Steve Van Timmeren
I received my B.S. in Biology from Calvin College in Grand Rapids, MI in 1997 and my M.S. in Biological Sciences from Eastern Illinois University in Charleston, IL in 2000. My Master's research was on the emergence and reproductive behaviors of the Japanese beetle. I studied when male and female beetles emerged from the soil and how emergence related to specific mating and egg laying behaviors.
As a research technician in the Berry Crops Entomology laboratory, I am involved in various projects with a primary focus on two important pests, the spotted wing Drosophila and blueberry stem gall wasp.
In our spare time, my wife and I enjoy doing just about anything outside. This includes everything from cross-country skiing in winter to running all year round. We also try to keep up with our two daughters who always keep us busy!
Van Timmeren, S., Sial, A.A., Lanka, S.K., Spaulding, N.R., and Isaacs, R. (2019) Development of a rapid assessment method for detecting insecticide resistance in spotted wing Drosophila (Drosophila suzukii Matsumura). Pest Management Science, doi: 10.1002/ps.5341
Van Timmeren, S., Mota-Sanchez, D., Wise, J. C. and Isaacs, R. (2018) Baseline susceptibility of spotted wing Drosophila (Drosophila suzukii) to four key insecticide classes. Pest Management Science, 74: 78-87.
Van Timmeren S., Diepenbrock L.M., Bertone M.A., Burrack H.J., Isaacs R. (2017) A filter method for improved monitoring of Drosophila suzukii (Diptera: Drosophilidae) larvae in fruit. Journal of Integrated Pest Management doi: 10.1093/jipm/pmx019
Van Timmeren, S., Horejski, L., Larson S., Spink K., Fanning, P., and Isaacs, R. (2017) Diurnal activity of Drosophila suzukii (Diptera: Drosophilidae) in highbush blueberry and behavioral response to irrigation and application of insecticides. Environmental Entomology doi: 10.1093/ee/nvx131
Pelton, E., C. Gratton, R. Isaacs, S. Van Timmeren, A. Blanton, and C. Guedot. (2016) Earlier activity of Drosophila suzukii in high woodland landscapes but relative abundance is unaffected. Journal of Pest Science, DOI: 10.1007/s10340-016-0733-z.
Burrack, H.J, Asplen, M., Bahder, L., Collins, J., Drummond, F.A., Guedot, C., Isaacs, R., Johnson, D., Blanton, A., Lee, J.C., Loeb, G., Rodriguez-Saona, C., Van Timmeren, S., Walsh. D, and McPhie, D.R. (2015) Multistate comparison of attractants for monitoring Drosophila suzukii (Diptera: Drosophilidae) in blueberries and caneberries. Environmental Entomology, 1-9. DOI: 10.1093/ee/nvv022
Lee, J.C., Dreves, A.J., Cave, A.M., Kawai, S., Isaacs, R., Miller, J.C., Van Timmeren, S., and Bruck, D.J. (2015) Infestation of wild and ornamental noncrop fruits by Drosophila suzukii (Diptera: Drosophilidae). Annals of the Entomological Society of America, 1-13. DOI: 10.1093/aesa/sau014
Van Timmeren, S., and Isaacs, R. (2013). Control of spotted wing drosophila, Drosophila suzukii, by specific insecticides and by conventional and organic crop protection programs. Crop Protection, 54: 126-133.
Shearer, P.W., Beers, E.H., Brown, P., Burrack, H.J., Isaacs, R., Lee, J., Miller, B., Novotny, L., Van Timmeren, S., Van Steenwyk, R., Walton, V., and Wise, C. (2013) Drosophila suzukii in the USA; monitoring and management in berries and cherries. Integrated protection of fruit crops, IOBC-WPRS Bulletin 91, 315-316.
Teixera, L., Mason, K.S., Van Timmeren, S., and Isaacs, R. (2011) Seasonal pattern of oviposition by the North American grape berry moth (Lepidoptera: Tortricidae). Journal of Applied Entomology. 135: 693-699.
Van Timmeren, S., Wise, J.C., VanderVoort, C., and Isaacs, R. (2011) Comparison of foliar and soil formulations of neonicotinoid insecticides for control of potato leafhopper, Empoasca fabae (Homoptera: Cicadellidae), in wine grapes. Pest Management Science. 67: 560-567.
Isaacs, R. and Van Timmeren, S. (2009) Monitoring and temperature-based prediction of the whitemarked tussock moth (Lepidoptera: Lymantriidae) in blueberry. Journal of Economic Entomology 102(2),637-645.
Van Timmeren, S., Switzer, P., and Kruse, K. (2000) Emergence and reproductive patterns in the Japanese beetle, Popillia japonica (Coleptera: Scarabaeidae). Journal of the Kansas Entomological Society 74(1), 17-27.
Technical reports of insecticide and acaracide trials are available through the website Arthropod Management Tests. Reports from each year can be searched by crop, pest, author, etc.