|Education: Oberlin College (B.A.; Biology, Environmental Studies; 1981).
SUNY at Stony Brook (Department of Ecology and Evolution; 1982-1983; transferred).
UC Berkeley (Ph.D.; Department of Entomological Sciences; 1989).
Research: Associate Research Scientist. University of Michigan, 2006-present. Plant
oxidative defenses. Tannin oxidative activity in caterpillars and grasshoppers.
Assistant Research Scientist. University of Michigan, 2000-2006. Plant oxidative defenses: effects of ingested oxidases and phenolic compounds on caterpillar gut biochemistry and insect performance. Phenolic compounds as prooxidants. Insect nutritional ecology.
Research Investigator. University of Michigan, 1994-1999. Oxidative stress in insect herbivores: roles of antioxidant enzymes and antioxidants in the gut lumen. The peritrophic envelope as a barrier to ingested plant allelochemicals.
Postdoctoral Fellow. Dr. Michael M. Martin, University of Michigan, 1990-1993. Biochemical and physiological effects of ingested tannins on larval Lepidoptera.
Postdoctoral Fellow. Dr. Alexander Purcell, UC Berkeley, 1990. Factors affecting insect transmission of a xylem-inhabiting bacterium, Clavibacter xyli cynodontis, to grasses by insects.
Doctoral Dissertation Research. Dr. Elizabeth Bernays, UC Berkeley, 1984-1989. Nutritional ecology of C3 and C4 grass-feeding caterpillars and ultrastructural changes in C4 grass leaf tissues during digestion.
Teaching: Undergraduate Research Advisor. MCDB 300, 400 & 700 (15 students 2000-
2009, including three honors students).
Undergraduate Research Mentor. NSF REU (six fellowships 2000-2003).
Undergraduate Research Mentor. UM UROP and MCDB research support (nine
Instructor. Summers-Knoll Elementary School summer field course on insects
(2001-2006) and guest lecturer in entomology.
Naturalist. Ann Arbor Public Schools, Environmental Ed. Program, 1996-present.
Volunteer. UM Museum of Natural History, Science outreach program (K-12), 1995-1996.
Teaching Assistant. Applied Entomology (UC Berkeley, 1989), General Entomology (UC Berkeley, 1986), Introductory Biology (UC Berkeley, 1984, 1985; SUNY at Stony Brook, 1982, 1983), Plant Systematics (Oberlin College, 1982), The Fungi (Oberlin College, 1981, 1982).
Fellowships: USDA Research Grant (PI); 2006-2009 ($391,000).
USDA Research Grant (PI); 2004-2007 ($376,000).
USDA Research Grant (PI); 1999-2002 ($200,000).
NSF Research Grant (PI); 1999-2002 ($322,000).
NSF Research Grant (PI); 1997-1999. ($72,000).
NSF Research Grant (Co-PI); 1994-1997 ($230,000).
University of California Newhouse Fund Grant; 1989.
Harvey Magy Memorial Scholarship in Entomology; 1988.
NSF Doctoral Dissertation Improvement Grant; 1987-1989.
University of California Regents Fellowship; 1987.
Sigma Xi Research Grant; 1985.
Inter-campus Doctoral Fellowship (SUNY College of Env. Sci. & Forestry); 1983.
NSF Undergraduate Research Program; 1981.
Mountain Lake Biological Station Naturalist Award; 1981.
Publications: Barbehenn R.V., A. Jaros, G. Lee, C. Mozola, Q. Weir and J.-P. Salminen. 2009. Tree
resistance to Lymantria dispar caterpillars: importance and limitations of foliar
tannin composition. Oecologia 159: 777-788.
Barbehenn R.V., A. Jaros, G. Lee, C. Mozola, Q. Weir and J.-P. Salminen. 2009. Hydrolyzable tannins as “quantitative defenses”: limited impact against Lymantria dispar caterpillars on hybrid poplar. J. Insect Physiol. 55: 297-304.
Barbehenn R.V., R.E. Maben and J.J. Knoester. 2008. Linking phenolic oxidation in the midgut lumen with oxidative stress in the midgut tissues of a tree-feeding caterpillar Malacosoma disstria (Lepidoptera: Lasiocampidae). Env. Entomol. 37:1113-1118.
