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Stefan Jaronski

Photograph of beauveria bassiana fungus
CONTACT INFORMATION
Research Entomologist
Phone: 406.433.9486
Fax: 406.433.5038
E-mail: sjaronski[at]sidney.ars.usda.gov
EDUCATION
Image indenting B.S. 1969. B.S. 1969 Manhattan College, Riverdale NY
Image indenting M.S. 1972. M.S. 1972 Cornell University, Ithaca NY
Image indenting Ph. D. 1978. Ph. D. 1978 Cornell University, Ithaca NY

NEW! NPARL Research Entomologist Stefan Jaronski and Biological Science Technician Julie Grace hosted a Solid Substrate Fermentation Workshop for ARS scientists from related programs Feb. 16 - 18 at the Sidney ARS facility.  In addition to the workshop, Grace developed a short how-to manual illustrating the techniques discussed during the workshop.  Click here to download The Art of Fermentation.PDF (2.7MB)
CURRENT RESEARCH
My research at Sidney centers on development of a fungal biocontrol of the Sugar beet Root Maggot (SBRM) and study of grasshopper pathogens on U. S. rangeland. The SBRM research is directed towards developing a practical mycoinsecticide that can be transferred to industry for commercialization. This work is in cooperation with USDA Fargo ND, North Dakota State University, Fargo ND, and Montana State University, Bozeman MT, and is within the larger context of a biologically based management system for both sugar beet pests and pathogens, using microorganisms, cultural practices, resistant/tolerant beet hybrids, and induced systemic response. My grasshopper work concerns evaluating new technologies and new fungi for the microbial control of grasshoppers in cooperation with USDA APHIS. I am also studying the population genetics of Beauveria bassiana derived from grasshoppers, using molecular techniques.
RESEARCH EXPERIENCE
I joined NPARL in March 2000 as an insect pathologist after a 17-year career in industry. After a Ph.D. program and two postdoctoral appointments concerning microbial control of mosquitoes, I did an abrupt left turn and (a) left the academic community for industry, (b) changed from medical entomology to agricultural pests. From 1983 to 1992, I worked at Abbott Laboratories as an insect pathologist, during which time my research involved commercial development of Beauveria bassiana and Bacillus thuringiensis for use against a wide variety of insects. In 1992 I switched to Mycotech Corp., Butte MT, a small, venture-capital biotech group commercializing Beauveria-based mycoinsecticides. There, I spent 8 years involved in all aspects of commercial development of the fungus – from the early basic research through field trials to generation of registration data, from basic mycology to formulation chemistry, from science to marketing. My last position prior to joining ARS was Manager of Biopesticide Research and Development for Mycotech.
RELATED WEBPAGES

Link to Homing In on Hopper Hordes an article in Agricultural Research Magazine. Homing In on Hopper Hordes

Link to Grasshoppers. Grasshopper Research at NPARL

Link to Grasshoppers  Their Biology, Identification and Managment.  Comprehensive web site. Grasshoppers: Their Biology, Identification and Management (Comprehensive web site)

Link to Grasshopper Managemtn CD Request Form. Grasshopper Management CD Request Form

Download the .pdf Sugar Beet Maggots.  Written by Dr. Jaronski. Microbes for Sugar Beet Maggots  (.pdf)

Link to Sugar Beet Root Maggot. Sugar Beet Root Maggot

 

