Auburn, Feb. 22 ---The mortal enemy of fire ants has gained a toehold in Alabama.
Whether this enemy ever manages to cause as much misery for the ants as it does in its native habitat in South America is anyone's guess. But one thing�s for sure: Heads are rolling all over Alabama, and scientists couldn't be happier.
The pinhead-sized predator, known as the phorid fly (pictured right), preys on the ants in the goriest manner imaginable. After a fly lays her eggs in a fire ant, the emerging larvae makes its way into the ant's head and then proceeds to eat out the inside of the head. Eventually, the head falls off and out comes a new fly small wonder why some people often refer to these predators as decapitating flies.
As the new generation emerges, the ghastly cycle of egg laying and decapitation begins again.
Phorid flies were first introduced to Alabama in 1998 as part of a regional project aimed at controlling fire-ant populations throughout the South.
The project is the brainchild of Dr. Samford Porter, a Florida-based USDA researcher who spent years
studying the phorid fly in South America.
Curiously, the first Alabama release of phorid flies, which took place in Talladega County in 1998, failed.
Nevertheless, Dr. L.C. "Fudd" Graham, coordinator of the Alabama Fire Ant Management Program,
Talladega County Agent Henry Dorough, and others involved with the project pressed on with grim determination.
Subsequent releases in Macon County in 1999 and Lowndes County in 2001 were successful. In both cases,
flies have been spotted well beyond their points of release.
"The flies in Macon County have spread over a 10- or 11-mile radius, which totals about a 380 square-mile area,
" recalls a beaming Graham.
In fact, the flies, in a manner of speaking, have come full circle, reaching the Auburn University campus
where they were first hatched and harvested prior to their release in nearby Macon County
a fact Graham learned while tailgating with friends during the Auburn-Alabama game.
"Some kids with our group started asking about the phorid flies, so we went down into the woods
near campus and began investigating some of the mounds for signs of the flies," he recalls with a chuckle.
"And there they were."
Meanwhile, farther west in Lowndes County, the flies have spread about 3 miles from their release point.
And in Talladega County, where Graham and Dorough first encountered so much difficulty, the flies seem to be flourishing.
Graham attributes this to the decision to release a different kind of phorid fly, known as Pseudacteon curvatus,
which appears to be more cold tolerant and better suited to the hybrid fire ants common in this region of the state.
So far only one fly has been found in Houston County following a release in fall of 2000,
although Graham is confident the flies eventually will gain a toehold.
In the meantime, Graham is planning additional releases in Baldwin County and possibly Walker County,
depending on the availability of the flies.
Fierce as they are, phorid flies will never succeed in wiping out fire ants entirely.
Instead, they make the ants' lives a living hell through constant attacks.
Mortally frightened by the flies, worker ants cower in their mounds and miss out
on the day-to-day foraging necessary for survival.
As food sources are depleted, fire ant populations begin dropping off.
Eventually, Graham and other experts hope to use the flies in tandem
with other control methods to keep ant populations at manageable levels.
The flies could be the best defense yet against imported fire ants, which escaped off a freighter
in Mobile Bay more than 60 years ago and began spreading throughout the South and Southwest.
첫댓글 어려을때 친구네 놀러갔다가 불개미떼를 보고 놀란적이 있었지요
그 후로 무서워서 그 친구네는 못가고
대신 우리집으로 오게 했던 기억이 납니다..
잘 읽었습니다^^
대단하네요! 사파타님 구글에다 Phorid Fly 쳐보니 Vimeo.com에서 올린동영상엔 그야말로 개미소굴을 융단 폭격하는 장면 !!!!
놀랍읍니다. 덕분에 많이 배웁니다. 알헨에오시면
RUTINI cabermet sauvignon Merlot 은 사야될것 같읍니다.하 하 하 !!!!
Phorid Fly 를 남미에서도 구할 수 있지 싶은 데요...단, 저 파리도 몇 종류 되는 데, 개미한테 알 놓는 놈으로
구해야 합니다. 한번 둘레 둘레 알아 보이소, 대학교 같은 데도 좋고..미국서 값을 알아 보니,
몇 마리 들은 줄도 모르는 데, 수 천불로 나와서리....직접 가서 잡아가, 살리가, 보낸다 캅니다..