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Dr. Ellen Yerger

Dr. Ellen YergerContact Information
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Postdoctoral Scholar, Pennsylvania State University
PhD Entomology, University of Illinois, Urbana-Champaign
MS Chemistry, University of Illinois, Urbana-Champaign
BS Biology (Honors), Union College, Schenectady NY 




BIOL 201 Ecology and Evolution
BiOL 202 Cell and Molecular Biology


Insect Plant Interactions, Forest Lepidoptera, Chemical Ecology. Insect's response to invasive plants.


Wheatall, L., T. Nuttle, and E.H. Yerger. 2013. Indirect effects of
pandemic deer overabundance inferred from caterpillar-host relations.
Conservation Biology 27(5): 1107-1116.

Yerger, E. H.  2013.  Student perspectives on introductory biology labs designed to develop relevant skills and core competencies. In: Robert E. Yager, editor. Exemplary College Science Teaching.  National Science Teachers Association Press.  pp. 75-89. 

Dr. Yerger Research

Nuttle, T., E. H. Yerger, S. H. Stoleson, and T. E. Ristau. 2011. Legacy of top-down herbivore pressure ricochets back up multiple trophic levels in forest canopies over 30 years. Ecosphere 2: 1-11.

Dr. Yerger Data

Yerger, E.H.  2008.  Assessments that Assist in Motivating Students.  In: Linda W. Crow, Donald French, and Tom Lord, editors. College Science Teacher’s Guide to Assessment.  National Science Teachers Association Press. pp.151-153.  

Yerger, E.H., and M.C. Rossiter. 1996. Natural causes and rates of early larval mortality in gypsy moths (Lepidoptera: Lymantriidae) sampled from field populations in different density states. Environmental Entomology 25: 1002-1011.

Grazzini, R., D. Hesk, E. Yerger, D. Cox-Foster, J. Medford, R. Craig, R.O. Mumma. 1995. Species distribution of biochemical and morphological characters associated with small pest resistance in Pelargonium xhortorum. J. Amer. Soc. Hort. Sci. 120(2): 336-342.

Grazzini, R., D. Hesk, E. Yerger, D. Cox-Foster, J. Medford, R. Craig, R.O. Mumma. 1995. Distribution of anacardic acids associated with small pest resistance among cultivars of Pelargonium xhortorum. J. Amer. Soc. Hort. Sci. 120(2): 343-346.

Mumma, R.O., R. Craig, D. Cox-Foster, J. Medford, H. Grossman, R. Grazzini, D. Hesk, D. Walters, E. Yerger. 1992. Biochemistry and Genetics of Small Arthropod Resistance in Pelargonium. In R. Craig and J. Selchau, eds., Proceedings of the Third International Geranium Conference. Ball Publishing, Geneva, IL.

Mumma, R.O., R. Craig, D. Cox-Foster, J. Medford, R. Grazzini, E. Yerger, D. Hesk. 1992. Chemistry, Morphology, and Genetics of Small Pest Resistance in Geraniums. In J.A. Garbarino and P. Fiedler, eds., Actas: 1er Simposio Internacional Quimica de Productos Naturales y sus Aplicaciones. Division Quimica de Productos Naturales, Sociedad Chilena de Quimica, publisher. pp. 45-59.

Yerger, E.H., R.A. Grazzini, D. Hesk, D.L. Cox-Foster, R. Craig and R.O. Mumma. 1992. A Rapid Method for Isolating Glandular Trichomes. Plant Physiol. 99: 1-7.

Grazzini, R.A., E. Yerger, D. Hesk, D. Cox-Foster, J. Medford, R. Craig, and R.O. Mumma. 1991. Glandular trichome-specific lipid composition of geranium (abstract no. 711). HortScience 26: 167.

Grazzini, R.A., D. Hesk, E. Yerger, C.C. Reddy, G. Hildenbrandt, J. Medford, D. Cox-Foster, R. Craig, and R.O. Mumma. 1991. Inhibition of prostaglandin endoperoxide synthase and lipoxygenase by anacardic acids (abstract no. 694). HortScience 26: 165.

Grazzini, R., D. Hesk, E. Heininger, G. Hildenbrandt, C. C. Reddy, D. Cox-Foster, J. Medford, R. Craig, and R.O. Mumma. 1990. Inhibition of lipoxygenase and prostaglandin endoperoxide synthase by anacardic acids. Biochem. Biophys. Res. Commun. 176: 775-780.

Heininger, E.E. 1989. Effects of furocoumarin and furoquinoline allelochemicals on host plant utilization by Papilionidae. PhD thesis. University of Illinois at Urbana-Champaign, Urbana IL. Under the direction of May R. Berenbaum.

Tuveson, R.W., M.R. Berenbaum, and E.E. Heininger. 1986. Inactivation and mutagenesis by phototoxins using Escherichia coli strains differing in sensitivity to near- and far- ultraviolet light. J. Chem. Ecol. 12: 933-948.

  • Biology Department
  • Weyandt Hall, Room 114
    975 Oakland Avenue
    Indiana, PA 15705-1081
  • Phone: 724-357-2352
  • Fax: 724-357-5524
  • Office Hours
  • Monday through Friday
  • 7:30 a.m.–12:00 p.m.
  • 1:00 p.m.–4:00 p.m.