Comparative Toxicity of Some Phosphoramidothioates and Phosphoramidates to Susceptible and Acaricide-Resistant Strains of Tetranychus pacificus and Panonychus citri1, 2
Authors: JEPPSON, LEE R.; JESSER, MILTON J.; COMPLIN, JOHN O.
Source: Journal of Economic Entomology, Volume 57, Number 6, December 1964 , pp. 878-881(4)
Publisher: Entomological Society of America
Abstract:The comparative toxicity of a p-chlorophenyl, some 2,4- dichlorophenyl and about 55 homologous 2,4,5-trichlorophenyl phosphoramidothioates and phosphoramidates to susceptible and acaricide-resistant strains of Tetranychus pacificus McGregor and Panonychus citri (McGregor) were investigated. The 2,4,5-trichlorophenyl was the only series sufficiently toxic to the resistant strains to be of interest. Of the alkoxy homologues of this series, the isopropyl substitutions resulted in the most toxic compounds to both the susceptible and resistant strains of both mite species, and the propyl and butyl substitutions resulted in the least toxic compounds of the series. Compounds resulting from the alkylamido substitutions to the phosphoramidothioates decreased in toxicity to T. pacificus as the length of the substitution chain increased. The chain length of the alkylamido homologues did not decrease the toxicity of the resulting phosphoramidatc compounds to either mite. The phosphoramidates were as toxic and frequently more toxic than their phosphoramidothioate analogue.
Document Type: Research Article
Publication date: December 1, 1964
- 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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