Page Banner

United States Department of Agriculture

Agricultural Research Service

Richard L. Hellmich

Research Entomologist


Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Fitness costs of resistance to Cry3Bb1 maize by Western Corn Rootworm - (Peer Reviewed Journal) - (06-Nov-14)
Comparison of fumonisin contamination using HPLC and ELISA methods in Bt and near-isogenic maize hybrids infested with European corn borer or Western bean cutworm - (Peer Reviewed Journal)
Bowers, E., Hellmich II, R.L., Munkvold, G.P. 2014. Comparison of fumonisin contamination using HPLC and ELISA methods in Bt and near-isogenic maize hybrids infested with European corn borer or Western bean cutworm. Journal of Agricultural and Food Chemistry. 62:6463-6472.
Effect of maize lines on larval fitness costs of Cry1F resistance in the European corn borer (Lepidoptera: Crambidae) - (Peer Reviewed Journal)
Petzold-Maxwell, J.L., Siegfried, B.D., Hellmich II, R.L., Abel, C.A., Coates, B.S., Spencer, T.A., Gassmann, A.J. 2014. Effect of maize lines on larval fitness costs of Cry1F resistance in the European corn borer (Lepidoptera: Crambidae). Journal of Economic Entomology. 107:764-772.
Susceptibility and aversion of Spodoptera frugiperda to Cry1F Bt maize and considerations for insect resistance management - (Peer Reviewed Journal)
Binning, R., Coats, J., Xiaoxiao, K., Hellmich II, R.L. 2014. Susceptibility and aversion of Spodoptera frugiperda to Cry1F Bt maize and considerations for insect resistance management. Journal of Economic Entomology. 107(1):368-374.
Using resistant prey demonstrates that Bt plants producing Cry1Ac, Cry2Ab and Cry1F have no negative effects on Geocoris punctipes and Orius insidiosus - (Peer Reviewed Journal)
Tian, J.C., Long, L.P., Wang, X.P., Naranjo, S.E., Romeis, J., Hellmich, R.L., Wang, P., Shelton, A.M. 2014. Using resistant prey demonstrates that Bt plants producing Cry1Ac, Cry2Ab and Cry1F have no negative effects on Geocoris punctipes and Orius insidiosus. Environmental Entomology. 43:242-251.
Surrogate species selection for assessing potential adverse environmental impacts of genetically engineered plants on non-target organisms - (Proceedings)
Carstens, K., Cayabyab, B., De Schrijver, A., Gadeleta, P., Hellmich Ii, R.L., Mclean, M., Romeis, J., Storer, N., Valicente, F.H., Wach, M. 2013. Surrogate species selection for assessing potential adverse environmental impacts of genetically engineered plants on non-target organisms. GM Crops. 5(1):11-5.
Unlinked genetic loci control the reduced transcription of aminopeptidase N 1 and 3 in the European corn borer and determine tolerance to Bacillus thuringiensis Cry1Ab toxin - (Peer Reviewed Journal)
Coates, B.S., Sumerford, D.V., Hellmich II, R.L., Abel, C.A. 2013. Unlinked genetic loci control the reduced transcription of aminopeptidase N 1 and 3 in the European corn borer and determine tolerance to Bacillus thuringiensis Cry1Ab toxin. Journal of Insect Biochemistry and Molecular Biology. 43(12):1152-1160.
Frequency of hybridization between Ostrinia nubilalis E-and Z-pheromone races in regions of sympatry within the United States Reprint Icon - (Peer Reviewed Journal)
Coates, B.S., Johnson, H., Kim, K., Hellmich II, R.L., Abel, C.A., Mason, C., Sappington, T.W. 2013. Frequency of hybridization between Ostrinia nubilalis E-and Z-pheromone races in regions of sympatry within the United States. Ecology and Evolution. 3(8):2459-2470.
Bt crops producing Cry1Ac, Cry2Ab and Cry1F do not harm the green lacewing, chrysoperla rufilabris - (Peer Reviewed Journal)
Tian, J.C., Wang, X.P., Long, L.P., Romeis, J., Naranjo, S.E., Hellmich II, R.L., Wang, P., Earle, E.D., Shelton, A.M. 2013. Bt crops producing Cry1Ac, Cry2Ab and Cry1F do not harm the green lacewing, chrysoperla rufilabris. PLoS One. 8(3):e60125.
Vip3Aa and Cry1Ab proteins in maize reduce Fusarium ear rot and fumonisins by deterring kernel injury from multiple Lepidopteran pests - (Peer Reviewed Journal)
Bowers, E., Hellmich II, R.L., Munkvold, G.P. 2013. Vip3Aa and Cry1Ab proteins in maize reduce Fusarium ear rot and fumonisins by deterring kernel injury from multiple Lepidopteran pests. World Mycotoxin Journal. 6(2):127-135.
Deriving criteria to select arthropod species for laboratory tests to assess the ecological risks from cultivating transgenic crops - (Peer Reviewed Journal)
Romeis, J., Raybould, A., Bigler, F., Candolfi, M., Hellmich II, R.L., Huesing, J.E., Shelton, A. 2012. Deriving criteria to select arthropod species for laboratory tests to assess the ecological risks from cultivating transgenic crops. Chemosphere. 90(3):901-909.
Errors in logic and statistics plague a meta-analysis - (Peer Reviewed Journal)
Shelton, A., Naranjo, S.E., Romeis, J., Hellmich II, R.L. 2012. Errors in logic and statistics plague a meta-analysis. Environmental Entomology. 41:1047-1049.
Understanding successful resistance management: The European corn borer and Bt corn in the United States - (Peer Reviewed Journal)
Siegfried, B.D., Hellmich II, R.L. 2012. Understanding successful resistance management: The European corn borer and Bt corn in the United States. GM Crops. 3(3):184-193.
