Chen, J., A. Kitazumi, J. Alpuerto, A. Alyokhin, and B. de los Reyes. 2016. Heat-induced mortality and expression of heat shock proteins in Colorado potato beetles treated with imidacloprid. Insect Science 23: 548-554.

Abundance Factors, Insecticides /

The Colorado potato beetle is an important pest of solanaceous plants in the Northern Hemisphere. Better understanding of its physiological responses to temperature stress and their interactions with still-prevalent chemical control has important implications for the management of this insect. We measured mortality and expression of the Hsp70 heat shock proteins in the Colorado potato […]

Chen, J., A. Kitazumi, J. Alpuerto, A. Alyokhin, and B. de los Reyes. 2016. Heat-induced mortality and expression of heat shock proteins in Colorado potato beetles treated with imidacloprid. Insect Science 23: 548-554. Read More »

Alyokhin, A. and L. Miller. 2015. Propensity for flying and walking by the Colorado potato beetles treated with imidacloprid. American Journal of Potato Research 92: 138-142.

Insecticides, Microevolution /

The Colorado potato beetle, Leptinotarsa decemlineata (Say) is a very serious pest of potatoes which is highly mobile and capable of rapid evolution of resistance to chemical control. Insect movement, resulting in gene flow between resistant and susceptible populations, is considered to be an important factor affecting the development and spread of insecticide resistance. We investigated the

Alyokhin, A. and L. Miller. 2015. Propensity for flying and walking by the Colorado potato beetles treated with imidacloprid. American Journal of Potato Research 92: 138-142. Read More »

Alyokhin, A., D. Mota-Sanchez, M. Baker, W. E. Snyder, S. Menasha, M. Whalon, G. Dively, and W. F. Moarsi. 2015. Red Queen on a potato field: IPM vs. chemical dependency in Colorado potato beetle control. Pest Management Science 71: 343-356.

Insecticides, Microevolution /

Originally designed to reconcile insecticide applications with biological control, the concept of integrated pest management (IPM) developed into the systems-based judicious and coordinated use of multiple control techniques aimed at reducing pest damage to economically tolerable levels. Chemical control, with scheduled treatments, was the starting point for most management systems in the 1950s. Although chemical

Alyokhin, A., D. Mota-Sanchez, M. Baker, W. E. Snyder, S. Menasha, M. Whalon, G. Dively, and W. F. Moarsi. 2015. Red Queen on a potato field: IPM vs. chemical dependency in Colorado potato beetle control. Pest Management Science 71: 343-356. Read More »

Patterson, M. and A. Alyokhin. 2014. Survival and development of Colorado potato beetles on potatoes treated with phosphite. Crop Protection 61: 38-42.

Insecticides /

Phosphite is a general term used to describe the salts of phosphorous acid H3PO3. It is effective in suppressing a number of plant diseases caused by oomycetes and has been shown to reduce populations of several insect species. We investigated the effects of phosphite on the Colorado potato beetles in the field and laboratory. Beetle

Patterson, M. and A. Alyokhin. 2014. Survival and development of Colorado potato beetles on potatoes treated with phosphite. Crop Protection 61: 38-42. Read More »

Chen, J., A. Alyokhin, D. Mota-Sanchez, M. Baker and M. Whalon. 2014. Variation in fitness among geographically isolated Colorado potato beetle (Coleoptera: Chrysomelidae) populations. Annals of the Entomological Society of America 107: 128-135.

Abundance Factors, Microevolution /

Colorado potato beetle, Leptinotarsa decemlineata (Say) is a major pest of potatoes in North America, Europe, and parts of Asia. It adapts quickly to adverse environments, thereby limiting the longevity of control strategies. Better understanding of variability among geographically isolated populations of this insect might create an opportunity to customize control techniques for local conditions. We investigated

Chen, J., A. Alyokhin, D. Mota-Sanchez, M. Baker and M. Whalon. 2014. Variation in fitness among geographically isolated Colorado potato beetle (Coleoptera: Chrysomelidae) populations. Annals of the Entomological Society of America 107: 128-135. Read More »

Baker, M., K. Hossain, K. Zabierek, K. Collie, A. Alyokhin, D. Mota-Sanchez, and M. Whalon. 2014. Geographic variation in cannibalism in Colorado potato beetle populations. Environmental Entomology 43: 102-109.

