Food preference and foraging methods:

Flies are omnivorous insects, while common species prefer sweets or scavengers. For example, syrphids and parasitic flies like to visit flowers and suck honey; Drosophila and fruit flies like to eat fruit or rotten fruit; Calliphora, Musca domestica and Carnivora prefer carrion and feces.

The thick sucking mouthparts, which resemble trunk, are the sharp tools that most flies use to lick liquid food. Before feeding, many flies secrete digestive juice to dissolve the nutrients in food, and then feed and absorb them.

folding habitat environment

The habitat (habitat) of flies is closely related to their food preference.

Syrphidae often hover around the flowers, while carrion-eating, feces-eating flies and Calliphora are frequent visitors to the landfill.

Because flies such as houseflies, calliphora, and flesh flies often feed between human food and dirt, they have become the culprits of spreading bacteria and epidemic infectious diseases.

the habit of folding larvae

the larvae of syrphids prey on swarms of aphids or scale insects that are harmful to plant health, which makes a great contribution to the suppression of pests. Parasitic fly larvae will parasitize butterflies and moth larvae, and when they are mature, they will drill out of the host to pupate, resulting in the death of the host, which virtually reduces the chance of crop damage. The female flies of fruit flies often lay eggs on the fruits of orchards or farmland, so that the larvae can host the fruits to grow, but they also lose the edible value of these fruits and cause serious economic losses.

However, not all these different flies are harmful to human beings, and some species have made direct or indirect contributions to human beings.

growing environment

what is the most suitable temperature for flies? 27~31℃。 8~12℃? Sometimes flies can move, but they can't mate, and they can't stand on food. They can only land on the ceiling and walls, and they don't like to move. Is it below zero? 5℃? When, 3~5? Days of death. The temperature required by fly larvae is higher than that of adults. What is the optimum temperature for its fastest development? 35℃, below zero 1~2℃? Stop activity, below zero? 5~6℃? Death when the temperature is too high? 45~55℃? The increase speed is reduced by half compared with that at normal temperature. Do fly larvae require food temperature? 31~35℃? Appropriate. Humidity, adults require indoor humidity? 55~61%, when the humidity is too high, the fly legs and body are easy to get wet and hinder activities. What humidity does the larval growth need? 65~71%。 Flies like to move in bright places, and the greater the brightness, the greater the activity. Artificial breeding flies should be equipped with a lighting device in the room, with daily illumination? 11? Hours or more.

Harm

Flies are harmful to human beings because they carry a variety of pathogenic microorganisms. Flies are hairy on their body surfaces, and their foot pads can secrete mucus. They like to crawl in feces, urine, vomit and corpses of human beings or livestock for food, and they are very easy to attach a large number of pathogens, such as Vibrio cholerae, Salmonella typhi, Bacillus dysenteriae, Hepatitis B, Polio, Hepatitis A and Ascaris eggs. It often stays on human body, food and tableware, and has the habit of rubbing its feet and brushing its body when it stops. The pathogens attached to it will soon pollute the food and tableware. When flies eat, they first spit out crop fluid and dissolve the food before inhaling, and they will eat, spit and pull. In this way, the pathogens originally eaten in digestive juice will be spit out together, polluting the food it has eaten, and people will get sick if they eat these foods and use contaminated tableware. The epidemic of cholera, dysentery and bacterial food poisoning are directly related to the spread of flies, but it is not useless. Without it, human beings will be trapped in a putrid place.

Prevention measures

With the development of animal husbandry in China, intensive livestock and poultry farms are increasing. Because some farms do not pay attention to the harmless treatment of livestock and poultry excreta, and are close to residential areas, the pollution of the surrounding environment is becoming more and more serious, which leads to the breeding of harmful organisms, such as the harm of flies, which has become a very serious problem.

prevention at home

domestic garbage should be packed in plastic bags, and it should be cleared every day. Don't stay in one place for a long time, and don't let flies come into contact with it to lay eggs.

trash cans (boxes, cars) must be covered and removed in time.

timely eliminate the garbage in front of the house, behind the house, inside and outside the unit and the sanitary corner.

