DEET

Mosquitoes now developing resistance to DEET bug spray chemical

Wednesday, March 06, 2013 by: Ethan A. Huff, staff writer
Tags: mosquitoes, DEET, resistance

eTrust Pro Certified

Most Viewed Articles
Popular on Facebook
Malaysia Airlines Flight 370 now clearly a government cover-up: All evidence contradicts official story
White House admits staging fake vaccination operation to gather DNA from the public
EXCLUSIVE: Natural News tests flu vaccine for heavy metals, finds 25,000 times higher mercury level than EPA limit for water
Irrefutable proof we are all being sprayed with poison: 571 tons of toxic lead 'chemtrailed' into America's skies every year
Truvia sweetener a powerful pesticide; scientists shocked as fruit flies die in less than a week from eating GMO-derived erythritol
Russia taking McDonald's to court, threatens countrywide shutdown
Why does the CDC own a patent on Ebola 'invention?'
Senator who attacked Doctor Oz over dietary supplements received over $146,000 in campaign contributions from Big Pharma mega-retailer and Monsanto
Global warming data FAKED by government to fit climate change fictions
Oregon man serving prison sentence for collecting rainwater on his own property
HOAX confirmed: Michelle Obama 'GMOs for children' campaign a parody of modern agricultural politics
U.S. treating meat with ammonia, bleach and antibiotics to kill the '24-hour sickness'
Ebola outbreak may already be uncontrollable; Monsanto invests in Ebola treatment drug company as pandemic spreads
Ben & Jerry's switches to non-GMO, Fair Trade ice cream ingredients
Diet soda, aspartame linked to premature deaths in women
Elliot Rodger, like nearly all young killers, was taking psychiatric drugs (Xanax)
Right to farm being stripped from Americans: Michigan to criminalize small family farms with chickens, goats, honey bees and more
BREAKING: CDC whistleblower confesses to MMR vaccine research fraud in historic public statement
Delicious
(NaturalNews) Millions of Americans spray it on their bodies in the summertime to avoid getting mosquito bites, but the popular insect repellant chemical DEET appears to be going the way of antibiotics in losing its efficacy over time. A recent study published in the journal PLoS One reveals that mosquitoes are becoming increasingly less responsive to DEET, and are even now learning how to shut off their senses when exposed to it.

For their research, Dr. James Logan and his colleagues from the London School of Hygiene & Tropical Medicine studied the effects of DEET on the Aedes aegypti mosquito type, which is known to bite during the day and transmit deadly diseases like yellow fever and dengue fever. Dr. Logan and his team exposed the mosquitoes to small amounts of DEET, and tracked their behavior throughout the course of several hours.

What they observed is that, following three hours after exposure, many of the mosquitoes were no longer averse to DEET as they were during the first three hours. As it turns out, even minimal exposure to DEET resulted in the mosquitoes developing a type of immunity to the chemical, which was observed to no longer be effective beyond three hours after exposure.

"We think that the mosquitoes are habituating to the repellant, similar to a phenomenon seen with the human sense of smell also," explains Dr. Logan about his findings. "Our study shows that the effects of this exposure last up to three hours," he adds, noting that mosquitoes previously exposed to DEET eventually adapt to it, and are no longer affected by it.

It is believed that the sensory receptors of mosquitoes gradually shut down following exposure to DEET, which results in the creatures no longer being able to smell or sense it. As a result, these DEET-exposed mosquitoes are likely to return to human skin that has already been sprayed with DEET and try to tap it for blood, as if it had never been sprayed in the first place.

The findings build upon earlier research by Dr. Logan, which hypothesized a genetic factor that resulted in some mosquitoes not responding to DEET. As reported by Nature back in 2010, some mosquito types have actually evolved to overcome the intended effects of DEET, thanks to a dominant gene that is sometimes passed down through mosquito families.

"That there might actually be a gene lurking in the background in mosquitoes that causes DEET resistance is the single most surprising result," said Leslie Vosshall of Rockefeller University in New York City to Nature about the earlier study. "This hasn't really been reported before."

Sources for this article include:

http://www.medicalnewstoday.com/articles/256731.php

http://www.nature.com/news/2010/100503/full/news.2010.216.html

Join over four million monthly readers. Your privacy is protected. Unsubscribe at any time.
comments powered by Disqus
Take Action: Support NaturalNews.com by linking back to this article from your website

Permalink to this article:

Embed article link: (copy HTML code below):

Reprinting this article:
Non-commercial use OK, cite NaturalNews.com with clickable link.

Follow Natural News on Facebook, Twitter, Google Plus, and Pinterest

Colloidal Silver

Advertise with NaturalNews...

Support NaturalNews Sponsors:

Advertise with NaturalNews...

GET SHOW DETAILS
+ a FREE GIFT

Sign up for the FREE Natural News Email Newsletter

Receive breaking news on GMOs, vaccines, fluoride, radiation protection, natural cures, food safety alerts and interviews with the world's top experts on natural health and more.

Join over 7 million monthly readers of NaturalNews.com, the internet's No. 1 natural health news site. (Source: Alexa.com)

Your email address *

Please enter the code you see above*

No Thanks

Already have it and love it!

Natural News supports and helps fund these organizations:

* Required. Once you click submit, we will send you an email asking you to confirm your free registration. Your privacy is assured and your information is kept confidential. You may unsubscribe at anytime.