Faculty
345 Russell Laboratories
1630 Linden Drive
Madison, WI 53706
Ph.D. Washington State University-Pullman, 1980 (Entomology)
MS University of Delaware, 1976 (Entomology)
BS Saint Joseph's College, 1972 (Biology)
Our program addresses mechanisms that drive the population dynamics of forest insects, with special emphasis on plant-insect interactions, predator-prey relationships, and insect-microbial-symbioses. We investigate each within the context of host plant properties that affect herbivore behavior, reproduction, and susceptibility to natural enemies, as well as herbivore counter-adaptations against multiple ecological constraints. We analyze biological thresholds and cross-scale interactions in insect outbreaks. Our study systems involve insects that pose challenges to natural resource management, so this information can improve our ability to address invasive species, sustainable production systems, biodiversity, and global change.
Our recent research highlights include: 1) How host selection behavior of individual bark beetles varies with beetle population density and thereby generates positive feedback during transitions from non-outbreak to outbreak conditions. These behaviors involve genetic, environmental responses to host compounds; 2) How attraction by predators to chemical signaling among herbivores can drive biochemical counter-adaptations that allow partial escape while allowing intraspecific functionality; 3) The critical role of thresholds in linking patterns with processes of insect outbreaks, specifically that tree defense is a crucial determinant of whether outbreaks occur, yet inconsequential after they do. 4) Beetles egest bacteria in oral secretions that inhibit opportunist fungi from exploiting host trees after their defenses are exhausted by beetle mass attacks; 5) Enteric gut bacteria are crucial to susceptibility of gypsy moth to the microbial pathogen Bt. Future research will expand our results on how microscale processes such as insect-symbiont-plant interactions can have landscape-scale outcomes.
All are collaborative projects, with interdisciplinary colleagues from UW depts. Forest & Wildlife Ecol, Plant Path, Microbio, and Zool, the US Forest Service, and various universities.
ENT/PLP/FWE 500: Insects & Diseases in Forest Resource Management
ENT / BOT/ ZOOL 473: Plant-Insect Interactions
ENT 601: Methods of Scientific Presentation
2011 Silverstein-Simeone Award, International Society of Chemical Ecology
2010 Beers-Bascom Professorship in Conservation, University of Wisconsin-Madison
2010 Founders Award, Entomological Society of America
2008 Kellet Mid-Career Award, UW-Madison Wisconsin Alumni Research Foundation
Selected Publications, Since 2000
Refereed Primary Journal Articles:
Havill, N.P., & K.F. Raffa. 2000. Compound effects of induced plant responses on insect herbivores and parasitoids: Implications for tritrophic interactions. Ecol. Entomol. 25: 171-179.
Aukema, B. H., D.L. Dahlsten, & K. F. Raffa. 2000. Exploiting behavioral disparities among predators and prey to selectively target pests: Maximizing bark beetle: predator removal during semiochemically based trap-out. Environ. Entomol. 29: 651-660.
Erbilgin, N, & K.F. Raffa. 2000. Effects of host tree species on attractiveness of tunneling pine engravers, Ips pini (Coleoptera: Scolytidae), to conspecifics and insect predators. J. Chem. Ecol. 26: 823-840.
Wallin, K.F., & K.F. Raffa. 2000. Influences of external chemical cues and internal physiological parameters on the multiple steps of post-landing host selection behavior of Ips pini (Coleoptera: Scolytidae). Environ. Entomol. 29: 442-453.
Aukema, B.H., D.L. Dahlsten & K.F. Raffa. 2000. Improved population monitoring of bark beetles and predators by incorporating disparate behavioral responses to semiochemicals. Environ. Entomol. 29: 618-629.
Werner, S.M., & K.F. Raffa. 2000. Effects of forest management practices on the diversity of Ground-occurring beetles in mixed northern hardwood forests of the Great Lakes Region. For. Ecol. & Manag. 139: 135-155.
Aukema, B.H., & K.F. Raffa. 2000. Chemically mediated predator free space: herbivores can synergize intraspecific communication without increasing risk of predation. J. Chem. Ecol. 26: 1923-1939.
