Janice L. Krumm

Janice L. Krumm, PhD

  • Associate Professor

Programs I Teach


  • PhD, Evolutionary Biology (2006)
    University of California--Riverside (CA)
  • BS, Zoology (1995)
    Michigan State University (MI)

About Me

I am passionate about engaging biology undergraduates in research through independent research experiences and student-directed course research projects. I enjoy working with students from freshman to senior years in all stages of research, helping them develop skills and abilities that will enable them to succeed in any career field, from field ecologist to physician.

I work with student researchers on fairy shrimp evolution during the academic year and on host plant-herbivore-predator tri-trophic interactions in the summer. To encourage and support undergraduates in all areas of research, I also served as co-founder and co-director of the Arts & Sciences Summer Research Program at Widener for its first five years.

I am currently focused on expanding and refining the student-led course projects in my upper-division courses. In my course on the evolution of sex, students designed and executed experiments on population sex ratios in spicebush and on sexual selection in two species of fairy shrimp.

Research Interests

My current research focuses on the interactions between trophic levels in host plant-herbivore-predator/parasitoid systems. I am currently working with the tulip tree beauty moth in the Northeast U.S. looking at interactions between host plants, caterpillars, and fly and wasp parasitoids that attack the caterpillars.

I have also recently begun working with an agricultural system in Texas looking at the interactions between cotton, endophytic fungi, and aphid and beet armyworm herbivores. The endophytic fungi colonize the cotton plants and can affect cotton growth and aphid reproduction. I also work on the evolution of fairy shrimp life history, sex determination, and sexual selection.


  • Krumm, J.L., Nagengast, A.A., Moretti, A., Colgan, M., Fisher, K.E., Hy, K.L., Castellante, R.M., & Poslusny, M. (2014). Summer research program on a shoestring budget: Increasing participation in undergraduate research. Perspectives on Undergraduate Research and Mentoring, 3(2), 1–10.
  • Krumm, J.L. (2013). Axial gynandromorphy and sex determination in Branchinecta lindahli (Branchiopoda: Anostraca). Journal of Crustacean Biology, 33(3), 303–308.


In the Media