Insecticides

Alyokhin, A., G. Sewell, and E. Groden. 2002. Aphid abundance and potato virus Y transmission in imidacloprid-treated potatoes. American Journal of Potato Research 79: 255-262.

Abundance Factors, Insecticides, Viruses /

Imidacloprid is a commonly used insecticide that is highly effective in controlling insect pests of potato. The relatively high cost of imidacloprid provides commercial growers with a strong incentive to reduce field application rates. In the present study, we investigated the impact of reduced imidacloprid rates on aphid abundance and potato virus Y transmission within […]

Alyokhin, A., G. Sewell, and E. Groden. 2002. Aphid abundance and potato virus Y transmission in imidacloprid-treated potatoes. American Journal of Potato Research 79: 255-262. Read More »

Alyokhin, A. V., R. H. Messing, and J. J. Duan. 2001. Abundance and mating behavior of Oriental fruit flies (Diptera: Tephritidae) in the vicinity of methyleugenol-baited traps. Pan-Pacific Entomologist 77: 161-167.

Abundance Factors, Insecticides /

Methyleugenol-baited traps are used for Oriental fruit fly control through male annihilation, as well as for detection and monitoring of fly populations. However, if the males which come to these traps emit sex pheromones, attract females from the surrounding vegetation, and mate with them before being killed, then using such traps might in fact increase

Alyokhin, A. V., R. H. Messing, and J. J. Duan. 2001. Abundance and mating behavior of Oriental fruit flies (Diptera: Tephritidae) in the vicinity of methyleugenol-baited traps. Pan-Pacific Entomologist 77: 161-167. Read More »

Alyokhin, A. V., D. N. Ferro, C. W. Hoy, and G. Head. 1999. Laboratory assessment of flight activity displayed by the Colorado potato beetles (Coleoptera: Chrysomelidae) fed on transgenic and Cry3A toxin-treated potato foliage. Journal of Economic Entomology92: 115-120.

Insecticides, Microevolution /

Adults of full-sib Colorado potato beetle families were separated into three groups fed on different diets: transgenic potato foliage, potato foliage treated with a foliar formulation of B. thuringiensis endotoxin (12.37 ?g of Cry3A d-endotoxin per 1?l of mixture), and untreated potato foliage. After feeding for 3 hours, all the beetles were placed on a computer-linked flight mill system.

Alyokhin, A. V., D. N. Ferro, C. W. Hoy, and G. Head. 1999. Laboratory assessment of flight activity displayed by the Colorado potato beetles (Coleoptera: Chrysomelidae) fed on transgenic and Cry3A toxin-treated potato foliage. Journal of Economic Entomology92: 115-120. Read More »

Alyokhin, A. V. and D. N. Ferro. 1999. Modifications in flight and oviposition of Bt-resistant and Bt-susceptible Colorado potato beetles as a result of exposure to Bacillus thuringiensis subsp. tenebrionis Cry3A toxin. Entomologia Experimentalis et Applicata90: 93-101.

Abundance Factors, Insecticides /

Laboratory strains of Colorado potato beetle, Leptinotarsa decemlineata (Say), physiologically resistant and susceptible to Bacillus thuringiensis (Berliner) subsp. tenebrionis Cry3A toxin were reared to adults on caged potato plants. Influence of three different diets (transgenic potatoes, regular potatoes, and regular potatoes followed by the transgenic potatoes) on beetle mortality, fecundity, and flight behavior were tested under laboratory conditions. A computer-linked flight

Alyokhin, A. V. and D. N. Ferro. 1999. Modifications in flight and oviposition of Bt-resistant and Bt-susceptible Colorado potato beetles as a result of exposure to Bacillus thuringiensis subsp. tenebrionis Cry3A toxin. Entomologia Experimentalis et Applicata90: 93-101. Read More »

Alyokhin, A. V. and D. N. Ferro. 1999. Reproduction and dispersal of summer-generation Colorado potato beetle (Coleoptera: Chrysomelidae). Environmental Entomology 28: 425-430.

Abundance Factors, Insecticides /

Colorado potato beetle dispersal and reproduction was investigated under field and laboratory conditions. Movement and mating of newly emerged summer-generation Colorado potato beetle adults was monitored in the field using a mark-recapture technique, and beetle mating within experimental plots was recorded. The number of degree-days (DD) required for the beetles to become reproductive was tested

Alyokhin, A. V. and D. N. Ferro. 1999. Reproduction and dispersal of summer-generation Colorado potato beetle (Coleoptera: Chrysomelidae). Environmental Entomology 28: 425-430. Read More »

Alyokhin, A. V. and D. N. Ferro. 1999. Relative fitness of Colorado potato beetle (Coleoptera: Chrysomelidae) resistant and susceptible to the Bacillus thuringiensis Cry3A toxin. Journal of Economic Entomology 92: 510-515.

Abundance Factors, Insecticides /

Laboratory experiments were conducted to compare relative fitness of strains of Colorado potato beetle resistant and susceptible to Bacillus thuringiensis subsp. tenebrionis Cry3A toxin. Net replacement rates and intrinsic rates of population increase were calculated for resistant and susceptible populations. During the experiment, susceptible males on average copulated 13.3 ± 1.5 times, while resistant males copulated only 8.0 ± 1.0 times. Susceptible females

Alyokhin, A. V. and D. N. Ferro. 1999. Relative fitness of Colorado potato beetle (Coleoptera: Chrysomelidae) resistant and susceptible to the Bacillus thuringiensis Cry3A toxin. Journal of Economic Entomology 92: 510-515. Read More »

Alyokhin, A. V. and D. N. Ferro. 1999. Mating ability of Colorado potato beetle (Coleoptera: Chrysomelidae) males fed transgenic potato foliage. Canadian Entomologist 131: 539-540.

Abundance Factors, Insecticides

Thirty-three teneral Colorado potato beetle males were provided with non-transgenic foliage for 8 d, another 33 males were provided with non-transgenic foliage for 4 days, and then switched to transgenic foliage for another 4 d, and the remaining 33 males were provided with transgenic foliage for 8 days and then mated to females continuously fed

Alyokhin, A. V. and D. N. Ferro. 1999. Mating ability of Colorado potato beetle (Coleoptera: Chrysomelidae) males fed transgenic potato foliage. Canadian Entomologist 131: 539-540. Read More »