Insectes Sociaux

, Volume 54, Issue 2, pp 150–153

Zombie fire ant workers: behavior controlled by decapitating fly parasitoids

Authors

    • Department of Entomology, 404 Life Sciences BuildingLouisiana State University Agricultural Center
  • S. J. Johnson
    • Department of Entomology, 404 Life Sciences BuildingLouisiana State University Agricultural Center
Research article

DOI: 10.1007/s00040-007-0924-y

Cite this article as:
Henne, D.C. & Johnson, S.J. Insect. Soc. (2007) 54: 150. doi:10.1007/s00040-007-0924-y

Abstract.

Laboratory observations were conducted on four separate red imported fire ant, Solenopsis invicta, colonies that contained workers parasitized by the decapitating fly, Pseudacteon tricuspis. Parasitized S. invicta workers remained inside the nest during parasitoid larval development and left the nest approximately 8 – 10 hours before decapitation by the parasitoid. When parasitized ants left the nest, they were highly mobile, were responsive to tactile stimuli, and showed minimal defensive behavior. Ants ultimately entered into a grass thatch layer, where they were decapitated and the fly maggots pupariated. This study reveals that parasitized ants exhibit behaviors that are consistent with host manipulation to benefit survival of the parasitoid.

Keywords:

Solenopsis invicta Pseudacteon tricuspis host manipulation host behaviour parasitoid

Copyright information

© Birkhäuser Verlag, Basel 2007