Alpuerto, J. B., A. Mukherjee, A. Kitazumi, A. Alyokhin, D. De Koeyer, and B. G. de los Reyes. 2017. Impaired expression of the beta and delta isoforms of vacuolar processing enzymes compromise the basal defenses of Arabidopsis thaliana against the phloem-feeding insect Myzus persicae. Acta Physiologiae Plantarum 39: 233. https://doi.org/10.1007/s11738-017-2529-z

Abundance Factors /

While the functions of vacuolar processing enzymes (VPE) in plant responses to pathogens are now better established, their possible roles against insect herbivores need validation. Inspired by an observation that betaVPE and deltaVPE represent the most highly upregulated transcripts in leaves of Solanum bulbocastanum and its backcross progenies that were highly resistant to the phloem-feeding […]

Alpuerto, J. B., A. Mukherjee, A. Kitazumi, A. Alyokhin, D. De Koeyer, and B. G. de los Reyes. 2017. Impaired expression of the beta and delta isoforms of vacuolar processing enzymes compromise the basal defenses of Arabidopsis thaliana against the phloem-feeding insect Myzus persicae. Acta Physiologiae Plantarum 39: 233. https://doi.org/10.1007/s11738-017-2529-z Read More »

Lamb, R.J., P.A. MacKay, and A. Alyokhin. 2017. Estimating population variability of aphids (Hemiptera: Aphididae): how many years are required? Canadian Entomologist 149: 48-55.

Abundance Factors /

Variability is an important characteristic of population dynamics, but the length of the time series required to estimate population variability is poorly understood. To this end, population variability of Macrosiphum euphorbiae (Thomas), Myzus persicae (Sulzer), and Aphis nasturtii (Kaltenbach) (Hemiptera: Aphididae) was investigated. Population variability (measured as PV, a proportion between 0 and 1) was estimated for time series of 3-62

Lamb, R.J., P.A. MacKay, and A. Alyokhin. 2017. Estimating population variability of aphids (Hemiptera: Aphididae): how many years are required? Canadian Entomologist 149: 48-55. Read More »

Booth, E., A. Alyokhin, and S. Pinatti. 2017. Adult cannibalism in an oligophagous herbivore, the Colorado potato beetle. Insect Science 24: 295-302.

Abundance Factors /

Cannibalism, or intraspecific predation, can play a major role in changing individual fitness and population processes. In insects, cannibalism frequently occurs across life stages, with cannibals consuming a smaller or more vulnerable stage. Predation of adult insects on one another is considered to be uncommon. We investigated adult cannibalism in the Colorado potato beetle, Leptinotarsa

Booth, E., A. Alyokhin, and S. Pinatti. 2017. Adult cannibalism in an oligophagous herbivore, the Colorado potato beetle. Insect Science 24: 295-302. Read More »

Booth, E. and A. Alyokhin. 2016. Colorado potato beetle response to potato plants infected with Potato Virus Y and Potato Leafroll Virus. American Journal of Potato Research 93: 213-223.

Viruses /

Agricultural systems are often simultaneously impacted by multiple stressors. In our study, we investigated the effects of two commonly occurring viruses of potato, Potato virus Y (PVY) and Potato leafroll virus (PLRV) on host plant selection and utilization across various spatial scales by the Colorado potato beetle. Adult beetles selected PLRV-infected foliage in the cage

Booth, E. and A. Alyokhin. 2016. Colorado potato beetle response to potato plants infected with Potato Virus Y and Potato Leafroll Virus. American Journal of Potato Research 93: 213-223. Read More »

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 »