2011年12月7日星期三

Insect

Baike card

insects in the animal kingdom invertebrate animals Arthropoda Insecta, all living species and the largest number in a group, the world's most prosperous of the animals have been found more than 100 million. The basic feature is the body is three sections of head, thorax, abdomen, two pairs of wings and three pairs of feet; one pair of antennae head of health, bone packages in the body outside; life form varied, busy family around the world. Insect structure is different from vertebrates, their bodies are not supported within the bone, wrapped by a layer of chitin (English chitin) constitute the shell. This layer of the shell will be divided into sections to facilitate the movement, like a knight's armor. Insects in the ecosystem plays an important role. Entomophilous flower requires insects help to spread pollen. The bees collect honey, but also people like the food.

directory

About Insecta insects insect species into the world's known species types Chinese breed development environment habits place to live sound principles of the respiratory organs of the body benefit and harm of the most prosperous of the human animal related to the relationship between naming and identifying insect specimens of insects, insect eating the most largest and the smallest insect known as the world's longest painting in the other uses the basic information book information insect insects Introduction Introduction headword: Insects Pinyin: kūn chong basic interpretation [English: insect; German: insekt; Japanese: ko san ち ゅ う. ] Belongs to Insecta arthropods. Body divided into head, thorax and abdomen of three parts, usually two pairs of wings and three pairs of legs, wings and feet are in the chest, the body section by a series of body composition, and further synthesis of 3 sets of individual segments (head, thorax and abdomen) , usually with two pairs of wings. One pair of antennae head raw and bones wrapped in the body outside; life form varied, busy family around the world. Arthropod species is the largest one.

ladybug

detailed explanation of insects collectively. notes from the Soviet Union on June 13 flies, silkworm, butterflies, etc., incomplete metamorphosis through egg, nymph, adult three stages, such as aphids and so on. Insects are usually small to tiny invertebrates, is the most important member of the arthropod. They hope to stay in Brasilia during the evolution of discipline, and to the Carboniferous period, there are 170 centimeters appeared from the wings of large dragonflies. Today they are still very prosperous ethnic group, has over 1.2 million species. Insects are arthropods, they have a hard protective exoskeleton and six jointed walking legs. On Earth at least 500 million different species of insects. They include beetles, cockroaches,[url=http://www.uggoutletmallonline.com/][b]title=UGG Outlet[/b][/url], wasps, ants, bees, butterflies, dragonflies and damselflies and so on. Construct the structure is different from vertebrates insects, their body is not supported within the bone, wrapped by a layer of chitin (English chitin) constitute the shell. This layer of the shell will be divided into sections to facilitate the movement, like a knight's armor. Insects in the ecosystem plays an important role. Entomophilous flower requires insects help to spread pollen. The bees collect honey, but also people like the food. Insecta Insecta Arthropoda is not only the largest one outline, is the largest one in the animal world outline. And plants (including bacteria) to 335,000 kinds of known species around, and only insects 1 / 3. To know the exact number of species of insects is very difficult, because taxonomists are continuing to discover new species, for example, according to statistics, Lepidoptera (moths, butterflies) to 1931, only 8 million, the 1934 to 10 million species, to 1942 to reach 14 million. Insecta is the largest project Coleoptera, species more than 25 million species, of which as a total to more than 60,000 kinds of subjects actually about. Not only are many kinds of insects, and the same number of individuals is also very impressive. Ants can be a group of up to 500,000 individuals. It has been estimated that the number of whole ants may exceed the total number of all other insects. Wheat midge outbreaks disasters in an acre of land with as many as 25.92 million. A tree can have 100,000 individual aphids. In broad-leaved forest in the soil per square meter can have 100,000 Collembola. Face of the wide distribution of insects, no other animal can be compared Gang, almost throughout the whole earth. From the equator to the poles, from the ocean, rivers to the desert, up to the roof of the world - Mount Everest, to several meters deep under the soil, there is the presence of insects. This broad distribution, indicating that insects have amazing ability to adapt, but also a wide variety of insects, the ecological basis. Insecta Coleoptera is the largest in the head, called the There are more than 330,000 kinds of species, accounting for 40% of the total number of insects. Recorded in China more than 7,000 species. Their wing was horny, hard, non-veins, called Exoskeleton developed, hard body, so to protect the internal organs. Great changes in size. Such insects adaptable. Have chewing mouthparts, feeding very wide: divided into herbivorous - A variety of leaf, flower beetles, predatory - Step A, a tiger, rot diet - Yan A,