Erbilgin, N. & K.F. Raffa. 2000. Opposing effects of host monoterpenes on responses by two sympatric species of bark beetles to their aggregation pheromones. J. Chem. Ecol. 26: 2527- 2548.
Erbilgin, N. & K.F. Raffa. 2001. Kairomonal range of generalist predators in specialized habitats. Entomol. Exper. et Applic. 99: 205-210.
Redmer, J. S., K. F. Wallin, & K. F. Raffa. 2001. Effect of host tree seasonal phenology on substrate suitability for the pine engraver, Ips pini (Coleoptera: Scolytidae) Implications to population dynamics and enemy free space J. Econ. Entomol. 94: 844-849.
Erbilgin N. & Raffa K.F. 2001. Modulation of predator attraction to pheromones of two prey species by stereochemistry of plant volatiles. Oecologia. 127: 444 - 453.
Wallin, K.F., & K.F. Raffa. 2001. Effects of folivory on subcortical plant defenses: Can defense theories predict interguild processes? Ecology 82: 1387-1400.
Raffa, K.F. 2001. Mixed messages across multiple trophic levels: The ecology of bark beetle chemical communication systems. Chemoecology 11: 49-65.
Erbilgin, N., A. Szele, K.D. Klepzig, & K.F. Raffa. 2001. Trap type, chirality of alpha-pinene, and geographic region affect sampling efficiency of root and lower stem insects in pine. J. Econ. Entomol. 94:1113-1121.
Codella, S.G., Jr. & K.F. Raffa. 2002. Desiccation of Pinus foliage induced by conifer sawfly (Hymenoptera: Diprionidae) oviposition: Effect of egg viability. Ecol. Entomol. 27: 618-621.
Erbilgin, N., & K.F. Raffa. 2002. Association of declining red pine stands with reduced populations of bark beetle predators, seasonal increases in root colonizing insects, and incidence of root pathogens. For. Ecol. & Manag. 164: 221-236.
Seybold, S.J., Bohlmann, J., & K.F. Raffa. 2000. Biosynthesis of coniferophagous bark beetle pheromones and conifer isoprenoids: an evolutionary perspective and synthesis. Can. Entomol. 132: 1-57.
Wallin, K.F. & K.F. Raffa. 2002. Density-mediated responses of bark beetles to host allelochemicals: A link between individual behavior and population dynamics. Ecol. Entomol. 27:484-492.
Wallin, K.F. & K.F. Raffa. 2002. Prior encounters modulate subsequent choices in host acceptance behavior by bark beetles. Entomol. Exper. Et. Applic. 103: 205-218.
Haberkern, K.E., Illman, B.L. & K. F. Raffa 2002.. Bark beetles and fungal associates colonizing white spruce in the Great Lakes region. Can. J. For. Res. 32: 1137-1150.
Erbilgin, N., E. V. Nordheim, B. H. Aukema, & K. F. Raffa. 2002. Population dynamics of Ips pini and Ips grandicollis in red pine plantations in Wisconsin: Within- and between- year associations with predators, competitors, and habitat quality. Environ. Entomol. 31: 1043-1051.
Aukema, B.H., & K. F. Raffa. 2002. Relative effects of exophytic predation, endophytic predation and intraspecific competition on a subcortical herbivore: Consequences to the reproduction of Ips pini and Thanasimus dubius. Oecologia. 133: 483-491.
Havill, N.P., & K.F. Raffa. 2002. Effects of gypsy moth (Lepidoptera: Lymantriidae) laboratory strain and crowding on emergence of the parasitoid Cotesia melanoscela (Hymenoptera: Braconidae). Entomol. News. 113: 197-202.
Wallin, K.F., J. Rutledge, & K.F. Raffa. 2002. Heritability of host acceptance and gallery construction behaviors of the bark beetle Ips pini (Coleoptera: Scolytidae). Environ. Entomol. 31: 1276-1281.
Werner, S.M. & K. F. Raffa. 2002. Seasonal activity of adult, ground-occurring beetles (Coleoptera) in forests of northeastern Wisconsin and the Upper Peninsula of Michigan. Amer. Mid. Naturalist. 149: 96-108.
