Sunday, March 19, 2023

Hogs and Fire Ants

 From Texas Monthly:

When Solenopsis invicta, a.k.a. the red imported fire ant, was first identified in East Texas, in the seventies, stakes were high. Since hitching a ride from Brazil to Alabama in a ship’s ballast a few decades earlier, the insects had resisted all efforts to slow their long march west. Experts predicted that they would wreak untold havoc on Texas’s ecosystem.

In response, counties set up quarantine areas that quickly doubled, then tripled, in size. The Texas Department of Agriculture doused more than half a million acres with a chemical called MV-678 that was supposed to render the next generation of fire ants sterile and lazy. (It did not.) Landowners drenched fire ants in diesel oil, convinced that this was an effective method for doing away with them. (It wasn’t.) The August 1988 cover of Texas Monthly declared the fire ant “Public Enemy #1.”

“People were geeked out about this,” said Robert Puckett, an entomologist at Texas A&M University who studies fire ants. “It was the first time we had an invasive ant species sweeping the state.” But it was hardly the only invasion of an unwanted visitor.

In the decades since the fire ant’s arrival, millions of feral hogs have stampeded across Texas, tearing up farmland and spreading disease. Zebra mussels have clogged our lakes and rivers. A beautiful green beetle, the emerald ash borer, has spent the past six or so years settling down in North Texas, where it will likely devastate the ash tree population. In the Gulf, the recent population explosion of the voracious lionfish has serious ramifications for our coral reefs. Spotted lanternflies, apple snails, sirex wood wasps, spongy moths, brown marmorated stink bugs, giant African snails—the list of unwelcome arrivals goes on and on. (Read more.)
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