, Volume 44, Issue 2, pp 121–130 | Cite as

Governmental Provisions to Manage and Eradicate Feral Swine in Areas of the United States

  • Terence J. Centner
  • Rebecca M. Shuman


Feral swine (wild hogs) are one of the most widely distributed free-ranging mammals in the world. In the United States, feral swine serve as game animals for the sport of hunting in some areas, while they are nuisance species at other locations. Increasing feral swine populations creates negative impacts to growing crops, native plant communities, and wildlife. Feral swine can also serve as reservoirs for a number of bacterial and viral diseases that can infect wild animals, livestock, and humans. The US state governments are adopting statutes and regulations to reduce the growth and dispersal of feral swine populations. An analysis of these provisions suggests that while they seek to control feral swine populations, they are unlikely to provide any significant relief from damages to crops and native ecosystems. More localized reduction plans and a national disease control program are suggested to assuage damages being wrought by these invasive animals.


Feral swine Damage Disease Law Regulation Invasive species 



The research presented here is based on the work supported by the Cooperative State Research Education and Extension Service, the US Department of Agriculture Project No. GEO00684.


  1. Adams, C.E., B.J. Higginbotham, D.R. Rollins, R.B. Taylor, R. Skiles, M. Mapston, and S. Turman. 2005. Regional perspectives and opportunities for feral hog management in Texas. Wildlife Society Bulletin 33: 1312–1320.CrossRefGoogle Scholar
  2. Benjamin, L., E.R. Atwill, J. Jay-Russell, M. Cooley, D. Carychao, L. Gorski, and R.E. Mandrell. 2013. Occurrence of generic Escherichia coli, E. coli O157 and Salmonella spp. in water and sediment from leafy green produce farms and streams on the central California coast. International Journal of Food Microbiology 165: 65–76.CrossRefGoogle Scholar
  3. Caldwell County Feral Hog Task Force. 2013. Task Force announces details for feral hog bounty, food bank donations and additional feral swine management programs set for Caldwell and Hays County, TX. Lockhart, TX: Caldwell County.Google Scholar
  4. Campbell, T.A., and D.B. Long. 2009. Feral swine damage and damage management in forested ecosystems. Forest Ecology and Management 257: 2319-2326. Retrieved March 7, 2014, from
  5. Campbell, T.A., S.J. Lapidge, and D.B. Long. 2006. Using baits to deliver pharmaceuticals to feral swine in southern Texas. Wildlife Society Bulletin 34: 1184–1189.CrossRefGoogle Scholar
  6. Carson, R. 2013. “Boared” to death: Rooting out the feral hog issue in Texas. Texas Tech Administrative Law Journal 14: 421–444.Google Scholar
  7. CDC. 2009. Brucella suis infection associated with feral swine hunting—Three states, 2007–2008. Morbidity and Mortality Weekly Report 58: 618–621.Google Scholar
  8. Centers for Disease Control (CDC). Undated. Wild hog hunting. Atlanta: CDC. Retrieved March 7, 2014, from
  9. Center for Food Security and Public Health. 2009. Bovine Brucellosis: Brucella abortus. Ames, IA: Iowa State University. Retrieved March 7, 2014, from
  10. Commonwealth of Australia. 2006. Threat abatement plan for predation, habitat degradation, competition and disease transmission by feral pigs. Federal Register of Legislative Instruments F2005L02259.Google Scholar
  11. Corn, J.L., J.C. Cumbee, R. Barfoot, and G.A. Erickson. 2009. Pathogen exposure in freal swine populations geographically associated with high densities of transitional swine premises and commercial swine production. Journal of Wildlife Diseases 45: 713–721.CrossRefGoogle Scholar
  12. Dart, T. 2013. An ‘aporkalypse’ has Texas fighting losing battle against feral pig menace. The Guardian (UK), 22 Aug 2013.Google Scholar
  13. Eason, C.T., E.C. Murphy, S. Hix, and D.B. MacMorran. 2010. Development of a new humane toxin for predator control in New Zealand. Integrative Zoology 1: 31–36.CrossRefGoogle Scholar