Broderick, N. A., Goodman, R. M., Handelsman, J., & K. F. Raffa 2003. Effect of host diet and insect source on synergy of gypsy moth (Lepidoptera: Lymantriidae) mortality to Bacillus thuringiensis subsp. kurstaki by Zwittermicin A. Environ. Entomol. 32: 387-391.
Erbilgin, N. & K. F. Raffa. 2003. Spatial analysis of forest gaps resulting from bark beetle colonization of red pines experiencing belowground herbivory and infection. For. Ecol. & Manag. 177: 145-153.
Raffa, K.F., Havill, N. P. & E.V. Nordheim. 2002. How many choices can your test animal compare effectively? Evaluating a critical assumption of behavioral preference tests. Oecologia. 133: 422-429.
Rieske, L.K., & K.F. Raffa. 2003. Evaluation of visual and olfactory cues for sampling three thrips species (Thysanoptera: Thripidae) in northern deciduous forests. J. Econ. Entomol. 96:777-782.
Erbilgin, N., J.S. Powell, & K.F. Raffa. 2003. Effect of varying monoterpene concentrations on the response of Ips pini (Coleoptera: Scolytidae) to its aggregation pheromone: Implications to the pest management and ecology of bark beetles. J Ag. & For. Ent. 5: 269-274.
Powell, J.S. & K. F. Raffa. 2003. Fate of conifer terpenes in a polyphagous folivore: Evidence for metabolism by gypsy moth (Lepidoptera: Lymantriidae). J. Entomol. Sci. 38: 583-601. 129.
Raffa, K.F. & J.S Powell. 2005. Tolerance of plant monoterpenes and diterpene acids in four species of Lymantriidae (Lepidoptera) exhibiting a range of feeding specificities. Great Lakes Entomol. 37: 117-129.
Haberkern, K. E. & K. F. Raffa. 2003. Phloeophagous and predaceous insects responding to synthetic pheromones of bark beetles inhabiting white spruce stands in the Great Lakes Region. J. Chem. Ecol. 29: 1651-1663.
Miller, D.R., K.F. Raffa, M.J. Dalusky, & C.W. Berisford. 2003. North-south variation in the response of the pine engraver, Ips pini, to lanierone in eastern North America. J. Entomol. Sci. 38: 468-476.
Kopper, B.J., K.D. Klepzig, & K.F. Raffa. 2003. Effectiveness of modified White‟s solution at removing Ascomycete fungi associated with bark beetles (Coleoptera: Scolytidae). For. Pathol. 33: 237-240.
Aukema, B.H., & K. F. Raffa. 2004. Gender- and sequence- dependent predation within group colonizers of defended plants: a constraint on cheating among bark beetles? Oecologia. 138: 253-258.
Dahlsten, D. L., Six, D. L., Rowney, D. L., Lawson, A. B., Erbilgin, N., & K. F. Raffa. 2003. Attraction of Ips pini (Coleoptera: Scolytidae) and its predators to natural attractants and synthetic semiochemicals: Implications for population monitoring in northern California. Environ. Entomol. 32: 1115-1122.
Wallin, K.F., & K.F. Raffa. 2004. Feedback between individual host selection behavior and population dynamics in an eruptive insect herbivore. Ecol. Monogr. 74: 101-116.
Dahlsten, D. L., Six, D. L,. Erbilgin, N., Raffa K. F., Lawson, A. B., & D. L. Rowney. 2004. Attraction of Ips pini (Coleoptera: Scolytidae) and its predators to various enantiomeric ratios of ipsdienol and lanierone in California: Implications for the augmentation and conservation of natural enemies. Environ. Entomol. 33: 1554-1561.
Kleiner, K.K. Ellis, D.D., McCown, B.H. and K.F. Raffa. 2003. Leaf ontogeny influences leaf phenolics and the efficacy of the genetically expressed Bacillus thuringiensis cry1A(a) d- endotoxin in hybrid poplar against gypsy moth (Lepidoptera:Lymantriidae). J. Chem. Ecol. 29: 2585-2602.
Aukema, B.H., & K. F. Raffa. 2004. Behavior of adult and larval Platysoma cylindrica (Coleoptera: Histeridae) and larval Medetera bistriata (Diptera: Dolichopodidae) during subcortical predation of Ips pini (Coleoptera: Scolytidae). J. Insect Behav. 17: 115-128.
