Page Banner

United States Department of Agriculture

Agricultural Research Service

Title: Competitive release as an ecological cause of stink bug outbreaks in transgenic Bt cotton in the southeast US)

Author
item Zeilinger, Adam
item Olson, Dawn
item Andow, Dave

Submitted to: Entomological Society of America Proceedings
Publication Type: Abstract Only
Publication Acceptance Date: 7/24/2008
Publication Date: 11/17/2008
Citation: Zeilinger, A.; Olson, D.M.; Andow, D. 2008. Competitive release as an ecological cause of stink bug outbreaks in transgenic Bt cotton in the southeast US. 2009 Entomological Society of America Meeting, Reno, Nevada

Interpretive Summary:

Technical Abstract: Insect-resistant transgenic Bt cotton has, in general, increased yield and reduced insecticide use in cotton production by successfully managing target pests. In the southeast US, Bt cotton provides effective control of Helicpverpa zea and Heliothis virescens [Lepidoptera: Noctuidae]. However Bt cotton has not eliminated all pest problems. Also in the southeast, outbreaks of stink bugs, particularly Nezara viridula and Euschistus servus [Hemiptera: Pentatomidae], on Bt cotton have become increasingly serious, requiring more insecticide sprays compared to non-Bt cotton. Such outbreaks represent significant risks in their potential to erode the economic and ecological benefits of Bt cotton. Understanding the ecological mechanisms driving stink bug outbreaks can improve attempts to predict outbreaks in countries considering the commercial release of Bt cotton. Though insecticide release is likely an important factor in stink bug outbreaks, we hypothesize that release from competition with the target pests also contributes to stink bug outbreaks. In this talk, we will present results from experiments designed to test the effect of interference competition on stink bug growth rate, feeding choice, and oviposition choice.

Last Modified: 04/22/2017
Footer Content Back to Top of Page