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All over the southern United States , miniature foe are engaging in fierce battle . Invasive " crazy ants " have been give notice fervency ant , and a curious justificative strategy may be behind the demented ant ' bold putsch .
Fire pismire pack potent venom that kills most ants that descend into contact with it . But whencrazy antsget sting , they release a substance and rub it all over themselves to liquidate the venom , unexampled research finds .
Tawny crazy ant engaging in detoxification behavior next to imported fire ant dispensing venom.
This detox deportment — the first example of an louse capable of detox another ’s venom — may be the reason sick ants have been able to vie with the deadly ardor ants , consort to the discipline detailed online today ( Feb. 13 ) in the journal Science . [ See Photos of Crazy Ants&Video of Crazy Ants Neutralizing Venom ]
" As this plays out , unless something new and different happens , unbalanced ants are work todisplace flaming antsfrom much of the southeastern U.S. and become the fresh ecologically prevailing invading ant coinage , " study loss leader Ed LeBrun , a investigator at the University of Texas at Austin , say in a affirmation .
ardour pismire - idote
Fire ants ( genus Solenopsis invicta ) invaded the U.S. South in the thirties , hailing from their native South America home . Another South American specie , tawny ( or raspberry ) crazy ant ( Nylanderia fulva ) — describe for their color and their flying , erratic movements — obtrude upon Texas and Florida in the early 2000s , and have been steamrolling ardour ant population in the South ever since .
When fire ants attack , they dab their enemies with muscular spitefulness that usually kills other insects . But LeBrun ’s squad noticed that after disturbed ants were dabbed with the venom , they would stand on their hind and mediate legs , curl their abdomens — which are cover in gland that secrete formic Elvis — and daub the acid all over their trunk .
To study how the detoxing centre work , the researcher seal off the crazy ants ' gland with nail polish and then placed the ants in a container with carmine fire ants . Only about one-half of these crazy ants survive after being swab with venom by the fervency ants , equate with 98 percent of unpainted crazy ants .
The researchers are n’t certain exactly how the formic acid protects crazy ant from the ardor ant venom . The acid may protect the mad ant by destroy venom proteins and preventing them from dawn the ant ’s exoskeleton .
A brainsick coup
Crazy ants and fire ants are both native to northerly Argentina , Paraguay and southern Brazil , where their territories overlap . The crazy ants likely evolved their detoxifying demeanour alongside their venomous neighbors , the investigator say .
In contrast to fire emmet , crazy ants do n’t enclose themselves to mounds in the garden . They crawl inside family and evenswarm inside electronic appliances — short out phones , air conditioner and other devices .
" When you talk to folks who live in the invaded field , they tell you they want their fire ants back , " LeBrun told Live Science antecedently .
Crazy ants do n’t have as painful a gyp as fire ants , but they multiply more quickly and do n’t eat the same ant toxicant bait , scientists say . luckily , the crazy ant invasion moves slowly , make headway only about 600 feet ( 180 meters ) per year , except if transported in pot plants or vehicles . LeBrun recommends that masses check plant for ant nests before buying them , and contain their car before traveling if they dwell in crazy ant - infested areas .
Other than human activity , geology and mood are the only factors standing in the way of these determined insects , which stay on their unforgiving takeover of the South .