Using field-evolved resistance to Cry1F maize in a lepidopteran pest to demonstrate no adverse effects of Cry1F on one of its major predators - (Peer Reviewed Journal)
Tian, J., Collins, H.L., Romeis, J., Naranjo, S.E., Hellmich II, R.L., Shelton, A.M. 2012. Using field-evolved resistance to Cry1F maize in a lepidopteran pest to demonstrate no adverse effects of Cry1F on one of its major predators. Transgenic Research. 21(6):1303-1310.
Regulatory considerations surrounding the deployment of Bt-expressing cowpea in Africa: Report of the deliberations of an expert panel - (Peer Reviewed Journal)
Huesing, J., Romeis, J., Ellstrand, N., Raybould, A., Hellmich II, R.L., Wolt, J., Ehlers, J., Dabire, C., Fatokun, C., Hokanson, K., Ishiyaku, M.F., Margam, V., Matole, M., Mignouna, J., Nangayo, F., Ouedraogo, J., Pasquet, R., Pittendrigh, B., Schaal, B., Stein, J., Tamo, M., Murdock, L. 2012. Regulatory considerations surrounding the deployment of Bt-expressing cowpea in Africa: Report of the deliberations of an expert panel. GM Crops. 2(3):211-224.
Modeling the impact of cross-pollination and low toxin expression in corn kernels on adaptation of European corn borer (Lepidoptera: Crambidae) to transgenic insecticidal corn - (Peer Reviewed Journal)
Kang, J., Onstad, D.W., Hellmich II, R.L., Moser, S.E., Hutchison, W.D., Prasifka, J.R. 2012. Modeling the impact of cross-pollination and low toxin expression in corn kernels on adaptation of European corn borer (Lepidoptera: Crambidae) to transgenic insecticidal corn. Environmental Entomology. 41(1):200-211.
Mobilizing the genome of Lepidoptera through novel sequence gains and end creation by non-autonomous Lep1 Helitrons - (Peer Reviewed Journal)
Coates, B.S., Hellmich II, R.L., Grant, D.M., Abel, C.A. 2012. Mobilizing the genome of Lepidoptera through novel sequence gains and end creation by non-autonomous Lep1 Helitrons. DNA Research. 19(1):11-21.
Use and impact of Bt maize - (Peer Reviewed Journal)
Hellmich II, R.L., Hellmich, K.A. 2012. Use and impact of Bt maize. Nature Education. 3(5):4.
The application and performance of single nucleotide polymorphism markers for population genetic analyses of Lepidoptera - (Peer Reviewed Journal)
Coates, B.S., Bayles, D.O., Wanner, K.W., Robertson, H.M., Hellmich II, R.L., Sappington, T.W. 2011. The application and performance of single nucleotide polymorphism markers for population genetic analyses of Lepidoptera. Frontiers in Genetics. 2(38):1-10.
A single major QTL controls expression of larval Cry1F resistance trait in Ostrinia nubilalis (Lepidoptera: Crambidae) and is independent of midgut receptor genes - (Peer Reviewed Journal)
Coates, B.S., Sumerford, D.V., Lopez, M.D., Wang, H., Fraser, L.M., Kroemer, J.A., Spencer, T., Kim, K., Abel, C.A., Hellmich II, R.L., Siegfried, B.D. 2011. A single major QTL controls expression of larval Cry1F resistance trait in Ostrinia nubilalis (Lepidoptera: Crambidae) and is independent of midgut receptor genes. Genetica. 139(8):961-972.
Transcriptome sequencing, and rapid development and application of SNP markers for the legume pod borer Maruca vitrata (Lepidoptera: Crambidae) - (Peer Reviewed Journal)
Margam, V.M., Coates, B.S., Bayles, D.O., Hellmich II, R.L., Agunbiade, T., Seufferheld, M.J., Sun, W., Kroemer, J.A., Ba, M.N., Binso-Dabire, C.L., Baoua, I., Ishiyaku, M.F., Covas, F.G., Srinivasan, R., Armstrong, J., Murdock, L.L., Pittendrigh, B.R. 2011. Transcriptome sequencing, and rapid development and application of SNP markers for the legume pod borer Maruca vitrata (Lepidoptera: Crambidae). PLoS One. 6(7):e21388.
A rearrangement of the Z chromosome topology influences the sex-linked gene display in the European corn borer, Ostrinia nubilalis - (Peer Reviewed Journal)
Kroemer, J.A., Coates, B.S., Nusawardani, T., Rider Jr., S., Fraser, L.M., Hellmich II, R.L. 2011. A rearrangement of the Z chromosome topology influences the sex-linked gene display in the European corn borer, Ostrinia nubilalis. Molecular Genetics and Genomics. 286(1):37-56.
Transcript analysis and comparative evaluation of shaker and slowmo gene homologues from the European corn borer, Ostrinia nubilalis - (Peer Reviewed Journal)
Kroemer, J.A., Nusawardani, T., Rausch, M.A., Moser, S.E., Hellmich II, R.L. 2011. Transcript analysis and comparative evaluation of shaker and slowmo gene homologues from the European corn borer, Ostrinia nubilalis. Insect Molecular Biology. 20(4):493-506.
Genetic structure and gene flow among European corn borer populations from the Great Plains to the Appalachians of North America - (Peer Reviewed Journal)
Kim, K., Coates, B.S., Bagley, M.J., Hellmich II, R.L., Sappington, T.W. 2011. Genetic structure and gene flow among European corn borer populations from the Great Plains to the Appalachians of North America. Agricultural and Forest Entomology. 13(4):383-393.
