.5 mg of nectar. Almost the same number of visits to flowers is required to collect pollen. Thus, a strong bee family for the season visits over a billion flowers - this is the real volume of pollinating work of every strong family during the year. No other type of insects can compare with a honey bee in terms of the volume of pollinating work. But it is not only in quantitative indicators. It is very important that honey bees winters large families. In the spring, when the number of wild insects - pollinators are very small (in a bumblebee family, for example, only a female-uterus remains), and the bee family can be directed to the collection of nectar and pollen with a 10 thousandth army of flight bees, the number of which as the number increases flowering plants Rates every day.

While many types of single bees belong to the insect monotrophic (visiting plant flowers of only one kind or type) or oligotrophic (visits the flowers of a number of species of one family), a honey bee, as a polybofan insect, collects nectar to pollen from all entomophilic plants available to it, belonging to different families, birth and species. At the same time, working bees quickly switch to a visit to the entire arrays of plants of certain species during their mass flowering, that is, at the time of the greatest need for pollinators. To load the honey intake, for one departure of the bee should be visited depending on the nectariodotivity of plants of 80-150 flowers. The same number of flowers of the bee should visit to collect pollen and the formation of communal. In two ranks, the bee weighing about 15-20 mg contains over 3 million pollen grains. Thousands of different-quality pollen grains are pushed to the body of the bee covered with the hairproof, with repeated visits to flowers, which are transferred on the pestlery. Moreover, each flower is visited by bees during his life is usually not alone, but many times. Thus provided best conditions for selective pollination and fertilization. That is why in the conditions of modern intensive agriculture, only the correct organization of pollination of entomophilic crops by bees is the necessary element of the agrotechnical complex for obtaining high yields, improve product quality and reduce its cost.

5. Insect insects in man's life

In human life and economic activity, they have both positive and negative meaning.

Of the more than 1 million insect species, real pests with which you need to deal with about 1%. The bulk of insects is indifferent for a person or benefit. Domesticated insects - honey bee and silkwormBeekeeping and silk farming are based on their breeding. Honey bee gives honey, wax, propolis (bee glue), apilac (bee poison), uterine milk; The taled silkworm is a silk thread highlighted by the stranded glands of the caterpillar during the construction of the cocoon, the silk thread is continuous, up to 1000 m. In addition to these insects, valuable products give: the caterpillars of the oak cocooner, their smaller silk thread goes to the manufacture of Blassy fabric; Varnish workers are separated by shellac - a wax-like substance with insulating properties used in radio and electrical engineering; Carmine Chervetsy (Mexican and Ararat Koshenyli) give red paint carmine; Beetles-unforgettable, cantaridine caustic substance, used for the manufacture of disruptive plastering.

Insect pollinators, representatives of many detachments, among which an important place is involved in the refamps, increase the crops of seeds, berries, fruits, colors of many cultivated plants - fruit and berry, vegetable, feed, floral.

The fruit flock of the Drozophile, due to its fertility and reproduction rate, is not only a classic object of research of genetics, but also one of the ideal experimental animals for biological research in space. Fossil insects are used in stratigraphy to determine the age of sedimentary rocks.

6.Names, damage to man

Of the huge number of insect species described (about 1,000,000), only a minor part, about 1%, directly or indirectly causes harm to man.

The aesthetic value of insects is that many beautiful butterflies, beetles, dragonflies, bumblebees and others cause feelings of joy and admiration.

Insect pests - (Insect Pest), insects that can cause death or cause harm to man, his pets, food reserves or other products of plant origin. The term is also applied to many insects that more annoying people than a serious threat. Insect pests, causing serious harm to human health, are of particular importance in countries with a warm climate and in the tropics, of which the most dangerous mosquitoes. They transfer pathogens various shapes Malaria, yellow fever and other dangerous diseases. Fleas pass the man from rat bubonic plague. Among the insects, harmful pets, you can call the flies of Tsetz, the hedge, Pukhedov, Gigalok and Lishes. Each type of plants used by the person has its own pest insects who eat either all the entire plant or part of it. Roots feed Khrushchi, wires (shortcuts of shortcuts) and other insects. Among the insect pests that feed on the above-ground parts of the plants, the greatest value They have tweces, shields and locust, but significant harm caused many caterpillars.

