Flies are insects that possess two pairs of wings, where only one pair is used for flight and the other pair has developed into a sensitive and developed sensor known as haltere, and it has a moving head with a pair of large compound eyes and a mouth capable of piercing and sucking, and the wing gives it a high ability to fly and maneuver quickly, as well It lives almost all over the world except for Antarctica , and is an important pollinator for plants, and it contributes as model organisms to scientific research, in addition to being one of the types of decomposers that analyze dead animals and withered plants into other components that the soil can benefit from, On the other hand, some of its species transmit many diseases and cause huge economic damage to livestock, such as the tsetse fly. In this article, there is some information about flies.

Disease-carrying flies

house fly 

The house fly constitutes about 90% of the number of flies around the world, and is a source of nuisance to many people in cities, as it usually gathers on waste and food waste, and its size ranges from 5 to 7 mm, and the female produces a number of eggs ranging from 600 to 1000 An egg during its life, as the egg hatches within 24 hours or less, and begins to grow as small larvae that turns into a cocoon and then grows until it becomes a real fly, but it poses a big problem as it is a carrier of many microorganisms and microbes in its feet and on its wings, so many seek Scientists to create an insecticide spray that kills them and prevents them from gathering on waste, however, many species have shown clear resistance to pesticides, and scientists have also conducted many genetic researches on plants to resist different types of insects. 

Disease-carrying flies 

Houseflies are the most disease-carrying species of flies, and they can transmit many microorganisms and bacteria that cause many diseases such as salmonella , cholera and skin infections, and scientists have also noticed that species coming from hospitals carry many pathogenic and dangerous bacteria in their feet. After catching this bacteria, the fly flies to food sources such as farms and agricultural markets, and touches humans, which leads them to continuous itching in the event that it causes skin inflammation, and most bacteria and microorganisms can survive on the external parts of the insect for a period of more than thirty days. Scientists are doing a lot of research for ways to resist these bacteria through antibioticsAnd others, as the problem of resistance of most species to insecticides appeared, which led scientists to search seriously for how to stop the spread of flies in agricultural environments and hospitals, in addition to researching the best ways to get rid of waste in a safe way that prevents insects from gathering around them and thus capturing the types of microorganisms present in them.

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