China arc beetle Popillia quadriguttata

necrophagous - A funeral,[url=http://www.uggoutletmallonline.com/][b]title=Cheap UGG Sale[/b][/url], manure feeding - dung beetles. This groups is a complete metamorphosis, larval feeding habits of living environment and a variety of different forms; mostly naked pupa pupa, rare is the pupa. Insecta Lepidoptera is the second largest in the head, the body and wings are named after a large number of scales. Butterfly is a class of lepidopteran insects active during the day, usually from their bright colors and rod-like tentacles,[url=http://www.buy-ugg.us/][b]title=UGG Store[/b][/url], and the rest of the way they are - four wings folded, set in the back to identify. Expand the base of hind wings of butterflies and powerful, when in flight and connect the wing support. Butterfly world, 17,000 or so known species, are striking insects. Our more than 1,300 butterfly species, 170 kinds in Beijing. Butterfly is a complete metamorphosis insects - life has egg, larva, pupa and adult phases. Mostly plant-eating larvae, adult mouthparts places siphon nectar. Moths are the largest groups of Lepidoptera, Lepidoptera species accounted for 9 / 10. Changes in the appearance of many moths, it is difficult for the general description. Most nocturnal moths, dark in color; also some daytime activities, colorful types. However, moths and butterflies antennae differ - they do not reach the end of the rod, but showing filamentous, feathery, and other styles; another front wings of most moths is to rely on some special connection structure to achieve the flight of connected wings - wings and wing bridle yoke of existence, making the moths and butterflies have more different ways. Moths also complete metamorphosis of insects, as many of the human host the larvae of food sources, moths and humans will become more closely related insect taxa.

Bi butterfly Papilio bianor Cramer

Odonata in the Insecta is more primitive group, is a smaller target. Odonata is divided into three sub-orders: poor wing suborder collectively, the The world's approximately 5,000 species, China has 300. Dragonfly body stout, wings flat when resting at your sides; body slender, wings beam resting place back. Wings sub-orders is between the body and has a thick bundle placed on the back of the wings. Odonata is incomplete metamorphosis of insects, nymphs Adults but also for carnivorous species, preying on small insects, flying fast, ferocious nature. Diptera, including mosquitoes, grasshopper, midges, horseflies, flies, etc., is the larger of the head Insecta. As the adult wing is membranous, hindwings degenerate into Diptera is divided into Longhorn, Shorthorn and three sub-orders split ring. Asian long-horned purpose of tentacles 6 above, including mosquito, grasshopper, Simuliidae, taxa is relatively low; short corner in the five sub-projects reach the following general 3, known as the The Hymenoptera was the purpose of features, including chewing mouthparts, wings connected by front and rear wings hook completion. This groups is widely distributed, more than 100,000 kinds of known species, estimated that at least 250,000 kinds, including ants and bees. According to whether the constriction of abdominal base tapering into Symphyta and slender waist suborder. Symphyta is low herbivorous taxa, including the sawfly, wasp, bee and other groups stems; waist suborder includes the purpose of most types of Hymenoptera, including ants, wasps and a variety of parasitic bees.