  14. Elsey, R.M., E.C. Mouton Jr., and N. Kinler. 2012. Effects of feral swine (Sus scrofa) on alligator (Alligator mississippiensis) nests in Louisiana. Southeastern Naturalist 11: 205–218.CrossRefGoogle Scholar
  15. Engeman, R.M., A. Duffiney, S. Braem, C. Olsen, B. Constantin, P. Small, K.J. Dunlap, and J.C. Griffin. 2010. Dramatic and immediate improvements in insular nesting success for threatened sea turtles and shorebirds following predator management. Journal of Experimental Marine Biology and Ecology 395: 147–152.CrossRefGoogle Scholar
  16. Engeman, R.M., A. Stevens, J. Allen, J. Dunlap, M. Daniel, D. Teague, and B.U. Constantin. 2007. Feral swine management for conservation of an imperiled wetland habitat: Florida's vanishing seepage slopes. Biological Conservation 134: 440–446.Google Scholar
  17. Fogarty, E.P. 2007. National distribution of feral hogs and related stakeholder attitudes. M.S. Thesis, Mississippi State University, Mississippi State, 1–88.Google Scholar
  18. Hamrick, B., M. Smith, C. Jaworowski, and B. Strickland. 2011. A landowner’s guide for wild pig management: Practical methods for wild pig control. Mississippi State, MS: Mississippi State University Extension Service & Alabama Cooperative Extension System 1–44.Google Scholar
  19. Hayes, R., S. Riffell, R. Minnis, and B. Holder. 2009. Survival and habitat use of feral hogs in Mississippi. Southeastern Naturalist 8: 411–426.CrossRefGoogle Scholar
  20. Heger, T., A.T. Pahl, Z. Botta-Dukát, F. Gherardi, C. Hoppe, I. Hoste, K. Jax, L. Lindström, et al. 2013. Conceptual frameworks and methods for advancing invasion ecology. AMBIO 42: 527–540.CrossRefGoogle Scholar
  21. Higginbotham, B. 2013. Wild pig damage abatement education and applied research activities. Overton, TX: Texas A&M AgriLife Research and Extension.Google Scholar
  22. Holsman, R.H., J. Petchenik, and E.E. Cooney. 2010. CWD after “the fire”: Six reasons why hunters resisted Wisconsin’s eradication. Human Dimensions of Wildlife 15: 180–193.CrossRefGoogle Scholar
  23. Illinois Department of Natural Resources. 2013. Feral hogs in Illinois. Springfield, IL: Division of Wildlife Resources.Google Scholar
  24. Iowa Administrative Code. 2013. Chapter 77.Google Scholar
  25. Jay, M.T., M. Cooley, D. Carychao, G.W. Wiscomb, R.A. Switzer, L. Crawford-Miksza, J.A. Farra, D.K. Lau, et al. 2007. Escherichia coli O157:H7 in feral swine near spinach fields and cattle, central California coast. Emerging Infectious Diseases 13: 1908–1911.CrossRefGoogle Scholar
  26. Jay-Russell, M.T., A. Bates, L. Hardin, W.G. Miller, and R.E. Mandrell. 2012. Isolation of campylobacter from feral swine (Sus scrofa) on the ranch associated with the 2006 Escherichia coli O157:H7 spinach outbreak investigation in California. Zoonoses and Public Health 59: 314–319.CrossRefGoogle Scholar
  27. Kammermeyer, K., J. Bowers, B. Cooper, D. Forster, K. Grahl, T. Holbrook, C. Martin, S. McDonald, et al. 2011. Feral hogs in Georgia: Disease and control. Atlanta, GA: Georgia Department of Natural Resources.Google Scholar
  28. Koichi, K., A. Cottrell, K.K. Sangha, and I.J. Gordon. 2013. What determines the acceptability of wildlife control methods? A case of feral pig management in the Wet Tropics World Heritage Area, Australia. Human Dimensions of Wildlife: An International Journal 18: 97–108.CrossRefGoogle Scholar
  29. Krull, C.R., D. Choquenot, B.R. Burns, and M.C. Stanley. 2013. Feral pigs in a temperate rainforest ecosystem: Disturbance and ecological impacts. Biological Invasions 15: 2193–2204.CrossRefGoogle Scholar
  30. Lapidge, S., J. Wishart, L. Staples, K. Fagerstone, T. Campbell, and J. Eisemann. 2012. Development of a feral swine toxic bait (HOG-GONE) and bait hopper (HOGHOPPER) in Australia and the USA. In Proceedings of the 14th wildlife damage management conference, 19–24.Google Scholar
  31. Leiser, O.P., J.L. Corn, B.S. Schmit, P.S. Keim, and J.T. Foster. 2013. Feral swine brucellosis in the United States and prospective genomic techniques for disease epidemiology. Veterinary Microbiology 166: 1–10.CrossRefGoogle Scholar
