Thursday 10 May 2018

How do mosquitoes locate their victims?

1.Eyes:Mosquitoes use their eyes to locate their victims. research has shown that people wearing dark colour clothes like red, black, navy black etc are more likely to be easily located by the mosquitoes .
2. Blood type : people with blood group O  are to twice attractive to mosquitoes than those with Type A. most of people produce blood group specific secretions mosquito can detetect.
3. carbon dioxide : carbon dioxide is attractive to mosquitoes .they can sense carbon dioxide from a distance over 150 feet away.so more carbon dioxide one exhales,more attractive he/she is  to the mosquitoes .as we exhale carbon dioxide through nose therefore while sleeping or resting  there is more carbon dioxide around our head region.no surprise often  we hear  buzzing sound mosquito offer in our ears.
4. Body heat and sweat: Mosquitoes  can  also  detect  heat  of our body  and  sweat  also.  our sweat  contains  lactic acid, uric acid, ammonia  and some other compounds. the mosquitoes can sniff these compounds . So  sweaty peoples  are likely    to be more attractive  for the mosquito.  after strenous exercise  we  sweat more,  our body  emits more  heat . in such  state  we are more likely  to be attacked  by the mosquito.
5.Type of bacteria on skin .In one study,  humans were divided into those two groups. One group  that was  highly attractive to mosquitoes and other one with  those who were not.The attractive ones had more of certain microbes on their skin than the unattractive ones.
6.pregnancy:One study revealed that pregnant women are twice as attractive to Anopheles mosquitoes  as non-pregnant women.perhaps it was because women in late pregnancy exhaled 21 percent more volume of breath,hence more carbon dioxide  than non-pregnant women. Moreover, abdomens of pregnant women are about 1.25 fahrenheit  warmer than non pregnent women.
 7.beer.researchers found that significantly more mosquitoes come close to our body after drinking a 12-ounce beer.it was due to increased ethanol content in sweat and skin temperature after drinking beer)

No comments:

Post a Comment