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Rearing Douglas-Fir Tussock Moth Larvae on Synthetic Media

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A procedure was developed for rearing larvae of Douglas fir tussock moth, Hemerocampa pseudotsugataMcDun-nough, in large numbers on a synthetic medium for use laboratory testing of insecticides. The insect was reared from the egg stage generally to the fourth to seventh in-star, depending on testing needs. The larvae appeared normal in every way, reaching a weight of about 300 mg before pupation. An initial high loss from a nuclear polyhedrosis virus in the third instal was avoided by soaking the eggs in a 10% formaldehyde solution. Mortality during the larval stage on media was about 10%. Three thousand larvae were reared per week at a cost (excluding overhead) of about $15. At least 25,000 larvae could be reared weekly by I person working full time.

Document Type: Research Article

Publication date: June 1, 1966

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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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