O. Coreidae Leptocorisa chinensis

Hemiptera, Hymenoptera, also known as different. These insects commonly known as There are 38,000 known species, is the Insecta in one of the major groups. Hemiptera insect wing covered in the rest of the body back after the wings hidden beneath. Since some groups ossification thickened base wing, a Mouthparts of sucking mouthparts to plants or other animals in vivo sap for food. Insect metamorphosis is incomplete. The abdominal scent glands, encounter predators will jet out volatile smelly liquid. Therefore, also known as Orthoptera is a more common class of insects, including katydid, crickets, mole crickets, locusts, etc., more than 20,000 kinds are known around the world, is widely distributed. Slightly hardened adult wing, known as This groups is incomplete metamorphosis, nymph and adult and many more plants for food, for agriculture, forestry, cash crops have damage; a few species is omnivorous or carnivorous. Orthoptera is a more primitive insect taxa, originated in the original Orthoptera, in the Carboniferous period has been divided into classes Tettigonioidea long tentacles, and the antennae shorter locusts class. Many types of tweet or battle as the habits of a traditional ornamental insects, such as fighting cricket and katydid. Other insects: Hexapoda including Protura, Collembola, and Insecta two-tailed Gang. Insecta addition to the seven projects than there are 27 other projects, a total of 34 projects. Insecta wide range of shapes, but with exoskeleton, three pairs of feet are their common characteristics. Many species is familiar: nasty milkfish - body lice, Siphonaptera - fleas, and so people. Whether you like it or not, they are in place in our lives. Each type of insect species is estimated that the existing types of practical entomologist at between 200 million to five million kinds. The purpose of most types of Coleoptera (Coleoptera, beetles), Lepidoptera (Lepidoptera, butterflies, moths), Hymenoptera (Hymenoptera, bees, ants) and Diptera (Diptera, flies, mosquitoes). Most insects, small, usually less than 6 mm long, but the size of the disparities. Some very small, such as parasitic wasps; and some tropical insects are quite large, up to 16 cm long. Many different types of gender structure. Such as twist Heteroptera (Strepsiptera) of the female egg only into a full pocket of inactive structure, while the males have wings, very active. Reproduction in different ways, reproductive and strong. Some insects (such as mayfly) only in the larval feeding, not feeding from the body. Social insects, ants, and later (after termites) can live 50 years or more. However, some mayfly adult life less than two hours. Habits vary. Density vary widely in insects in a wet soil can be up to 4 million, but only in the same context may occasionally see a butterfly, bumble bees or beetles and other large insects. From desert to jungle, from the ice cold mountain streams to the lowlands to the death of reservoirs and hot springs, fresh water or land for each habitat, as long as there is food, there are insect life. There are many people living in sea water salinity up to 1 / 10 of the brackish water, a few species live in the sea. Some Diptera larvae can live in crude oil pool, feeding the insects fall into the pool. Insect egg shell usually have breathing holes, and in the shell to form a ventilation network. Some insect eggs stick together to form egg cases. Some insects in the egg stage through the adverse environment. If some of the grasshopper egg through to the summer drought, to be wet when the re-development. In dry conditions, mosquito egg development is completed in entering a period of dormancy, such as into the water, quickly hatch. Recent research on the type of world that the world may have 10 million kinds of insects, about half of the earth all living species. But a named insect species only 100 million species, accounting for the known species of the animal kingdom 2/3- 3 / 4. Thus, the world of insects and 90% of species we do not know; by the most conservative estimates, the world at least three million kinds of insects, there are still 2 million kinds of insects that we have to be found, described and named. Each year, about the world is now published 1000 new species of insects, which are included in the Already naming the insects, Coleoptera (beetles) have as many as 350,000 kinds, of