Seeking to curtail Formosan termites.

Discoveries by a team of researchers from Louisiana State University, Baton Rouge, could lead to control of the Formosan termite. They have identified certain chemical traces that are essential to the insects well-being. By manipulating these chemicals. the scientists hope to halt or slow the termite's steady advance. The Formosan termite is the most destructive in the world and the only one in the U.S. that voraciously eats living trees.

Termites use chemicals for many things, explains Gregg Henderson, an associate professor in LSU's Agricultural Center. "We have found some chemicals that increase the amount termites eat, others which they use to control the fungus in their nests, and others which they use to find food. When termites go back to the nest after finding food, they dab their abdomens to the ground, making a chemical trail for others to follow."

With their new knowledge of the biochemistry of termites, the scientists will begin by making improved baits using a volatile substance that will radiate the chemical attractant, luring termites. Another chemical will stimulate their feeding on the bait, which will be laced with a slow-acting toxin. The toxin will permit termites to bring poisoned food back to the nest for...