Development of a Tier-1 assay for assessing the toxicity of insecticidal substances against Coleomegilla maculata - (Peer Reviewed Journal)
Li, Y., Ostrem, J., Romeis, J., Chen, M., Liu, X., Hellmich II, R.L., Shelton, A., Peng, Y. 2011. Development of a Tier-1 assay for assessing the toxicity of insecticidal substances against Coleomegilla maculata. Environmental Entomology. 40(2):496-502.
Seeds of change: corn seed mixtures for resistance management and IPM - (Peer Reviewed Journal)
Onstad, D.W., Mitchell, P.D., Hurley, T.M., Lundgren, J.G., Porter, R.P., Krupke, C.H., Spencer, J.L., Difonzo, C.D., Baute, T.S., Hellmich Ii, R.L., Buschman, L., Hutchinson, W., Tooker, J.F. 2011. Seeds of change: corn seed mixtures for resistance management and IPM. Journal of Economic Entomology. 104(2):343-352.
Mitochondrial genome sequence and expression profiling for the legume pod borer Maruca vitrata (Lepidoptera: Crambidae) - (Peer Reviewed Journal)
Margam, V.M., Coates, B.S., Hellmich II, R.L., Agunbiade, T., Seufferheld, M.J., Sun, W., Ba, M.N., Sanon, A., Binso-Dabire, C.L., Baoua, I., Ishiyaku, M.F., Covas, F.G., Srinivasan, R., Armstrong, J., Murdock, L.L., Pittendrigh, B.R. 2011. Mitochondrial genome sequence and expression profiling for the legume pod borer Maruca vitrata (Lepidoptera: Crambidae). PLoS One. 6(2):e16444.
Impact of Cry3Bb1-expressing Bt maize on adults of the western corn rootworm, Diabrotica virgifera virgifera (Coleoptera: Chrysomelidae) - (Peer Reviewed Journal)
Meissle, M., Hellmich II, R.L., Romeis, J. 2011. Impact of Cry3Bb1-expressing Bt maize on adults of the western corn rootworm, Diabrotica virgifera virgifera (Coleoptera: Chrysomelidae). Pest Management Science. 67(7):807-814.
Climate change impacts on mycotoxin risks in US maize - (Review Article)
Wu, F., Bhatnagar, D., Bui-Klimke, T., Carbone, I., Hellmich II, R.L., Munkvold, G., Paul, P., Payne, G., Takle, E. 2011. Climate change impacts on mycotoxin risks in US maize. World Mycotoxin Journal. 4(1):79-93.
The effects of diet on herbivory by a predaceous lady beetle - (Peer Reviewed Journal)
Lundgren, J.G., Moser, S., Hellmich Ii, R.L., Seagraves, M. 2011. The effects of diet on herbivory by a predaceous lady beetle. Biocontrol Science and Technology. 21(1):71-74.
Recommendations for the design of laboratory studies on non-target arthropods for risk assessment of genetically engineered plants - (Peer Reviewed Journal)
Romeis, J., Hellmich II, R.L., Candolfi, M., Carstens, K., De Schrijver, A., Gatehouse, A.M., Herman, R.A., Huesing, J.E., McLean, M.A., Raybould, A., Shelton, A., Waggoner, A. 2011. Recommendations for the design of laboratory studies on non-target arthropods for risk assessment of genetically engineered plants. Transgenic Research. 20(1):1-22.
Areawide suppression of European corn borer with Bt maize reaps savings to non-Bt maize growers Reprint Icon - (Peer Reviewed Journal)
Hutchison, W.D., Burkness, E.C., Mitchell, P.D., Moon, R.D., Leslie, T.W., Fleischer, S.J., Abrahamson, M., Hamilton, K.L., Steffey, K.L., Gray, M.E., Hellmich II, R.L., Kaster, V., Hunt, T.E., Wright, R.J., Pecinovsky, K.T., Rabaey, T.L., Flood, B.R., Raun, E.S. 2010. Areawide suppression of European corn borer with Bt maize reaps savings to non-Bt maize growers. Science. 330:222-225.
A novel class of miniature inverted repeat transposable elements (MITEs) that contain hitchhiking (GTCY)n microsatellites - (Peer Reviewed Journal)
Coates, B.S., Kroemer, J.A., Sumerford, D.V., Hellmich II, R.L. 2011. A novel class of miniature inverted repeat transposable elements (MITEs) that contain hitchhiking (GTCY)n microsatellites. Insect Molecular Biology. 20(1):15-27.
Geographic distribution of phylogenetically-distinct legume pod borer, Maruca vitrata (Lepidoptera: Pyraloidea: Crambidae) - (Peer Reviewed Journal)
Margam, V.M., Coates, B.S., Ba, M.N., Sun, W., Binso-Dabire, C.L., Baoua, I., Ishiyaku, M.F., Shukle, J.H., Hellmich II, R.L., Covas, F.G., Ramasamy, S., Armstrong, J., Pittendrigh, B.R., Murdock, L.L. 2011. Geographic distribution of phylogenetically-distinct legume pod borer, Maruca vitrata (Lepidoptera: Pyraloidea: Crambidae). Molecular Biology Reports. 38(1):893-903.
A Helitron-like Transposon Superfamily from Lepidoptera Disrupts (GAAA)n Microsatellites and is Responsible for Flanking Sequence Similarity within a Microsatellite Family - (Peer Reviewed Journal)
Coates, B.S., Sumerford, D.V., Hellmich II, R.L., Lewis, L.C. 2010. A Helitron-like Transposon Superfamily from Lepidoptera Disrupts (GAAA)n Microsatellites and is Responsible for Flanking Sequence Similarity within a Microsatellite Family. Journal of Molecular Evolution. 70(3):278-288.