which the largest Curculionidae, including more than 60,000 kinds, are mammals, 10 times. Lepidoptera (butterflies and moths), followed by about 20 million. Hymenoptera (bees, ants) and Diptera (mosquitoes, flies) are about 150,000 kinds. Not only are many kinds of insects, and the same number of individuals are also many insects, and some surprisingly large number of individuals. An ant colony can be up to 500,000 individuals. A tree can have 100,000 individual aphids. In the forest, per square meter can have 100,000 Collembola. Locust outbreak, the number of individuals up to as much as 7 to 12 billion, with a total weight of about 1250 to 3000 tons, covering an area of ​​up to 500 group flying to 1200 hectares, it can be said is shrouded cover date. China China's vast territory known species, the natural conditions are very complex, is the only two animals across geographic region, to which is the world's one of the largest insect species. In general, our kind of insect species of the world's 1 / 10. Insect species have been naming the world's 100 million, the naming of our country should be 100,000 kinds of insects around, naming can be found in our country has only 50,000 kinds of insects, to catch up with the world's current level of long way to go. Moreover, the world's insect species should be 300 to 1000 million species, insects, so China should be 30 to 100 million. Thus, there are too many of our new species of insects, waiting for friends who wish to study insects to discover, name, describe them. Development than the larvae hatch and breed on different channels. Such as moths, butterflies animal bite out of the eggshell; fleas are hatching spines, with spines and cut a slit in the shell; turned down some eggs on the egg shell cover out of eggs. Swallowing air when the larvae hatch, so hard to earn the egg shell; to the epidermis after hatching before hardening, continue to swallow air, the expansion itself. Once the hardening of the skin, it can not long, only through a series of molting, the shedding old skin, grow larger in order to grow new skin on the occasion. Molt, the body may be sudden change. Most primitive wingless insects, such as silverfish, grew up into adults in the process of the body structure is almost unchanged, as no insect metamorphosis. And grasshoppers (Orthoptera [Orthoptera]), bugs (Heteroptera different Homoptera []) and aphids (Homoptera [Homoptera]), the same shape at first, until finally become winged adults, but also mature genital , called incomplete metamorphosis. Of higher Lepidoptera, Coleoptera, Hymenoptera and Diptera are complete metamorphosis, the larvae completely unlike the adult; a series of molting larvae, small changes, then change the pupa, and then becoming an adult. Larvae of a variety of shapes, can be divided into five types: type (moths, butterflies animals), grub-type, silverfish type (type), beetle-and maggot-type larvae. Divided by the pupa pupa (with varying degrees of limb close to the body), from the pupae (not close to the appendages on the body) and around the pupa (essentially from the chrysalis, but was formed by the skin sac larvae surrounded) . Molting and metamorphosis are controlled by hormones. Ecdysone secretion by the brain's nerve cells start to produce hormones. This hormone acts on the chest of a endocrine gland - the thymus before, before the thymus produce ecdysone, acting on the dermis, stimulating growth and the formation of the epidermis. Metamorphosis is also subject to hormonal control: In the larval stage, behind a small gland called the pharyngeal side of the body, the secretion of juvenile hormone. As long as there are juvenile hormone in the blood, the dermal cells are larval molt skin. To the last instar larvae no longer produce juvenile hormone, so the insect metamorphosis to become adults. In complete metamorphosis insects, pupae in a very small amount of juvenile hormone in the case development. Although any insect diapause period can occur, but is most common in the pupal stage. In the temperate zone, many insects overwinter in the pupal stage. In addition to morphological changes during development, many adult insects, how-state phenomenon. For example: After the ants and worker ants, bees and wasps are different after; a soldier termites, reproductives and persistent larvae; adult aphids are winged or without wings and divided; some

