Nutritive Supplement Method to Evaluate Resistance of Natural or Preservative-Treated Wood to Subterranean Termites

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A bioassay for determining resistance of wood samples to Reticulitermes flavipes (Kollar) and R. virginicus Banks uses a small, measured amount of aspen wood sawdust as a nutritional supplement. Trials of this sawdust supplement method resulted in generally high termite survival (>75%) which, in turn, produced greater attack on resistance samples than normally occurs in termite assays. Block weight loss data thus could be used as the sole criterion for comparison of the relative resistance of different wood samples. Antitermitic properties were assessed with the supplement method for 2 oilborne and 2 waterborne preservatives and 21 different timbers. Except for a toxic effect by one of the oilborne preservatives, antitermitic properties of the preservatives and the natural woods were due primarily to repellency or feeding deterrency factors. The sawdust supplement method appears adaptable to any subterranean termite for assessment of wood resistance.

Document Type: Research Article

Publication date: June 1, 1977

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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