Insect disease is insect-borne diseases. 1. The characteristics of insects infected with fungal disease Fungal infection after the most significant features of insects, insect body or body surface there is mycelium. In the early stages of infection showed the general characteristics of insects, such as indigestion, weakness and disorientation. Host usually change the color, the fungal invasion occurred at the dark spots on the skin. After being parasitic insects gradually die, the body soon after the death of the insects hold is full of mycelium production, or surface coverage hyphae. If the insect body surface covered by a white spore powder may be infected with Beauveria bassiana; green spores covered insects may be infected with Metarhizium anisopliae; yellow and green spores are aflatoxin, with light yellow powdery spores is to be Penicillium. Some of these fungal strains, however, may not produce the color characteristics, usually in the agar medium did not produce pigment. In addition to color, the host state of death can also be used as a feature. For example, flies or locusts are insects fungal infection, host firmly attached to the substrate, or scattered on the ground. Is a homogeneous degree of parasite identification characteristics, such as whether there are holes, is cheese-like, hardened and so on. 2. The characteristics of insects infected with bacterial diseases 3. Characteristics of virus diseases of insects Granulosis virus there is nothing special about the symptoms and the symptoms of different types of insects are different. At first, symptoms are usually the color white, with the attendant loss of appetite. Can appear mottled walls of the body, in most cases outside the abdomen gradually become white or milk yellow, this is the reason the infected fat body. When the diseased tissue decomposition, releasing large amount of capsule, the blood and lymph become milky haze. Some insects, parasites within the organization after the death of liquefaction, when the dermal infection, the skin becomes very brittle, and the nuclear polyhedrosis disease symptoms similar. However, the leather if not infected, the skin on the still relatively strong. Larvae infected by iridovirus, diseased tissue from the white, rainbow colors, blue, green or brown on them to identify. . Other non-inclusion body symptoms of the virus appears to be limited only to their hosts and the type of virus. For example, the genetic to the fruit fly, "Sigma Virus" that carbon dioxide sensitivity in Drosophila. With chronic or acute bee paralysis virus shows symptoms of trembling, and loss of functional coordination. Bee larvae died due to cystic virus cell elongation along the bottom of the head darker than the rest of the parasites. 4. Insects infected with the characteristics of protozoan diseases Insects subjected to protozoan infection, there is little specific symptoms. Most showed general symptoms, including small size, deformities, retardation, difficulty in molting, feeding reduced the white balance disorders and faecal waste production, host surface appears transparent, opaque white on the skin often or expansion area. While some insects are protozoan infection, the performance of the body wall appear in their spots. However, in most cases, weak or dead insects, protozoa infection after the basic characteristics must be further confirmed with a microscope. 5. Rickettsia infection in the characteristics of insect disease Lice were Platts and typhus Rickettsia rickettsia infection does not appear after the initial symptoms, but in the course of infection, intestinal damage was irreversible. In a few hours before death, due to inhalation of blood into the body cavity of blood lice, lice become reddish. Fleas infected with measles, typhoid fever rickettsiae, the slow and dead. However, the same red. In the feeding of hunger, choking, heat, drowning, injury, poisoning and other symptoms caused by chemical agents due to non-communicable diseases, should be determined through detailed analysis of causes.
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Insect diseases insect diseases Insect diseases (inseet diseases) and infectious sub- Two types of non-infectious, the former by a variety of insects caused by pathogenic microorganisms in Disease; which is by mechanical injury, poisoning, nutritional and metabolic disorders, hair Fertility disorders, cancer and genetic diseases caused by other factors. Insect transmission Disease occurs more common, has been attached. Insect pathogen infection and modes of transmission generally through the mouth, anus, Valve, gonopore, etc. intrusion; there are many pathogens can pass through skin Or egg infection. The routes of infection can be summarized as follows: ① contact, ie Pathogens and parasites contacts directly onto the body; ② wound infection, which Pathogen from the insects mutual Yao Shi, natural enemies stab wound penetrated bite or mechanical Parasites; ③ ingestion of infected, that is, the invasion of pathogens by insect feeding; ④ embryo infection, invasive pathogens that female reproductive system, and intrusion is Development of eggs in the mother's body. A vertical mode of transmission of disease transmission and horizontal transmission. The former is Already exists in the insect pathogen mother, the egg will form a package of pathogens Income, or output surface contamination of eggs, and even integrated into the mother cell structure , So that hatched larvae, pupae, adults are also continuous Strip pathogens. Intergenerational transmission of pathogens with the host; the latter state by an insect pest will Insect pathogen spread to the same state or the next generation of coexistence state of the same insect Health pest, but also transmitted between individuals of different species. The purpose of insect diagnosis is accurate diagnosis to determine the type of disease, To study the disease, provide the basis for the law of development. Diagnosis, first Insects exposed to the signs and symptoms. That form of symptoms or anatomical System abnormalities, body color, the body is attached to, or changes in the structure. Symptom table Show any abnormal behavior and function; such as abnormal movements of the stimulus Reaction is not normal, developmental stagnation, digestive disorders (Xie Li, vomiting, loss of appetite Deviation), can not mate, can not lay eggs, respiratory rate and irregular heart beats, early Death; syndrome, said: A group of symptoms or certain disorders exist Like a special combination, or a special order of occurrence of disease symptoms. Diagnosis Step off into history and condition of the collection, pest soma inspection, real Laboratory testing and data analysis and diagnosis. Collection of medical history and condition of the scientific name of the first correct identification of pests, such as Generic _set_ have failed and must be preserved adult specimens good for future reference; are Indeed the correct diagnosis of diseases and insects were identified have the same significance in diagnosis. If Fruit is beneficial insects, as far as possible to determine the name of the species or strains; the strain Often with different degree of difference in susceptibility. The acquisition should also be documented with the worm Environmental profiles and date, host name of the pest, hunters of the insect was The number and degree of susceptibility, a sense of pests state. Pests should be taken back to the same collection Normal live insects, worms collected at the same time back or censorship, that condition shall be recorded, although May include general symptoms and symptoms. If long worms, should be recorded Development of the disease early, middle and late. Check soma soma pest inspection is mainly Anatomy and Physiology Or function of the test. Check the worm body is, should be aware of healthy worms, the first Check posture, body color, body spots, surface cover, smell and so on. If Live insects may be compared with the normal conduct of even more helpful in the diagnosis. Light Records Disease and illness, dying and death changes the reference for further diagnosis. If you can make the system more than the anatomical specimen examination; examination of skin and attached Device, digestive system, excretory system, circulatory system (including hemolymph), the Points