Broderick, N. A., K. F. Raffa, R. M. Goodman & J. Handelsman. 2004. Census of the bacterial community of the gypsy moth larval midgut using culturing and culture-independent methods. Appl. & Environ. Microbiol. 2004 70: 293-300.
Kopper, B. J. , K. D. Klepzig & K. F. Raffa 2004. Components of antagonism and mutualism in Ips pini - fungal interactions: Relationship to a life history of colonizing highly stressed and dead trees. Environ. Entomol. 33:28-34.
Aukema, B.H., Clayton, M, K. & K. F. Raffa 2004. Density-dependent effects of multiple predators sharing a common prey in an endophytic habitat. Oecologia. 139: 418-426.
Aukema, B.H., Richards, G.R., Krauth S.J. & K. F. Raffa. 2004. Species assemblage arriving at and emerging from trees colonized by Ips pini in the Great Lakes region: Partitioning by time since colonization, seasonal, and host species. Ann Entomol. Soc. Amer. 97: 117-129.
Aukema, B.H., & K. F. Raffa. 2004. Does aggregation benefit bark beetles by diluting predation? Links between a group-colonization strategy and the absence of emergent multiple predator effects. Ecol. Entomol. 29:129-138.
Aukema, B.H., & K. F. Raffa. 2005. Selective manipulation of predators using pheromones: Responses to frontalin and ipsdienol pheromone components of bark beetles in the Great Lakes region.. Agr. & For. Entomol. 7: 193-200.
Latty E. F., Werner, S. M. Mladenoff, D. J., Raffa, K. F., & T. A. Sickley. 2006. Response of ground beetle (Carabidae) assemblages to logging history in northern hardwood-hemlock forests. For. Ecol. & Manag. 222: 335-347
Liebhold, A.M., K.F. Raffa, & A.L. Diss. 2005. Forest type affects predation on gypsy moth pupae in Wisconsin. Agr. & For. Entomol. 7: 179-185.
Pinski, R.A., W.J. Mattson & K.F. Raffa. 2005. Host range and ovipositional behavior of adult Polydrusus sericeus and Phyllobius oblongus (Coleoptera: Curculionidae), nonindigenous inhabitants of northern hardwood forests. Environ. Entomol. 34: 148-157.
Pinski, R.A., W.J. Mattson & K.F. Raffa. 2005. Composition, seasonal phenologies, and distribution of an invasive root-feeding weevil (Coleoptera: Curculionidae) complex in northern hardwood forests. Environ. Entomol. 34: 298-307.
Aukema, B.H., Clayton, M, K. & K. F. Raffa 2005. Modeling flight activity and population dynamics of the pine engraver, Ips pini, in the Great Lakes Region: Effects of weather and predators over short time scales. Pop. Ecol. 47: 61-69.
Werner, S.M. & K. F. Raffa.. 2004. Comparison of methods for sampling Thysanoptera on basswood (Tilia americana, L.) trees in mixed northern hardwood deciduous forests. For. Ecol. & Manag. 201: 327-334.
Aukema, B.H., Werner, RA, Haberkern K.E, Illman, BL Clayton, M, K. & K. F. Raffa. 2005. Relative sources of variation in spruce beetle-fungal associations: Implications for sampling methodology and hypothesis testing in bark beetle-symbiont relationships. For. Ecol. & Manag.. 217: 187-202.
Delalibera, I. Jr, J. Handelsman, & K. F. Raffa. 2005. Cellulolytic Activity of microorganisms isolated from the guts of Saperda vestita (Coleoptera: Cerambycidae), Ips pini, and Dendroctonus frontalis (Coleoptera: Scolytidae). Environ. Entomol. 34; 541-547.
Werner, S.M., E.V. Nordheim, & K. F. Raffa. 2005. Impacts of the Introduced Basswood Thrips (Thrips calcaratus Uzel) on Forest Health in the Great Lakes Region. For. Ecol. & Manag. 214: 183-200.
Werner, S.M., M. Albers, T. Cryderman, D. Divini, R. Heyd, B Hrasovic , S Kobro, S Larsson, R. Mech, P. Niemela, M. Rousi, K Scanlon, S Weber & K. F. Raffa. 2005. Is the outbreak status of Thrips calcaratus Uzel in North America due to altered host relationships? For. Ecol. & Manag. 225: 200-206.
