In a bioassay method developed to determine feeding preferences of neonate larvae of PectinoPhora gossypiella (Saunders), small plastic vials were filled with an agar solution and scaled with a thin plastic film that made it possible to see larval response to the agar surface in a 4-h test period. The larvae demonstrated a preferential feeding response to ethanol extracts of parts of the cotton plant. Most extracts were preferred over the control by at least 75% of the larvae. An extract of mature cotton seed meats was found to be a good source of feeding stimuli and also is inexpensive and readily available. A bait-virus formulation increased the prevalence of virus infection in pink bollworms in greenhouse tests. Other materials tested for larval feeding preference response included 4 carbohydrates and crude cottonseed oil. Cottonseed oil and sucrose were preferred over the control by 75% of the larvae.
Document Type: Research Article
Publication date: June 1, 1975
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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.