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Emergence Rhythms of Adult Screw worms1,2

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Timing of emergence of adult Cochliomyia hominivorax (Coquerel) from puparia was found to be entrained within the larval stage of each generation if the larvae were reared with a regimen of 12 hours light:12 hours dark. However, the peak of emergence within the circadian cycle could be shifted from early morning to late afternoon by rearing a single generation with a regimen of 4 hours light:20 hours dark. The entrained circadian rhythm was unaffected by photo periodic regimens in the pupal stage. The periodicity of adult emergence appears to be induced early in larval development.

These findings are applicable to a sterile-male-release program.

Document Type: Research Article

Publication date: December 1, 1971

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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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