Red Imported Fire Ants: Effects of Insect Growth Regulators on Caste Formation and Colony Growth and Survival

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Fourteen of 26 insect growth regulators (IGRs) administered in peanut butter bait to large laboratory colonies of Solenopsis invicta Buren caused a shift in caste differentiation with the result that worker brood production ceased and production of alate forms, most deformed wings, increased. Also, 8 of the compounds caused one or more colonies to die: AI3-36206 (1-(S-methoxy-4,8-dimethylnonyl)-4-(I-ethylethyl) benzene) caused 15 of 20 treated colonies to die; and A13- 36093 (1 - (8-ethoxy-4,8-dimethylnonyl) -4- (1- methylethyl) benzene) and AI3-35477 (JH-25) (E) -1-[ (7-ethoxy-3,7- dimethyl-2-octenyl) oxy]-4-ethylbenzene or (E) -1-[ (7-eth- oxy-3,7-dimethyl-2-octenyl)oxy]-4-ethylbenzene) caused 3 of 4 and 6 of 9 colonies, respectively, to die.

Document Type: Research Article

Publication date: February 1, 1978

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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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