SELECTED PUBLICATIONS
  • Jaronski, S.T., M.A. Goettel, and C. Lomer. 2003. Regulatory Requirements for Ecotoxicological Assessments of Microbial Insecticides – How Relevant are They? In: Assessment of Environmental Safety of Biological Insecticides (H. Hokkanen, A. Hayek, eds.) Kluywer Academic Publishers, Dordrecht Netherlands. pp. 237-260.
  • Jaronski S. T.. 2003. Mycoinsecticides—Regulations and Risks. Symposium, Assessing impact of inundative biocontrol fungi. 4th National Integrated Pest Management Symposium, Indianapolis IN, April 8-10, 2003.
  • Dunkel, F.V., and S.T. Jaronski. 2003. Development of a bioassay system for the predator Xylocoris flavipes (Reuter) and its use in subchronic toxicity/pathogenicity studies of Beauveria bassiana (Bals.) Vuill. Strain GHA. Journal of Economic Entomology 96(4): 1045-1053.
  • Majumdar, A.; M.A. Boetel; S.T. Jaronski; R.J. Dregseth; and A.J. Schroder. 2003. Integration of the fungal entomopathogen and cereal cover crops for Sugar beet root maggot management – first year trial. Sugar beet Research and Extension Reports 33:163-169.
  • Meikle, W.G., S.T. Jaronski, G. Mercadier, and P.C. Quimby. 2003. A Distributed delay routine-based simulation model of Beauveria bassiana conidial stability in response to environmental stressors. Biocontrol 48: 561-578.
  • Johnson, D.J., J. E. Smits, S.T. Jaronski, and D.K. Weaver. 2002. Assessment of health and growth of ring-necked pheasants following consumption of infected insects or conidia of entomopathogenic fungi, Metarhizium anisopliae var. acridum and Beauveria bassiana, from Madagascar and North America. J. Toxicol. Environ. Health. 65(24): 2145-2162.
  • Inglis, G. D., S. T. Jaronski, & S. P Wraight. 2002. Use of spray oils with entomopathogens. In: Spray Oils Beyond 2000: Sustainable Pest and Disease Management. (G.. A. C. Beattie & D. M. Watson, Eds.). University of Western Sydney, Hawkesbury, Australia. pp. 302-312.
  • Brownbridge, M. S Costa, and S.T. Jaronski. 2001. Effects of in vitro passage of Beauveria bassiana on virulence to Bemisia argentifolii. J. Invertbr. Pathol. 77:280-283
  • Vandenberg, J. D., L. E. Sandvol, S. T. Jaronski, M. A. Jackson, E. J. Souza, and S. E. Halbert. 2001. Field efficacy of Beauveria bassiana and Paecilomyces fumosoroseus for the Russian wheat aphid in irrigated wheat . Southwestern Entomologist 26: 73-85.
  • James, R.R., and S.T. Jaronski. 2000. Effect of low viability on infectivity of Beauveria bassiana conidia toward the Silverleaf whitefly. Journal of Invertebrate Pathology. 76 (3): 227-228.
  • Wraight, S. P., R.I. Carruthers, S.T. Jaronski, C.A. Bradley, C.J. Garza, and S. Galaini-Wright. 2000. Evaluations of the entomopathogenic fungi Beauveria bassiana and Paecilomyces fumosoroseus for the microbial control of the silverleaf whitefly, Bemisia argentifolii. Biological Control. 17: 203-217.
  • Wraight, S.P., R.I. Carruthers, C.A. Bradley, S.T. Jaronski, L.A. Lacey, P. Wood, and S. Galaini-Wraight. 1998. Pathogenicity of the entomopathogenic fungi Paecilomyces spp. and Beauveria bassiana against the Silverleaf whitefly, Bemisia argentifolii. J. Invertebr. Pathol. 71:217-226.
  • Morisawa, T. A., B.C. Murphy, M.P. Parella, R.K. Nakasone, and S.T. Jaronski. 1998. Method for the rapid assessment of insect infection using the entomopathogenic fungus, Beauveria bassiana. Innovation in Biological Control Research, California Conference on Biological Control. Hoddle, M.S., ed., Pp. 216-219.
  • Jaronski, S.T., J. Lord, J. Rosinska, C. Bradley, K. Hoelmer, G. Simmons, R. Osterlind, C. Brown, and R. Staten. 1998. Effect of a Beauveria bassiana-based mycoinsecticide on beneficial insects under field conditions. The 1998 Brighton Conference – Pests & Diseases. 2: 651-657.
  • Bradley, C. A., J. C. Lord, S. T. Jaronski, S. A. Gill, A. J. Dreves, and B. C. Murphy. 1998. Mycoinsecticides in thrips management. The 1998 Brighton Conference – Pests & Diseases. 1: 177-182.
