Red Imported Fire Ants: Effects of Insect Growth Regulators on Caste Formation and Colony Growth and Survival1

1 February 1978

journal article
research article
Published by Oxford University Press (OUP) in Journal of Economic Entomology

Vol. 71 (1) , 75-78
https://doi.org/10.1093/jee/71.1.75

Abstract

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.

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