Effect of Soil Water Content on Toxicity of Fipronil Against Solenopsis invicta


  • Yi-Juan Xu South China Agricultural University




Solenopsis invicta, Contact powder, Soil water content, Mortality rate, Persistent effect


This study evaluated the effect of Fipronil on the survival of fire ant workers with different doses and soil water contents and further examined the persistent effect of the same dose of powder at 10%, 50% and 90% soil water content. The results showed that mortality was positively correlated to the dosage. This result indicated that the survival rates of workers treated  by powder at different RS W (Relative soil water content) were significantly different (P <0.01). At the RS W of 10% and 20%, the survival rates of workers were 40.67 and 49.00 respectively, which showed no obvious difference from other treatments but were lower than the control. The survival rate decreased sharply when the RS W was 90%, and was obviously lower than that of treatments at moderate (30-50%) RS W. The contact powder showed worst persistent effect when the soil water content was 10%, but at the soil water content of 50% and 90%, the lethal effect of the powder was higher and was more persistent.


Download data is not yet available.


Appel, A.G. & L.G. Woody 1990. Individual mound treatment for rapid control of fire ants, pp. 248-251. In: Bode, L.E., J.L. Hazen & D.G. Chasin [eds.], Pesticide formulations and application systems, AST M ST P 1078, vol. 10. Philadelphia, PA.

Banks, W. 1990. Chemical control of the imported fire ants. Applied myrmecology, ment of crabs. Office of Research and Development Report EPA-600/3-76-007. US EPA, Washington, DC 596-603.

Barr, С.L. & R. Best 2003. Comparison of different formulations of broadcast fipronil for the control of red imported fire ants. Result Demonstration Handbook 1999-2003, Tex. Ag. Extension Serv, Bryan, TX.

Chen, J. 2006. Digging Behavior of Solenopsis invicta Workers When Exposed to Contact Insecticides. Journal of Economic Entomology 99:634-640.

Collins, H. & A. Callcott 1998. Fipronil: an ultra-low-dose bait toxicant for control of red imported fire ants (Hymenoptera: Formicidae). Florida Entomologist 407-415.

Drees, B.M., C.L. Barr, S.B. Vinson, R.E. Gold, M.E. Merchant & N. Riggs 2000. Managing imported fire ants in urban areas. Tex. Agric. Ext. Serv. B 6043.

Gentz, M. 2009. A review of chemical control options for invasive social insects in island ecosystems. Journal of Applied Entomology 133, 229-235.

Greenberg, L., D. Reierson & M.K. Rust 2003. Fipronil trials in California against the red imported fire ant, Solenopsis invicta Buren, using sugar water consumption and mound counts as measures of ant abundance. Journal of agricultural and urban entomology 20, 221-233.

Hadley, N.F. 1994. Water relations of terrestrial arthropods. Academic Press, San Diego, CA.

Kafle, L., W. Wenjer, R.K. Meer, H. Yiyou & S. Chengjen 2009. Microencapsulated bait: does it work with red imported fire ants, Solenopsis invicta (Hymenoptera: Formicidae)? Sociobiology 53, 729-737.

Kafle, L., W.J. Wu & C.J. Shih 2010. A new fire ant (Hymenoptera: Formicidae) bait base carrier for moist conditions. Pest management science 66(10):1082-1088.

Krushelnycky, P.D., L.L. Loope & N.J. Reimer 2005. The ecology, policy, and management of ants in Hawaii. Proceedings of the Hawaiian Entomological Society 37: 1-25.

Levy, R., J. Carroll, Y. Chiù & W. Banks 1974. Toxicity of Chemical Baits against the Red Imported Fire Ant, Solenopsis Invicta. Florida Entomologist 155-159.

Porter, S.D. 1988. Impact of temperature on colony growth and developmental rates of the ant, Solenopsis invicta. Journal of Insect Physiology 34, 1127-1133.

Porter, S.D. 1992. Frequency and distribution of polygyne fire ants (Hymenoptera: Formicidae) in Florida. Florida Entomologist 248-257.

Porter, S.D. & W.R. Tschinkel 1987. Foraging in Solenopsis invicta (Hymenoptera: Formicidae): effects of weather and season. Environmental Entomology 16, 802-808.

Sparks, B. & S. Diffie 1998. Evaluation of broadcast treatments of fipronil for control of red imported fire ants in Georgia, pp. 159-162. I:n Shanklin, D. (ed), Proceedings Imported Fire Ant Research Conference, Hot Springs, AR.

Stimac, J.L., R.M. Pereira, S.B. Alves & L.A. Wood 1993. Mortality in laboratory colonies of Solenopsis invicta (Hymenoptera: Formicidae) treated with Beauveria bassiana (Deuteromycetes). Journal of economic entomology 86, 1083-1087.

Williams, D.F. 1983. The development of toxic baits for the control of the imported fire ant. Florida Entomologist 66 162-172.

Zhuang, T.Y., W.J. Tian, X.N. Li, C.X. Wang , S.H. Wu & L. Wang 2007. Efficacy of pyragne in controlling the red fire ant, Solenopsis invicta. Chinese Bulletin of Entomology 44: 746-748.

Zhao, J., P.S. Zhong, T. Huang & S.S. Zhang 2009. Impact of precipitation on behavior of Solenopsis invicta Buren colony. Chinese Journal of Vector Biology and Control 20:542-544.

Zeng, L., Y.Y. Lu, X.F. He, W.Q. Zhang & G.W. Liang 2005. Identification of red imported fire ant Solenopsis invicta to invade mainland China and infestation in Wuchuan, Guangdong. Chinese Bulletin of Entomology 42: 44-48.




How to Cite

Xu, Y.-J. (2014). Effect of Soil Water Content on Toxicity of Fipronil Against Solenopsis invicta. Sociobiology, 59(2), 521–529. https://doi.org/10.13102/sociobiology.v59i2.615