Alumni

Julie Graesch

Julie completed a Master of Agriculture in professional agriculture while working full time at BASF.  Her research tested novel products for management of twospotted spider mites in greenhouses.

Stephen Thompson

Area of Expertise: 
Insect Resistance Management
M.S. in Entomology from Iowa State University

I am characterizing the genetics of western corn rootworm strains that have been selected for survival on maize expressing the Cry34/35Ab1 insecticidal proteins.  I also work full time for DuPont-Pioneer.

Dr. Jennifer Deitloff

Area of Expertise: 
Ecology and Evolution
Postdoctoral Research Associate

Dr. Deitloff's postdoctoral research tested how non-Bt refuges affected the evolution of resistance to Bt corn by western corn rootworm.  She also conducted research on the potential for assortative mating among Bt-resistant and Bt-susceptible insects.

Amanda (Hoffmann) Sorgatz

Area of Expertise: 
Fitness Costs of Bt Resistance
M.S. in Entomology from Iowa State University

For her master's degree, Amanda tested whether the ecological important variables of host-plant resistance and entomopathogens could affect the magnitude and dominance of fitness costs associated with resistance to Cry3Bb1 in western corn rootworm.

Dr. Jennifer Maxwell

Area of Expertise: 
Insect Resistance Management and Insect Pathology
Postdoctoral Research Associate

During her time as a postdoctoral scientist at Iowa State University, Dr. Maxwell studied a diversity of topics, including fitness costs of Bt resistance in western corn rootworm and European corn borer, tritrophic interactions among soil-borne entomopathogens, corn and western corn rootworm, and the application of integrated refuges and Bt pyramids to manage the evolution of resistance.
 

Melissa Rudeen

Area of Expertise: 
Insect Pathology
M.S. in Entomology from Iowa State University

Melissa completed a master's degree in entomology.  She studied tritrophic interactions among western corn rootworm, soil-borne entomopathogens and Bt corn. 

David Ingber

Area of Expertise: 
Insect Resistance Management
M.S. in Entomology from Iowa State University

David's M.S. research focused on resistance of the western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, to transgenic corn plants producing the Bt toxin Cry3Bb1. He studied the genetic dominance and fitness costs of Bt resistance in two laboratory strains of WCR with field-derived alleles.

Ryan Keweshan

Ryan completed a master's degree studying interactions of western corn rootworm with Bt corn.  He measured that standing level of genetic variation for larval survival on CryBb1 corn and corn that was pyramided to produce both Cry34/35Ab1 and Cry3Bb1.  He also quantified the level of survival for western and northern corn rootworm on Bt and non-Bt corn in the field.

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