Appropriate Analytical Methods are Necessary to Assess Non-target Effects of Insecticidal Proteins in GM Crops Through Meta-Analysis (response to Andow et al.): Letter to the Editor - (Peer Reviewed Journal)
Shelton, A.M., Naranjo, S.E., Romeis, J., Hellmich Ii, R.L., Wolt, J.D., Federici, B.A., Albajes, R., Bigler, F., Burgess, E., Dively, G., Gatehouse, A.M., Malone, L.A., Roush, R., Sears, M., Sehnal, F., Ferry, N., Bell, H. Appropriate Analytical Methods are Necessary to Assess Non-target Effects of Insecticidal Proteins in GM Crops Through Meta-Analysis (response to Andow et al.): Letter to the Editor. Environmental Entomology. (38)6: 1533-1538 2009.
Video-tracking and on-plant tests show Cry1Ab resistance influences behavior and survival of neonate Ostrinia nubilalis following exposure to Bt maize - (Peer Reviewed Journal)
Prasifka, J.R., Hellmich Ii, R.L., Crespo, A.L., Siegfried, B.D., Onstad, D.W. 2010. Video-tracking and on-plant tests show Cry1Ab resistance influences behavior and survival of neonate Ostrinia nubilalis following exposure to Bt maize. Journal of Insect Behavior. 23(1):1-11.
Letter to The Editor: Setting the record straight: a rebuttal to an erroneous analysis on transgenic insecticidal crops and natural enemies. - (Peer Reviewed Journal)
Shelton, A.M., Naranjo, S.E., Romeis, J., Hellmich Ii, R.L. 2009. Letter to The Editor: Setting the record straight: a rebuttal to an erroneous analysis on transgenic insecticidal crops and natural enemies. Transgenic Research (2009) 18:317-322
Spatial and Temporal Genetic Analyses Show High Gene Flow Among European Corn Borer (Lepidoptera: Crambidae) Populations Across the Central U.S. Corn Belt - (Peer Reviewed Journal)
Kim, K.S., Bagley, M.J., Coates, B.S., Hellmich II, R.L., Sappington, T.W. 2009. Spatial and Temporal Genetic Analyses Show High Gene Flow Among European Corn Borer (Lepidoptera: Crambidae) Populations Across the Central U.S. Corn Belt. Environmental Entomology. 38(4):1312-1323.
Bacillus thuringiensis Resistance Influences European Corn Borer (Lepidoptera: Crambidae) Larval Behavior after Exposure to Cry1Ab - (Peer Reviewed Journal)
Prasifka, J.R., Hellmich II, R.L., Sumerford, D.V., Siegfried, B.D. 2009. Bacillus thuringiensis Resistance Influences European Corn Borer (Lepidoptera: Crambidae) Larval Behavior after Exposure to Cry1Ab. Journal of Economic Entomology. 102(2):781-787.
Repetitive Genomic Elements in a European Corn Borer, Ostrinia nubilalis, BAC Library were Indicated by BAC End Sequencing and Development of Sequence Tag Site Markers: Implications for Lepidopteran Genomic Research - (Peer Reviewed Journal)
Coates, B.S., Sumerford, D.V., Hellmich II, R.L., Lewis, L.C. 2009. Repetitive Genomic Elements in a European Corn Borer, Ostrinia nubilalis, Bacterial Artificial Chromosome Library were Indicated by Bacterial Artificial Chromosome End Sequencing and Development of Sequence Tag Site Markers: Implications for Lepidopteran Genomic Research. Genome. 52(1):57-67.
Ionizing radiation as a phytosanitary treatment against European corn borer (Lepidoptera: Crambidae) in ambient, low oxygen, and cold conditions - (Peer Reviewed Journal)
Hallman, G.J., Hellmich II, R.L. 2009. Ionizing radiation as a phytosanitary treatment against European corn borer (Lepidoptera: Crambidae) in ambient, low oxygen, and cold conditions. Journal of Economic Entomology. 102:64-68.
Detection of European Corn Borer Infestation in Iowa Corn Plots using Spectral Vegetation Indices Derived from Airborne Hyperspectral Imagery - (Peer Reviewed Journal)
Carroll, M.W., Glaser, J.A., Hellmich II, R.L., Hunt, T.E., Calvin, D., Sappington, T.W., Copenhaver, K., Fridgen, J. 2009. Detection of European Corn Borer Infestation in Iowa Corn Plots using Spectral Vegetation Indices Derived from Airborne Hyperspectral Imagery. Journal of Economic Entomology. 101(5):1614-1623.
Mining an Ostrinia nubilalis Midgut Expressed Sequence Tag (EST) Library for Candidate Genes and Single Nucleotide Polymorphisms (SNPs) - (Peer Reviewed Journal)
Coates, B.S., Sumerford, D.V., Hellmich II, R.L., Lewis, L.C. 2008. Mining an Ostrinia nubilalis Midgut Expressed Sequence Tag (EST) Library for Candidate Genes and Single Nucleotide Polymorphisms (SNPs). Insect Molecular Biology. 17(6):607-620.
Non-target Risk Assessment for Crops Engineered for Insect Resistance - (Peer Reviewed Journal)
Hellmich II, R.L., Gorecka, J. 2008. Non-target Risk Assessment for Crops Engineered for Insect Resistance. Annals of Warsaw University of Life Sciences. 29:8-17.
Introduction of a new issue paper from CAST - Implications of gene flow in the scale-up and commercial use of biotechnology-derived crops: Economic and Policy Considerations - (Proceedings)
Gealy, D.R., Bradford, K., Hall, L., Hellmich Ii, R.L., Raybould, A., Wolt, J., Zilberman, D. 2007. Implications of gene flow in the scale-up and commercial use of biotechnology-derived crops: Economic and policy considerations. Proceedings 2007 North Central Weed Science Society Crop Gene Flow Symposium, December 12-13, 2007, St. Louis, MO.
