Effects of Low Temperatures on Three Embryonic Stages of the Codling Moth (Lepidoptera: Tortricidae)

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Base don mortality, the order of tolerance of three embryonic stages of codling moth, Cydia pomonella (L.), eggs for temperatures near O°C was red ring> white> blackhead. Red ring stage eggs were 1.5 times more tolerant of low temperature than were white stage eggs and 2.5 times more tolerant than blackhead stage eggs. Thirty-six to 42 d exposure was required for complete mortality on mature 'Red Delicious' or 'Golden Delicious' apples. Tolerance of low temperature was not affected by the apple variety used as the substrate for oviposition. Eggs deposited on a substrate other than apples, such as plastic film, were significantly more susceptible to the effects of low temperature. Exposure to low temperatures such as those commonly used for short- or long-term fruit storage shows promise as an alternative to fumigation as a treatment for codling moth eggs on apples and pears after harvest.

Document Type: Research Article

Publication date: October 1, 1989

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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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