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Health
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Title: Attack of the Urban Mosquitoes
Source: WSJ
URL Source: [None]
Published: Jul 20, 2011
Author: AATEKAH MIR
Post Date: 2011-07-21 12:00:46 by Prefrontal Vortex
Keywords: None
Views: 171
Comments: 14

Attack of the Urban Mosquitoes

Aggressive and Hard to Kill: Two Asian Cityslickers Swarm the East Coast

By AATEKAH MIR

The latest scourge crossing the country has a taste for the big city.

The Asian tiger mosquito, named for its distinctive black-and-white striped body, is a relatively new species to the U.S. that is more vicious, harder to kill and, unlike most native mosquitoes, bites during the daytime. It also prefers large cities over rural or marshy areas—thus earning the nickname among entomologists as "the urban mosquito."

"Part of the reason it is called 'tiger' is also because it is very aggressive," says Dina Fonseca, an associate professor of entomology at Rutgers University. "You can try and swat it all you want, but once it's on you, it doesn't let go. Even if it goes away, it will be back for a bite."

Dr. Fonseca is leading a U.S. Department of Agriculture effort to develop a cost-effective method to control the Asian tiger mosquito (Aedes albopictus) population. The university is currently focusing on using larvacides, which render larvae incapable of growing into adults.

Since urban areas tend to be warmer—often by 5 to 10 degrees—than rural areas, cities are seeing tiger mosquitoes earlier and sticking around longer, often into October.

"The Asian tiger mosquito arrived this year in June—three months earlier than last year," says Wayne Andrews, superintendent of the Bristol County Mosquito Control Project in Taunton, Mass.

The species has been traced to 1985, when a ship arrived in Texas loaded with used truck tires, perhaps from Japan, which is a major used-tire exporter, according to research by the Centers for Disease Control and Prevention. The eggs hatched when they were exposed to water. Since then, the species has made its way from Texas to Florida and up the East Coast, says Gary G. Clark, a research leader with the Agriculture Department. "Now, more than half of the states have this aggressive species," he says.

Another species imported from Asia is the rock pool mosquito (Aedes japonicus), which also came to the U.S. through the tire trade, experts say. This species is blackish-brown, with white scales on the lower part of its thorax and legs. It was first detected on Long Island, N.Y., and in areas of New Jersey in 1997, according to Dr. Fonseca. "Even though it is not as vicious a biter as the Asian tiger mosquito, it is a big pest," she says.

These urban mosquitoes are what entomologists call "container mosquitoes." Instead of marshes and natural bodies of water, both Asian tiger and rock pool mosquitoes can breed in small, artificial containers, such as tires, toys, cans and concrete structures. "A rule of thumb for container mosquitoes is: Water plus seven days equals mosquitoes," Dr. Fonseca says.

Weather patterns can help Asian tigers readily spread beyond the Northeast. "As a result of climate change, the summer lasts longer and arrives earlier," says Andrew Comrie, a climatologist at the University of Arizona. Eggs of Asian tiger and rock pool mosquitoes are also able to "overwinter," meaning they can survive a cold, dry climate—all they need is exposure to water in warmer temperatures.

The Asian tiger was responsible for transmitting more than 200 cases of dengue fever, a sometimes-fatal viral infection, in Hawaii in 2001-02. A similar (but less lethal) virus called chikungunya was transmitted in France and Italy, but no cases have been cited in the U.S. from the Asian tiger. Likewise, the rock pool mosquito is capable of transmitting the West Nile virus, but no cases have been traced to the species in the U.S., Dr. Fonseca says.

That does little to take the sting out of their bites. Irritation and itching are the body's allergic reaction to the protein secreted from the female mosquito when it bites.

Cities that spray for mosquitoes may find these latest breeds tough to tackle. "The usual methods of spraying cannot control the population of these species because their preferred breeding areas are difficult to reach," says Mr. Andrews, the Massachusetts mosquito-control agent.

Moreover, the optimum conditions for spraying are early evening, after these mosquitoes retire. Also, Dr. Fonseca, the Rutgers entomologist, explains that spraying kills only the adult mosquitoes and not the eggs or larvae.

To reduce the chances of getting bitten, remove containers that have standing water in them. The best personal protection comes from products that contain DEET. The chemical has been controversial, but "as long as you don't bathe in DEET or inhale too much of it, you should be fine," says Bruce Robinson, a clinical instructor of dermatology at Mount Sinai Hospital in New York. Since the tiger is a low-flying mosquito, keep ankles and legs covered. Also, the Asian tiger is a very visual mosquito, Dr. Fonseca says. "If you wear dark-colored clothes, you will be inviting it to bite you."


Poster Comment:

What price free tire trade?

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#1. To: Prefrontal Vortex (#0)

It also prefers large cities over rural or marshy areas—thus earning the nickname among entomologists as "the urban mosquito."

Sounds like a racist mosquito to me. Call Sharpton & Jackson, ASAP!

Jethro Tull  posted on  2011-07-21   12:04:00 ET  Reply   Trace   Private Reply  


#2. To: Prefrontal Vortex (#0)

What price free tire trade?

I believe a grocery store (Germany, maybe) was closed down for a while because a vicious, very vemonous spider hopped out of some bananas and scurried away.

They never found it.

"Authority has always attracted the lowest elements in the human race. All through history mankind has been bullied by scum. Those who lord it over their fellows and toss commands in every direction and would boss the grass in the meadow about which way to bend in the wind are the most depraved kind of prostitutes." – P.J. O'Rourke, "A Parliament of Whores"

Turtle  posted on  2011-07-21   12:05:58 ET  Reply   Trace   Private Reply  


#3. To: Jethro Tull (#1)

Sounds like a racist mosquito to me. Call Sharpton & Jackson, ASAP!

