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Patrick D. Lorch

Assistant Professor

  • PhD, Zoology, University of Toronto, 2000
  • MS, Zoology, University of Maryland, 1992
  • BS, Biology, University of Notre Dame, 1986
Courses Taught

  • Evolution
  • Behavioral Evolution
  • Life on Planet Earth
  • Lab Experience in Biology

Research Interests

My research focuses on how natural selection and sexual selection interact. Specifically, I am interested in how natural selection on traits that are closely related to fitness (life history traits) affects the strength of sexual selection and visa versa. To explore how these two kinds of selection interact, I use both lab and field experiments along with theory and computer simulations.       

I am currently studying how nutritional ecology and social interactions affect both insect movement and mating behavior. I am also currently studying whether sexual selection can explain pervasive patterns of sex differences in rates of recombination during meiosis.           

For more detailed and up to date information, see my lab website.
Selected Papers (see lab website for more)

Robert B. Srygley, Patrick D. Lorch. 2013. Coping with uncertainty: nutrient deficiencies motivate insect migration at a cost to immunity. Integrative and Comparative Biology. Advance Access Online edition.

Darryl T. Gwynne, Patrick D. Lorch. 2013. Mating failures as a consequence of sexual selection on females. Entomologia Experimentalis et Applicata. 146: 3-10.

Justin L. Reeves, Patrick D. Lorch. 2011. Visual active space of the milfoil weevil, Euhrychiopsis lecontei Dietz (Coleoptera: Curculionidae). Journal of Insect Behavior. 24: 264-273.

Robert B. Srygley, Patrick D. Lorch. 2011. Weakness in the band: Nutrient-mediated trade-offs between migration and immunity of Mormon crickets Anabrus simplex. Animal Behaviour. 81: 395-400.

Sepideh Bazazi, C.C. Ioannou, S.J. Simpson, G.A. Sword, C.J. Torney, Patrick D. Lorch, and I.D. Couzin. 2010. The social context of cannibalism in migratory bands of the Mormon cricket. PloS one. 5:e15118.

Justin L. Reeves, Patrick D. Lorch. 2009. Visual plant differentiation by milfoil weevils (Euhrychiopsis lecontei Dietz; Coleoptera: Curculionidae). Journal of Insect Behavior. 22: 473-476.

Robert B. Srygley, Patrick D. Lorch, Stephen J. Simpson and Gregory A. Sword. 2009. Immediate protein dietary effects on movement and the generalized immunocompetence of migrating Mormon crickets Anabrus simplex (Orthoptera: Tettigoniidae). Ecological Entomology. 34: 663-668.

Patrick D. Lorch and Maria R. Servedio. 2007. The evolution of conspecific gamete precedence and its effect on reinforcement. Journal of Evolutionary Biology.

Stephen J. Simpson, Gregory A. Sword, Patrick D. Lorch and Ian D. Couzin. 2006. Cannibal crickets on a forced march for protein and salt. Proceedings of the National Academy of Sciences of the United States of America. 103: 4152-4156.

Patrick D. Lorch, Gregory A. Sword, Darryl T. Gwynne and Gerald A. Anderson. 2005. Radiotelemetry reveals differences in individual movement patterns between outbreak and non-outbreak Mormon cricket populations. Ecological Entomology. 30: 548-555.

Patrick D. Lorch and Maria R. Servedio. 2005. Postmating-prezygotic isolation is not an important source of selection for reinforcement within and between species in Drosophila pseudoobscura and D. persimilis. Evolution. 59 (5): 1039-1045.

Patrick D. Lorch. 2005. Sex differences in recombination and mapping adaptations. Genetica. 123 (1-2): 39-47. (Also reprinted in The Genetics of Adaptation. 2005 Rodney Mauricio, editor. Kluwer, Dordrecht.)

Gregory A. Sword, Patrick D. Lorch and Darryl T. Gwynne. 2005. Migratory bands give crickets protection. Nature. 433: 703.

Scholarly, Creative & Professional Activities
Research Areas
  • Behavioral and evolutionary ecology of insect mating behavior, group formation, movement, and sexual selection.
  • Evolution of sex differences in meiotic recombination rates.
Patrick D. Lorch
Department of Biological Sciences
Center for Ecology and Natural Resources Sustainability
F2013: TR 1-2:30, W 2-3:30
Phone: 330-672-7888
Spring 2014
  • BSCI 10003 - 001 Lab Experience In Biology
  • BSCI 40195 - 018 St : Biological Data Analysis
  • BSCI 40196 - 009 Individual Investigation
  • BSCI 40520 - 001 Behavioral Evolution
  • BSCI 40600 - 025 Writing In Biological Sciences
  • BSCI 50520 - 001 Behavioral Evolution
  • BSCI 50522 - 001 Readings Behavioral Evolution
  • BSCI 60198 - 003 Research
  • BSCI 60299 - 008 Thesis Ii
Summer 2014
  • BSCI 60198 - 008 Research
  • BSCI 60299 - 006 Thesis Ii
Fall 2014
  • BSCI 10003 - 001 Lab Experience In Biology
  • BSCI 40163 - 001 Organic Evolution
  • BSCI 40600 - 010 Writing In Biological Sciences
  • BSCI 50163 - 001 Evolution
  • BSCI 50373 - 001 Population And Commun Ecology
  • BSCI 70163 - 001 Organic Evolution
  • BSCI 70373 - 001 Population And Commun Ecology