Anthonomus grandis Boheman, infected with the protozoan Mattesia grandis McLaughlin, were more susceptible to lower doses of malathion, azinphosmethyl, DDT, or carbaryl as the numbers of protozoans multiplied in the weevils. Thus, the toxicity of all 4 insecticides to the weevils increased as the disease progressed, and by the 12th day postinfection, the LD50values had decreased 5- to 7-fold. Also, fat content of the infected weevils decreased as the disease progressed, and little or none remained at 12 days postinfection.
Document Type: Research Article
Publication date: February 1, 1970
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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.