Abundance Factors /

Cannibalism can have a large effect on population growth and survival in stressful environments, possibly including those created by insecticide use. In this study, we collected Colorado potato beetles from three isolated areas in the northeastern United States known for high levels of resistance to neonicotinoids. We measured resistance to imidacloprid in each of those

Baker, M., K. Hossain, K. Zabierek, K. Collie, A. Alyokhin, D. Mota-Sanchez, and M. Whalon. 2014. Geographic variation in cannibalism in Colorado potato beetle populations. Environmental Entomology 43: 102-109. Read More »

Bernard, E., R. P. Larkin, S. Tavantzis, M. S. Erich, A. Alyokhin, and S. D. Gross. 2014. Rapeseed rotation, compost and biocontrol amendments reduce soilborne diseases and increase tuber yield in organic and conventional potato production systems. Plant Soil 374: 611-627.

Abundance Factors /

Aims Integrating multiple soil and disease management practices may improve crop productivity and disease control, but potential interactions and limitations need to be determined.Methods Three different potential disease-suppressive management practices, including a Brassica napus (rapeseed) green manure rotation crop, conifer-based compost amendment, and three biological control organisms (Trichoderma virens, Bacillus subtilis, and Rhizoctonia solani hypovirulent isolate Rhs1A1) were evaluated alone

Bernard, E., R. P. Larkin, S. Tavantzis, M. S. Erich, A. Alyokhin, and S. D. Gross. 2014. Rapeseed rotation, compost and biocontrol amendments reduce soilborne diseases and increase tuber yield in organic and conventional potato production systems. Plant Soil 374: 611-627. Read More »

Lamb, R. J., P. A. MacKay, and A. Alyokhin. 2013. Seasonal dynamics of three coexisting aphid species: implications for estimating population variability. Canadian Entomologist 145: 283-291.

Abundance Factors /

Seasonal patterns of abundance and population variability were determined for Macrosiphum euphorbiae (Thomas), Myzus persicae (Sulzer), and Aphis nasturtii (Kaltenbach) (Hemiptera: Aphididae) in potato plots from weekly samples for 28 years. All species showed a single annual peak, but arrived and reached peak abundance at different times. Population variability (PV, a proportion between 0 and 1) for the week of peak

Lamb, R. J., P. A. MacKay, and A. Alyokhin. 2013. Seasonal dynamics of three coexisting aphid species: implications for estimating population variability. Canadian Entomologist 145: 283-291. Read More »

Leppanen, C., A. Alyokhin, and S. Gross. 2012. Competition for aphid prey between different lady beetle species in a laboratory arena. Psyche: A Journal of Entomology 2012: Article ID 890327, 9 pp.

Abundance Factors / ,

Direct competition for aphid prey (Hemiptera: Aphididae) was evaluated between and among several lady beetle species (Coleoptera: Coccinellidae). The behavior of three native (Coccinella trifasciata, Coleomegilla maculata, and Hippodamia convergens) and four nonnative (Coccinella septempunctata, Harmonia axyridis, Hippodamia variegata, and Propylea quatuordecimpunctata) lady beetles was observed in laboratory arenas. The beetles were kept alone, paired with conspecifics or paired

Leppanen, C., A. Alyokhin, and S. Gross. 2012. Competition for aphid prey between different lady beetle species in a laboratory arena. Psyche: A Journal of Entomology 2012: Article ID 890327, 9 pp. Read More »

Bernard, E., R. P. Larkin, S. Tavantzis, M. S. Erich, A. Alyokhin, G. Sewell, A. Lannan, and S. D. Gross. 2012. Compost, rapeseed rotation, and biocontrol agents significantly impact soil microbial communities in organic and conventional potato production systems. Applied Soil Ecology 52: 29-41.

Abundance Factors /

Cultural practices such as organic amendments, rotations, and use of biological control organisms are regularly investigated for their effects on controlling plant diseases but their effects on soil microbial populations are often unexplored. In this study, three different sustainable disease management practices, use of compost amendment, biocontrol organisms, and a potentially disease-suppressive rotation, were established

Bernard, E., R. P. Larkin, S. Tavantzis, M. S. Erich, A. Alyokhin, G. Sewell, A. Lannan, and S. D. Gross. 2012. Compost, rapeseed rotation, and biocontrol agents significantly impact soil microbial communities in organic and conventional potato production systems. Applied Soil Ecology 52: 29-41. Read More »