  32. Mapston, M.E. 2004. Feral hogs in Texas. Texas A&M AgriLife Extension, B-6149, 1–27. San Antonio, TX: Wildlife Services.Google Scholar
  33. Morthland, J., and W. McSpadden. 2011. A plague of pigs. Smithsonian 42: 52–60.Google Scholar
  34. Musante, A.R., K. Pedersen, and P. Hall. 2014. First reports of pseudorabies and winter ticks (Dermacentor albipictus) associated with an emerging feral swine (Sus scrofa) population in New Hampshire. Journal of Wildlife Diseases 50: 121–124.CrossRefGoogle Scholar
  35. New Hampshire Revised Statutes Annotated. 2013. Sections 467:3, 467:5.Google Scholar
  36. New York Department of Environmental Conservation. 2013. Taking of free-ranging Eurasian boars and interference with department authorized eradication efforts. New York State Register XXXV: 4–5.Google Scholar
  37. New York Environmental Conservation Law. 2013. Section 11-0514.Google Scholar
  38. New Zealand Ministerial Panel. 2008. Managing numbers of deer, chamois, tahr and wild pigs. Hutt: New Zealand Ministerial Panel.Google Scholar
  39. Oklahoma Statutes. 2013. Title 2, section 6-614; Title 29, sections 4-107.2, 4-135.Google Scholar
  40. Olsen, S.C. 2010. Brucellosis in the United States: Role and significance of wildlife reservoirs. Vaccine 28S: F73–F76.CrossRefGoogle Scholar
  41. Pennsylvania Game Commission. 2013. Wildlife; Feral Swine and Wild Boar Eradication. 43 Pennsylvania Bulletin 2039. Meadville: Pennsylvania Game Commission.Google Scholar
  42. Pennsylvania Statutes Annotated. 2013. Section 2390.Google Scholar
  43. Pimental, D. 2007. Environmental and economic costs of vertebrate species invasions into the United States. In Proceedings of an international symposium on Managing Vertebrate Invasive Species, 2–8. Fort Collins, CO: USDA/APHIS Wildlife Services.Google Scholar
  44. Plasters, B.C., C. Hicks, R. Gates, and M. Titchenell. 2013. Feral swine in Ohio: Managing damage and conflicts. Ohio State University Extension W-26-13, 1–6. Columbus: Ohio State University.Google Scholar
  45. Queensland Department of Agriculture, Fisheries and Forestry. 2013. Class 2 Declared Animals. Brisbane. Retrieved March 7, 2014, from Accessed 07 March 2014.
  46. Queensland Parliamentary Council. 2013. Land Protection (Pest and Stock Route Management) Act 2002. Brisbane. Retrieved March 7, 2014, from
  47. Responsive Management/National Shooting Sports Foundation. 2008. The future of hunting and the shooting sports: Research-based recruitment and retention strategies, 1–261. Harrisonburg, VA: Responsive Management/National Shooting Sports Foundation. Retrieved March 7, 2014, from
  48. Seward, N.W., K.C. VerCauteren, G.W. Witmer, and R.M. Engeman. 2004. Feral swine impacts on agriculture and the environment. Sheep & Goat Research Journal 19: 34–40.Google Scholar
  49. Sharp, T. 2012a. PIG001: Trapping of feral pigs. Canberra: Department of Sustainability, Environment, Water, Population and Communities, Australian Government and Australian Bureau of Agricultural and Resource Economics and Sciences.Google Scholar
  50. Sharp, T. 2012b. PIG002: Aerial shooting of feral pigs. Canberra: Department of Sustainability, Environment, Water, Population and Communities, Australian Government and Australian Bureau of Agricultural and Resource Economics and Sciences.Google Scholar
  51. Sharp, T. 2012c. PIG003: Ground shooting of feral pigs. Canberra: Department of Sustainability, Environment, Water, Population and Communities, Australian Government and Australian Bureau of Agricultural and Resource Economics and Sciences.Google Scholar
  52. Sharp, T. 2012d. PIG004: Use of Judas pigs. Canberra: Department of Sustainability, Environment, Water, Population and Communities, Australian Government and Australian Bureau of Agricultural and Resource Economics and Sciences.Google Scholar
