What are the advantages and disadvantages of household pests?
The greatest advantage of pesticides is their ability to eliminate pests. However, pesticides also carry the risk of poisoning beneficial plants and animals. Some forms of pesticides even directly damage the environment.
What is the job of the spiracles on an insect?
The insect uses its spiracles to breathe through instead of their mouth.
The nipping's done with a proboscis, a sort of springy with a hollow needle formed by interlocking mouthparts and an outer sheath that rides up when the needle slides through your skin and probes for blood. But hitting the sweet spot isn't so easy -- ask any intern drawing blood from a patient for the first time. Or ask Jose Ribeiro, a medical entomologist at the National Institutes of Allergy and Infectious Diseases, who will gladly give you the gory details. "Less than 5 percent of skin is blood vessel, so the mosquito has to fish. It casts its proboscis back and forth under your skin, sawing through tissue and probing an area ten seconds at a time." After several such "search castings" and no luck, the insect withdraws completely and tries another patch of skin. But if it gets a good probe into one of your small blood vessels, it freezes and sucks from the hemorrhage, pumping in little spitballs of vessel dilators and blood thinners to keep its meal running freely. (An allergic reaction to mosquito drool is what produces those itchy red lumps, if you've wondered.) A mosquito can suck two to three times its weight in blood, no trouble. That's tantamount to a 150-pound human vacuuming up 300 to 450 pounds of food.
At this point, stretch receptors in the mosquito's hugely bloated abdomen, sensing emminent blowout, initiate an urgent message to the brain, saying in effect, "Whoa there, skeeter -- pull out!" It's a pretty mechanical reflex, apparently. You can get mosquitoes to quit feeding by pumping them up -- how can I put this delicately? -- from the other end, with saltwater enemas or air. Marc Klowden, the entomologist at the University of Idaho who did these insufflating experiments, also has videos showing what happens when you prevent the signal from the abdominal receptors from reaching the brain: too much is never enough for these mosquitoes, and they eat until they explode.
Even under normal circumstances, once a mosquito has eaten its fill, "it's so heavy it can barely fly," according to Ribeiro. Stuporous and swollen as a blimp, it looks for a place to lie low and do what anyone would do after going on the mother of all drinking binges -- it excretes like crazy. After a few hours the mosquito has reduced its blood meal by half into a supernutritious slush.
Thankfully, at any given time, in any population, less than half the mosquitoes are biters. That's because, first, only females are hematophagous (Greek for "blood eaters"). Males are sweet nectarloving loving types, peacefully sipping at nature's juice bar. Second, most females feed on blood only when they need the extra protein to finish making their eggs; for routine tine fuel they'll use plant sugars, too. In fact, feeding on blood seems a pretty well orchestrated event, dangerous enough that females have built-in controls to switch it on and off -- they don't seek out victims more than they have to. Remind yourself of this the next time you're being eaten alive. Things could be worse.
Which brings us back to that all-consuming question -- or rather, that question that consumes some of us more than others. How do mosquitoes get wind of their prey, and why are certain people more preferable than others? You know who you are. You're the ones who make backyard barbecues safe -- well, tolerable -- for the rest of us by acting as five bait, the folks who get fed on right through their cotton T-shirts. You're the ones whose mothers dabbed lotion on bites and cheerfully consoled: "You just have sweet blood."
Entomologists are a blunter lot: they labor in the service of science, not in the warm, fuzzy business of sparing our inner child. Mosquitoes, they tell us, use various cues to find food -- color contrast and movement, skin temperature and humidity. But above all, experiments show they're olfactory creatures. Floral scents help steer them to their nectar meals. And breath and body vapors draw them to their animal hosts, including you and me. For mosquitoes our vapor trail is a no-brainer. It says: Fly this way. Make a right. Eat here. Just do it.
Each time you breathe out and blow off carbon dioxide, you're telling mosquitoes (and other nasty biting insects like ticks) that there's a vertebrate, a handy blood container, in the vicinity. Mosquitoes have [CO.cub.2] receptors on little feelers called palpi and can detect a plume of the gas from about 50 feet away. This is bad news: there's a world of bloodsuckers waiting for you to exhale and no way you can hold your breath forever Matters aren't helped, either, by another vertebrate emanation of ours, a volatile chemical called lactic acid, which mosquitoes pick up on their bristly antennae. Humans exude this compound from their hands, from their faces and shoulders -- in fact, from just about every pore of their bodies, in secretions like oil and sweat made by skin glands. Lactic acid escapes from our mouths too, whenever we go in for any heavy-duty exercise. As it happens, some of us are quite a bit mom effusive than others.
Is BuzzOFF a Mosquito Control System?
"Yes, BuzzOFF is a mosquito control system designed to rid residential yards of unwanted mosquito pestilence. It mostly works by identifying the areas of your yard that are most likely to attract mosquito and consistently spraying them with a mosquito repellent."
Are mosquitoes born with diseases?
That is a good question! Mosquitoes do not die from the diseases they carry. Otherwise the would not get chance to transmit the diseases they carry.
