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Effect of Malathion on the Production and Viability of Eggs of the Indian-Meal Moth1,2

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Plodia interpunctella (Hübner) deposited the greatest number of eggs about 9:00 PM each day. Exposure of the moths to malathion vapor and residue did not change this timing. Moths exposed to malathion deposited their greatest number of eggs on the 1st day, as opposed to the 3rd day for unexposed moths. The total number of eggs laid per female decreased as the malathion dosage increased. The egg-laying period of malathion-exposed moths was 4,-7 days, a sharp decrease from the 10- to 12- day period for unexposed moths. Few of the eggs laid after the 2nd day were viable.

Document Type: Research Article

Publication date: June 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.
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