  • Goettel, M. S., and S. T. Jaronski.. 1997. Safety and Registration of Microbial Agents for Control of Grasshoppers and Locusts. Memoirs of the Entomological Society of Canada. 171:83-99.
  • Jaronski, S.T. 1997. New Paradigms in Formulating Mycoinsecticides. Pesticide Formula ions and Application Systems: 17th Volume, ASTM STP 1328. G.R. Goss, M.J. Hopkinson and H. M. Collins, eds. Philadelphia: American Society for Testing and Materials, 1997. pp. 99-114.
  • Jaronski, S. T. and M. S. Goettel. 1997. Development of Beauveria bassiana for Control of Grasshoppers and Locusts. Memoirs of the Entomological Society of Canada. 171: 225-237.
  • Nowierski, R. M. Z. Zheng, S. Jaronski, F. Delgado, and W. Swearingen. 1996. Analysis and Modeling of Time-Dose-Mortality of Melanoplus sanguinipes, Locusta migratoria migratoroides, and Schistocerca gregaria (Orthoptera: Acrididae) from Beauveria, Metarhizium, and Paecilomyces Isolates from Madagsacar. J. Invertebr. Pathol. 67:236-252.
  • Jaronski, S.T., and J. C. Lord. 1996. Evaluation of Beauveria bassiana (Mycotrol® WP) for Control of Whitefly in Spring Cantaloupes. Lanham MD: Entomological Society of America. Arthropod Management Tests, Vol. 21 p. 103.
  • Jaronski, S.T., J. C. Lord, and R. Paden. 1996. Beauveria bassiana (Mycotrol® WP) with Pyrethroids for Control of Whitefly in Spring Cantaloupes. Lanham MD: Entomological Society of America. Arthropod Management Tests, Vol. 21 p. 102-103.
  • Bartlett, M. C. and S. T. Jaronski. 1988. Mass Production of Entomogenous Fungi for Biological Control of Insects. In: Fungi in Biological Control Systems. (M. N. Burge, ed.) Manchester University Press, Manchester UK. pp 61-85.
  • Domnas, A., S. Jaronski, and W. K. Hanton. 1986. The zoospore and flagellar mastigonemes of Lagenidium giganteum (Oomycetes; Lagenidiales). Mycologia 78(5):810-817.
  • Jaronski, S. T., and R. C. Axtell. 1984. Nonsusceptibility of Chaoborus flavicans (Chaoboridae) to the mosquito pathogen Lagenidium giganteum (Oomycetes). J. Amer. Mosq. Control Assoc. (Mosquito News) 44(1):81-82.
  • Jaronski, S. T., and R. C. Axtell. 1984. Simplified production system for the fungus Lagenidium giganteum for operational mosquito control. J. Amer. Mosq. Control Assoc. (Mosquito News) 44(3):377-381.
  • Warner, S. A., G. W. Sovocoll, A. J. Domnas, and S. T. Jaronski. 1984. Composition of sterols in mosquito larvae is optimal for zoosporogenesis in Lagenidium giganteum. J. Invertebr. Pathol. 43:293-296.
  • Jaronski, S. T., and R. C. Axtell. 1983. Effects of temperature on infection, growth and zoosporogenesis of Lagenidium giganteum, a fungal pathogen of mosquito larvae. J. Amer. Mosq. Control Assoc. (Mosquito News) 43:42-45.
  • Jaronski, S. T., and R. C. Axtell. 1983. Persistence of the mosquito fungal pathogen Lagenidium giganteum (Oomycetes; Lagenidiales) after introduction into natural habitats. J. Amer. Mosq. Control Assoc. (Mosquito News) 43:332-337.
  • Gaugler, R., and S. T. Jaronski. 1983. Assessment of the mosquito pathogenic fungus Culicinomyces clavosporus as a blackfly pathogen. J. Med. Entomol. 20:575-576.
  • Jaronski, S. T., R. C. Axtell, S. M. Fagan, and A. J. Domnas. 1983. In vitro production of zoospores by Lagenidium giganteum (Oomycetes; Lagenidiales) on solid media. J. Invertebr. Pathol. 41:305-309.
  • Jaronski, S. T. 1983. Microsporida in cell culture. In: Advances in Cell Culture, Vol. 3. (Ed. K. Maramorosch) New York: Academic Press.
  • Jaronski, S. T. and R. C. Axtell. 1982. Effects of organic water pollution on the infectivity of the fungus Lagenidium giganteum (Oomycetes; Lagenidiales) for mosquito larvae (Culex quinquefasciatus): field and laboratory evaluation. J. Med. Entomol. 19(3):255-262.
  • Domnas, A. J., S. M. Fagan, and S. T. Jaronski. 1982. Factors influencing zoospore production in liquid cultures of Lagenidium giganteum (Oomycetes; Lagenidiales). Mycologia 74(5): 820-825.
  • Axtell, R. C., S. T. Jaronski, and T. L. Merriam. 1982. Efficacy of the mosquito fungal pathogen Lagenidium giganteum (Oomycetes; Lagenidiales). Proc. Calif. Vector & Mosq. Control Assoc. 50:41-42.