Can HIV virus be destroyed by mosquitoes?
I think there must be some relations between mosquitoes and HIV virus because this virus cannot survive in the body of mosquitoes.There may be something that destroyed the virus in the mosquito's body.I think we should do research on the internal and external structure of the mosquito and its physiology.
Why do your mosquito bites get so big?
Mosquito bites can get big by scratching or if u are allergic and the more you are sensitive to the bites the more bigger they will get
Does potassium help avoid mosquitoes?
Potassium helps the body's digestions, Baygon helps the body avoid mosquitoes.
What is a mosquito net made of?
Mosquito nets may be made from cotton, polyethylene, polyester, or nylon..
What is a baby mosquito called?
=wala kami may nakit an nga answer ni catolico kundi kingdom,phylum,class kag order lang so ari o!!!!!!!!!!==kingdom-animalia,phylum-arthropoda,class-insecta,kag ari na lang gid ya ang amon last nga nabal an kag nakita ari na lang gani o ooooooooooooooooooo!!!!!!hibi na ko jokes lang a!!!!!==ari ay order-diptera=
On September 20, 2007, scientists mapped the genome or genetic content of Brugia malayi, worm which cause elephantiasis (lymphatic filariasis).
Elephantiasis generally results from obstructions of the lymphatic vessels. It is most commonly caused by a parasitic disease known as lymphatic filariasis.
Alternatively, elephantiasis may occur in the absence of parasitic infection. This nonparasitic form of elephantiasis, known as nonfilarial elephantiasis or podoconiosis, generally occurs in the mountains of central Africa. Nonfilarial elephantiasis is thought to be caused by persistent contact with volcanic ash
What does a mosquito do with human blood?
Only female mosquitoes acquire blood and they do this by first detecting carbon dioxide in the air and tracing this back to the warm blooded animal breathing this out.
When near the animal they are then attracted by the (infra red) heat of the animal and particularly warm blood vessels near the surface of the skin.
They land on the animal at this spot and push their needle like mouth parts (their proboscis) into the skin to this small blood vessel.
They then spit into the animal with a liquid that prevents the blood clotting (it is this spit that makes you itch) and suck up a little of the animals blood before withdrawing their mouth parts and flying off to make and lay eggs.
As science defines it, to be living, a thing must be capable of growth, reproduction and metabolism.
How long does a mosquito live once it gets in your house?
the female takes 3-100 days
the male takes 10-20 days
How long after a mosquito bite will a bump appear?
You will notice a bump within a few seconds after being bitten by a mosquito. The itching might not start for a few hours after you are bitten though.
How do you take away a mosquito bite?
What I do is i put some lotion on it, and then dont itch it! haha, but if you need too, then I would scratch in (like rub it) on the couch or something. I hope this kinda helps. . . Also ask your parents, they will tell you some stuff to do. (:
Rub one drop of ammonia into your skin where the bite is. Follow this with a drop of cortisone ointment rubbed in well. In less than an hour, you won't even be able to find where the bite was, much less feel it.
first things first,NEVER scratch it.yes,it's tempting,and yet very itchy.It's okay to lightly scratch but it will only get worse,no you won't die or get any serious injuries but you don't wanna end up with many scars like me.
When you got bitten by a mosquito, gently wash the bite area with water and soap, pat it dry instead of rubbing, keep it clean, (the almost impossible one) try NOT to scratch!
Then simply run hot water, as warm as you can stand, over the bite area for a few seconds, or use a hot washcloth. This will relieve the itching for many hours. The water should be quite hot (about 120 degrees F/ 48.8 degrees C, be careful not to scald the skin)
Gently rub some ivory soap over the bites to further take away the itch
Now ice the bites with ice cubes, an ice pack or even a can of cold soda (if you're outdoors) to keep the swelling down
There are many ways to treat mosquito bites, you just have to find the one that works for you
you can apply some oil or cream!
a mosquito does not bite dead people unless they are recently passed. the blood has to be flowing for a mosquito to bite.
Label the diagram of proboscis of butterfly?
Look at the head to label a diagram of a butterfly's proboscis. You need to label the spiral, straw-like shape on the head.
What can you put in standing water to kill mosquito larva?
You can purchase insecticides from your local hardware store that can be sprayed to kill mosquitoes and maintain their populations. If you have pets make sure that these products are safe to use before spraying.
Is there a natural way of getting rid of gnats and mosquitoes in your home?
Lemon and vinegar are natural methods by which flies and gnats can be eliminated. It is important to keep food in closed containers and remove crumbs and orts from counters and floors. Cleaning bathroom, kitchen, and pantry areas with lemon and vinegar leaves refreshing smells and serves as effective insect-dispersers.
How long is a mosquitos life span?
Generally a male mosquito will live for a week whereas a female mosquito can live up to a month.
Mosquitoes have spiracles, which are tiny tubes carrying air through their bodies. They do not have lungs like we do. They force air in and out through their bodies. They get oxygen like we do but do not breathe in the same manner.