, Volume 54, Issue 1, pp 3–7

Intraguild predation in biological control: consideration of multiple resource species

Forum paper

DOI: 10.1007/s10526-008-9154-0

Cite this article as:
Okuyama, T. BioControl (2009) 54: 3. doi:10.1007/s10526-008-9154-0


Theoretical models of intraguild predation (IGP) predict that IGP decreases the effectiveness of biological control while many empirical studies do not agree with this prediction. In this study, I discuss the importance of explicit consideration of multiple resource species that has been neglected in most theoretical IGP models. In the previous models of IGP, a single resource species represented the pest species. However, there are multiple resource species (e.g., multiple pest species or aggregates of pest and non-pest species) in real systems. This study shows that models with multiple resource species can predict a variety of outcomes including those consistent with the empirical observations. The explicit consideration of resource species is useful for the future development of theories in biological control.


Intraguild predationIGPModels

Copyright information

© International Organization for Biological Control (IOBC) 2008

Authors and Affiliations

  1. 1.Department of Ecology and Evolutionary BiologyRice UniversityHoustonUSA