Fortune Telling Collection - Ziwei fortune-telling - How many years is the vitality of fleas?
How many years is the vitality of fleas?
Fleas are only 0.5~3 mm long and weigh only about 200 mg, but the jumping height can reach 350 mm, in other words, the jumping height is more than 100 times its length. If a flea is as big as a human, its high jump can reach 200 meters. I'm afraid this record is hard to set by the best high jumpers today. What is even more surprising is that fleas jump every four seconds and can jump for 78 hours in a row. The force used for vertical takeoff is 140 times of the gravity of the earth, that is, 140 times of its own weight. If it takes 100 years to reach the planet according to the normal travel speed, it only takes one year according to the flea jumping speed. Scientists have done a series of experiments in the laboratory, each time the difficulty is higher and the environment is worse, in an attempt to solve the mystery of fleas. Finally, they found that despite all kinds of hard tests, fleas were intact and showed indestructible mysterious skills. Scientists let a flea jump five times, and then jump again, but not on its legs, but on its head or back, and set up various obstacles for it when it falls. As a result, the fleas kept jumping as before. Although its head or back hit an obstacle, in the end, scientists did not find that the flea had a concussion or a broken internal organs. Why do fleas have this unique ability? Is flea a kind of low-level creature with simple form and complex performance? Is the structure simple? No, the growth and development period of fleas is not shorter than that of some mammals. It goes through three larval stages, then cocoons like silkworms, and comes out of the cocoon a month later, becoming a flea with complete organs, which is longer than the time from embryo development to birth of rabbits. Fleas have slender sensory hairs, and in a sense, their sense of smell is more sensitive than people's. Trained fleas can also become excellent "actors". Hans Martes and his son run a strange circus in West Germany. The actors in the troupe are neither tigers nor elephants, but fleas as small as punctuation marks. Hans Martes and his son fed them with blood from their arms, and trained these fleas to perform various programs: flea driving and gun pulling, flea riding on a wooden horse, flea bowling, and flea training-a group of flea soldiers practiced in groups under a flag the size of a needle. The most wonderful program is "Flea Waltz". During the performance, flea dancers danced in the waltz music. Scientists with special bone structures have found that the "bones" of fleas are unusual. Its skeleton is made of soft and colorless chitin, and the outer bread is covered with a brown film. It has 19 free movement links, including 6 in the head, 3 in the chest and 10 in the abdomen. The side of the flea is arched, its body is particularly flat, and its side resistance is great, so it is difficult to strangle it with your fingers. However, although the flea has such a special skeleton and body shape, these alone cannot guarantee that its internal organs will not be shattered. So, what's special about it? Blood vessels and bodies become fleas. Take-off is like a bullet leaving the chamber, and it disappears with a whoosh. Even the fastest modern movie camera can only capture the blurred figure when it jumps. If the plane flies at such a fast speed, the pilot's cerebral vessels will rupture. Fleas have no blood vessels, or the whole body looks like blood vessels. Flea's body is full of blood. Blood is a nutrient solution containing amino acids, protein, fat and inorganic salts, and its internal organs are soaked in this nutrient solution. Therefore, some people call fleas "jumping water drops". Flea is a small ectoparasitic blood-sucking insect of mammals, birds and humans. Flat, wingless, jumping, brown, feeding on animal blood. Fleas are common ectoparasites in cats, especially those who are allowed to go out freely. 1. Fleas are carriers of many pathogens and infectious diseases, and can survive and reproduce in fleas for a long time. Such as plague, rabbit fever, endemic typhus, scrub typhus and yellow fever. When fleas suck the blood of patients and then the blood of healthy people, healthy people are contaminated by wounds or spread by machinery. Fleas are harmful to human and animal health. 2. Fleas don't like light, so their activities and reproduction are mostly in the dark, especially where their hosts sleep. Fleas breed very quickly, and in the hot season in the south and north, they can breed a generation within a few days. If the temperature and humidity are not suitable, the time should be extended. Different kinds of fleas have different requirements for temperature. For example, Huang Kai fleas breed most in summer, while other fleas breed most in autumn and winter or spring and autumn. Fleas feed on blood. Long-term parasitism will make cats itch and fidget and have a bad rest. In severe cases, they can lead to anemia, emaciation and even death. Cats will be affected in autumn, winter and early spring. When the cat hair is found to be rough, dirty and itchy, it is necessary to consider whether there are fleas. Fleas hide in hair, especially when the roots of hair stick to the skin. Once exposed, fleas will jump away immediately, making it difficult to see. A lot of small black spots (flea excrement) can be seen near the hair roots of cats with fleas. 4. Prevention and treatment: comb the coat and take a bath regularly to keep the surrounding environment clean. Bathing cats with Stemona root decoction or trichlorfon solution can kill fleas, but after washing, wash away the liquid medicine with clear water. Fleas are parasites that suck the blood of all warm-blooded animals, most of which are cat fleas, and often suck the blood of cats, dogs and people. Habits: Fleas usually shuttle between rodents and mammals. They are parasitic on domestic pets and wild animals. Fleas use their powerful legs to jump horizontally between 8 inches and 16 inches. Natural environment: fleas are usually parasitic on mammals for life, and sometimes they can be found in shoes, furniture legs and baskets. Through them, fleas can migrate to new environments, and they can also be found in furs and urban facilities. Precautionary tip: Cleaning and air circulation can prevent fleas from breeding and laying eggs. Keep the lawn flat, avoid the survival of wing biting animals, keep the pet's fur clean regularly, especially outdoors, and often let the veterinarian check it after bathing and coming back from outside. It is also important to hire a professional pest expert to protect your home from fleas and pests. A flea can jump at most 3 meters, and at most 1.5 meters. The secret is that it has a pair of developed and strong hind feet suitable for jumping.
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