Barbehenn R.V., A. Jaros, L. Yipp, L. Tran, A.K. Kanellis, and C.P. Constabel. 2008. Evaluating ascorbate oxidase as a plant defense against leaf-chewing insects using transgenic poplars. J. Chem. Ecol. 34: 1331-1340.
Constabel C.P. and R. Barbehenn. 2008. Defensive roles of polyphenol oxidase in plants. In A. Schaller (ed.), Induced Plant Resistance to Herbivory. Springer, New York.
Barbehenn R.V., Weir Q., and J.-P. Salminen. 2008. Oxidation of ingested phenolics in the tree-feeding caterpillar Orgyia leucostigma depends on foliar chemical composition. J. Chem. Ecol. 34: 748-756.
Barbehenn R.V., C.P. Jones, L. Yip, L. Tran, and C.P. Constabel. 2007. Limited impact of elevated levels of polylphenol oxidase on tree-feeding caterpillars: assessing individual plant defenses with transgenic poplar. Oecologia 154: 129-140.
Barbehenn R.V., C.P. Jones, A.E. Hagerman, M. Karonen and J.-P. Salminen. 2006. Ellagitannins have greater oxidative activities than condensed tannins and galloyl glucoses at high pH: potential impact on caterpillars. J. Chem. Ecol. 32: 2253-2267.
Barbehenn R.V., C.P. Jones, M. Karonen and J.-P. Salminen. 2006. Tannin composition affects the oxidative activities of tree leaves. J. Chem. Ecol. 32: 2235-2251.
Barbehenn R.V. 2005. Grasshoppers efficiently process the bundle sheath cells in a C4 grass: implications for patterns of host plant utilization. Entomol. Exp. Appl. 116: 209-217.
Barbehenn R., T. Dodick, U. Poopat and B. Spencer. 2005. Fenton-type reactions and iron concentrations in the midgut fluids of tree-feeding caterpillars. Arch. Insect Biochem. Physiol. 60: 32-43.
Barbehenn R.V., S. Cheek, A. Gasperut, E. Lister and R. Maben. 2005. Phenolic compounds in red oak and sugar maple leaves have prooxidant activities in the midguts of Malacosoma disstria and Orgyia leucostigma caterpillars. J. Chem. Ecol. 31: 969-988.
Barbehenn R.V. and J. Stannard. 2004. Antioxidant defense of the midgut epithelium by the peritrophic envelope in caterpillars. J. Insect Physiol. 50: 783-790.
Barbehenn R.V., Z. Chen, D.N. Karowe and A. Spickard. 2004. C3 grasses have higher nutritional quality than C4 grasses under ambient and elevated atmospheric CO2. Global Change Biol. 10: 1565-1575.
Barbehenn R.V., D.N. Karowe and Z. Chen. 2004. Performance of a generalist grasshopper on a C3 and a C4 grass: compensation for the effects of elevated CO2 on plant nutritional quality. Oecologia 104: 96-103.
Barbehenn R.V., D.N. Karowe and A. Spickard. 2004. Effects of elevated atmospheric CO2 on the nutritional ecology of C3 and C4 grass-feeding caterpillars. Oecologia 104: 86-95.
Barbehenn R.V., A.C. Walker and F. Uddin. 2003. Antioxidants in the midgut fluids of a tannin-tolerant and a tannin-sensitive caterpillar: effects of seasonal changes in tree leaves. J. Chem. Ecol.29: 1099-1116.
Barbehenn, R.V. and N.P. Kristensen. 2003. Digestive and excretory system. In N. P. Kristensen (ed.), Lepidoptera: Moths and Butterflies 2. Handbook of Zoology. 4 (36). De Gruyter, New York.
Barbehenn, R.V. 2003. Antioxidants in grasshoppers: higher levels defend the midgut tissues of a polyphagous species than a graminivorous species. J. Chem. Ecol. 29: 683-702.
