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Mechanically Removing Southwestern Corn Borer Pupae from Plastic Rearing Cups

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Abstract:

A machine was constructed for mechanically removing pupae of Diatraea grandiosella (Dyar) from 30-ml clear plastic rearing cups containing diet medium. The cups are split in half, and the parts and their contents are conveyed to a separator system where the pupae and small trash are remove from the larger trash. This machine is 96% effective in removing pupae. It operates at a speed of 1,400 cups/h, whereas the average worker can harvest pupae from ca. 400 cups/h by hand. Adult emergence from pupae removed with this machine was equal to that from pupae removed by hand. This machine was ca. 90% efficient for the fall armyworm, Spodoptera frugiperda (J. E. Smith), and the corn earworm, Heliothis zea (Boddie), pupae, as Well.

Document Type: Research Article

Publication date: April 1, 1982

More about this publication?
  • 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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