The feeding habits of flies depend on their species. There are those who specialize in nectar and plant juice, and those who specialize in cannibalism, animal blood or animal wound blood and eye and nose secretions. Common houseflies, Chrysomya megacephala, Lucilia sericata, Calliphora, Hemp flies, etc. belong to omnivorous flies, that is, organic substances in human food, livestock and poultry excreta, kitchen waste and garbage are widely eaten. They have a strong preference for the taste of sugar, vinegar, ammonia and fishy smell.

Whether a fly can complete its life cycle depends largely on climatic conditions. Generally, flies have low density and little activity in winter, and can be seen after being frightened, reaching a peak in late summer and early autumn, and then gradually decreasing. Since early summer, the number of flies will increase rapidly. In the whole fly population, 80% are developing larvae and only 20% are adults, so it is much easier to control larvae than adults.

Extended data

Habit and harm of flies

The feeding habits of flies are very complex, belonging to omnivorous flies, which can feed on various substances, such as human food, secretions and excretions of people and livestock and poultry, kitchen waste and plant juice. After the housefly is full, it can excrete feces at short intervals (several minutes).

Due to frequent vomiting and defecation, there is a lot of water loss, and frequent feeding, flies eat, vomit and discharge on cultured materials, which is seriously polluted. In livestock and poultry farms, feed and drinking utensils are often polluted by it. ?

Flies can spread 50 kinds of diseases, among which important diseases affecting livestock and poultry breeding, such as avian influenza, Newcastle disease, foot-and-mouth disease, swine fever, Pasteurella multocida, colibacillosis, coccidiosis, etc., can accelerate the spread of epidemic diseases when diseases break out. A large number of flies in livestock and poultry houses will cause birds to be restless and pollute eggshells.

The activity of maggots in feces will lead to the increase of ammonia content in chicken houses, which will affect the production performance of chickens. It will also lead to mental anxiety of livestock, and the herds will rub and bite each other, causing appearance damage and reducing meat quality. Poor mental state and excessive exercise of livestock and poultry reduce the ratio of meat to feed, increase the feeding cost and reduce the benefit. In addition, flies can spread a variety of human infectious diseases, thus threatening the health of employees.

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