A behavioral assay for measuring feeding deterrency of a slow-acting biocide, A-9248, against the Formosan subterranean termite (Isoptera: Rhinotermitidae)

IRG/WP 1366

N-Y Su, R H Scheffrahn

Concentration-dependent feeding deterrency of a slow-acting compound, A-9248 (diiodomethyl para-tolyl sulfone) was studied in a choice test against the Formosan subterranean termite, Coptotermes formosanus Shiraki. A-9248 was a feeding deterrent at concentrations ³8,000 ppm. Initially, Coptotermes formosanus fed on wood treated with 1,000-6,000 ppm A-9248 but learned to avoid the treatment as a result of ingesting sublethal doses of A-9248. Only those groups exposed to wood treated with <1,000 ppm continued feeding on the treated substrates, and ingestion of these concentrations resulted in 85-100% mortality at the end of the 4-week experiment.


Keywords: BEHAVIORAL ASSAY; FEEDING DETERRENCY; DIIODOMETHYL-P-TOLYLSULFONE; SLOW ACTING TERMITICIDE; TERMITES; A-9248; COPTOTERMES FORMOSANUS; ISOPTERA

Conference: 88-04-24/29 Madrid, Spain


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