Immobilization of the codling moth, Laspeyresia pomonella (L.), during treatment or necessary holding periods has become a routine procedure at the Yakima laboratory. Prior to 1966, immobilization of these insects, mass-reared and sterilized by gamma irradiation for subsequent release, was achieved by CO2. However, White et al. (1970) showcd some deleterious effects using CO2 and none from chilling alone to adult longevity or mating. However, in their tests they used 20-min exposures (approximate time required for sterilization). We now need to use considerably longer periods of immobilization (to 24 hr) for our present and planned holding procedures. The present test was conducted to determine whether chilling for as much as 24 hr damaged the moths.
Document Type: Research Article
Publication date: April 16, 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.