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1 February 2013 Toxicity and Repellency of Compounds from Clove (Syzygium aromaticum) to Red Imported Fire Ants Solenopsis invicta (Hymenoptera: Formicidae)
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Abstract

The toxicity and repellency of the bioactive chemicals of clove (Syzygium aromaticum) powder, eugenol, eugenol acetate, and beta-caryophyllene were evaluated against workers of the red imported fire ant, Solenopsis invicta Buren. Clove powder applied at 3 and 12 mg/cm2 provided 100% ant mortality within 6 h, and repelled 99% within 3 h. Eugenol was the fastest acting compound against red imported fire ant compared with eugenol acetate, beta-caryophyllene, and clove oil. The LT50 values inclined exponentially with the increase in the application rate of the chemical compounds tested. However, repellency did not increase with the increase in the application rate of the chemical compounds tested, but did with the increase in exposure time. Eugenol, eugenol acetate, as well as beta-caryophyllene and clove oil may provide another tool for red imported fire ant integrated pest management, particularly in situations where conventional insecticides are inappropriate.

© 2013 Entomological Society of America
Lekhnath Kafle and Cheng Jen Shih "Toxicity and Repellency of Compounds from Clove (Syzygium aromaticum) to Red Imported Fire Ants Solenopsis invicta (Hymenoptera: Formicidae)," Journal of Economic Entomology 106(1), 131-135, (1 February 2013). https://doi.org/10.1603/EC12230
Received: 8 June 2012; Accepted: 1 September 2012; Published: 1 February 2013
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