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Assistant Professor

  • Border, S., Piefke, T., Fialkowski1, R., Tryc, M., Funnell, T., DeOliveira, G. & Dijkstra, P.D. Color change and pigmentation in a color polymorphic cichlid fish. In press, Hydrobiologia
  • Tinghitella, R.M., Lackey, A.C.R., Martin, M., Dijkstra, P.D., Drury, J.P., Heathcote, R., Keagy, J., Scordato, E.S.C. & Tyers, A.M. (Reply). A major player need not be the only player in speciation: a response to comments on Tinghitella et al. In press, Behavioral Ecology 
  • Dijkstra, P.D., Preenen, P.T.Y., van Essen, H. 2018. Does blue uniform color enhance winning probability in Judo contests? In press, Frontiers in Psychology 
  • Dijkstra, P.D. & #Border, S.E. (Invited). 2018. How does male-male competition generate negative frequency-dependent selection and disruptive selection during speciation? Current Zoology 64:89-99.
  • Tinghitella, R.M., Lackey, A.C.R., Martin, M., Dijkstra, P.D., Drury, J.P., Heathcote, R., Keagy, J., Scordato, E.S.C. & Tyers, A.M. (Invited). 2018. On the role of male competition in speciation: A review and research agenda. In press Behavioral Ecology
  • Dijkstra, P.D., Maguire, S., Harris, R.M., Rodriguez, A., DeAngelis, R., Flores, S. & Hofmann, H.A. 2017. The melanocortin system regulates body pigmentation and social behaviour in the cichlid fish Astatotilapia burtoni. Proceedings of the Royal Society of London, Biological Sciences 284:20162838
  • Dijkstra, P.D., Pierotti, M.E.R., Seehausen, O. & Metcalfe, N.B. 2016. Metabolism, oxidative stress and territorial behaviour in a female colour polymorphic cichlid fish. Behavioral Ecology and Sociobiology 70:99-109.
  • Harris, R.M., Dijkstra, P.D. & Hofmann, H.A. 2014 Comparative promoter analysis of the pro-opiomelanocortin (pomc) gene family.General and Comparative Endocrinology 195:107-115.
  • Dijkstra, P.D., Verzijden, M.N., Metcalfe, N.B. & Hofmann, H.A. 2012. Divergent hormonal responses to social competition in closely related species of haplochromine cichlid fish. Hormones and Behavior  61: 518-526.
  • Dijkstra, P.D., Wiegertjes, G., Forlenza, M., van der Sluijs, I., Hofmann, H.A., Metcalfe, N.B. ​& Groothuis, T.G.G. 2011. The role of physiology in the divergence of two incipient cichlid species. Journal of Evolutionary Biology 24: 2639-2652.
  • Dijkstra, P.D., Lindström, J. Metcalfe, N.B., Hemelrijk, C.K., Brendel, M. Seehausen, O. & Groothuis, T.G.G. 2010. Frequency-dependent s​ocial dominance in a color polymorphic cichlid fish. Evolution 64: 2797-2807.
  • Dijkstra, P.D. & Preenen, P.T.Y. 2008. No effect of blue on winning contests in Judo. Proceedings of the Royal Society of London, Biological Sciences 275: 1157-1162.
  • Postdoctoral Researcher, the University of Texas at Austin, 2009-2012
  • Postdoctoral Researcher, University of Glasgow, Scotland, 2007-2009
  • Ph.D., University of Groningen, the Netherlands, 2006
  • B.S. & M.S., Wageningen University, the Netherlands, 2000
We are interested in the evolution of phenotypic diversity. More specifically, we study the role of physiology in color signaling, competition, and speciation. As the most diverse group of vertebrates, cichlids are an important model system in evolutionary biology. Furthermore, their complex yet tractable social behavior has also led to their widespread use as a model system in neuroethology. We are currently studying how stress during development influences to expression of fitness-related traits such as body pigmentation and aggressive behavior.

Specific areas of research interest include:
  • Behavioral Ecology
  • Animal Physiology
  • Endocrinology
  • Evolution

Courses Taught

  • Animal Physiology
  • Behavioral Ecology
  • Developmental Biology
  • Introductory Biology