An example of insects, annoying a person, can be biting in the summer mosquitoes, midges and stinging wasps. Home insect pests are cockroaches, scales, wrapping moles and bed bugs; None of them is dangerous mortally, but it is believed that almost all of them can threaten human health.

7. Folee insects

Semitic cow (Coccinella septempunc-tata L.). Little black beetle, 6-- 8 mm long, with red hollows, on which 7 black caffeve specks are clearly charged, so that the insect and got their name. Beetles fly well, with amazing accuracy find colonies tool, whom they eaten with greed. Immediately on the leaves or branches of females, a handful of yellow shiny eggs are laying. Of these, small black six-legged larvae are published, which immediately begin to eat tool, like adults. Where the cows settled, the TLL is completely destroyed. Such a picture can often be observed in the gardens, on berries and fruit nurseries. Winter beetles in the builds of buildings, under fallen leaves, in bitch grass and other places. Early in the spring, after overpowing, they are pulled out of their shelters, they crawl on trees and begin to eat pests. IN favorable years Cows (they are also called ladybugs) quickly multiply and eat not only tool, but also other small pests. In search of food and water, they accumulate in the mass near the reservoirs, on the coast of the seas, on the rocks, are crawling along the roads, where a large number of them dies under the legs of passersby. At such a time, the cows should be saved from death, collect in special drawers from a thick grid and store in refrigerators or in cellars in cold places so that in the spring to release them on plants damaged by the waves.

Two-point cow (Adalia Bipunctata L.). Long bugs 3--4 mm, with red hollows, on which there are 2 black round spots. Lives and feeds the same as the semitamic cow.

The SIRF is bandaged (Syrphus Ribesii LK dug-out insect, black with bright yellow dressing on the trouser. In appearance, it resembles an axis than a fly. The length of the body is 11 --12 mm. The female finds the colony of tool and puts the eggs to the leaves damaged by them. The eggs come out yellowish or greenish-legged larvae, similar to a tiny leech. The larvae is very voracious: each to eats up to 2000 aphids during his life.

Chrvsopa Perla L.). Gentle bluish-green slender insect with four transparent wings, golden eyes and long mustache. Body length 12--15, wings span 25--30 mm. Shelves the oblong emerald eggs on the leaves and stalks of plants damaged by the troubles. From eggs in a few days, grayish six-legged larvae go. They quickly run and their long sharp jaws are enough tool, suck them, leaving only skins that are absorbed on the backs of larvae. From the skins of a toy larvae gold-profiles make themselves cocoons before pokulation. Adult gold-profiles in the premises. With the impending danger, the zlatprace allocates a persistent unpleasant smell that scares enemies.

Ktyar (Selidopogon Diadema F.). Predatory double insect similar to the fly. Black male, with brownish transparent wings; The female buoy, with a yellowish-brown pattern on the chest and the trouser, gray wings with a yellow base. Body length 18--22 mm. It feeds on insects, piercing them with a solid trunk and sucking lymph. Often cat pests on the fly. It occurs on the leaves and on the soil in the gardens, in the fields and gardens, where it is podkraulizes prey. The larvae also feed on insects living in the soil.

Dragonfly (Leptetrum Quadrimaculatum L.). The predatory insect, with large complex eyes, occupying most of the surface of the head, a strong ricking oral apparatus and two pairs of transparent long narrow wings with a thick network of residents. Wings in dragonfly are always located perpendicular to the body. Very quickly fly, on the fly, catching a lot of small insects, especially mosquitoes, moshkes, moles and other pests, than bringing great benefits to a person. The larvae live in ponds, rivers and feed on small water animals. In the USSR there are about 200 types of dragonflies.

8. Inkomic pests field and garden

Insects pests of fields and garden - this is a rather serious problem. Currently there is a huge amount different species Insects - pests who are willing to destroy our harvest. They damage both young landings and adult plants. In order to protect your crop from pests, they need to know.