Assessment of Risk of Insect-resistant Transgenic Crops to Nontarget Arthropods - (Peer Reviewed Journal)
Romeis, J., Bartsch, D., Bigler, F., Candolfi, M., Gielkens, M.C., Hartley, S.E., Hellmich II, R.L., Huesing, J.E., Jepson, P.C., Layton, R., Quemada, H., Raybould, A., Rose, R., Schiemann, J., Sears, M., Shelton, A., Sweet, J., Vaituzis, Z., Wolt, J. 2008. Assessment of Risk of Insect-resistant Transgenic Crops to Nontarget Arthropods. Nature Biotechnology. 26(2):203-208.
Selection of Nontarget Arthropod Taxa for Field Research on Transgenic Insecticidal Crops: Using Empirical Data and Statistical Power - (Peer Reviewed Journal)
Prasifka, J.R., Hellmich II, R.L., Dively, G.P., Higgins, L.S., Dixon, P.M., Duan, J.J. 2008. Selection of Nontarget Arthropod Taxa for Field Research on Transgenic Insecticidal Crops: Using Empirical Data and Statistical Power. Environmental Entomology. 37(1):1-10.
Isolation and Characterization of Microsatellite Loci from the European Corn Borer, Ostrinia nubilalis (Hubner) (Insecta: Lepidoptera: Crambidae) - (Peer Reviewed Journal)
Kim, K.S., Coates, B.S., Hellmich II, R.L., Sumerford, D.V., Sappington, T.W. 2008. Isolation and Characterization of Microsatellite Loci from the European Corn Borer, Ostrinia nubilalis (Hubner) (Insecta: Lepidoptera: Crambidae). Molecular Ecology Resources. 8(2):409-411.
Effects of Insecticide Exposure on Movement and Population Size Estimates of Predatory Ground Beetles (Coleoptera: Carabidae) - (Peer Reviewed Journal)
Prasifka, J.R., Lopez, M.D., Hellmich II, R.L., Prasifka, P.L. 2007. Effects of Insecticide Exposure on Movement and Population Size Estimates of Predatory Ground Beetles (Coleoptera: Carabidae). Pest Management Science. 64:30-36.
Influence of Plant Severing on Movement of Ostrinia Nubilalis Larvae in Zea Mays Hybrid Seed Production Fields - (Peer Reviewed Journal)
Reardon, K.T., Hellmich II, R.L., Sumerford, D.V., Lewis, L.C., Reardon, B.J., Calvin, D.D. 2007. Influence of Plant Severing on Movement of Ostrinia nubilalis Larvae in Zea mays Hybrid Seed Production Fields. Journal of Economic Entomology. 100(4):1129-1135.
A Beta-1,3-Galactosyltransferase and Brainiac/bre5 Homolog Expressed in the Midgut Did Not Contribute to a Cry1ab Toxin Resistance Trait in Ostrinia Nubilalis - (Peer Reviewed Journal)
Coates, B.S., Sumerford, D.V., Hellmich II, R.L., Lewis, L.C. 2007. A Beta-1,3-galactosyltransferase and brainiac/bre5 homolog expressed in the midgut did not contribute to a Cry1Ab toxin resistance trait in Ostrinia nubilalis. Insect Biochemistry and Molecular Biology. 37(4):346-355.
Comparison of Pitfall Traps and Litter Bags for Sampling Ground-Dwelling Arthropods - (Peer Reviewed Journal)
Prasifka, J.R., Lopez, M.D., Hellmich II, R.L., Lewis, L.C., Dively, G.P. 2007. Comparison of pitfall traps and litter bags for sampling ground-dwelling arthropods. Journal of Applied Entomology. 131:115-120.
Effects of Cry1Ab-Expressing Corn Anthers on the Movement of Monarch Butterfly Larvae - (Peer Reviewed Journal)
Prasifka, P.L., Hellmich II, R.L., Prasifka, J.R., Lewis, L.C. 2007. Effects of Cry1Ab-Expressing Corn Anthers on the Movement of Monarch Butterfly Larvae. Environmental Entomology. 36(1):228-233.
Sampling European Corn Borer (Lepidoptera: Crambidae) Larvae from Seed Corn Drying Bins for Bt Resistance Monitoring - (Peer Reviewed Journal)
Prasifka, J.R., Sumerford, D.V., Hellmich II, R.L., Lewis, L.C., Calvin, D.D. 2006. Sampling European Corn Borer (Lepidoptera: Crambidae) Larvae from Seed Corn Drying Bins for Bt Resistance Monitoring. Southwestern Entomologist. 31(4):269-279.
Effects of Living Mulches on Predator Abundance and Sentinel Prey in a Corn-Soybean-Forage Rotation - (Peer Reviewed Journal)
Prasifka, J.R., Schmidt, N.P., Kohler, K.A., O'Neal, M.E., Hellmich II, R.L., Singer, J.W. 2006. Effects of living mulches on predator abundance and sentinel prey in a corn-soybean-forage rotation. Environmental Entomology. 35(5):1423-1431.
European Corn Borers: a Diminished Insect Threat from Now On? - (Proceedings) - (01-Nov-05)
Assessing Carabids Contribution to Ecosystem Services: Does It Matter If There Are More Beetles? - (Peer Reviewed Journal)
O'Neal, M.E., Prasifka, J.R., Schmidt, N.P., Singer, J.W., Hellmich II, R.L., Kohler, K.A. 2006. Assessing carabids contribution to ecosystem services: Does it matter if there are more beetles? American Entomologist. 51:231-233.
Sequence Variation in Trypsin and Chymotrypsin-Like Cdnas from the Midgut of Ostrinia Nubilalis: Methods for Allelic Differentiation of Candidate Bacillus Thuringiensis Resistance Genes - (Peer Reviewed Journal)
Coates, B.S., Hellmich II, R.L., Lewis, L.C. 2006. Sequence variation in trypsin- and chymotrypsin-like cDNAs from the midgut of Ostrinia nubilalis: methods for allelic differentiation of candidate Bacillus thuringiensis resistance genes. Insect Molecular Biology. 15(1):13-24.
