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Zombie Ants!
Topic Started: May 12 2009, 04:17 PM (152 Views)
George K
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Finally
Parasitic flies turn fire ants into zombies

It sounds like something out of science fiction: zombie fire ants. But it's all too real.

Fire ants wander aimlessly away from the mound.

Eventually their heads fall off, and they die.

The strange part is that researchers at the University of Texas at Austin and Texas A&M's AgriLife Extension Service say making "zombies" out of fire ants is a good thing.

"It's a tool — they're not going to completely wipe out the fire ant, but it's a way to control their population," said Scott Ludwig , an integrated pest management specialist with the AgriLife Extension Service in Overton , in East Texas .

The tool is the tiny phorid fly, native to a region of South America where the fire ants in Texas originated. Researchers have learned that there are as many as 23 phorid species along with pathogens that attack fire ants to keep their population and movements under control.

So far, four phorid species have been introduced in Texas .

The flies "dive-bomb" the fire ants and lay eggs. The maggot that hatches inside the ant eats away at the brain, and the ant starts exhibiting what some might say is zombie-like behavior.

"At some point, the ant gets up and starts wandering," said Rob Plowes, a research associate at UT.

The maggot eventually migrates into the ant's head, but Plowes said he "wouldn't use the word 'control' to describe what is happening. There is no brain left in the ant, and the ant just starts wandering aimlessly. This wandering stage goes on for about two weeks."

About a month after the egg is laid, the ant's head falls off and the fly emerges ready to attack any foraging ants away from the mound and lay eggs.

Plowes said fire ants are "very aware" of these tiny flies, and it only takes a few to cause the ants to modify their behavior.

"Just one or two flies can control movement or above-ground activity," Plowes said. "It's kind of like a medieval activity where you're putting a castle under siege."

Researchers began introducing phorid species in Texas in 1999. The first species has traveled all the way from Central and South Texas to the Oklahoma border. This year, UT researchers will add colonies south of the Metroplex at farms and ranches from Stephenville to Overton . It is the fourth species introduced in Texas .

Fire ants cost the Texas economy about $1 billion annually by damaging circuit breakers and other electrical equipment, according to a Texas A&M study. They can also threaten young calves.

Determining whether the phorid flies will work in Texas will take time, perhaps as long as a decade.

"These are very slow acting," Plowes said. "It's more like a cumulative impact measured across a time frame of years. It's not an immediate silver bullet impact."

The flies, which are USDA -approved, do not attack native ants or species and have been introduced in other Gulf Coast states, Plowes said. Despite initial concerns, farmers and ranchers have been willing to let researchers use their property to establish colonies. At the Texas and Southwestern Cattle Raisers Association in Fort Worth in March, Plowes said they found plenty of volunteers.
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Luke's Dad
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Emperor Pengin
I didn't see anything in there about them attacking and devouring the other ants, but it's still a start! :thumb:
The problem with having an open mind is that people keep trying to put things in it.
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Luke's Dad
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Emperor Pengin
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The problem with having an open mind is that people keep trying to put things in it.
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Piano*Dad
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Bull-Carp
Luke's Dad
May 12 2009, 04:27 PM
I didn't see anything in there about them attacking and devouring the other ants, but it's still a start! :thumb:
Quote:
 
The flies, which are USDA -approved, do not attack native ants or species...
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Aqua Letifer
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ZOOOOOM!
Luke's Dad
May 12 2009, 04:31 PM
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I cite irreconcilable differences.
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Mark
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HOLY CARP!!!
:sing:
I know an old lady who swallowed a fly,
I don't know why she swallowed the fly,
I guess she'll die.

I know an old lady who swallowed a spider,
That wriggled and jiggled and tickled inside her.
She swallowed the spider to catch the fly,
I don't know why she swallowed the fly,
I guess she'll die.

I know an old lady who swallowed a bird,
How absurd to swallow a bird!
She swallowed the bird to catch the spider,
That wriggled and jiggled and tickled inside her,
She swallowed the spider to catch the fly,
I don't know why she swallowed the fly,
I guess she'll die.

I know an old lady who swallowed a cat,
Imagine that, to swallow a cat!
She swallowed the cat to catch the bird,
She swallowed the bird to catch the spider,
That wriggled and jiggled and tickled inside her,
She swallowed the spider to catch the fly,
I don't know why she swallowed the fly,
I guess she'll die.

I know an old lady who swallowed a dog,
My, what a hog, to swallow a dog!
She swallowed the dog to catch the cat,
She swallowed the cat to catch the bird,
She swallowed the bird to catch the spider,
That wriggled and jiggled and tickled inside her,
She swallowed the spider to catch the fly,
I don't know why she swallowed the fly,
I guess she'll die.
I know an old lady who swallowed a goat,
Just opened her throat and swallowed a goat!
She swallowed the goat to catch the dog,
She swallowed the dog to catch the cat,
She swallowed the cat to catch the bird,
She swallowed the bird to catch the spider,
That wriggled and jiggled and tickled inside her,
She swallowed the spider to catch the fly,
I don't know why she swallowed the fly,
I guess she'll die.

I know an old lady who swallowed a cow,
I wonder how she swallowed a cow?!
She swallowed the cow to catch the goat,
She swallowed the goat to catch the dog,
She swallowed the dog to catch the cat,
She swallowed the cat to catch the bird,
She swallowed the bird to catch the spider,
That wriggled and jiggled and tickled inside her,
She swallowed the spider to catch the fly,
I don't know why she swallowed the fly,
I guess she'll die.

I know an old lady who swallowed a horse,
She's dead, of course!!
:sing:
___.___
(_]===*
o 0
When I see an adult on a bicycle, I do not despair for the future of the human race. H.G. Wells
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Frank_W
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Resident Misanthrope
But a horse is a horse of course of course... :whistle:
Anatomy Prof: "The human body has about 20 sq. meters of skin."
Me: "Man, that's a lot of lampshades!"
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Luke's Dad
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Emperor Pengin
Aqua Letifer
May 12 2009, 05:48 PM
Luke's Dad
May 12 2009, 04:31 PM
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Posted Image
The problem with having an open mind is that people keep trying to put things in it.
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Frank_W
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Resident Misanthrope
:hair: :lol2:
Anatomy Prof: "The human body has about 20 sq. meters of skin."
Me: "Man, that's a lot of lampshades!"
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