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Development of Feeding Formulations for Boll Weevil: Effect of Ratios of Cottonseed Oil to Invert Sugar on Quantity Ingested and Initiation of a Feeding Response

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The importance of ratios of cottonseed oil to invert sugar in formulations of bait used against Anthonomus grandis Boheman was evaluated by determining the effect on weevil feeding responses and quantity ingested. Previous baits using water as a major quantity and occasionally with fumaric acid added were compared to the new baits. Addition of fumaric acid gave no clear improvement in either the percentage of the weevils that started to feed or in an increase in total amount eaten per feeding individual. The 100% oil bait had the greatest ingestion response and was equaled statistically by other high oil baits. The greatest difference between formulations was seen with initiation of feeding. The percentage of weevils that started to feed was positively correlated to increased concentrations of invert sugar. Therefore, the best field formulations must be a balance between the percentage of the population that can be induced to feed on the bait and the total amount eaten by an individual weevil when the pathogen or chemical must be eaten in order to kill the insect. The desired goal is that of getting enough of the population to eat a killing dose of the bait in order to produce an acceptable reduction of the population.

Document Type: Research Article

Publication date: June 1, 1976

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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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