Zombie fire ant workers: Behavior controlled by decapitating fly parasitoids

Document Type

Article

Publication Date

5-1-2007

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. © 2007 Birkhäuser Verlag.

Publication Source (Journal or Book title)

Insectes Sociaux

First Page

150

Last Page

153

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