9. Vida insect pests

Insects are a numerous class, which includes more than a million different species:

Straight

Raw

Butterfly

Refreadmill

Two.

Insects divided into groups damaging different parts of the plants:

Pests damaging the root system of plants

Pests of shoots and seedlings

Pests of the aboveground

Pests of foliage and shoots.

Most great harm Groceries and fields are applied mass reproduction of pests insects - locusts, tli, butterflies, beetles. Especially harmful locust, it is the most voracious. The offspring of one female for his life can eat 300 kg of plants! The locust forms a flock of up to ten billion individuals, 120 km long. Such a flock can fly without stopping 2000 km!

10. Signing the most common pests

streamed insects plant

Underground parts of plants - tubers, bulbs, roots and rhizomes - are damaged by bear, larvae of the May beetles, grasshoppers, some species of flies, caterpillars of certain types of butterflies.

Proportions and seeds of plants suffer from the invasion of voracious bedbugs, beetles, weevils, larvae of beetles and butterflies.

Ground parts of plants are damaged by colorado beetles, beet glands, grasshopper beetles.

A colorado beetle is especially dangerous for potatoes. Over the summer, two or three generations of beetles grows. And beetles and larvae feed on the leaves of potatoes. Adult beetle and his larvae per season can destroy 100 thousand potatoes!

Beckls are the greatest harm causes a beet-haired weevil. From delayed females of eggs develops a drawing larvae that feed on the roots of beets.

Beetles-clutches are harmful to many plants. The larvae oglkunov zhukov is called wires. They are almost omnivorous, affect potatoes, carrots, beets, dykon, radishes, root parsley. Also harm the messengers, watermelons, melons, pumpkins and zucchinas.

Great damage to fields and vegetable oils and winter scoops. White caterpillars feed on the cabbage family plants. The caterpillars of the winter scoop destroy the seeds and the appeared sprouts.

They harm wild and garden plants and some flies. Summeys onions and garlic are striking onions and garlic. They laid eggs to land near these plants. The appeared larvae crawl into the bulbs, in the leaves, they emit numerous moves. Soon the plants shipy and dried.

Cabs and carrot muffins bring tremendous harm to radish, celery, root parsley, carrots, cabbage family plants.

Ripe wheat fruits, rye and barley suffer from the invasion of bread beetle-kuzki. Adult beetles eat grains. One beetle destroys 9-10 sections.

Bibliography

1. Biology: animals: studies. for 7 cl. environments shk. / B. E. Bykhovsky, E. V. Kozlova, A. S. Montchadsky et al.; Under. ed. M. A. Kozlov. - 23rd ed. - M.: Education, 2003. - 256 p.: Il.

2.. Insects in Nature, Vorontithspa., Leningrad, "Neva", 1988.

3. Insect life, Fabrzh.A., Moscow, Terra, 1993.

4. The determinant of insects, N.N. Plavilovikov, 1994.

5. Insect morals, Fabre J.A., 1993.

6. Secrets of the world of insects, Grebennikov V., 1990

7. Posted on the site

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Distinguish dolls: free (open), the appendages of which are not saved with the body; covered, clothed with a cuticular case with a terrain of not separated from the body of appendages; Hidden (or Punaria), which under the late and taking the shape of a barrel of the larvae of the larger of last age hide a typical free K. In some insects with incomplete transformation (Chervests - males, whiteflies, trips) The need for radical transformations of the Nymph organization to the organization of the IMAO leads to the development of resting phases Comparable with a doll.

Types of larvae:

1. Commodic larva - a well developed head and intractable legs, a solid thoracic department, roded by the oral apparatus.

2. Mocricular larva - small legs, beetles from the family of leafy

3. Catering larvae:
a) Real Caterpillars - Abdominal Feet 2-5 Couples - Butterflies
b) false caterpillars - abdominal legs 6-8 pairs - sawers

4. Drawing larvae:
a) larvae with head and chest legs - Khrushchi
b) larvae with head, but without breasts - Coroes

c) larva without breast legs and without heads

39. Insects-pests of animal husbandry

insects that can cause death or harm man, his pet

Malari Komar.
Slept is the bloodstream insect. Homemade Fly - Carrier Diesentery, Cholera.
Bloch: human, cat, dog. Carriers of pathogens of plague.
Waters: skin, gastric, nasochloric.