A Framework for Evaluating Possible Non-Target Effects of Transgenic Corn in the United States: Standardizing Laboratory Tests - (Proceedings) - (01-Jun-05)
Effects on Fitness and Behavior of Monarch Butterfly Larvae Exposed to a Combination of Cry1ab-Expressing Corn Anthers and Pollen - (Peer Reviewed Journal)
Anderson, P.L., Hellmich II, R.L., Prasifka, J.R., Lewis, L.C. 2005. Effects on fitness and behavior of monarch butterfly larvae exposed to a combination of Cry1ab-expressing corn anthers and pollen. Environmental Entomology. 34:944-952.
Assessing the Effects of Pest Management on Non-Target Arthropods: the Influence of Plot Size and Isolation - (Peer Reviewed Journal)
Prasifka, J.R., Hellmich II, R.L., Dively, G.P., Lewis, L.C. 2005. Assessing the effects of pest management on non-target arthropods: the influence of plot size and isolation. Environmental Entomology. 34:1181-1192.
Assessing Ground Beetle Contribution to Ecosystem Services: Does It Matter If There Are More Ground Beetles? - (Abstract Only)
O'Neal, M.E., Singer, J.W., Schmidt, N., Prasifka, J.R., Hellmich II, R.L. 2005. Assessing ground beetle contribution to ecosystem services: does it matter if there are more ground beetles?. [abstract]. NCB-ESA North Central Branch Entomological Society of America. Paper No. 102.
Two Differentially Expressed Ostrinia Nubilalis Ommochrome-Binding Protein-Like Genes (Obp1 and Obp2) in Larval Fat Body - (Peer Reviewed Journal)
Coates, B.S., Hellmich II, R.L., Lewis, L.C. 2005. Two differentially expressed Ostrinia nubilalis ommochrome-binding protein-like genes (obp1 and obp2) in larval fat body. Journal of Insect Science. 5:19.
Performance of Families of Ostrinia Nubilalis (Hubner) (Lepidoptera: Crambidae) on Lyophilized Corn Tissue: Tool for Selection Experiments to Create Resistant Colonies - (Peer Reviewed Journal) - (29-Nov-04)
Integration of Bt Maize in Ipm Systems: a U.S. Perspective - (Proceedings)
Hellmich II, R.L., Calvin, D.D., Russo, J.M., Lewis, L.C. 2005. Integration of Bt maize in IPM systems: A U.S. perspective. In: Proceedings of the Second International Symposium on Biological Control of Arthropods, September 12-16, 2005, Davos, Switzerland. 1:356-361.
Integration of Bt Maize in Ipm Systems: U.S. Perspective - (Abstract Only) - (26-Nov-04)
The Effect of Perennial Cover Crops on Natural Enemy Communities in Corn and Soybean - (Abstract Only)
Schmidt, N., Oneal, M., Singer, J.W., Kohler, K.A., Prasifka, J.R., Hellmich Ii, R.L. 2004. The effect of perennial cover crops on natural enemy communities in corn and soybean [abstract]. Entomological Society of America Annual Meeting. Poster No. D0081.
Sequence Variation in the Cadherin Gene of Ostrinia Nubilalis: a Tool for Field Monitoring - (Peer Reviewed Journal)
Coates, B.S., Sumerford, D.V., Hellmich, II, R.L., Lewis, L.C. 2005. Sequence variation in the cadherin gene of Ostrinia nubilalis: A tool for field monitoring. Insect Biochemistry and Molecular Biology. 35:129-139.
Partial Mitochondrial Genome Sequences of Ostrinia Nubilalis and Ostrinia Furnicalis - (Peer Reviewed Journal)
Coates, B.S., Sumerford, D.V., Hellmich II, R.L., Lewis, L.C. 2004. Partial mitochondrial genome sequences of Ostrinia nubilalis and Ostrinia furnicalis. International Journal of Biological Sciences. 1:13-18.
Transgenic Plants and Biosafety - (Abstract Only) - (01-Sep-04)
Developing Guidelines for Monitoring Non-Target Effects of Bt Crops - (Proceedings) - (13-Aug-04)
Polymorphic Ca/gt and Ga/ct Microsatellite Loci for Ostrinia Nubilalis (Lepidoptera: Crambidae) - (Peer Reviewed Journal)
Coates, B.S., Hellmich II, R.L., Lewis, L.C. 2005. Polymorphic CA/GT and GA/CT microsatellite loci for Ostrinia nubilalis (Lepidoptera: Crambidae). Molecular Ecology Notes. 5(1):10-12.
Challenges for Field Research on Non-Target Effects of Bt Crops - (Abstract Only) - (03-Aug-04)
Geographic and Voltinism Differentiation among North American Ostrinia Nubilalis (European Corn Borer) Mitochondrial Cytochrome C Oxidase Haplotypes - (Peer Reviewed Journal)
Coates, B.S., Sumerford, D.V., Hellmich II, R.L. 2004. Geographic and voltinism differentiation among North American Ostrinia nubilalis (European corn borer) mitochondrial cytochrome c oxidase haplotypes. Journal of Insect Science. 4:35:1-9.
Effects on Monarch Butterfly Larvae (Lepidoptera: Danaidae) after Continuous Exposure to Cry1ab-Expressing Corn During Anthesis - (Peer Reviewed Journal)
Dively, G.P., Rose, R., Sears, M.K., Hellmich II, R.L., Stanley-Horn, D.E., Calvin, D.D., Russo, J.M., Anderson, P.L. 2004. Effects on monarch butterfly larvae (Lepidoptera: Danaidae) after continuous exposure to Cry1Ab-expressing corn during anthesis. Environmental Entomology. 33:1116-1125.