horned insect fossils butterfly with eye-catching two-state nature of the season. These differences could be interpreted as: each member of each of the genes have the ability to develop into different types, due to environmental stimulation of specific developmental pathways. Hormonal control of these changes may be part of. Most insects camp sexual reproduction. Butterfly vision is very important, Cidie color in flight to attract the same kind of male butterflies. Some mayfly and midge fly in groups of males to attract females. Some parts of the female beetle body fat to form a light-emitting organ to attract males. Male voice to attract female crickets and grasshoppers, male mosquitoes were flying female mosquitoes attracted by the sound. But the most important thing is the smell. Most females secrete pheromones to lure males, males can produce equally attractive female odor. Mating and spawning needs appropriate temperature and nutrition. A pregnancy, life-long spawning. Mating, spawning, especially during the protein needs of adult Lepidoptera only sugar and water, larvae under the required reserve protein. Temperature and nutrition often influence hormone secretion. Spawning usually requires juvenile hormone or hormones from the neurosecretory cells. Without these hormones, the reproductive disruption. These phenomena observed in the winter potato beetle. A few rare male insects, the female for parthenogenesis. Temperate aphids produced only camp in the summer parthenogenetic female aphids, aphid embryos within the development in the mother (viviparous). Some gall midge larvae in ovarian oocytes in parthenogenetic for the start of development, the mother parasite larvae destroy the wall to escape, called larvae reproduction. Living environment, living habits Lu Shengkun insects in the environment is too hot when looking for a cool damp premises. If exposed to sunlight, it makes itself in the position of the smallest surface heating. If too cold, insects stay warm in the sun. Many butterfly wings in flight before the need to collect heat. Moth wings in flight before the shock or shake the body, and by the hair or scales around the body to form a layer of air insulation to keep body heat. The most suitable flight muscle temperature is 38 ~ 40 ℃ (100 ~ 104). In the cold, the body is frozen insects the greatest danger. Species wintering in cold regions can be as cold insects. Few insects can tolerate ice crystals appear in body fluids, but in this case, cell contents may not be frozen. But most of the insects means to prevent freezing cold. Concentration of frost effect was partly due to a large number of glycerol as antifreeze; partly due to physical changes in the blood, the temperature is far below the freezing point and does not freeze. Anti-arid, including hard wax and the expansion of water storage mechanism. Aquatic insects in addition to a significant pereiopod changes for swimming, the main adaptive change is breathing. Some rose to the surface to breathe. Mosquito control using only the end of the last breath of abdominal breathing pores. Longshi between the elytra and abdomen with a storage chamber. Air-breathing insects in the surface air layer formed between the hair, such as the role of the gills, it made the water from the air, extending dive time. Insect larvae in the water directly from the water to get gas. Chironomid larvae are abundant throughout the epidermis of the trachea. Trichoptera (Trichoptera) and Ephemeroptera (Ephemeroptera) larvae have tracheal gills. Large dragonfly larvae gills in the rectum, anus and out of the water provided from the oxygen. Place to live so many insect species, therefore, their lifestyle and living place must be varied, and some insects and live the lifestyle performance instincts great research value. It can be said, from the horizon to the Cape, from the mountains to the abyss, from the equator to the poles, from the ocean, rivers to the desert, from grasslands to forests, from the field to the interior, from the sky into the soil, everywhere insect presence. However, according to the state of the main insect most appropriate venue to distinguish, can be divided into five categories. (1) The life of insects in the air: These insects are mostly active during the day, adult stage with well-developed wings, usually have well-developed mouthparts, long adult life. Such as bees, wasps, dragonflies, flies, mosquitoes, gadfly, butterflies and so on. Insects in the air phase of activity is mainly spread to migrate, find prey, mating courtship and spawning site selection. (2) on the surface living insects: these insects without wings, or wings to fly, but have poor or only crawl and jump. Some good flying insects, their larvae and pupae are also living on the ground. A number of parasitic insects and feed on plants and animals specifically to corruption insects (including human life, insects in the room together), but also most of the surface activity. Insects on the surface activity of the vast majority of all insect species, because the ground is the seat of insect food and habitat. These insects are common beetle (fart worms), cockroaches and so on. (3) of insects living in the soil: these insects are to plant roots and soil humus for the food-stuffs. Because of their activity in the soil and the plants become root grazing agriculture, fruit trees and seedlings of a great harm. These insects most afraid of light, most of the types of activities and migration may be weak, drill into the ground during the day and very little activity at night and rainy day activities of their most appropriate time. These insects are common mole crickets, cutworms (moth larvae), cicada larvae. (4) The insect life in the water: some insect life in the water, such as the purpose of the negative sub-half-winged bugs, Tian turtle, turtle bugs, program bugs, etc., Coleoptera Long Shi, water turtles and other insects. Some insect larvae only (especially refer to them as nymphs) live in water, such as dragonflies, caddis, mayfly and so on. Aquatic insects are a common feature: side of the body of the valve