Among the insects, harmful pets, you can call the flies of Tsetz, the hedge, Pukhedov, Gigalok and Lishes.

40. Characteristics of the detachment of reference. Biology of a honey bee.

Honey bee, wild bees, bumblebees, ants, riders, sawmakers, wheezes - these are aused-panel, having in adulthood two pairs of webbed wings (hence the name of their detachment). There are also cool insectsincluded in this squad, such as workers ants. Refreadmill One of the largest and most developed insect detachments in the evolutionary plan. The group includes more than 155 thousand species from 9100 genera (probably up to 300,000 species), including public insects (ants, wasps, bees, bumblebees). The distinguishing features of this detachment include: from two pairs of refigble wings rear less than the front, wings with a rare network of residents, rarely without alkali (there are cool shapes), on the front edge of the rear wing there are a number of hook-like hooks included in the corresponding fold in the rear The edge of the front wing, rodes and liding or only rodent oral organs and complete transformation

The bee is on top of the pyramid of all living on our planet insects.
The bee has a large, covered hairs, head, on the sides of which are two complex eyes, and between them - three simple eyes. Long curved mustache deposit from the front - the touch bodies. The lower jaws and the long underlying bee licks and sucks nectar, the oral bee organs is called rodent-literal.
On the bottom of the abdomen there are smooth, without hairs, plots - the mirror. Wax is highlighted on their surface. Bees are built from the wax of the honeycomb.
On the outdoor side of the feet of the working bees noticeably one deepening, surrounded by long hairs, it is a basket. There are also brushes - wide segments of the same legs with solid bristles. With their help, the bees are collecting pollen flowers of plants and placed in cells. Pollen, impregnated with honey (Perga) - stock of protein feed.
At the end, the abdomen of the bee is a serrated plug. When the bee is sacrificed, the poison flows in his groove in his river. At the same time, the bee itself dies, as it cannot pull out the sting from his skin and takes it off with part of the internal organs.
Everyone watched, as on a summer sunny day, the bees are circling over the colors from which the sweet droplets of nectar collect. To work out 100 g honey, the bee should visit about a million (100,000,000) colors. She collects the nectar from the flower, which falls into the sizing goiter and is mixed with the separation of the granny glands. The bee flies into his hive with a rider and its speed is 30 km / h, and the "emptore" is 65 km / h, for the collection of 1 kg of honey of the bee you need to bring 12000-150000 Nos nectar.

41. The characteristic of the squad is straight. Value.

To straightly attributable insects with an elongated body, ricking oral organs and the characteristic structure of the chest, aircraft and rear limbs. They have a head with large, usually oval, sophisticated eyes and mostly 3 eyes; The mustache on it can be long, exceeding the length of the body (grasshoppers, cricket), or short - shorter than half of the body (tripers, locust). On this difference in the structure of the mustache, it is based on the division of straight bumps into two subjournal - long and short-lived. The structure of the breast of strawberry is specifically developed: it is strongly developed and mobile forwarding, and the lateral parts of the conntion are fused down, forming wide blades that cover the passage from the sides. The remaining two breasts are tightly merged with each other. The wings are mostly developed normally, although there are shapes with shortened wings and even completely uncalled. The front pair wings are more dense and narrow and represent the pulp. Rear wings, or just wings, wide, webbed with well-developed longitudinal housing. When planting an insect, they are fanlikely and covered with hollows. Top legs of jaming type with thickened and elongated hips and long legs. Therefore, straight bumps are sometimes called skimming insects (Saltatoria). Abdomen 10-to-nicke, elongated, with churches; It seems to be reduced below 8- or 9-c-seal, since one or two sterns turn out to be reduced. Straight can be published and perceived sounds, as they have special sound and hearing aids, the structure of which is different in different suburbs.