Effects of Cry1ab-Expressing Corn Anthers on Monarch Butterfly Larvae - (Peer Reviewed Journal)
Anderson, P.L., Hellmich II, R.L., Sears, M.K., Sumerford, D.V., Lewis, L.C. 2004. Effects of Cry1Ab-expressing corn anthers on monarch butterfly larvae. Environmental Entomology. 33:1109-1115.
Growth, Development, and Survival of Nosema Pyrausta-Infected European Corn Borers (Lepidoptera: Crambidae) Reared on Meridic Diet and Cry1ab - (Peer Reviewed Journal)
Reardon, B.J., Hellmich II, R.L., Sumerford, D.V., Lewis, L.C. 2004. Growth, development, and survival of Nosema pyrausta-infected European corn borers (Lepidoptera: Crambidae) reared on meridic diet and Cry1Ab. Journal of Economic Entomology. 97:1198-1201.
Effects of Bt Plants on Non-Target Herbivores - (Book / Chapter)
Hellmich II, R.L., Prasifka, J.R., Anderson, P.L. 2004. Effects of Bt plants on non-target herbivores. In: van Emden, H.F., Gray, A.J., editors. GM Crops-Ecological Dimensions. Wellesbourne, Warwick, UK: Association of Applied Biologists. p. 75-80.
Two Sex-Chromosome-Linked Microsatellite Loci Show Geographic Variance among North American Ostrinia Nubilalis - (Peer Reviewed Journal)
COATES, B.S., HELLMICH II, R.L. TWO SEX-CHROMOSOME-LINKED MICROSATELLITE LOCI SHOW GEOGRAPHIC VARIANCE AMONG NORTH AMERICAN OSTRINIA NUBILALIS. AVAILABLE FROM insectscience.org/3.29. JOURNAL OF INSECT SCIENCE. 2003. V. 3:29. P. 1-6.
Role of Biotechnology for Sustainable Agriculture - (Abstract Only) - (11-Apr-03)
Bt Corn, Refuges, and Monarch Butterflies: Challenges for Entomologists and Growers - (Proceedings) - (07-Jan-03)
Monarch Butterflies and Bt Corn: Replacing Hoopla with Science - (Proceedings)
HELLMICH II, R.L., LEWIS, L.C., PLEASANTS, J.M. MONARCH BUTTERFLIES AND BT CORN: REPLACING HOOPLA WITH SCIENCE. INTEGRATED CROP MANAGEMENT CONFERENCE PROCEEDINGS. 2002. P. 25-28.
Current Resistance Management Strategies for Bt Corn in the United States - (Book / Chapter)
Matten, S.M., Hellmich II, R.L., Reynolds, A. 2004. Current resistance management strategies for Bt corn in the United States. In: Koul, O., Dhaliwal, G.S., editors. Transgenic Crop Protection: Concepts and Strategies. Chapter 8. Enfield, NH, USA/Plymouth, UK: Science Publishers, Inc. p. 261-288.
Insuring the Stewardship of Bt Corn: a Carrot Versus a Stick - (Peer Reviewed Journal)
MITCHELL, P.D., HURLEY, T.M., BABCOCK, B.A., HELLMICH II, R.L. INSURING THE STEWARDSHIP OF BT CORN: A CARROT VERSUS A STICK. JOURNAL OF AGRICULTURAL AND RESOURCE ECONOMICS. 2002. V. 27. P. 390-405.
Monarch Butterflies and Bt Corn Pollen: Phenology and Movement Considerations - (Proceedings)
HELLMICH II, R.L., PLEASANTS, J.M. MONARCH BUTTERFLIES AND BT CORN POLLEN: PHENOLOGY AND MOVEMENT CONSIDERATIONS. BIOMETEOROLOGY INTERNATIONAL CONGRESS PROCEEDINGS. 2002. P. 244-246.
Managing the Risk of European Corn Borer Resistance to Bt Corn - (Book / Chapter)
HURLEY, T.M., SECCHI, S., BABCOCK, B.A., HELLMICH II, R.L. MANAGING THE RISK OF EUROPEAN CORN BORER RESISTANCE TO BT CORN. THE ECONOMICS OF MODELING ENVIRONMENTAL IMPACTS OF AGRICULTURAL BIOTECHNOLOGIES. 2002. P. 171-193.
Effects of Bt Plants on Non-Target Herbivores - (Abstract Only) - (11-Sep-02)
Larval Distribution and Survival of Second Generation European Corn Borer, Ostrinia Nubilalis (Hubner) (Lepidoptera: Crambidae) on Event 176 Bt Corn - (Peer Reviewed Journal)
ZOERB, A.C., SPENCER, T., HELLMICH II, R.L., WRIGHT, R.J., SIEGFRIED, B.D. LARVAL DISTRIBUTION AND SURVIVAL OF SECOND GENERATION EUROPEAN CORN BORER, OSTRINIA NUBILALIS (HUBNER) (LEPIDOPTERA: CRAMBIDAE) ON EVENT 176 BT CORN. CROP SCIENCE. 2003. V. 22. P. 179-184.
Nuclear Small Subunit Rrna Group I Intron Variation among Beauveria Spp Provide Tools for Strain Identification and Evidence of Horizontal Transfer - (Peer Reviewed Journal)
COATES, B.S., HELLMICH II, R.L., LEWIS, L.C. NUCLEAR SMALL SUBUNIT RRNA GROUP I INTRON VARIATION AMONG BEAUVERIA SPP PROVIDE TOOLS FOR STRAIN IDENTIFICATION AND EVIDENCE OF HORIZONTAL TRANSFER. CURRENT GENETICS. 2002. V. 41. P. 414-424.