Restaurants, stalls and places where food exists should have facilities for preventing and killing flies.

it is forbidden for urban residents to keep poultry and livestock.

Don't use the viscera and bones of chicken, duck and fish as fertilizer.

hotels, restaurants and restaurants should have perfect fly-proof and fly-killing facilities, and the garbage should be sealed and removed in time.

natural enemies can be used for control. For example: spiders, geckos and so on!

fly food method

natural enemies of flies

vinegar drive away flies-spray some pure vinegar indoors and flies will stay away.

orange peel method-burning dried orange peel indoors can not only repel flies, but also eliminate indoor odor.

onion to drive away flies-put more chopped onions, onions, garlic, etc. in the kitchen. These foods have a strong pungent and irritating smell and can drive away flies.

tomato drive away flies-put a potted tomato indoors to drive away flies.

the method of driving flies by residual tea leaves-drying residual tea leaves and burning them in a toilet or gutter can not only drive away mosquitoes and flies, but also remove odor.

killing at home

the most primitive: swatting flies to death with a fly swatter. The fly killing effect of this method depends largely on the skill of the operator. Advantages: low cost. Disadvantages: the effect of killing flies depends largely on the technology of killing flies; Will produce pollution. A new electronic fly swatter has overcome the shortcomings of traditional fly swatter, but the cost of fly swatter has increased.

fastest: pesticides kill flies. There are two commercially available fly killers: stomach poison and contact poison. Stomach poison: enters its digestive system through insect mouth to kill it, such as trichlorfon. Contact killer: it penetrates into the insect body after contacting with epidermis or attachments, or corrodes the wax layer of the insect body, or blocks the valve to kill pests, such as pyrethroids and mineral oil emulsions. Killing flies will pollute the environment at the same time, especially stomach poison, which is not suitable for food factories with food production and pharmaceutical factories with drug production.

Around-the-clock ultraviolet light traps and kills people. Flies belong to phototaxis animals, especially sensitive to ultraviolet rays. Using this characteristic, humans invented the ultraviolet trap lamp, and the power grid outside the ultraviolet lamp can make flies die of electric shock. Advantages: no pollution; Can kill flies day and night. Disadvantages: it will produce sparks and is not suitable for flammable and explosive places.

safest: put sticky fly paper. When a fly accidentally hits or falls and stops, it is stuck and cannot move. This method is only applicable to places where there are many flies and there is no need to strictly kill flies.

keep the wall clear. What is the longest life span of flies? 15? God, if you don't get food for a long time, you will die soon. Therefore, keeping all food properly and disposing of garbage is a fatal blow to flies.

a trump card-a wet rag to kill flies. After throwing the rag with water, the kinetic energy is large, so the range is long, and the coverage area of the rag is large, which increases the hit rate. After a period of practice, the rag thrown by the practitioner will become a fly's nightmare.

adhesive-catching fly-killing lamp: it combines the characteristics of the third and fourth types of fly-killing lamps, selects the most effective lighting frequency of the black light tube to attract flies and other flying insects to fly into the lamp box, and is stuck by the pre-built anti-ultraviolet adhesive board. The whole process is noise-free, odorless, efficient, hidden, safe, non-toxic and pollution-free, and it is a widely recognized product in the market.

the most environmentally friendly and direct way: you can shoot flies directly with your hands. Because the fly's take-off angle is in line with its plane? At 31, flies are very sensitive to the small airflow, and shooting directly from top to bottom often doesn't work, so you can choose the horizontal shooting method. Choose a flat place where flies land, clap your hands and approach the flies quietly, with palms apart? 41cm? Left and right, the little finger of both hands is connected to the fly? 4~7cm, the midpoint of the connecting line between the palms of both hands is in a vertical line with the fly, which can ensure the maximum hit rate. When you are ready, quickly close your palms and the fly can be destroyed in your hands. After? 31? You can master this fly-killing method in about 11 actual combat exercises. If you use this method for a long time, the hit rate can reach? 71%? Above. You need to wash your hands and disinfect them in time after killing flies by this method.