how did mosquito penitrates  its hairlike object into human body for sucking blood?
352585
The adult mosquito is entirely terrestrial and is capable of flying long distances. Both females and males feed on nectars which they use for energy. Males and females mate during the first 3 to 5 days after they have emerged. Females mate only once. Males generally live for only a week. Only the females feed on blood, which is what is occurring when they are biting. Females evidently gain little nourishment from blood meals but need them in order to develop eggs. Many mosquitoes feed on any warm-blooded bird or mammal. However, some prefer cold-blooded animals. Some species also prefer birds and seldom feed on mammals, which is the case with Culex spp. mosquitoes which are known to transmit the West Nile virus (WNV). Unfortunately many species feed on a wide range of warm-blooded mammals and humans are often attacked. Once a female has completely engorged she flies to a shaded environment until her eggs are completely developed, usually 3 to 5 days. Once the eggs are developed the female is called a gravid female and she begins to search for a desirable place to lay her eggs. If a female survives her egg laying activities, she will very soon start searching for another blood meal after which she will lay another batch of eggs. She does not need to mate a second time. Generally a female will only live long enough to lay 1 to 3 batches of eggs. \n\nMost mosquito species are actively searching for a blood meal in the evening hours from just before dark until 2 to 3 hours after dark. During the daytime the females normally rest in cooler vegetated areas where the humidity is higher and they are protected from drying out. Females will often bite in the daytime if humans or animals invade the wooded areas where they are resting. However, Aedes albopictus is an aggressive biter which prefers to feed during the daylight hours and is often a nuisance in urban areas.
25812
Most female mosquitoes do not have the proper levels of protein produce viable eggs.  So, they drink blood in order to increase protein levels.  Male mosquitoes do not drink blood.
148152
There is no scientific evidence to support this. \nAccording to the U.S. Centers for Disease Control and Prevention (CDC), mosquitoes do not inject blood when they bite. As a result, mosquitoes do not transmit the virus. What they do inject is an itch-inducing saliva that acts as a lubricant to aid blood extraction, but it does not carry the virus.\n\nYellow fever and malaria can be transmitted through the saliva, but HIV does not reproduce in insects, so the virus doesn't survive in the mosquito long enough to be transmitted in the saliva.
335288
There are several hypotheses, one is that it the hair traps scent or pheromomes and may have been useful for attracting a mate in the past. Another is that it reduces friction when moving the arm.  Yet another is that it is just vestigial body hair.  Be interested to see what others suggest.\n\nRegards
893530
did you know that it's only female flies that bite you for your blood?\nmosquitos have very short lives, and the female mosquito uses its short life for the sole purpose of reproducing.\nthey need the blood as energy for her offspring and the nutrients from the blood to reproduce. \ni don't know if other bugs do that, they probably do, as there a lot of bugs in the world that we don't understand. \n\nhope this helps...
230500
HIV/AIDS doesn't spread by mosquito bites. epidemiologically, the incidence of HIV infection is the highest among the sexually active age group of 15 years to 49 years. however, mosquitoes bite persons of all age groups, and if they were a means of spreading HIV, the incidence of infection would be uniformly high among all age groups. HIV does not survive or replicate inside the intestine of the mosquito, which is another reason to believe that mosquitoes cannot spread the HIV infection. mosquitoes suck the blood of the individual they bite, but they do not suck blood from one and inject into another person.
617453
What’s the most dangerous creature on earth? Without question the answer is: the mosquito. Mosquitoes and the diseases they spread have been responsible for killing more people than all the wars in history. Even today, mosquitoes transmitting malaria kill 2 million to 3 million people and infect another 200 million or more every year. Tens of millions more are killed and debilitated by a host of other mosquito-borne diseases, including filariasis, yellow fever, dengue and encephalitis. \n\nBut for millions of Americans, malaria is something other people get somewhere else. The fact is that nearly half of the world’s population is at risk for malaria. Residents of the United States are not immune. Malaria has occurred in the United States, and still does on rare occasions. Mosquitoes capable of carrying and transmitting malaria still inhabit most parts of this country. And an influx of malaria-infected persons has produced localized malaria transmission in some areas of the United States. \n\nToday, however, the threat of developing encephalitis from mosquitoes is far greater than the threat of malaria in the United States. Encephalitis, meningitis and other diseases can develop from the bites of mosquitoes infected with certain viruses. These include the viruses of West Nile, St. Louis encephalitis, LaCrosse (California) encephalitis, and Eastern equine and Western equine encephalitis. \n\nMosquitoes belong to the group of insects known as diptera, or flies. In fact, mosquito means “little fly” in Spanish. Diptera means “two wings” – the characteristic that distinguishes flies from other types of insects. What distinguishes a mosquito from other types of flies are its proboscis (long tubular mouthparts for sucking up fluids) and the hair-like scales on its body. \n\nThe female mosquito’s life is often measured in weeks or months. Males typically live only about a week. The immature stages of the mosquito are less familiar to us. Mosquitoes hatch from eggs laid in places that are or will be filled with water. The eggs hatch into worm-like larvae that usually lie just beneath the water’s surface, breathe through tubes on the tail end of their bodies, and feed on microscopic organisms, such as bacteria. Thus most mosquito larvae require water containing organic material, such as leaves or sewage to serve as food for microorganisms that will be consumed by the developing mosquito larvae.