Skip to Search
Skip to Navigation
Skip to Content

Dr. Denis Roy
Assistant Research Professor
Department of Natural Resources & the Environment

University of Connecticut
U-4087, 1376 Storrs Road
Storrs, CT 06269-4087


Research Interests

My research aims to uncover how biodiversity develops, is maintained and how it can be lost from an evolutionary ecological perspective. Mostly, I focus on ecological forces shaping speciation events but also on how they can shape differentiation among populations within species and contribute to the evolution of both genotypic and phenotypic variants within populations. I’ve worked in many systems but have concentrated mainly on marine and freshwater fishes of economical or conservation concern. Click the link for more details.



Ph. D., 2006 University of Windsor
M.S., 1999

University of Windsor

B.Sc., 1996 Queen's University at Kingston


2014 - Present Assistant Research Professor, University of Connecticut

Research Associate, Great Lakes Institute for Environmental Research, University of Windsor

2009-2012 Post doctoral Fellow, Marine Gene Probe Laboratory, Department of Biology, Dalhousie University
2007-2009 Postdoctoral Researcher, Swiss Federal Institute for Aquatic Sciences & Technology (EAWAG) Centre of Ecology, Evolution and Biogeochemistry

Funding and Awards

  • Population structure of highly dispersed Greenland halibut (Fisheries and Oceans Canada, Dalhousie University: awarded to DE Ruzzante & D. Roy $53 800 CDN)
  • Biocomplexity of white hake in the Northwest Atlantic (Fisheries and Oceans Canada, Dalhousie University: Species At Risk Act: $10 000 CDN)
  • NSERC Industrial Post Doctoral Research & Development Fellowship 2007 (Independent: $60 000 CDN not used)
  • NSERC IPS-2 2001-2003 (University of Windsor/PT INCO tbk: $40 000 CDN)

  • Bristol-Myers Squibb 1997 (Buffalo State College, NY, USA: $3 000 US)


Selected Publications


  • Roy D, Seehausen O, Nosil P. 2013 Sexual dimorphism dominates divergent host plant use in stick insect trophic morphology. BMC Evol Biol 13,135 doi:10.1186/1471-2148-13-135.
  • Vonlanthen P, Bittner D, Hudson AG, Young KA, Müller R, Lundsgaard-Hansen B, Roy D, Di Piazza S, Largiader CR, Seehausen O. 2012 Eutrophication causes extinction by speciation reversal in replicate adaptive radiations. Nature 482(7385), 357-362 doi:10.1038/nature10824.
  • Roy D, Lucek KO, Bühler E, Seehausen O. 2010 Correlating shape variation with feeding performance to test for adaptive divergence in recently invading stickleback populations from Swiss peri-alpine environments. In: Morphometrics for Nonmorphometrician. (Elewa AMT ed.) Springer-Verlag. The Netherlands.
  • Seehausen O, Takimoto G, Roy D, Jokela J. Speciation reversal and biodiversity dynamics with hybridization in changing environments. Mol Ecol 17, 30-44.
  • Roy D, Paterson G, Hamilton PB, Heath DD, Haffner GD. 2007 Resource based adaptive divergence of Telmatherina in Lake Matano Indonesia. Mol Ecol 16, 35-48. doi: 10.1111/j.1365-294X.2006.03106.x
  • Roy D, Haffner GD, Brandt SB. 2004. Estimating fish production potentials using temporally explicit model. Ecol Model 173, 241-257.
Department of Natural Resources and the Environment
College of Agriculture and Natural Resources
University of Connecticut
1376 Storrs Road, Unit 4087
Storrs, Connecticut 06269-4087
Phone: 860-486-2840