Use, bringing Straight (OrthopThra)man, very insignificant; Some types are useful to the extermination of harmful insects, the locust is used in places in food, cockroaches are sometimes used in medicine. On the contrary, they are harmful to them in general. The harm is relatively low due to extermination of stocks, food and damage of certain objects caused by cockroaches, but the harm brought by many Straightagriculture, and partly forestry, colossal; It is enough to indicate numerous types of locusts, as well as on the polar

What is the meaning of rectal in nature and in a person's life, you will learn from this article.

The meaning of the rectal in human life and nature

Straight insects are A detachment detachment with incomplete transformation, which includes locust, crickets and grasshoppers. They are insects with incomplete transformation. This means that larvae emerging from eggs have exactly such a kind as adult representatives. Only much less in size. Also, the larvae did not develop wings, and in the rest of the hatched straight flowing - this is an exact copy of their parents. And they eat as well as adult individuals. In the detachment of straight flowing insects there are 20,000 species.

Straights are considered one of the most famous groups of insects. And not at all because each of us knows the grasshopper or cricket. Among their representatives are many of those who we harm agriculture. Since the ancient records are known about the destructive activities of locust, which destroyed large areas of crops, after leaving only bare land.

And today, locusts represents a huge problem for a person. She very quickly breeds. In search of food, large families of these insects fly away from place to place, reminding externally real clouds. In their path, they destroy absolutely all plants to the root.

The most famous enemy for gardeners and gardeners is the Medveda. She has powerful digging legs with which she does moves in the soil to search for food: underground edible parts of plants. This leads to the fact that the upper part of the plant dies. The activity of this insect sometimes has a huge scale. The Medveda may cause irreparable harm to harvest.

1) This is a very large group, which includes over species, of which more than 700 are found in Russia. 2) Restrained are insects with an elongated body, ricking oral organs and the characteristic structure of the chest, aircraft and the hind limbs. 3) The head of them with large, usually oval, sophisticated eyes 4) must be long, exceeding the length of the body or short in short, half of the body. 5) On this difference in the structure of the mustache, the division of straight bumps into two suburbs of long and short-lived. 2. Characteristic features

Features of external I. inner structure: Specifically, the structure of the breast of strawberry: it is strongly developed and mobile opposite. The remaining two breasts are tightly merged with each other. The wings are mostly developed normally, although there are even completely uncalled. The front pair wings are more dense and narrow and represent the pulp. Rear wings, or just wings, wide, webbed with well-developed longitudinal housing. Top legs of jaming type with thickened and elongated hips and long legs. Abdominal 10-segment, elongated. 3. Features of the external and internal structure

According to a variety - straight flowed compete with the most perfect insects, but at the same time preserve the structure of the structure of primitive forms and incomplete transformation. Among them are small (up to 3 mm) and deprived species, as well as blind inhabitants of the caves. 6. Mature Evil Grasshopper

Grasshopper needle devil Such an ominous title This representative of the rejection squad received no accident: all his emerald green body was covered with sharp triangular spikes. Own external species The needle devil makes fear not only on innocuous neighbors by tropical forest, but also visited the predatory insects and birds. Not different large sizes And the length of 6-7 centimeters growing up long, the needle devil may well fight in such serious opponents as birds and minor monkeys. To scare up the aggressor, the grasshopper begins to swing the front limbs, to the very edges with stupid sharp spines. 7. This is interesting! Grasshopper needle devil

Information was taken from sites:

Thanks characteristic traits The buildings they mastered all habitats. Veliko and the value of insects in a person's life. The benefits and harm of these representatives of the animal world will be reviewed in the article.

Characteristic features of insects

The importance in the nature and life of the insects man is due to the features of the external and internal structure, which allow them to be easily adapted to any environmental conditions.

Cuticle, covering the body of the insect, forms an outdoor skeleton. Outside it highlights a leaving substance that prevents excessive moisture loss by the body. Insect muscles are able to shrink with high frequency. This causes a greater flight speed.

For some species, for example, ladybugs are characterized by extortish digestion. Like a spider-shaped, they injected their juices into the body of the victim. Knopes are known, which similarly affect the seeds of cereal plants.

The respiratory system is represented by a toughness, which effectively provides cells with oxygen.

