Why do flies like to land on people even though they don’t suck blood or bite flesh?

Flies are a common and familiar insect in our daily lives. However, there is a question that many people often wonder: "Why do flies prefer to cling to humans rather than suck blood or bite?".

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Biological Characteristics and Behavior of Flies.

Firstly, flies are completely metamorphic insects. Their life history can be divided into eggs, larvae (3 individuals), pupa, maggot, and adult. Although the lifespan of flies is only about a month, their reproductive ability is very strong.

The feeding behavior of flies is very complex and they are omnivorous, meaning they can eat various substances. According to the Encyclopedia Britannica, flies are omnivorous, they can eat many different substances and have a preference for sugar, vinegar, ammonia, and strong odors.

Some fly species land on us simply because they are attracted to our body temperature. Secondly, other flies land on us, especially in front of us, because they are attracted to the CO2 gas that we exhale.

When the human body sweats, there are a lot of viscous substances and various trace elements in the sweat, flies love to feed on this sweat on the human body. If there is only a small amount of sweat, flies will not come, because there is a small amount of acid in the sweat that is harmful to flies, when there is a lot of sweat, the acidic nature will weaken, so flies can also come and bother.

Therefore, it is important to keep your body clean and change clothes frequently in the summer to stay comfortable and reduce the intrusion of flies.

However, it should be noted that although flies do not suck blood or bite humans, they can transmit diseases from infected individuals to healthy individuals and carry disease germs from the environment into the human body through food and drinking water. Therefore, controlling and preventing flies is very important to protect our health.

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Frequently asked questions

Flies are attracted to humans primarily due to the presence of certain sensory stimuli that these insects find appealing. These stimuli include body odor, lactic acid, carbon dioxide, and other chemicals emitted by human skin and breath. Flies are also drawn to moisture, and they can sense the moisture emitted by human pores, eyes, nose, and mouth.

No, flies do not typically bite humans or animals to feed on blood. While some species, such as horse flies and deer flies, may bite to obtain blood meals, the majority of flies are not blood-sucking insects. They are more interested in feeding on human food, garbage, and other decaying organic matter.

Flies land on people primarily in search of food or moisture. They may be attracted to the salt and other minerals on our skin, or they could be seeking fluids from our eyes, nose, or mouth. Additionally, flies may use humans as a resting place or a vantage point to survey their surroundings.

While it may be unpleasant to have flies landing on you, there can be some indirect benefits. Flies play a role in breaking down organic matter and recycling nutrients in the environment. They can also act as pollinators for certain plants. However, the primary concern with flies is their ability to transmit diseases and bacteria, which can pose a risk to human health.

To deter flies from landing on you, maintain good personal hygiene and avoid strong-smelling perfumes or lotions that might attract them. Stay indoors during peak fly activity, usually early morning and late afternoon. Wear light-colored, tightly-woven clothing that covers your skin, as flies are attracted to dark or bright colors and can bite through loose fabric. You can also use insect repellent containing DEET or picaridin.

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