Barbehenn, R.V., U. Poopat and B. Spencer. 2003. Semiquinone and ascorbyl radicals in the gut fluids of caterpillars measured with EPR spectrometry. Insect Biochem. Mol. Biol. 33: 125-130.
Barbehenn, R.V. 2002. Gut-based antioxidant enzymes in a polyphagous and a graminivorous grasshopper. J. Chem. Ecol. 28: 1325-1343.
Barbehenn, R.V. 2001. Roles of peritrophic membranes in protecting herbivorous insects from ingested plant allelochemicals. Arch. Insect Biochem. Physiol. 47: 86-99.
Gongora, C.E., S. Wang, R.V. Barbehenn and R.M. Broadway. 2001. Chitinolytic enzymes from Streptomyces albidoflavus expressed in tomato plants: effects on Trichoplusia ni. Entomol. Exp. Appl. 99: 193-204.
Barbehenn, R.V., S.L. Bumgarner, E. Roosen, and M.M. Martin. 2001. Antioxidant defenses in caterpillars: role of the ascorbate recycling system in the midgut lumen. J. Insect Physiol. 47: 349-357.
Johnson, K.S. and R.V. Barbehenn. 2000. Oxygen levels in the gut lumens of herbivorous insects. J. Insect Physiol. 46:897-903.
Barbehenn, R.V. 1999. Non-absorption of ingested lipophilic and amphiphilic allelochemicals by generalist grasshoppers: the role of extractive ultrafiltration by the peritrophic envelope. Arch. Insect Biochem. Physiol. 42: 130-137.
Barbehenn, R.V., J. Reese and K.S. Hagen. 1999. The food of insects. In C. B. Huffaker and A.P. Gutierrez, eds., Ecological Entomology. John Wiley and Sons, New York, pp. 83-122.
Barbehenn, R.V. and M.M. Martin. 1998. The formation of insoluble and colloidally dispersed tannic acid complexes in the midgut fluid of Manduca sexta (Lepidoptera: Sphingidae): an explanation for the failure of tannic acid to cross the peritrophic envelopes of lepidopteran larvae. Arch. Insect Biochem. Physiol. 39: 109-117.
Barbehenn, R.V. and M.M. Martin. 1997. Permeability of the peritrophic envelopes of herbivorous insects to dextran sulfate: a test of the polyanion exclusion hypothesis. J. Insect Physiol. 43: 243-249.
Barbehenn, R.V., M.M. Martin and A.E. Hagerman. 1996. Reassessment of the roles of the peritrophic envelope and hydrolysis in protecting polyphagous grasshoppers from ingested hydrolyzable tannins. J. Chem. Ecol. 22: 1911-1929.
Barbehenn, R.V. 1995. Measurement of protein in whole plant samples with ninhydrin. J. Sci. Food Agr. 69: 353-359.
Barbehenn, R.V. and M.M. Martin. 1995. Peritrophic envelope permeability in herbivorous insects. J. Insect Physiol. 41: 303-311.
Barbehenn, R.V. 1994. Host plants of Poanes melane (Hesperiidae). J. Lepidopt. Soc. 48: 386-388.
Barbehenn, R.V. and M.M. Martin. 1994. Tannin sensitivity in Malacosoma disstria: roles of the peritrophic envelope and midgut oxidation. J. Chem. Ecol. 20: 1985-2001.
Barbehenn, R.V. and A.H. Purcell. 1993. Factors affecting the transmission of a xylem-inhabiting bacterium, Clavibacter xyli cynodontis, to grasses by insects. Phytopathology 83: 859-863.
Barbehenn, R.V. 1993. Silicon: an indigestible marker for measuring food consumption and utilization by insects. Entomol. Exp. Appl. 67: 247-251.
Barbehenn, R.V. and M.M. Martin. 1992. The protective role of the peritrophic membrane in the tannin-tolerant larvae of Orgyia leucostigma (Lepidoptera). J. Insect Physiol. 38: 973-980.
Barbehenn, R.V. and E.A. Bernays. 1992. Relative nutritional quality of C3 and C4 grasses for a graminivorous lepidopteran, Paratrytone melane (Hesperiidae). Oecologia 92: 97-103.
