Journal of Economic Entomology (1996) 89, 1156-1160

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Nan-Yao Su and Rudolf H. Scheffrahn (1996)
Comparative effects of two chitin synthesis inhibitors, hexaflumuron and lufenuron, in a bait matrix against subterranean termites (Isoptera: Rhinotermitidae)
Journal of Economic Entomology 89 (5), 1156-1160
Abstract: Lethality, molting inhibitory effects, and feeding deterrence of 2 chitin synthesis inhibitors, hexaflumuron and lufenuron, were studied in a laboratory choice test using wood sawdust as feeding medium. Feeding deterrence of hexaflumuron in sawdust medium was lower than that observed in a previous study in which hexaflumuron-impregnated wooden blocks were used. The concentration threshold of hexaflumuron for feeding deterrence is high [>8,000 ppm for Coptotermes formosanus Shiraki, and ,4,000 ppm for Reticulitermes flavipes (Kollar)], whereas ~100% mortality was recorded 9 wk after exposure even at the lowest concentrations tested (125 ppm for C. formosanus and 31.3 ppm for R. favipes). Feeding deterrence of lufenuron was observed at lower concentration intervals (1,000-2,000 ppm and 50-100 ppm for C. formosanus and R. favipes, respectively) than hexaflumuron, but baits treated with the nondeterrent concentrations of lufenuron caused only 50-80% mortality, even after 9 wk of exposure. The overall potential of lufenuron as a bait toxicant is less than that of hexaflumuron.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Nan-Yao Su

Research topic(s) for pests/diseases/weeds:
control - general

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.

Coptotermes formosanus
Reticulitermes flavipes