Faculty Research

 

 

Specific Areas of Research:

          
  • Systematics and ecology focused on biodiversity, biogeography and the interactions of the often overlooked world of micro-arthropods, with a special emphasis on Acari (mites). We are based in the Department of Entomology at the University of Arkansas, situated in the heart of the Interior Highlands.
  • Uniting modern tools of phylogenomics and morphology to address the evolution of acarology's most charismatic members: velvet mites, chiggers, and water mites.
                   

Specific Areas of Research:

  • The molecular and physiological mode of action of Mi-1.2, a resistance gene (R-gene) in tomato that confers resistance to root-knot nematodes, aphids, whiteflies, and psyllids.
  • The impact of the jasmonate-, ethylene-, and salicylate-dependent signaling pathways on plant-aphid interactions in tomato and other plant species.
  • Variation among aphid populations in their responses to host plant resistance and their ability to induce symptom development in their host plants.

Specific Areas of Research:

  • 2005, Arkansas Rice Promotion Board grant: Dr. John Bernhardt (Rice Research and Extension Center) and Dr. Rolfe Bryant (Dale Bumpers National Rice Research Center) on rice stink bugs. ISweep net sampling captured more rice stink bug at 9 am and 7 pm than at 1:30 pm.
  • 2004-2005, Southern Region SARE Grant - "The Southern Region Organic Fruit Production Initiative: Identifying barriers, needed research, markets, and opportunities" and Southern Region IPM Center grant - "Development of Southern Region IPM Organic Tree Fruit Working Group"
  • 2005, USDA-CSREES/MAP-Armenia + University of Arkansas grant for a Diversified IPM Program and grant-in-aid from Novartis Consumer Health/Gerber Products Co. and Entosect Ltd., UK: - Dr. Karen Underwood (Exosect Ltd., UK), Dr. Anzhela Azizyan (Institute of Zoology of Armenian National Academy of Sciences, Yerevan, Armenia), Ed Gay (fruit grower in Springdale, AR) and John Aselage (grower and Agriculture Research Coordinator, Novartis Consumer Health/Gerber Products Co.) collaborated on alternative PM programs for fruit pests using: pheromone + kairomone-baited trap trees for concentrating attack by plum curculio, studied efficacy of Cyd-X granulosis virus against codling moth and Xentari (Bt) against Oriental fruit moth, efficacy studies of a new mating disruption system (Exosex dispensers) against grape vine berry moth in Armenia and grape berry moth, codling moth and Oriental fruit moth in Arkansas.
  • 2005, IR-4 Minor Use Pesticides Grant Program: We tested several new chemistry insecticides against raspberry crown borer, stink bugs and thrips on blackberry and reported to IR4. Also, attended the IR4 Workshop in Orlando, FL in September where I participated in categorizing various insecticide and commodities for funding, e.g., A (high priority), B (possibility for funding) or C (no funding).

Specific Areas of Research:

  • Ecotoxicology and pesticide risk assessment.
  • Bioecology and ecosystem services of native and alternative pollinators.
  • Pollinator health, management, and conservation.
  • Integration of pollinator health into IPM programs and crop production.
  • Development and implementation of ecologically-based IPM programs.
  • Insect ecology, modeling phenology, and insect development.
  • Arthropod sampling and monitoring.
  • Insecticide resistance.
  • Host-plant resistance.

Specific Areas of Research:

  • Medical/Veterinary Entomology

Specific Areas of Research:

  • Applied research in major row crops related to development and implementation of IPM, evaluation of new and current technology for insect control.

Specific Areas of Research:

  • Conducted basis and applied research on epizootiology of fungal pathogens of cotton aphid, Aphis gossypii, on cotton; three-cornered alfalfa hopper on soybean; and spinach aphid, Myzus persicae, on spinach.
  • Conducted field research on adjusted economic thresholds for Helicoverpa zea on soybean, grain sorghum, and cotton when Bacillus thuringiensis or Heliothis nuclear polyhedrosis virus are used as control agents.
  • Conducted research on causes of pupal attrition in H. zea pupae in corn.
  • Studied diplogasterid nematode, Chroniodiplogaster aerivora found infecting H. zea pupae in corn.
  • Surveyed lesser mealworm populations for parasitic protozoa.
  • Described new species of pyemotid mite parasitizing eggs of tenebrionids.
  • Conducted basic and applied research on fungal pathogens of house flies, mosquitoes, and litter beetles.
  • Involved in research on management of litter beetles in poultry houses.

Specific Areas of Research:

  • Red Oak Borer: Population dynamics, distribution, and geospatial analysis.
  • Southern Pine Beetle: Biological control through enhancement of parasitoid effectiveness.
  • Southern Pine Beetle: Population and infestation growth modeling.
  • Gypsy Moth: Effects of Bt eradication sprays on nontarget canopy arthropods and their bird predators.

Specific Areas of Research:

  • Genetic variation and molecular diagnostics of economically important termites.
  • Molecular diagnostics of pathogens carried by filth flies.
  • Efficacy of insecticides for controlling insects in the urban environment.
  • Population genetics of Aedes vexans.

Specific Areas of Research:

  • Integrated Pest Management Tactics for Insect Pests of Mid-South Cotton

 

Specific Areas of Research:

  • Basic and applied research on biological control of insects and weed pests, and on the biology of parasitic and predaceous insects. His interests include biological control of insects and weeds; and issues concerning biofuel crops, invasion biology, and pest management.