\n\nIn less than a week, hatchling larvae can grow and develop into comma-shaped pupae. While larvae are commonly called “wigglers” because they wiggle violently when disturbed, mosquito pupae are known as “tumblers” because they tumble through the water when disturbed. While mosquito larvae and pupae breathe through siphon-like devices, the pupal stage does not feed. Usually within three days the pupa will transform into an adult mosquito. \n\nThere are some notable exceptions to the standard mosquito life cycle. The larvae of some mosquito species eat the larvae of other species, though the predatory larvae of some species will develop into blood-feeding adults. \n\nFemale mosquitoes can be particular about whose blood they consume, with each species having its own preferences. Most mosquitoes attack birds and mammals, though some feed on the blood of reptiles and amphibians. Only female mosquitoes bite, because a blood meal is usually required for egg laying. All male mosquitoes, and the females of a few species, do not bite. They feed on nectar and other plant juices instead of blood. \n\nVarious clues enable mosquitoes to zero in on people and other animals they seek to bite. They can detect carbon dioxide exhaled by their hosts many feet away. Mosquitoes also sense body chemicals, such as the lactic acid in perspiration. Some people are more attractive to mosquitoes than others. A person sleeping in a mosquito-infested room may wake up with dozens of mosquito bites, while the person sleeping next to them has none. Si
952887
There is no actual proof showing whether they do or don't transmit HIV.\n\nThe female mosquito requires blood to lay her eggs.  If she is interrupted in the process of withdrawing blood, she may land on a different source co-mingling the two different blood sources in her own body.  If she is interrupted, say swatted or squashed while she is still withdrawing blood, some of the blood she has already withdrawn that is inside her will likely will backwash into the current source.  That is how disease is spread.\n\nWhile we are told there are no known HIV transmissions in this manner, it is technically possible.
838679
You "could" get it at any time, not just in the morning.  Right now it is mainly in the India area but has been found in France too.  Jungle animals ( baboons) are the reservoir for it and it would primarily have to be a mosquito that bite one of the carrier animals that bit someone else and then a different mosquito would have to bite that person and then that mosquito would have to bite someone else.  So although it is not out of the question to get it, it will take some time for it to get here.    \n\n  but like i started out saying, it could be a bite at any time of day although mosquitoes usually are active at dawn and at dusk
1144144
It was already known that some people produce "come and get me" smells which appeal to the blood-suckers. \n\nRothamsted Research, in Herts, found those less likely to be bitten produced odours which masked these scents. \n\nThe natural repellent could be used to protect everyone from the bugs, suggests the Biotechnology and Biological Sciences Research Council.
1047246
the Penis is nothing more than a sponge and gets "hard" by filling with blood.  the same goes for a clitouris. so esentially you can get small amouts of blood transfer through a suction. also if you have any cuts or abraisons in your mouth the fluid exreted by a male or female can transmit this. Some STD's such as herpes only requiers skin contact
918241
The poison needs to get into the blood stream, it's actually safe to eat and they use it to kill parasites. I've seen a guy preparing darts then liking it off his fingers. After that they went hunting and the darned things killed monkeys in a few seconds.\n\nIt's also a bit like eating that blowfish sushi, you don't get enough poison in the bit you are eating to do you any harm.
803215
OK, HIV cant be transmitted thru mosquitoes cause first: HUMAN... it exists only in humans.  It cannot exist anywhere else.  Remember that when the virus is outside person (that is in the blood) it dies, and only "reactivates" when it comes in contact with blood again (eg an open wound).  Therefore It cant live in a mosquito, cause its not human.  The article below may help.\n\n\nInsects\n\nFrom the onset of the HIV epidemic, there has been concern about transmission of the virus by biting and bloodsucking insects. However, studies conducted by researchers at CDC and elsewhere have shown no evidence of HIV transmission through insects--even in areas where there are many cases of AIDS and large populations of insects such as mosquitoes. Lack of such outbreaks, despite intense efforts to detect them, supports the conclusion that HIV is not transmitted by insects.\n\nThe results of experiments and observations of insect biting behavior indicate that when an insect bites a person, it does not inject its own or a previously bitten person’s or animal’s blood into the next person bitten. Rather, it injects saliva, which acts as a lubricant or anticoagulant so the insect can feed efficiently. Such diseases as yellow fever and malaria are transmitted through the saliva of specific species of mosquitoes. However, HIV lives for only a short time inside an insect and, unlike organisms that are transmitted via insect bites, HIV does not reproduce (and does not survive) in insects. Thus, even if the virus enters a mosquito or another sucking or biting insect, the insect does not become infected and cannot transmit HIV to the next human it feeds on or bites. HIV is not found in insect feces.\n\nThere is also no reason to fear that a biting or bloodsucking insect, such as a mosquito, could transmit HIV from one person to another through HIV-infected blood left on its mouth parts. Two factors serve to explain why this is so--first, infected people do not have constant, high levels of HIV in their bloodstreams and, second, insect mouth parts do not retain large amounts of blood on their surfaces. Further, scientists who study insects have determined that biting insects normally do not travel from one person to the next immediately after ingesting blood. Rather, they fly to a resting place to digest this blood meal.