Kopper BJ. Illman BL. Kersten PJ. Klepzig KD. & KF Raffa. 2005. Effects of diterpene acids on components of a conifer bark beetle-fungal interaction: Tolerance by Ips pini and sensitivity by its associate Ophiostoma ips. Environ. Entomol. 34:486-493.
Aukema, B. H., A. L. Carroll, J. Zhu, K. F. Raffa, T. A. Sickley, & S. W. Taylor. 2006. Landscape level analysis of mountain pine beetle in British Columbia, Canada: Spatiotemporal development and spatial synchrony within the present outbreak. Ecography. 29: 427-441.
Maroja, L. S., S. M. Bogdanowicz, K. F. Wallin, K. F. Raffa & R. G. Harrison. 2007. Phylogeography of spruce beetles (Dendroctonus rufipennis Kirby) (Curculionidae:Scolytinae) in North America: distinctive mtDNA lineages associated with different species of host trees. Molecular Ecol. 16: 2560-2573.
Kersten, P. J., Kopper, B. J. , Raffa, K. F. & B. L. & Illman. 2006. High Performance Liquid Chromatography of Abietanes: Application to diterpene resin acid analysis in conifers. J. Chem. Ecol. 32: 2679-2685.
Schloss, P. D., I. Delalibera Jr, J. Handelsman, and K. F. Raffa. 2006. Bacteria associated with the guts of two wood-boring beetles: Anoplophora glabripennis and Saperda vestita (Cerambycidae). Environ. Entomol. 35: 625-629.
Vasanthakumar, A, I. Delalibera Jr., J. Handelsman, K. D Klepzig P. Schloss & K. F Raffa. 2006. Characterization of gut-associated microorganisms in larvae and adults of the southern pine beetle, Dendroctonus frontalis Zimmerman. Environ. Entomol. 35: 1710-1717.
Erbilgin, N, S. Mori, J.H. Sun, J.D. Stein, D.R. Owen, L.D. Merrill, K.F. Raffa, T. M. Montiel, D.L. Wood & N.E. Gillette. 2007. Response to host volatiles by native and introduced populations of Dendroctonus valens (Coleoptera: Curculionidae, Scolytinae) in North America and China. J. Chem. Ecol. 33: 131-146.
Cardoza, Y. J., K. D. Klepzig & K. F. Raffa. 2006. Bacteria in oral secretions of an endophytic insect inhibit antagonistic fungi. Ecol. Entomol. 31: 636-645.
Kendrick, A. P., & K. F. Raffa. 2006. Sources of insect and plant volatiles attractive to cottonwood leaf beetles feeding on hybrid poplar. J. Chem. Ecol. 32: 2585-2594.
Kendrick, A P., Krauth, S.J. Woodley, N.E., & K.F. Raffa. 2006. Notes on incidence and biology of the parasitoid complex of the cottonwood leaf beetle in Minnesota. Great Lakes Entomol. 38: 203-208.
Zhu, J., J. G. Rasmussen, J. Moller, B. H.Aukema & K.F. Raffa. 2008. Spatial-temporal modeling of forest gaps generated by colonization from below- and above- ground bark beetle species. J. American Statistical Association A&CS. 103: 162-177.
Salle, A, & K.F. Raffa. 2007. Interactions among intraspecific competition, emergence patterns, and host selection behaviour in Ips pini (Col. Scolytinae). Ecol. Entomol. 32: 162-171.
Cardoza, Y. J., S. Paskewitz & K. F. Raffa. 2006. Traveling through time and space on wings of beetles: A tripartite insect-fungi-nematode association. Symbiosis 41: 71-79.
Guan C., Ju. J., Borlee B., Williamson, L., Shen B., Raffa K., & J. Handelsman. 2007. Signal mimics derived from a metagenomic analysis of gypsy moth gut microbiota. Appl. & Environ. Microbiol. 73: 3669-3676.
Broderick, N.A., K. F. Raffa, K.F. & J Handelsman. 2006. Midgut bacteria required for Bacillus thuringiensis insecticidal activity. PNAS. 103: 15196-15199.