Selected Symposia and Invited Presentations:

  • Jaronski, S.T. 2003. Potential of Sugar beet root maggot biological control: Is there hope? Symposium on Sugar beet Root Maggot Management – Multidisciplinary and Innovative Approaches. 51st Annual Meeting of the Entomological Society of America, Cincinnati OH, Oct. 26-29, 2003.
  • Jaronski, S.T. 2003. Commercializing Mycoinsecticides: The U.S. Experience. In Symposium on Microbial Control – Research to Implementation. 51st Annual Meeting of the Entomological Society of America, Cincinnati OH, Oct. 26-29, 2003.
  • Jaronski, S.T. 2003. Commercializing Mycoinsecticides: The U.S. Experience. In Symposium on "Is bigger always better? A comparison of industrial-scale vs. cottage-scale production of microbial pesticides." 2003 Annual Meeting Society for Invertebrate Pathology, Burlington VT July 26-30, 2003.
  • Jaronski , S.T. 2000. Microbial control of insect pests of greenhouse crops in the United States. In: Symposium on Manipulating Microbes for Managing North American Pests: Hands Across the Border. Entomological Society of America, Entomological Society of Canada Joint Annual Meeting, Montreal Quebec, Dec. 3-6, 2000.
  • Inglis, G.D., Jaronski, S.T., and Wraight, S.P. 1999. Spray oils beyond 2000: use with entomopathogens. Spray Oils Beyond 2000: Sustainable Pest and Disease Management , Sydney, Australia. October 2, 1999.
  • Jaronski, S.T. and R. DeMaio. Commercial Mass Production of Mycoinsecticides – The Rest of the Story. Recent Advances in Fermentation Technology RAFTIII, Society for Industrial Microbiology, Sarasota FL, Nov. 13-16, 1999.
  • Jaronski, S. T. 1999. Commercial Development and Mass Production of Mycoinsecticides. Symposium on Mass Production and Delivery of Biologicals, Canadian Forum for Biological Control, Saskatoon Sask., Canada. Sept. 30, 1999.
  • Jaronski, S.T. 1999. Commercial Development of Microbials, Or How a Product Gets to Market. Symposium on Knowledge Management in Microbial Control Implementation, XXXII Annual Meeting, Society for Invertebrate Pathology, Univ. California, Irvine, Aug. 22-27, 1999.
  • Jaronski, S.T. 1998. Non-target Insect Effects of a Beauveria -based Mycoinsecticide: Lab vs. Field Experience. British Mycological Society Symposium: "The Future of Fungi in the Control of Pests, Weeds and Diseases." Southampton University, April 5-9, 1998.
  • Jaronski, S.T., Lord, J.C., B. Murphy and M.C. Parella. 1997. Control of Ornamental Pests using Entomopathogenic Fungi. Formal Conference on Arthropod Pests of Ornamentals. 1997 Annual Meeting of the Entomological Society of America, Nashville TN, Dec. 14-18, 1997.
  • Jaronski, S.T. 1997. Needs in Molecular Systematics of the Entomogenous Fungi: Industrial Perspectives. Symposium on Molecular Technology in Insect Pathology. [Invited Oral Presentation]. 30th Annual Meeting Society for Invertebrate Pathology, Banff, Canada, Aug. 24-29, 1997.
  • Jaronski, S.T. 1996. New Paradigms in Formulating Mycoinsecticides. Symposium on Microbiological Control Agents, 17th Annual Meeting of the American Society of Testing & Materials, New Orleans LA, October 1996.
  • Jaronski, S.T. 1991. Insect Pathogens: Status and Prospects in Biological Control. Symposium on the Biological Control of Insects and Weeds, Raleigh NC April 1991.
  • Jaronski, S.T. 1986. Commercial Development of Deuteromycete Fungi of Arthropods: A Critical Appraisal. 4th International Colloquium of Invertebrate Pathology, Wageningen Netherlands. August 1986.

