Only female mosquitoes bite. What happens is this: The needle-like mouth part, probes your skin looking for a blood vessel. When the mosquito finds one, she sucks out some blood, leaving behind a little of her saliva, which acts as an anticoagulant as it is sucking up your blood and allows her to feast more efficiently. Your body creates histamines, making the area itch.
7 months ago
Last edited at 3:39PM on 8/20/2013
They are food to spiders, frogs & other stuff. And they itch a lot because they have some kind of poison in it, making us feel like itching it :) But I don't know why it really exists either. Ask God! If it helps, I slap the bite to make it less itchy xD
7 months ago
Last edited at 3:41PM on 8/20/2013
The itching that you feel when you get bitten by a mosquito and the bump that develops are actually a response of the immune system to antigens that are present in the mosquitoes saliva. When a mosquito bites us it injects a bit of its saliva, which acts as a 'local anesthesia' so we won't know for a few seconds that we have been bitten.. It also acts as an anticoagulant, preventing the blood from clotting so the mosquito can be free to draw blood for as long as it pleases. The body sends the IgG and IgE antibodies to deal with this sudden invasion of foreign proteins (antigens) that have entered with the mosquitoes saliva, thus leading to a normal immune response of swelling and itching. If you are wondering why your mosquito bites itch and swell, then you might be having a reaction which is a little more than others' reaction to mosquito bites or you have not been bitten before. In kids, this is often the case and adults gradually develop an immunity or resistance against the antigens making their body react less seriously.Someone else can answer the why mosquitoes exist.
Mosquito larvae are aquatic insects, and as such, play an important role in the aquatic food chain. According to Dr. Gilbert Waldbauer in The Handy Bug Answer Book, "mosquito larvae are filter feeders that strain tiny organic particles such as unicellular algae from the water and convert them to the tissues of their own bodies, which are, in turn, eaten by fish." Mosquito larvae are, in essence, nutrient-packed snacks for fish and other aquatic animals.
Their role on the bottom of the food chain doesn't end at the larval stage, of course. As adults, mosquitoes serve as equally nutritious meals for birds, bats, and spiders.
As much as we loathe them, mosquitoes represent a considerable biomass of food for wildlife on the lower rungs of the food chain. Their extinction, were it even achievable, would have an enormous adverse affect on the entire ecosystem.
Why do we have to exist? Earth would be fine with out us? But yes i feel your pain. Their so annoying, but its the food chain with out mosquitoes some animal that depends on mosquitoes will die and the animal that was dependent on eating the animal that was dependent on mosquitoes will die, ect. Really you can't wipe out any species without damaging life, but to keep mosquitoes away, spray your floor and perimeters with the original medicinal listerine. To stop the reaction and itchiness get a hot spoon and press it to the area. Thats all i got.