Insectes Sociaux

, Volume 64, Issue 1, pp 169–171 | Cite as

Invasive fire ants contain high levels of mercury

  • J. A. HelmsIV.Email author
  • B. Tweedy
Short Communication


Mercury contamination is a serious environmental concern usually associated with aquatic food webs. We tested for the presence of mercury in winged queens and males of four ant species and found that invasive red imported fire ants (Solenopsis invicta) contain high levels of mercury typical of aquatic insects. Mercury concentrations in male fire ants were 51 % higher than those in females and 89–199 % higher than those in other ant species from the same location. Fire ant sexuals fly long distances on their mating flights and are a major food source for arthropod and vertebrate predators and may thus transfer mercury through food webs.


Invasions Mating flights Mercury Solenopsis invicta 



We thank Matthew Chumchal and Joseph Frederickson for assistance with mercury analyses. Eli Bridge, Aaron Godfrey and Tayna Ames helped collect specimens. This work was funded by a National Science Foundation Graduate Research Fellowship, University of Oklahoma Alumni Fellowship, University of Oklahoma Biological Station Graduate Summer Research Fellowship, and George Miksch Sutton Avian Research Scholarship to JAH.

Supplementary material

40_2016_514_MOESM1_ESM.pdf (113 kb)
Supplementary material 1 (PDF 112 kb)


  1. Cristol DA, Brasso RL, Condon AM, Fovargue RE, Friedman SL, Hallinger KK, Monroe AP, White AE (2008) The movement of aquatic mercury through terrestrial food webs. Science 320:335CrossRefPubMedGoogle Scholar
  2. Gerrard PM, St. Louis VL (2001) The effects of experimental reservoir creation on the bioaccumulation of methylmercury and reproductive success of tree swallows (Tachycineta bicolor). Environ Sci Technol 35:1329–1338CrossRefPubMedGoogle Scholar
  3. Helms JA IV, Godfrey AP (2016) Dispersal Polymorphisms in Invasive Fire Ants. PLoS One 11:e0153955CrossRefPubMedPubMedCentralGoogle Scholar
  4. Helms JA IV, Godfrey AP, Ames T, Bridge ES (2016a) Are invasive fire ants kept in check by native aerial insectivores? Biol Lett 12:20160059CrossRefPubMedGoogle Scholar
  5. Helms JA, Godfrey AP, Ames T, Bridge ES (2016b) Predator foraging altitudes reveal the structure of aerial insect communities. Sci Rep 6:286470CrossRefGoogle Scholar
  6. Hölldobler B, Wilson EO (1990) The ants. Belknap Press of Harvard University Press, CambridgeCrossRefGoogle Scholar
  7. Markin GP, Dillier JH, Hill SO, Blum MS, Hermann HR (1971) Nuptial flight and flight ranges of the imported fire ant, Solenopsis saevissima richteri (Hymenoptera: Formicidae). J Georgia Entomol Soc 6:145–156Google Scholar
  8. Migula P, Głowacka E, Nuorteva S, Nuorteva P, Tulisalo E (1997) Time-related effects of intoxication with cadmium and mercury in the red wood ant. Ecotoxicology 6:307–320CrossRefGoogle Scholar
  9. Morrill WL (1974) Production and flight of alate red imported fire ants. Environ Entomol 3:265–271CrossRefGoogle Scholar
  10. R Core Team (2012) R: A language and environment for statistical computing. R foundation for statistical computing. Accessed 31 May 2016
  11. Scheuhammer AM, Meyer MW, Sandheinrich MB, Murray MW (2007) Effects of environmental methylmercury on the health of wild birds, mammals, and fish. Ambio 36:12–18CrossRefPubMedGoogle Scholar
  12. Selin NE (2009) Global biogeochemical cycling of mercury: a review. Annu Rev Environ Resourc 34:43–63CrossRefGoogle Scholar
  13. Speir SL, Chumchal MM, Drenner RW, Cocke WG, Lewis ME, Whitt HJ (2014) Methyl mercury and stable isotopes of nitrogen reveal that a terrestrial spider has a diet of emergent aquatic insects. Environ Toxicol Chem 33:2506–2509CrossRefPubMedGoogle Scholar
  14. Trager JC (1988) A revision of Conomyrma (Hymenoptera: Formicidae) from the southeastern United States, especially Florida, with keys to the species. Fla Entomol 71:11–29CrossRefGoogle Scholar
  15. Tschinkel WR (1987) Fire ant queen longevity and age: estimation by sperm depletion. Ann Entomol Soc Am 80:263–266CrossRefGoogle Scholar
  16. Tschinkel WR (1988) Distribution of the fire ants Solenopsis invicta and S. geminata (Hymenoptera: Formicidae) in Northern Florida in relation to habitat and disturbance. Ann Entomol Soc Am 81:76–81CrossRefGoogle Scholar
  17. Tschinkel WR (2013) The fire ants. Belknap Press of Harvard University Press, CambridgeGoogle Scholar
  18. Tweedy BN, Drenner RW, Chumchal MM, Kennedy JH (2013) Effects of fish on emergent insect-mediated flux of methyl mercury across a gradient of contamination. Environ Sci Technol 47:1614–1619PubMedGoogle Scholar
  19. United States Environmental Protection Agency (1998) Method 7473: Mercury in solids and solutions by thermal decomposition, amalgamation, and atomic absorption spectrophotometry. Washington, DCGoogle Scholar
  20. Whitcomb BH, Bhatkar A, Nickerson JC (1973) Predators of Solenopsis invicta queens prior to successful colony establishment. Environ Entomol 2:1101–1103CrossRefGoogle Scholar
  21. Wojcik DP (1983) Comparison of the ecology of red imported fire ants in North and South America. Fla Entomol 66:101–111CrossRefGoogle Scholar

Copyright information

© International Union for the Study of Social Insects (IUSSI) 2016

Authors and Affiliations

  1. 1.Department of BiologyUniversity of OklahomaNormanUSA

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