Biotechnology and the European Corn Borer: Measuring Historical Farmer Perceptions and Adoption of Transgenic Bt Corn As a Pest Management Strategy - (Peer Reviewed Journal)
PILCHER, C.D., RICE, M.E., HIGGINS, R.A., STEFFEY, K.L., HELLMICH II, R.L., WITKOWSKI, J., CALVIN, D., OSTLIE, K.R., GRAY, M. BIOTECHNOLOGY AND THE EUROPEAN CORN BORER: MEASURING HISTORICAL FARMER PERCEPTIONS AND ADOPTION OF TRANSGENIC BT CORN AS A PEST MANAGEMENT STRATEGY. JOURNAL OF ECONOMIC ENTOMOLOGY. 2002. V. 95. P. 878-892.
Butterflies, Bees and Bt Maize: Lessons Learned from the Monarch Butterfly - (Abstract Only) - (31-Oct-01)
Developing Practical Recommendations for Managing Insect Resistance to Bt Transgenic Maize - (Abstract Only) - (26-Aug-01)
Impact of Bt Corn Pollen on Monarch Butterfly Populations: a Risk Assessment - (Peer Reviewed Journal) - (22-Aug-01)
Assessing the Impact of Cry1ab-Expressing Corn Pollen on Monarch Butterfly Larvae in Field Studies - (Peer Reviewed Journal) - (22-Aug-01)
Beauveria Bassiana Haplotype Determination Based on Nuclear Rdna Nternal Transcribed Spacer Pcr-Rflp - (Peer Reviewed Journal) - (20-Aug-01)
Bt Corn and the Monarch Butterfly: Research Update - (Book / Chapter) - (19-Aug-01)
Monarch Caterpillar Sensitivity to Bacillus Thuringiensis Purified Proteinsand Pollen - (Peer Reviewed Journal) - (17-Aug-01)
Corn Pollen Deposition on Milkweeds in and Near Cornfields - (Peer Reviewed Journal) - (17-Aug-01)
Temporal and Spatial Overlap Between Monarch Larvae and Corn Pollen - (Peer Reviewed Journal) - (17-Aug-01)
Dispersal of Adult European Corn Borer (Lepidoptera: Crambidae) Within and Proximal to Irrigated and Non-Irrigated Corn - (Peer Reviewed Journal) - (16-Jun-01)
Bt Corn Monarch Butterfly: Research Update - (Proceedings) - (18-Dec-00)
Of Monarchs and Men:possible Influences of Bt Corn in the Agricultural Community - (Proceedings) - (29-Nov-00)
Practical Aspects of Managing Transgenic Crops to Combat Pest Resistance: North American Corn - (Abstract Only) - (15-Oct-00)
Consequences for Non-Target Insects: Monarch Butterfly Update - (Abstract Only) - (15-Oct-00)
Economic Evaluation of Bt Corn Refuge Insurance - (Peer Reviewed Journal) - (15-Oct-00)
Late-Instar European Corn Borer (Lepidoptera:crambidae) Tunneling and Survival in Various Transgenic Corn Hybrids - (Peer Reviewed Journal) - (05-May-00)
Evaluation of Oil-Soluble Dyes for Marking European Corn Borer Lepidoptera: Crambidae - (Peer Reviewed Journal) - (15-Mar-00)
Frequency of Resistance Alleles to Bacillus Thuringiensis Toxin in An Iowa Population of European Corn Borer - (Peer Reviewed Journal) - (31-Jan-00)
Effects of Transgenic Bacillus Thuringiensis (Berliner) Maize Grain on Bt-Susceptible Plodia Interpunctella - (Peer Reviewed Journal) - (17-Jan-00)
Genetically Modified, Insect Resistant Corn: Its Implications for Disease Management - (Other) - (15-Oct-99)
Refuge Issues - (Proceedings) - (01-Sep-99)
Managing the Risk of European Corn Borer Resistance to Transgenic Corn: An Assessment of Controversial Refuge Recommendations - (Other) - (01-Jul-99)
Managing the Risk of European Corn Borer Resistance to Transgenic Corn: An Assessment of Refuge Recommendations - (Other) - (01-Jul-99)
Oviposition by European Corn Borer (Lepidoptera: Crambidae) in Response to Various Transgenic Corn Events - (Peer Reviewed Journal) - (17-May-99)
Establishing Research Priorities for Managing Insect Resistance to Transgenic Corn - (Abstract Only) - (01-Dec-98)
Comparison of Fumonisin Concentrations in Kernels of Transgenic Bt Maize Hybrids and Nontransgenic Hybrids - (Peer Reviewed Journal) - (28-Oct-98)
Stalk Boring Caterpillars - (Book / Chapter) - (15-Oct-98)
Injury to Strawberry Crowns Caused by European Corn Borer Larvae - (Popular Publication) - (21-Jul-98)
Reduced Fusarium Kernel Rot and Symptomless Infection in Kernels of Maize Genetically Engineered for European Corn Borer Resistance - (Peer Reviewed Journal) - (11-Oct-97)
Bt Corn and European Corn Borer: Long-Term Success Through Resistance Management - (Monograph) - (01-Oct-97)
Influencing European Corn Borer, Ostrinia Nubilalis (Hubner), Aggregation Sites in Small Grain Crops - (Peer Reviewed Journal) - (04-Aug-97)
Nc-205 Resistance Management Meeting: a Forum for Industry, Academics and Epa - (Abstract Only) - (21-Mar-97)
Bt Corn and Management of the European Corn Borer: Perspectives of a Research Entomologist - (Proceedings) - (19-Nov-96)
Gibberella Infection in Kernels of Transgenic (Bt) Maize - (Abstract Only) - (15-Oct-96)
Last Modified: 3/1/2011
Footer Content Back to Top of Page