A New Yeast Hydrolysate-Borax Bait for Trapping the Caribbean Fruit Fly1,2,3

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In Florida, baits of 3% hydrolyzed torula yeast + 4% borax premixed in water in invaginated glass traps proved 2-40 times as attractive as the standard (pellets of enzymatic cottonseed hydrolysate + borax) in water as a bait for Anastrepha suspense (Loew). In 2- to 4-week surveys, it caught 5-6.8 times more flies than the standard. and in I month (March) it caught flies in 5 counties, where the standard did not catch any. The new bait could be used for 14 days without replenishment and was not less attractive than 0- to 1-day old baits until after the 10th day. Also, the new bait, like most protein hydrolysates, caught 2 or more times as many females as. males. Traps containing the new bait were not competitive with one another for 5 days when they were used at a density of 10/acre, but some interaction occurred when they were used at a density of 25jacre. When the solid components of the bait were pelletized (1:1:33 ratio of yeast and borax) for convenience in handling, the catches were Y3 less the 1st week; when the pellets were made up with' a 1:2 ratio of yeast and borax, they were about 50% as effective. However, when the components were added dry (in loose form) to the trap before the water was added, the solution was as effective as the premixed solution.

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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