Cholinesterase Activity of Susceptible and Resistant Strains of Malathion-Poisoned German Cockroaches

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Inhibition of cholinesterase activity by organophosphates has generally been regarded as the most important primary lesion leading to the death of the intoxicated insects (O'Brien 1960). However, Oppenoorth (1958) observed no difference in the in vitro inhibition of brain cholinesterase activity of susceptible and resistant house flies, Musca domestica L. The present studies show correlation between the in vivo cholinesterase activity in the head of malathion-poisoned German cockroaches, Blatella germanica (L.), and the resistance to the insecticide.

Document Type: Research Article

Publication date: April 1, 1965

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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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