Eight age groups of eggs of Plodia interpunctella (Hübner) were collected and incubated at 27°C and 60% relative humidity for 0.5 to 71 hours. The same eggs were then exposed to 2.4°C and 85% relative humidity for 0 to 192 hours to explore the possibility of delaying hatching and to examine larval survival from such eggs. Less than 50% of the eggs under 4.5 hours old hatched after 2-hour exposure to the cold. Slightly more than50% of the eggs older than 17.5 hours hatched after exposure of 96 hours. None of the eggs exposed for 192 hours at 2.4°C hatched. Survival was greater than 70% for larvae hatched from eggs that were returned to 27°C after exposure, except for those hatched from eggs 17.5 hours or more old at initiation of cold exposure and exposed for 96 hours or more.
Document Type: Research Article
Publication date: August 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.