Selected Proceedings and Abstracts:

  • Jaronski, S.T., J. Grace and S. Gaffri. 2003. Development of a biologically based pest and disease management system in sugar beets. 51st Annual Meeting of the Entomological Society of America, Cincinnati OH, Oct. 26-29, 2003.
  • Jaronski, S.T., J. Grace, and S. Gaffri. 2003 Development of a Biologically Based Pest and Disease Management System in Sugar Beets. 2003 Annual Meeting Society for Invertebrate Pathology, Burlington VT July 26-30, 2003. (Poster)
  • Wraight, S.P., M.E. Ramos, J.E. Williams, P.B. Avery, S.T. Jaronski, and J.D. Vandenberg. 2003. Comparative virulence and host specificity of Beauveria bassiana isolates assayed against lepidopteran pests of vegetable crops. 2003 Annual Meeting Society for Invertebrate Pathology, Burlington VT July 26-30, 2003.
  • Jaronski, S.T., R. Dregseth, M. Boetel, B. Jacobsen, B. Larson. 2003. Post-planting Applications of Insect Pathogenic Fungi for the Control of Sugar beet Root Maggot Within a Bio-Based System for Management of Sugar beet Pests and Diseases. 33rd Annual Sugar beet Reporting Session. Sugar beet Research and Education of Minnesota and North Dakota, Fargo ND, Jan 8, 2003.
  • Jaronski, S.T., B. Jacobsen, N. Zidack, and B. Larson. Development of a Biologically-based Pest and Disease Management System in Sugar Beets. 4th National Integrated Pest Management Symposium, Indianapolis IN, April 8-10, 2003. (Poster)
  • Majumdar, A., M. A. Boetel, S. T. Jaronski, R. J. Dregseth, and A. J. Schroeder. 2003. Integration of a fungal entomopathogen and cereal cover crops for Sugar beet root maggot management. 33rd Annual Sugar beet Reporting Session. Sugar beet Research and Education of Minnesota and North Dakota, Fargo ND, Jan 8, 2003. [Oral Presentation]
  • Dregseth, R. J., Nyle B. Jonason, Mark A. Boetel, Larry G. Campbell, Allen J. Schroeder, and Stefan T. Jaronski. 2003. Mycoinsecticide methodology for Sugar beet root maggot management. 33rd Annual Sugar beet Reporting Session. Sugar beet Research and Education of Minnesota and North Dakota, Fargo ND, Jan 8, 2003. [Oral Presentation]
  • Jonason, N.B., M. A. Boetel, L. G. Campbell, L.J. Smith and S.T. Jaronski. 2002. Development of bioinsecticide methodology for sugar beet root maggot (Diptera: Otitidae) management. Entomological Society of America, North Central Branch Meetings, Lansing MI March 24-27, 2002.
  • Jaronski, S.T. 2002. Pathogen prevalence among Grasshoppers populations as affected by rotational grazing – an interim report. Grasshopper Management Board Meeting, Denver CO 1/30-31/02.
  • Jaronski, S.T. 2001. "Orthopteran Thermoregulation and Behavioral Fever in Central Alaska – A Chilling Prospect for Entomopathogens such as Beauveria bassiana?" Proc. 34th Ann. Meeting Society for Invertebrate Pathology, Aug 25-30, 2001, Netherlands.
  • Jaronski, S.T., Thomas, R., and Lutz, R. 2000. Screening Deuteromycete fungi for the control of larval fleas. 33rd Annual Meeting of the Society for Invertebrate Pathology, University of Guanajuato, Mexico, Aug.13-18, 2000.