380731
The virus can not live in the mosquito's body.  If that were true there would be alot more HIV cases world wide
974908
First not enough blood is injested by the mosquito.\n\nSecondly,a mosquitos bite is actually two fold. \nThe first bite from one orifice injects a chemical/enzyme to stop the blood from clotting. This chemical is said to help neutralize the disease, this is what makes us itch from the bite. \nThen thru a different orifice the mosquito sucks a very, very small amount of blood and this blood is broken down inside the mosquito's body for food. The enymes of the mosquito make it impossible foir the HIV to live inside the mosquito.
1031987
when the mosquito bites, their proboscis (the straw-like feeding device) penetrates the skin up to the subcutaneous layer of the skin beneath the dermis. When this happens, an inflammation occurs. The basophilic and mast cells (type of white blood cell) is stimulated to release HISTAMINE which contracts the smooth muscles. Since WBC uses glucose as source of energy, lactic acid is produced from glucose. Lactic acid plus the contraction of the smooth muscles plus interleukin produced by WBC gives you the ITCHINESS. The increased flow of blood in the area causes REDNESS and increase plasma concentration causes SWELLING. \n\nAnd thats how a mosquito bite itch.
1079324
Mosquitoes are principally nectar feeders with only the females requiring a meal of blood.  This is because the females require protein for egg development, and since the normal mosquito diet consists of nectar and fruit juice, which has no protein, most must drink blood. Males differ from females, with mouth parts not suitable for blood sucking.\n\nThe females of blood sucking species locate their victims primarily through scent. They are extremely sensitive to the carbon dioxide in exhaled breath, as well as several substances found in sweat. Some people seem to attract mosquitoes more than others. Empirical studies of mosquito bites suggest that the risk of being bitten follows an approximately negative binomial distribution. Being male, being overweight, and having type 'O' blood may increase the risk of being bitten. Mosquitoes can detect heat, so they can find warm-blooded mammals and birds very easily once they get close enough.\n\nTips on how to avoid mosquito bites:\n\n1.  removal of standing water\n2.  use of repellants\n\nMosquito repellents generally contain one of the following active ingredients: DEET, Catnip oil extract, nepetalactone, citronella, or eucalyptus oil extract. Often the best "repellent" is a fan or gentle breeze as mosquitoes do not like moving air.\n\nOther popular methods of household mosquito control include use of small electrical mats, mosquito repellent vapour, and mosquito coil, all containing a form of the chemical allethrin. Mosquito repellent candles containing Citronella oil is another method to keep mosquitoes at bay. Some lesser known methods use the cultivation of plants like wormwood or sagewort, lemon balm, lemon grass, lemon thyme and the mosquito plant (Pelargonium) which act against mosquitoes. However scientists have determined that these plants are effective only when the leaves are crushed and used.\n\nThere are several widespread theories about mosquito control such as the assertion that Vitamin B, in particular B1 Thiamine, garlic, ultrasonic devices, incense, bats, purple martins and bug zappers can be used to repel or control mosquitoes. Whether these methods are effective at deterring mosquitoes or significantly reducing mosquito populations remains disputed. Moreover, some manufacturers of "mosquito repelling" ultrasonic devices have been found to be fraudulent.\n\nAlthough bats can be prodigious consumers of insects, many of which are pests, less than 1% of a bat's diet will consist of mosquitoes; bats mostly feed on larger insects such as beetles. Bats are known carriers of rabies, so care must be taken if attempting to use bats to control insects. Similarly, bug zappers kill a wide range of flying insects including many beneficial insects as well as mosquitoes; bug zappers are not effective at controlling mosquito populations.\n\nSome newer mosquito traps, like Coleman' Mosquito Deleto or The Mosquito Magnet emit a plume of carbon dioxide together with other mosquito attractants such as chemical scents, warmth, water vapor and sounds. By mimicking a mammal, these factors draw female mosquitoes toward the trap, where they are typically sucked into a net or holder where they collect. According to the American Mosquito Control Association, "these devices will, indeed, trap and kill measurable numbers of mosquitoes," but their effectiveness in any particular case will depend on a number of factors such as the size and species of the mosquito population and the type and location of the breeding habitat. The relative effectiveness of these newer mosquito traps is still being studied.\n\nSimple remedy on mosquito bites:\n\nThe itchiness of mosquito bites is often treated with calamine lotion, which may have a soothing effect, although its effectiveness is not medically proven. Other insect bite relief sticks such as After Bite are commercially available. Oral or topically applied antihistamines, and diphenhydramine in particular,