Abstract
Abstract Psammaplin A and pentoxifylline, two chitinolytic enzyme inhibitors, were evaluated for their palatability, feeding deterrence, consumption, and subsequent mortality against the eastern subterranean termite, Reticulitermes flavipes (Kollar). Psammaplin A and pentoxifylline were incorporated into filter paper diets at 0.0375, 0.075, 0.15, and 0.3%, and 0.01, 0.02, 0.04, 0.08, and 0.21% active ingredient (w/w), respectively. The treated filter papers served as food source or bait for termite workers used in this study. No-choice and two-choice feeding bioassays assessed bait consumption, palatability, repellency, and biological activity over a period of 1 - 5 wk (no-choice assay) and 3 - 5 wk (two-choice assay) of feeding. Neither psammaplin A nor pentoxifylline treatment repelled eastern subterranean termite diet consumption (in both nochoice and two-choice feeding arenas) as feeding commenced on both diet types within 48 h. In no-choice feeding tests, diet consumption was significantly decreased ...
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