Comparative Study of Adjuvants for Increasing Mortality of Malathion-treated Black Carpet Beetles
Author: Butler, Linda
Source: Journal of Economic Entomology, Volume 67, Number 5, October 1974 , pp. 571-573(3)
Publisher: Entomological Society of America
Abstract:Nine adjuvants were tested for enhancement of mortality of malathion-treated Attagenus megatoma (F.). Malathion concentrations included 10, 1, 0.1, and 0.01% while adjuvant concentrations for most tests were maintained at 0.55%
Little or no enhancement was observed with 10 and 1% malathion with the addition of an adjuvant. In all treatments mortality occurred rapidly, approaching 100% at the end of 8 h. With 0.1% malathion, however, increased mortality was observed with the addition of each of the 9 adjuvants. The materials giving highest mortality levels at the end of 72 h were Regulaid® (93%), Tween® 80 (84%), Multi-Film X-77® (83%), and Triton® CS-7 (83%). Malathion alone (0.1%) gave 6% mortality during the same time-period.
Tests with Multi-Film X-77 showed that mortality enhancement progressively decreased with decreasing adjuvant concentrations. Even at 0.018%, however, beetle mortality was ca. 3 times higher than for malathion alone.
Document Type: Research Article
Publication date: October 1, 1974
- 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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