degradation, and at both ends of the valve body or developed tracheal gills instead of a special valve for respiration; most species are flat and hairy enough to swim, play the role of the water. (5) parasitic insects: the size of these insects is relatively small, relatively poor activity, most types of larvae have no feet or foot is no longer able to walk, eye sight has weakened. Some parasitic insect parasitic life in the mammalian body surface, relying on blood-sucking for a living, such as fleas, lice and so on. Some are parasitic in animals such as horses stomach flies. Parasitic insects in some other insects, beneficial to humans, can use them to control pests, known as biological control. These insects are wasps, Ichneumonidae, Braconidae, sent flies. In the parasitic insects, there is a parasitic phenomenon called heavy. When a parasitic wasp that is parasitic flies or parasites in herbivorous insects, there was a parasitic insect resent the other was born in the former parasitic insects. Some species can also be double, or triple parasitic. These phenomena on insects, but an instinct to survive competition. Respiratory organs of insects, the body no nose, how they breathe it? Is the original insect tracheal breathing, they have a special respiratory system, that is composed by the valve and the pipe organ systems, the valve is equivalent to their Chest and abdomen in insects arranged in neat rows on each side a row of round holes, which is the valve. Valve is similar to human nostrils, have exclusive competence in the orifice filter cloth brush and sieve, as the same gate to prevent the invasion of other objects. There is also open and close the valve can be a small flap, holds the valve closed. Valve is connected with the trachea, the trachea and branch into many micro-tube, through to the insects in various parts of the body. Insects rely on a shrinking piece of the abdomen, through the valve, the trachea to breathe. Terrestrial insects can be highly adaptable to the environment, one of the reasons is that with such a special respiratory system. Ants, grasshoppers, mantis, butterflies, bees, mosquitoes, flies and other insects Lu Shengkun are breathing in this way. Insects living in the water valve is used for breathing. Like a dragonfly, mayfly larvae of long-term adaptation of the aquatic environment, but also the formation of a new respiratory organs - tracheal gills, breathing like a fish can be dissolved in water, air. Sound principles of insect pronunciation is divided into three categories: (a) flight, feeding, courtship activities. Human beings can hear the vibration frequency of 20 ~ 20000Hz. Butterflies of 7 ~ 13Hz; flies to 147 ~ 220Hz; mosquitoes flying flapping wings of the vibration frequency of about 594Hz; so we can hear the flapping wings of flies and mosquito sound. (B) the physical impact other objects produced. Such as stealing worm-eaten head hit the tunnel wall, the sound, certain types of male Tenebrionidae courting the female breast using abdominal tumor friction film with a sharp sound. (C) insects have their own special vocal organs. (1) friction pronunciation. Vocal of the two parts rub against each other and pronunciation. Such as cricket, katydid, grasshoppers, mole crickets, bugs, beetles, beetle and so on. (2) membrane vibration pronunciation. Homoptera, Hemiptera, Lepidoptera of some species has such a pronounced way. Lee and harmful insects are beneficial insects and pests of the points. Pests: 1. The production of aphids and other crimes against humanity (2) endanger human life, cockroaches, flies, mosquitoes and other beneficial insects: beneficial to the production and living bees, praying mantis, dragonflies and other aphids are a pest, damage crops and ornamental plants in most . Beneficial insects and pests is a relative term, beneficial insects will do something harmful to humans, beneficial insects will do, but the degree may vary. Such as: ants are pests. 45% of it is always in the human food because ants crawling chaos, chaotic eating, not health. Ants are beneficial insects. 20%, the ants eat the ice was good health, for some order to help cure patients. Insects in the natural environment plays an important role. They help bacteria and other organisms break down organic matter, help build the soil. With the evolution of insects and flowers, as many flowers pollinated by insects. Some insects provide important products such as honey, silk, wax, dyes, pigments, and thus were useful, but feeding all kinds of organic matter, causing great damage to agriculture. Pest damage nature or storage of grain or wood, the grain, livestock and people between the spread of harmful microorganisms. The most prosperous winged animals fly insect is the only winged invertebrates in a class, but also the first winged animals of a taxon. Flying ability to obtain, to insects feeding, courtship, to avoid the enemy, proliferation, and bring great benefits; multiply rapidly insects with amazing ability to reproduce. Most insect eggs laid in the range of several hundred, with social insects with parthenogenetic fecundity more, if necessary, a queen bee can lay one million lives, some have estimated a parthenogenetic If future generations of aphids all survived and continue to multiply, then the total number of aphids after six months up to 6 billion or so. Strong reproductive potential is the basis of a prosperous population; advantage of most of the insects are small with relatively small, only a small amount of food that is able to meet their nutritional needs of growth and reproduction, but also to the living space, flexibility, avoid the enemy, reducing the damage, the wind has many advantages such as migration; feeding organs of diverse groups of insects have different types of mouthparts, which chewing, chewing mouthparts suck, lick suck mouthparts, sucking mouthparts , siphon mouthparts of five species, on the one hand to avoid competition for food, while some degree of improved feeding insects and object relations; with the vast majority of insect metamorphosis and the developmental stage of complete