  53. Sharp, T. 2012e. PIG005: Poisoning of feral pigs with sodium fluoroacetate (1080). Canberra: Department of Sustainability, Environment, Water, Population and Communities, Australian Government and Australian Bureau of Agricultural and Resource Economics and Sciences.Google Scholar
  54. Sharp, T. 2013. GEN001: Methods of euthanasia. Canberra: Department of Sustainability, Environment, Water, Population and Communities, Australian Government and Australian Bureau of Agricultural and Resource Economics and Sciences.Google Scholar
  55. Sharp, T., and G. Saunders. 2012. Model code of practice for the humane control of feral pigs, 1–15. Canberra: Australian Department of Sustainability Environment, Water, Population and Communities.Google Scholar
  56. Shaw, A. 2013. Feral hogs uprooting sugar cane, rice fields, levees across south Louisiana. The Times-Picayune, 07 Dec. 2013.Google Scholar
  57. Siemann, E., J.A. Carrillo, C.A. Gabler, R. Zipp, and W.E. Rogers. 2009. Experimental test of the impacts of feral hogs on forest dynamics and processes in the southeastern US. Forest Ecology and Management 258: 546–553.CrossRefGoogle Scholar
  58. Texas Administrative Code. 2013. Title 31, section 65.152.Google Scholar
  59. Timmons, J.B., B. Alldredge, W.E. Rogers, and J.C. Cathey. 2012a. Feral hogs negatively affect native plant communities. Texas A&M AgriLIFE, SP-467. College Station, TX: Texas A&M University.Google Scholar
  60. Timmons, J.B., B. Higginbotham, R. Lopez, J.C. Cathey, J. Mellish, J. Griffin, A. Sumrall, and K. Skow. 2012b. Feral hog population growth, density and harvest in Texas. Texas A&M AgriLIFE, SP-472. College Station, TX: Texas A&M University.Google Scholar
  61. US Department of Agriculture (USDA). 2005. Feral/wild pigs: Potential problems for farmers and hunters. Agriculture Information Bulletin No. 799. Washington: USDA.Google Scholar
  62. US Department of Interior. 2013. 2011 National survey of fishing, hunting, and wildlife-associated recreation, 1–172. Washington: US Fish and Wildlife Service and US Department of Commerce.Google Scholar
  63. USDA 2012. National bovine brucellosis surveillance plan. Animal and Plant Health Inspection Service, Veterinary Services Centers for Epidemiology and Animal Health National Surveillance Unit, 1–22. Washington: USDA.Google Scholar
  64. USDA. 2013a. Feral swine: Damage and disease threats. Animal and Plant Health Inspection Service Program Aid No. 2086. Washington: USDA.Google Scholar
  65. USDA. 2013b. Environmental impact statement; feral swine damage management. Federal Register 78: 27937–27939.Google Scholar
  66. USDA. 2013c. United States Department of Agriculture Animal and Plant Health Inspection Service Feral Swine Damage Management Environmental Impact Statement Public Scoping Meeting, 149. Riverdale, MD: USDA. Retrieved March 3, 2014, from!docketDetail;D=APHIS-2013-0031.
  67. USDA. 2013d. 2012 Feral Swine Management Report. USDA Animal Plant Health Inspection Service and Wildlife Services. Riverdale, Washington: USDA.Google Scholar
  68. van Campen, H., and J. Rhyan. 2010. The role of wildlife in diseases of cattle. Veterinary clinics of North America: Food animal practice 26: 147–161.Google Scholar
  69. West Virginia Code. 2013. Section 20-2-5a.Google Scholar
  70. Wildlife Society. 2012. 2012 annual state summary report: Wild hog working group, 1–47. Bethesda, MD: Wildlife Society.Google Scholar
  71. Witmer, G.W., R.B. Sanders, and A.C. Taft. 2003. Feral swine—Are they a disease threat to livestock in the United States? Proceedings of the Wildlife Damage Management Conference 10: 316–325.Google Scholar
  72. Wyckoff, A.C., S.E. Henke, T.A. Campbell, D.G. Hewitt, and K.C. VerCauteren. 2012. Movement and habitat use of feral swine near domestic swine facilities. Wildlife Society Bulletin 36: 130–138.CrossRefGoogle Scholar

Copyright information

© Royal Swedish Academy of Sciences 2014

Authors and Affiliations

  1. 1.Warnell School of Forestry and Natural ResourcesThe University of GeorgiaAthensUSA

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