Barbehenn, R.V. 1992. Digestion of uncrushed leaf tissues by leaf-snipping larval Lepidoptera. Oecologia 89: 229-235.
Barbehenn, R.V. and A. Keddie. 1992. Gut contents in molting larval Lepidoptera: a source of error in nutritional studies. Entomol. Exp. Appl. 62: 87-91.
Montllor, C.B., E.A. Bernays and R.V. Barbehenn. 1990. Importance of quinolizidine alkaloids in the relationship between larvae of Uresiphita reversalis (Lepidoptera: Pyralidae), and a host plant Cytisus monspessulanus. J. Chem. Ecol. 16: 1853-1865.
Usher, B.F., E.A. Bernays, R.V. Barbehenn and R.P. Wrubel. 1989. Oral dosing of insects with feeding deterrent compounds. Entomol. Exp. Appl. 52: 119-133.
Usher, B.F., E.A. Bernays and R.V. Barbehenn. 1988. Antifeedant tests with larvae of Pseudaletia unipuncta: variability of behavioral response. Entomol. Exp. Appl. 48: 203-212.
Bernays, E.A. and R.V. Barbehenn. 1987. Nutritional ecology of grass foliage-chewing insects. In Slansky, F. and J.G. Rodriguez, eds., Nutritional Ecology of Insects, Mites, and Spiders. John Wiley and Sons., New York.
Book Reviews: Chown, S.L. and S.W. Nicolson. 2004. Insect Physiological Ecology. Oxford University Press. (Quarterly Review of Biology).
Karasov, W.H. and C. Martinez del Rio. 2008. Physiological Ecology: How Animals Process Energy, Nutrients, and Toxins. Princeton University Press, Princeton. (Quarterly Review of Biology).
Seminars: Ecological Society of America; Sigma Xi.
Gordon Research Conference on Plant-Herbivore Interactions (posters presented); 1989, 1992, 1995, 2001, 2004, 2007.
Annual meeting of the International Society of Chemical Ecology; 1994 (paper presented), 2004 (poster presented).
Twelfth International Plant Resistance to Insects Workshop (poster presented); 1996.
Eighteenth International Congress of Entomology (paper presented); 1988.
Annual meeting of the Entomological Society of America; 1987 (paper presented), 1994 (invited speaker), 2007 (invited speaker).
USDA-NRI Arthropods and Nematodes Biology and Management Programs Awardee Workshop; 2006 (poster presented), 2007 (paper presented), 2008 (poster presented).
UC Berkeley, Department of Entomological Sciences, 1990;
Eastern Michigan University, Department of Biology, 1994.
Ohio University, Department of Biological Sciences, 2001.
Refereed Journals: Acta Oecologia, American Journal of Botany, Annals of Clinical Microbiology and
Antimicrobials, Annals of the Entomological Society of America, Archives of Insect
Biochemistry and Physiology, Arthropod-Plant Interactions, Arthropod Structure and
Development, Biological Control, Canadian Journal of Zoology, Chemoecology,
Comparative Biochemistry and Physiology, Ecological Entomology, Ecology,
Entomologia Experimentalis et Applicata, Environmental Entomology,
Environmental Toxicology, Hydrobiologia, Insect Molecular Biology, International
Journal of Pest Management, Journal of Chemical Ecology, Journal of Experimental
Biology, Journal of Insect Physiology, Journal of Proteome Research, Molecules,
New Phytologist, Oecologia, Oikos, Pan-Pacific Entomologist, Pesticide
Biochemistry and Physiology, Physiological Entomology, Phytochemistry,
Proceedings of the National Academy of Sciences, Spectroscopy Letters
Refereed Proposals: Academy of Sciences of theCzech Republic
Canadian Forest Service Genomics Research Initiative
NSF Ecological and Evolutionary Physiology Program
US Civilian Research and Development Foundation
USDA Competitive Grants Program
Service: USDA Entomology and Nematology competitive grants review panel (2000, 2008,
NSF – IBN grants review panel (2001, 2002).
UM Undergraduate Research Opportunities Program review panel (2005)
HPLC-mass spectrometer maintenance and training (UM Dept. MCDB)