CATDOLL : CATDOLL: Are there maggots in Northeast China in March?

1. Are there maggots in Northeast China in March?

There are maggots in the cold winter because there are larvae of flies in the toilet, and the larvae of flies are maggots. Maggots are small white insects like caterpillars, but they are actually the larvae of flies.

Flies like to lay eggs in a humid and protein-rich environment. The eggs usually turn into maggots after 6 hours. The smell of sauces or rotten substances will also attract flies to lay eggs. In addition to harassing people and contaminating food, maggots can also spread various diseases, such as avian influenza and foot-and-mouth disease. Maggots in food mainly come from eggs laid by adult flies.

Maggots are produced by flies laying eggs, and flies only lay eggs in rotten food. So if you want to prevent maggots from hatching from eggs, you must quickly remove the substances that attract flies to lay eggs and never provide a growth environment for maggots. Therefore, the most fundamental way to eliminate maggots is to maintain a high level of hygiene in the kitchen.

Insects like to live in damp and messy environments. The appearance of insects in the kitchen is because the home is not cleaned in time, the environment is not clean, and ventilation and dehumidification are not done properly, which will attract insects to live here.

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1 There are maggots in the Northeast in March.

2 Because the temperature in the Northeast continental shelf area is extremely low in winter, many people grow foods such as broad beans and bean sprouts indoors. These foods are prone to breed maggots.

3 To prevent food from being infested by maggots, attention should be paid to hygiene and insect prevention during storage and consumption.

1 There are usually no maggots in the Northeast in March.

2 This is because in the cold winter, most insects such as flies are dead or dormant, and maggots will also enter a dormant state at this time.

3 If in a greenhouse or other heat-insulating environment, there may be maggots, but in the natural environment of the Northeast, maggots usually do not appear in March.

There is no Chunlitong.

Because the temperature varies greatly from place to place, it is roughly between April and October. Under suitable temperatures, male houseflies can reach sexual maturity and mate 18 to 24 hours after eclosion, and female houseflies can reach sexual maturity and mate 30 hours after eclosion.

Maggots can reproduce under the conditions of temperature of 22-30℃ and relative humidity of 60%-80%.

2. How long does it take for the maggots that emerge from the flies to become flying flies?

Flies like to lay eggs in a humid and protein-rich environment. The eggs usually turn into "maggots" after 6 hours, and the "maggots" turn into "pupae" after about a week, and the "pupae" turn into "flies" after about a week. The newly transformed flies will start mating and laying eggs after a few days. They mate once and lay eggs for life. A life cycle can be completed in about 25 days.

3. How many days does it take for flies to turn into maggots after they scatter?

About a day or so!

4. How do maggots grow? Why does a piece of meat grow maggots in half a day after it is placed on the ground?

First of all, I can tell you that maggots are the larvae of flies.

Let's do an experiment: (It's better to do it in summer)

1. Take two small pieces of meat and place them in two plates A and B respectively.

2. Cover plate A with a fly net, and leave plate B uncovered.

3. Place the two plates AB outdoors.

4. After a period of time, the two pieces of meat will rot due to the action of microorganisms and bacteria, and attract flies.

5. After a while, you can find that the meat in plate A has no maggots, but the meat in plate B has maggots.

Conclusion: Maggots are produced by flies and are fly larvae.

5. How to determine the age of maggots

Objective To explore the relationship between the growth length of maggots of cadaver flies and the time of death of corpses through animal experiments, so as to provide a reference for judging the time of death of corpses. Methods The experimental dogs were shot dead and the time when the cadaver flies came to the dog corpses, the time of egg laying, the egg stage, and the time required for the maggots to grow to a specified length were observed. Results confirmed that there was a positive correlation between the length of maggots and the time of death of corpses, and then the correlation coefficient θ was calculated, and a formula for calculating the time of death of corpses by the length of maggots was derived. Conclusion Through the verification of actual cases, the approximate time of death of corpses can be calculated by this formula.

In 1935, Alexander Mearns, an entomologist at the University of Glasgow in the UK, finally obtained an accurate set of growth and development rules for maggots by studying the relationship between flies and maggots and the growth pattern of maggots. It was this set of rules that provided scientific proof of the time of death for a sensational murder case in the UK that year, thus solving the case known as the "Devil's Meat Case". That case also became the first case in forensic medicine to solve a case using entomological knowledge. It was also after this that entomology was gradually valued by forensic scientists and even developed into a separate discipline, forensic entomology.