Rasmussen, J. G.., J. Moller, B. H. Aukema, K.F. Raffa, & J. Zhu. 2007. Bayesian inference for multivariate point processes observed at sparsely distributed times. Royal Statistical Society series B. 69: 701-713.
McMahon, M.D., K. F. Raffa, Nordheim E. V. & B.H. Aukema. 2010. Too close for comfort: Effect of spacing distance and pattern on statistical inference of behavioral choice tests in the field. Ent. Exper. et Applic.136: 66-71.
Raffa, K.F., Hobson, K.R., LaFontaine, S., & B. H. Aukema. 2007. Can chemical communication be cryptic? Adaptations by herbivores to natural enemies exploiting prey semiochemistry. Oecologia. 153: 1009-1019.
Boone, C. K., D.L. Six, Y. Zheng,& K.F. Raffa. 2008. Exploitation of microbial symbionts of bark beetles by parasitoids and dipteran predators. Environ. Entomol. 37: 150-161.
Aukema, B.H, Carroll, A.L., Zheng Y., Zhu, J., Raffa, K.F., Moore, R.D., Stahl, K., & S.W. Taylor. 2008. Movement of outbreak populations of mountain pine beetle: Influences of spatiotemporal patterns and climate. Ecography. 31: 348-358.
Delalibera I., Jr., Vasanthakumar, A., Burwitz, BJ, Schloss, PD, Klepzig, KD, Handelsman J & K.F. Raffa, 2007. Composition of the bacterial community in the gut of the pine engraver beetle, Ips pini (Say) (Coleoptera: Curculionidae: Scolytinae). Symbiosis. 47: 93-104.
Gray, R.H., C. G. Lorimer,P.C. Tobin & K.F. Raffa. 2008. Pre-outbreak dynamics of a recently established invasive herbivore: Roles of natural enemies and habitat structure in stage-specific performance of gypsy moth (Lepidoptera: Lymantriidae) populations in northeastern Wisconsin. Environ. Entomol. 37: 1174-1184.
Yanek, M. L., & K. F. Raffa. Evaluation of Gypchek and its carrier on various Lepidoptera species under laboratory conditions. 2008. Great Lakes. Entomol. 41: 27-36.
Boone, C. K, Six, D. L. & K. F. Raffa. 2008. The enemy of my enemy is still my enemy: Competitors add to predator load of primary bark beetles. Ag. For. Entomol. 10: 411-421.
Vasanthakumar, A, I. J. Handelsman, P. Schloss, L. Bauer & K. F Raffa. 2008. Gut microbiota of an invasive wood boring beetle, the emerald ash borer: community composition and structure across different life stages. Environ. Entomol. 37: 1344-1353.
Cardoza, Y. J., K. D. Klepzig, J. C. Moser & K. F. Raffa. Raffa. 2008. Multipartite symbioses among fungi, mites, nematodes and the spruce beetle, Dendroctonus rufipennis. Environ. Entomol. 37:956-963.
Raffa, K. F. Aukema, B. H., Bentz, B.J., Carroll A.L., Hicke, J.A., Turner MG, & W. H. Romme. 2008. Cross-scale drivers of natural disturbances prone to anthropogenic amplification: The dynamics of biome-wide bark beetle eruptions. BioScience. 58: 501-517.
Kanzaki, N, RM Giblin-Davis, YJ Cardoza, KF Raffa, W Ye, & BJ Center. 2008. Bursaphelenchus rufipennis n. sp. (Parasitaphelenchidae) and redescription of Ektaphelenchus obtusus (Ektaphelenchidae): Associates from nematangia on the hind wings of Dendroctonus rufipennis (Coleoptera: Scolytidae). Nematology. 10: 925-955.
Boone, C.K, Six, D.L., Krauth, S.J. & K.F. Raffa. 2009. Assemblage of Hymenoptera arriving at logs colonized by Ips pini (Say) (Coleoptera: Curculionidae) and its microbial symbionts in western Montana. Can. Entomol. 141:172-199.
Robinson, CJ., P. Schloss, Y. Ramos, K. Raffa & J. Handelsman. 2010. Robustness of the bacterial community in the cabbage white butterfly larval midgut. Microbial Ecology 59: 199-211.
