House Crickets:1 Ovicidal Effect of Fenthion on Mortality and Cholinesterase Activity2

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Tests were undertaken to determine factors associated with mortality of eggs of Acheta domesticus (L.) dosed topically with fenthion in dimethyl sulfoxide (DMSO).

Factors tested were: interference with fluid uptake by DMSO, degree and timing of cholinesterase (ChE) activity inhibition, time of dosage, and penetration of pesticide through chorion. Death of eggs dosed 0, 1, or 2 days after oviposition was immediate, and due to effects of DMSO, When eggs were dosed 3 or more days after oviposition, death was delayed until just prior to hatching, and was correlated to low levels of ChE activity at that time. Mortality was highest with eggs dosed 3, 7, or 8 days after oviposition. Hypotheses are offered to explain high mortalities at those times.

Document Type: Research Article

Publication date: October 1, 1973

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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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