Journal of Economic Entomology (1995) 88, 1343-1348

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Nan-Yao Su, Rudolf H. Scheffrahn and Paul M. Ban (1995)
Effects of sulfluramid-treated bait blocks on field colonies of the Formosan subterranean termite (Isoptera: Rhinotermitidae)
Journal of Economic Entomology 88 (5), 1343-1348
Abstract: Wooden boards impregnated with sulfluramid were nailed together with boards treated with acetone to form a block for placement in selected monitoring stations of 3 colonies of the Formosan subterranean termite, Coptotermes formosanus Shiraki, in Hallandale, FL. Under this choice-test condition, sulfluramid-treated boards initially accepted by termites were later avoided. When sulfluramid concentration was reduced, differences in feeding between-sulfluramid-treated boards, and boards treated with acetone only became insignificant, indicating nonpreferential feeding by the same population at the reduced toxicant concentration. Feeding deterrence was detected even for the reduced toxicant boards in later months for some colonies. We hypothesized an associative learning by C. formosanus to avoid feeding on the treatments. The 12-mo baiting with sulfluramid-treated blocks reduces foraging populations of the treated colonies by 52-86%. Without additional baiting, all populations substantially recovered in later years. It is suggested that lethal time (time required to kill) of a bait toxicant must be dose independent to be delivered to the majority of the population using a feeding medium.
(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 U.S.A. (SE)