Stuart A. Campbell, Postdoctoral Fellow

Department of Ecology and Evolutionary Biology
University of Toronto
25 Willcocks Street
Toronto, Ontario, Canada
M5S 3B2

Office: Earth Science Building 2044, 416-978-7177
E-mail: sa.campbell “at”
Other website:



  Ph. D.
  M. Sc.
  B. Sc.

  Cornell University
  Simon Fraser University
  Simon Fraser University

 Current Position

  EEB Postdoctoral Fellow   Department of Ecology and Evolutionary Biology, University of Toronto
  Project: Coevolution of plant mating systems and defence using genomic and experimental field studies of natural selection
  (Coadvised by Spencer Barrett & Stephen Wright)


I am interested in plant trait evolution, and in the complex ecological interactions (e.g., herbivory, pollination) that drive and in turn respond to this evolution. Currently, I am investigating co-evolutionary and ecological feedbacks between reproduction and defence. My recent research has been examining how mating system variation within and among species plays a significant role in the expression and evolution of defence phenotypes; I have also tested how antagonistic ecological interactions such as herbivory can alter selection on reproductive traits by influencing pollinators and by modulating the strength of inbreeding depression in the field.

For my current postdoctoral projects, I am addressing several questions related to these novel, coevolutionary interactions, including: 1) Do mating system transitions influence selection on defence genes? 2) Can patterns of polymorphism across the defence-related genome of plants be used to infer the mechanisms by which mating systems shape the micro and macroevolution of non-reproductive traits? 3) Does contemporary natural selection on reproductive and defensive phenotypes correspond to molecular estimates of historical selection? 4) What role have parasites played in the evolution or maintenance of other aspects of reproductive variation in plants (e.g., floral polymorphism)?

I am addressing these questions using a combination of evolutionary genomics and ecological field studies of wild Brassicaceae (mustards). The mustard family is an interesting family in which to examine these interactions because it exhibits striking variation in defence-related secondary metabolites (e.g. glucosinolates), has undergone repeated transitions from obligate outcrossing (self-incompatibility) to increased inbreeding (self-compatibility), and includes model species for the genetic basis of many defence and reproductive traits.



Campbell, S.A. and A. Kessler. (2013) Plant mating system transitions drive the macroevolution of defence strategies. Proceedings of the National Academy of Sciences U.S.A. (PNAS) 110(10): 3973-3978

Campbell, S.A., J.S. Thaler and A. Kessler. (2013) Plant chemistry underlies herbivore-mediated inbreeding depression in nature. Ecology Letters 16(2): 252-260.

Chautá-Mellizo, A.*, S.A. Campbell, M. Argenis Bonilla, J.S. Thaler, K. Poveda (2012) Effects of natural and artificial pollination on fruit and offspring quality. Basic and Applied Ecology 13(6): 524-532

Parachnowitsch, A.L., C.M. Caruso, S.A. Campbell, and A. Kessler (2012) Lobelia siphilitica plants that escape herbivory in time also have reduced latex production. PLoS One 7(5): e37745.

Campbell, S.A. and J.H. Borden (2009) Additive and synergistic integration of multimodal cues of both hosts and non-hosts during host selection by woodboring insects. Oikos 118(4): 553-563.

Stinson, K.A., S.A. Campbell, J.R. Powell, B.E. Wolfe, R.M. Callaway, G.C. Thelen, S.G. Hallett, D. Pratti, and J.N. Klironomos (2006) Invasive plant suppresses the growth of native tree seedlings by disrupting belowground mutualisms. PLoS Biology 4(5): 727-731

Campbell, S.A. and J.H. Borden (2006) Close-range, in-flight integration of visual and olfactory information by a host-seeking bark beetle. Entomologia Experimentalis et Applicata 120(2): 91-98.

Campbell, S.A., and J.H. Borden (2006) Integration of visual and olfactory cues of hosts and non-hosts by three bark beetles (Coleoptera: Scolytidae). Ecological Entomology 31(5): 437-449.

Campbell, S.A., and J.H. Borden (2005) Bark reflectance spectra of conifers and angiosperms: implications for host discrimination by coniferophagous bark and timber beetles. Canadian Entomologist 137(6): 719-722.

* denotes undergraduate coauthor