6 Things You May Not Know About Mosquito Bites Only the female mosquitoes feed on blood. Female mosquito mouthparts are highly adapted to feed on blood. They resemble a flexible needle that is pierced into the skin. Male mosquitoes are nectar feeders only. Your blood is used for reproduction. Female mosquitoes feed on blood and then use that blood meal and protein for egg production. Essentially, when you are bitten by a mosquito you are feeding the next generation of mosquitoes! Mosquito saliva goes undetected. When a female mosquito feeds, she is injecting saliva into the skin. This saliva acts as an anesthetic so the host doesn’t know they are being bitten, improving the chances of the mosquito escaping unscathed. Mosquito saliva also is an anticoagulant. The blood doesn’t clog their syringe-like mouthparts, allowing the blood to flow freely. Mosquito saliva causes the welt. When you have a raised welt and itchy sensation after a mosquito bites you, you are reacting to the saliva that has been injected into your skin. An anti-histamine cream can work wonders relieving the itch. Eggs can be found near water. A mosquito female can lay upwards of 200 eggs in her life and she must lay them in or near water. Once the eggs hatch, the larvae, known as wigglers, are filter feeders. They feed on small food particles in the water such as microorganisms, algae, bacteria – basically anything small enough to fit in their mouths. Unlike other aquatic organisms, mosquito larvae cannot breathe underwater – they lack gills. Mosquito larvae obtain oxygen using a siphon – a type of snorkel – that breaks the surface tension of the water surface. Larvae molt a total of 4 times before beginning the transformation to the adult stage. This transformation stage, known as the pupal stage or tumblers.