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Extension of the Incubation Period of Southwestern Corn Borer Eggs by Refrigeration

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Within tolerable limits, the rate of embryonic development in insects is in direct proportion to incubation tem- perature, at given levels of relative humidity. There is a marked lack of quantitative data in the literature concerning the effects of suboptimal temperatures within these limits on the hatching of fertile eggs of the the southwestern corn borer, Zeadiatraea grandiosella (Dyar). Eggs of this species may be obtained from moths emerging from field-collected pupae or from those reared from immaculate or summer-form larvae. However, since moth emergence and subsequent egg production are spread over several days, it is difficult to obtain sufficient numbers of eggs or young larvae of the same age for use in studies requiring large-scale manual infestations during a short span of days.

Document Type: Research Article

Publication date: April 1, 1965

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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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