metamorphosis, most of which types of immature stage and adult stage in the habitat and feeding habits of individuals differ widely, thus avoiding the same or similar insects in space and food and other needs of contradictions; adaptable from the wide distribution of insects, many species, large quantities , continuing a long history know so we can push the strong ability to adapt, regardless of the temperature, hunger, drought, pharmaceutical and other insects have a very strong resilience and insect life cycle is shorter, easier to put on the populations of beneficial mutations preserved. For cyclical or long-term adverse environmental conditions, insects can diapause or dormancy, some species diapause in the soil in a few years, ten years or longer, in order to maintain continuity of its population. Naming and human related to each of their samples the scientists who studied the creature had no record of taking a Latin scientific name, genus and species names, including two Latin words, known as the binomial method, 1758, first by the Swedish scientist Linnaeus . Naming is based on the specimens as type specimens, which specifies a positive model, and the remaining as deputy mode. Relationships with the people on the planet since, as people get subsistence from nature to transform nature, bound to compete for resources with insect problems; the other hand, insects are also provided for human resources. Thus people will have taken place with insects close relationship. Insects with human relationships is very complex, a complex relationship is one of the main factors of insect feeding unusually wide. According to previous estimates, 48.2% of insect herbivores in; 28% of the predators, the predator of other insects and small animals; 2.4% is parasitic, parasitic on other insects, animals, in vitro and in vivo: there are 17.3% water corruption of biological organisms and animal waste. The draw for us a general outline of harm beneficial insects. But this is just a natural phenomenon, and people benefit from the concept of harm the economic interests of the people point of view, and therefore much more complex. Here is harmful to humans and insects beneficial aspects were discussed. Identify insect comes to insects, perhaps we are very familiar. Color swirling butterflies, honey bees visit flowers, silk cocoon of silkworms, sing of cicadas, crickets aggressive gaining the upper hand, stars flashing fireflies, dashing, the shape of the dragonfly aircraft, simple and honest cute little ladybug , holding one pair of knives, angry staring eyes of the mantis, annoying flies, mosquitoes, cockroaches, and so on. So, what insects do? Spinning spider, scorpion stings are not insects? Millipedes, centipedes do? To these questions, you do not fully know the result, now let's take a look in the end what kind of insects do insects be considered? Insects and other organisms, the classification has its own special place. It belongs to the animal world in the Insecta Arthropoda. Its main features are as follows (similar to the color Wanzhi Figure): (1) part of the body are composed of a collection of head, thorax, abdomen individual segments, but not division (2) the head is feeling and feeding centers, with mouthparts ( mouth) and one pair of antennae, compound eyes and usually have one eye (3) of the chest is a sports center, with three pairs of feet, generally there are two pairs of wings (some pair, such as flies, and some not, such as ants, etc.) (4 ) the abdomen is the reproductive and metabolic center, which contains most of the genitals and internal organs (5) Some insects go through the process of growth and development of a series of internal and external morphological changes, in order to transform into adults. This change in posture is called metamorphosis. Some lower insects without metamorphosis during development (such as silverfish); others are not complete metamorphosis (eg, dragonflies); some higher complete metamorphosis of insects (eg butterflies). (6) beeps and insects are male, females do not tweet. With the concept of insects, on the issue in front of you now know the answer: spiders, scorpions body divided into head and thorax and abdomen in two, also with eight long legs, so it is not insects. Centipedes and millipedes of the leg is more, almost every aspect (body section) 1 to 2 on both pairs of legs, of course, not even an insect. Bring insects edible insects, people will think of ants, crickets, dragonflies, grasshoppers, cicadas, caterpillars and other bizarre animals. These small animals Zhuolai play, watch what is acceptable, but to eat as food into the stomach, it may be hard to imagine there are a lot of people think, maybe even nausea and vomiting. In fact, insects as human food has a long history, the world's many countries and regions, have the habit of eating insects. According to incomplete statistics, China's consumption of insects as food around about dozens. Insects not only rich in organic matter, such as protein, fat, carbohydrates, inorganic substances such as potassium, sodium, phosphorus, iron, calcium salts of the content is very rich, as well as essential amino acids. According to data analysis, each containing 100 ml of insect serum free amino acids 24.4 ~ 34.4 mg, much higher than the free amino acids in human plasma. Insects is also very high protein content, dried cicadas with 72% of the protein, the Hornets with 81% protein, termites body is higher in protein than beef, 100 grams of termite can produce 500 calories, 100 grams of beef, but only have 30 calories. Insects as food in addition to the above advantages, there are generations of short, breed quickly, easily accessible and so on. Thus, when in distress in the wild, insects are often the preferred food in distress, I own more than ten species in the wild to eat, I feel pretty good taste. For outdoor enthusiasts of edible insects have some understanding of the author in this field easier access to our list, good taste is still edible insects, capture and consumption methods, intended for eating insects, ! Related articles:

没有评论:

发表评论