Negroes will claim it's a white conspiracies against the brothers.

"Authority has always attracted the lowest elements in the human race. All through history mankind has been bullied by scum. Those who lord it over their fellows and toss commands in every direction and would boss the grass in the meadow about which way to bend in the wind are the most depraved kind of prostitutes." – P.J. O'Rourke, "A Parliament of Whores"

Turtle  posted on  2011-07-21   12:06:50 ET  Reply   Trace   Private Reply  


#4. To: Turtle (#3)

Of course! Like the AIDS 'bug' that was created in a government lab by evil white scientists. What a bag of crackpots.

Jethro Tull  posted on  2011-07-21   12:12:16 ET  Reply   Trace   Private Reply  


#5. To: Prefrontal Vortex, All (#0)

deleted

The relationship between morality and liberty is a directly proportional one.

"Only a virtuous people are capable of freedom. As nations become corrupt and vicious, they have more need of masters." ~ Ben Franklin

"For my part, whatever anguish of spirit it may cost, I am willing to know the whole truth, to know the worst, and to provide for it.” ~ Patrick Henry

Eric Stratton  posted on  2011-07-21   13:11:47 ET  Reply   Trace   Private Reply  


#6. To: Jethro Tull, Turtle (#4)

deleted

The relationship between morality and liberty is a directly proportional one.

"Only a virtuous people are capable of freedom. As nations become corrupt and vicious, they have more need of masters." ~ Ben Franklin

"For my part, whatever anguish of spirit it may cost, I am willing to know the whole truth, to know the worst, and to provide for it.” ~ Patrick Henry

Eric Stratton  posted on  2011-07-21   13:12:34 ET  Reply   Trace   Private Reply  


#7. To: Jethro Tull (#1)

"As a result of climate change, the summer lasts longer and arrives earlier," says Andrew Comrie, a climatologist at the University of Arizona.

Does that guy sound like an Al Gore disciple to you?

Liberty is not a means to a higher political end. It is itself the highest political end.    Lord Acton

He (Gordon Duff) also implies that forcibly removing Obama, a Constitution-hating, on-the-down-low, crackhead Communist, is an attack on America, Mom, and apple pie. I swear these military people are worse than useless. Just look around at the condition of the country and tell me if they have fulfilled their oaths to protect the nation from all enemies foreign and domestic.
OsamaBinGoldstein

The only difference between genius and stupidity is that genius has it's limits. Albert Einstein

James Deffenbach  posted on  2011-07-21   13:23:31 ET  Reply   Trace   Private Reply  


#8. To: Eric Stratton (#5)

Does this remind anyone else of pig politicians!

LOL!

By Jove you've got it!!!

Jethro Tull  posted on  2011-07-21   13:41:26 ET  Reply   Trace   Private Reply  


#9. To: James Deffenbach (#7)

Does that guy sound like an Al Gore disciple to you?

Absolutely. One of the Legion of academic drones that have to be eliminated come the revolution.

Jethro Tull  posted on  2011-07-21   13:43:09 ET  Reply   Trace   Private Reply  


#10. To: Eric Stratton (#5)

bill gates was talking about some mosquito that gives vaccines. i wouldnt be surprised if this wasnt some hybrid cross-bred experiment plague hatched in a lab, or one of its precursers/ test run.

"Even to the death fight for truth, and the LORD your God will battle for you". Sirach 4:28

Artisan  posted on  2011-07-21   14:04:08 ET  Reply   Trace   Private Reply  


#11. To: Eric Stratton (#6)

But OJ was innocent

I know, I know, thank God that jury had the sense to let this obviously- innocent man go, so he could find the real killer!

"Authority has always attracted the lowest elements in the human race. All through history mankind has been bullied by scum. Those who lord it over their fellows and toss commands in every direction and would boss the grass in the meadow about which way to bend in the wind are the most depraved kind of prostitutes." – P.J. O'Rourke, "A Parliament of Whores"

Turtle  posted on  2011-07-21   14:28:11 ET  Reply   Trace   Private Reply  


#12. To: Artisan (#10)

deleted

The relationship between morality and liberty is a directly proportional one.

"Only a virtuous people are capable of freedom. As nations become corrupt and vicious, they have more need of masters." ~ Ben Franklin

"For my part, whatever anguish of spirit it may cost, I am willing to know the whole truth, to know the worst, and to provide for it.” ~ Patrick Henry

Eric Stratton  posted on  2011-07-21   15:54:41 ET  Reply   Trace   Private Reply  


#13. To: Turtle (#11) (Edited)

deleted

The relationship between morality and liberty is a directly proportional one.

"Only a virtuous people are capable of freedom. As nations become corrupt and vicious, they have more need of masters." ~ Ben Franklin

"For my part, whatever anguish of spirit it may cost, I am willing to know the whole truth, to know the worst, and to provide for it.” ~ Patrick Henry

Eric Stratton  posted on  2011-07-21   15:55:42 ET  Reply   Trace   Private Reply  


#14. To: Prefrontal Vortex (#0)

I have seen them worse, but they are pretty bad.
You can imagine what a banquet all that exposed skin at the nudist club is for mosquitoes.


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Once you go armadillo, you never go back.

Armadillo  posted on  2011-07-21   20:04:03 ET  Reply   Trace   Private Reply  


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