Cardoza, YJ., A Vasanthakumar, A Suazo & KF Raffa. 2009. Survey and phylogenetic analysis of the culturable microbial fauna in the oral secretions of three bark beetle species. Ent Exper. et Applic. 131:138-147.
Broderick, N.A., Robinson, C.J., McMahon, M.D., Holt, J., Handelsman, J., & K.F. Raffa. 2009. Contributions of gut bacteria to Bacillus thuringiensis - induced mortality vary across a range of Lepidoptera. BMC Biology. 7-11: 9pp.
Adams, A., Cardoza, Y., Currie, C., Klepzig, K.D. & K.F. Raffa. 2009. Effects of symbiotic bacteria and tree chemistry on the growth and reproduction of bark beetle fungal symbionts. Can. J. For. Res. 39: 1133-1147.
Klepzig, K.D., Adams, A.S., Handelsman, J., & K.F. Raffa. 2009. Symbioses: A key driver of insect physiological processes, ecological interactions, evolutionary diversification and impacts on humans. Environ. Entomol. 38: 67-77.
Allen, H.K., K.A. Cloud-Hansen, J. M. Wolinski, C. Guan, S. Greene, S. Lu, M. Boeyink, N. Broderick, K. F. Raffa, & J. Handelsman. 2009. Resident microbiota of the gypsy moth midgut harbors antibiotic resistance determinants. DNA and Cell Biology. 28: 109-117.
Aukema, B.H., J. Zhu, J. Moeller, J. Rasmussen & K. F. Raffa. 2010. Interactions between below- and above- ground herbivores drive a forest decline and gap-forming syndrome. For. Ecol. & Management. 259: 374-382.
A.S. Adams, Adams, S.M., C.R. Currie, N.E. Gillette & K.F. Raffa. 2010. Community analysis of bacteria associated with the red turpentine beetle, Dendroctonus valens. Environ Entomol. 39: 406-414.
Broderick N. A., K. F. Raffa & J. Handelsman. 2010. Chemical modulators of the innate immune response alter gypsy moth larval susceptibility to Bacillus thuringiensis. BMC Biology. 10:129; 13 pp.
Hillstrom, M., L. Vigue, D. Coyle, K. F. Raffa & R. Lindroth. 2010. Performance of an invasive weevil, Polydrusus sericeus Schaller (Coleoptera: Curculionidae), is influenced by atmospheric CO2 and host species, Ag. & For. Entomol. 12: 285-292.
Aukema B.H., J.S. Powell, M.K. Clayton & K.F. Raffa. 2010. Variation in complex semiochemical signals arising from insects and host plants. Environ. Entomol. 39:874-882.
Contarini, M, KS. Onufrieva, KW. Thorpe, KF Raffa & PC Tobin. 2009. Mate-finding failure as an important cause of Allee effects along the leading edge of an invading insect population. Entomol. Exper. Applic. 133:307-314.
Coyle, D R, WJ Mattson, & K. F. Raffa. 2010. Laboratory performance of polyphagous invasive weevils on the predominant woody plant species of a northern hardwood community. Environ. Entomol. 39: 1242-1248.
Broderick, NA, E Vasquez, J Handelsman & KF Raffa. 2010. Effect of clonal variation among hybrid poplars on susceptibility of gypsy moth (Lepidoptera: Lymantriidae) to Bacillus thuringiensis subsp. kurstakii J. Econ. Entomol. 103: 718-725.
Coyle, D.R, M. S. Jordan & K. F. Raffa. 2010. Host plant phenology affects performance of an invasive weevil, Phyllobius oblongus L. (Coleoptera: Curculionidae), in a northern hardwood forest ecosystem. Environ. Entomol. 39: 1539-1544.
Please visit the Raffa laboratory website for information about our research program
http://www.entomology.wisc.edu/raffa/
Aaron Adams
Postdoctoral Research Associate
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Jesse Pfammatter
Graduate Student
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Andy Lerch
Graduate Student
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Charles Mason
Graduate Student
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Erinn Powell
Graduate Student
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Rachel Arango
Graduate Student
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Sandye Adams
Associate Research Specialist
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Todd Johnson
Research Intern
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Abigail Mapes
Research Intern
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