The structure of all organ systems has an important adaptive value.

Features of behavior

The regulation of the functions of the organism of insects is carried out with the help of nervous and humoral systems. Therefore, it is characterized by complex behavior. The importance in the nature and life of the human insects is often due to this reason.

The central part of the nervous system is the brain, is well developed. Especially his front department. This is manifested in the presence of an instinct system - congenital behavior programs. Insects are characterized by hunting, sex, construction and other types of instincts.

The organism occurs with the help of biologically active substances - hormones. They are highlighted by specialized glands in blood. An example of their actions may be regulation of molting processes, the transition to a state of rest, communication with the opposite sex features.

Public insects

Particularly complex behavior have public views. The value of insects in the life of a person is to receive honey, perg and other useful substances. You, of course, guessed that it was about bees. They live in large families in which everyone performs its indispensable role. The prolific queen and males are responsible for the reproductive function. But the workers of the individuals build honeycomb, and in the free time from this occupation, pollen collect. At the same time, they carry it on the pistils, providing conditions for the fertilization of flowering plants. It is thanks to these insects that fruits and seeds appear in many plants. These workers provide a positive value of insects in human and nature life.

Moravian workers

The importance in the nature and life of the human insects can be considered on the example of other creatures - ants. Making yourself housing, they collect a lot of building material. In this case, ants mix the soil, making it more porous and rich organic substances and oxygen.

Large red species eat a large amount of forest pests. However, for humans, their bites can be dangerous. Formic acid, which is allocated during this, can cause itching, irritation of allergic reactions.

Voracious straight bumps

The special importance of the insects in the life of a person also representatives of the squad. These are grasshoppers, medical, locust and other species. But many of them are not as safe as it comes in a famous children's song. A locust, which is a vegetative insect, is able to destroy crops on the fields. This species is able to multiply quickly. Huge families flying in search of food, externally resemble real clouds. At the same time, in its path, they destroy all plants.

But the enemy of the gardens and gardens is the Medveda. With the help of powerful digging legs, it triggers in the soil moves to search for edible underground parts of plants. This leads to their death. The activities of the Medveda sometimes acquire a significant scale, causing irreparable harvest harvest.

Than dangerous lice and fleas

The value of insects in human life and in nature is often negative. Not exceptions are lice. These outstanding insects of moving claws are attached to the bodies of the owner's body, feeding his blood. In this case, the lice can carry deadly diseases: return and rapid typhus.

To avoid infection with these dangerous insects, It is necessary to comply with the rules of personal hygiene: not to use someone else's clothing, headdresses and comb, take water procedures, periodically change underwear.

Amazing beetles

The value of insects in human life and nature is positive and not very, they have a tip of tough. Many of them are predators. At the same time, they destroy many agriculture pests. For example, God's cow eats the TRU, and the beauty of the caterpillars of pest butterflies. But, unfortunately, some themselves apply great damage to agriculture. The weevil destroys the shoots of sugar beet. And the one who had to collect from potatoes, knows that this "handsome" does not need this "handsome" in a special presentation. But the most merciless insect is a bugger. She attacks prey, even being a full limit. In captivity, it is even sometimes fit into small pieces of meat.

But the beetles-insuries, despite the unpleasant name, purify the environment from excrement that feed. At the same time, they rightly deserve the title of the strongest beetles, as they are able to raise the cargo at 90 times harder.

Bitches docks

The man who had to experience the bites of these arthropods, for sure, has long decided that the meaning of insects in human life and the nature is negative. If we are talking about mosquitoes, it is difficult to argue with it. Of course, their larvae serve food for fish. But mosquito bites are able to cause serious allergic reactions. Some species are carriers of malaria and these diseases often have a deadly outcome.

The value of insects in the life of a person and in nature is due to the activities of the flies. Do not think that they are simply intrusive and harmless. On the surface of their body there are many eggs of helminths, viruses, pathogenic bacteria. However, participating in the process of processing dead organic, flies increase soil fertility.

It can be concluded that the value in the nature of the human life of insects is both negative and positive. But during life with them will have to face everyone, because per person accounts for 250 million insects!