  • Jaronski, S.T. and Liebman, J. 2000. Direct spore counts vs. colony forming unit counts as methods for quantifying viable Beauveria bassiana conidia. 33rd Annual Meeting of the Society for Invertebrate Pathology, University of Guanajuato, Mexico, Aug.13-18, 2000.
  • Brownbridge, M., Costa, S. and Jaronski, S.T. 2000. Effect of in vitro passage of Beauveria bassiana on virulence to Silverleaf whitefly. 33rd Annual Meeting of the Society for Invertebrate Pathology, University of Guanajuato, Mexico, Aug.13-18, 2000.
  • Vandenberg, J.A., Sandoval, L., Jaronski, S., Jackson, M. Field efficacy of fungi against the Russian Wheat Aphid. 1999. Entomological Society of America, Annual Meeting, Atlanta GA, Dec. 12-16, 1999.
  • Broughton, M., Dunkel, F., Jaronski, S., Boydston, and Fox, K. 1999. Evaluation of cinnamaldehyde as a fumigant against stored product insects. Entomological Society of America, Annual Meeting, Atlanta GA, Dec. 12-16, 1999.
  • Jaronski, S. T., J. C. Lord, G. Simmons, and K. Hoelmer. 1997. Field Evaluation of the effects of Beauveria bassiana Strain GHA on the hymenopterous whitefly parasite, Eretmocerus sp. in commercial melons. 30th Annual Meeting Society for Invertebrate Pathology, Banff, Canada, Aug. 24-29, 1997.
  • Jaronski, S. T., J. C. Lord, and J. Rosinska. 1997. Persistence of Beauveria bassiana conidia on lower and upper leaf surfaces of cantaloupe (Cucumis melo L.) and cotton (Gossypium hirsutum L.). 30th Annual Meeting Society for Invertebrate Pathology, Banff, Canada, Aug. 24-29, 1997.
  • Jaronski, S. T., J. Rosinska, C. Brown, R. Osterlind, R. Staten, R. Craft, L. Antilla. 1997. Impact of Beauveria bassiana (Mycotech Strain GHA) on predators of Bemisia argentifolii (Silverleaf Whitefly) in Arizona Cotton. 30th Annual Meeting Society for Invertebrate Pathology, Banff, Canada, Aug. 24-29, 1997.
  • Loeser, M. R., S.T. Jaronski, J. J. Bromenshenk, and C.B. Henderson. 1997. Effect of Beauveria bassiana (Mycotech Strain GHA) on Apis mellifera L. Colonies. 30th Annual Meeting Society for Invertebrate Pathology, Banff, Canada, Aug. 24-29, 1997.
  • Lord, J. C. , C. Near, J. Britton, and S. T. Jaronski. 1997. Compatability of the Beauveria bassiana based mycoinsecticide (Mycotrol) with fungicides, conventional insecticides and spray adjuvants. 30th Annual Meeting Society for Invertebrate Pathology, Banff, Canada, Aug. 24-29, 1997. [Poster].
 
 
Julie Grace
CONTACT INFORMATION

Biological Science Technician
Phone: 406.433.9430
Fax: 406.433.5038
E-mail: jgrace[at]sidney.ars.usda.gov

NEW! NPARL Research Entomologist Stefan Jaronski and Biological Science Technician Julie Grace hosted a Solid Substrate Fermentation Workshop for ARS scientists from related programs Feb. 16 - 18 at the Sidney ARS facility.  In addition to the workshop, Grace developed a short how-to manual illustrating the techniques discussed during the workshop.  Click here to download The Art of Fermentation.PDF (2.7MB)

CONTACT INFORMATION

Biological Science Technician
Phone: 406.433.2020
Fax: 406.433.5038
E-mail: rschlothauer[at]sidney.ars.usda.gov

 
 

USDA-ARS-NPARL  P.O. Box 463  Sidney, MT 59270  PH: 406.433.2020  FAX: 406.433.5038

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