Developing plant germplasm that contains genetic resistance to insect pests is a valuable component of integrated pest management programs. In the last several decades, numerous attempts have been made identify sources Colorado potato beetle Leptinotarsa decemlineata Say (Coleoptera: Chrysomelidae). This review focuses on compiling information regarding general L. biology, ecology, and focusing...

Determining when multiple predator species provide better pest suppression than single species is a key step towards developing ecologically-informed biological control strategies. Theory and experiments predict that resource partitioning among functionally different predator species can strengthen prey suppression, because as a group they can access more prey types than functionally redundant ...

A North Dakota strain of the Colorado potato beetle, Leptinotarsa decemlineata (Say), was reared under both short- (8L:16D) and long-day (17L:7D) conditions. Age-related and pyriproxyfen- (JHA-) induced changes in hemolymph free amino acids and proteins were examined. Under a short-day photoperiod, the total free amino acid concentration in the hemolymph increased gradually up to 20 days of adu...

BACKGROUND Select populations of Colorado potato beetle, Leptinotarsa decemlineata, in Wisconsin have recently become resistant to soil-applied neonicotinoids in potato. Sublethal insecticide concentrations persisting in foliage through the growing season may select for resistance over successive years of use. Over the 2 years of this study, the aim was to document the in-plant insecticide conc...

A novel synthesis of the aggregation pheromone of the Colorado potato beetle, Leptinotarsa decemlineata, has been developed based on a Sharpless asymmetric epoxidation in combination with a chemoselective alcohol oxidation using catalytic [(neocuproine)PdOAc]2OTf2. Employing this approach, the pheromone was synthesized in 3 steps, 80% yield and 86% ee from geraniol.

Colorado potato beetle, Leptinotarsa decemlineata (Say), feeding, development, and survival to adulthood were examined after continuously exposing large larvae to Bacillus thuringiensis subsp. tenebrionis-treated potato foliage from the field. In laboratory assays, the overall consumption and the length of period to become prepupae were determined for larvae, which began as 3rd and 4th instars,...

The Colorado potato beetle Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae) in the northern part of the Xinjiang Uygur Autonomous Region has evolved resistance to several pyrethroid and carbamate insecticides. Biological control methods should be a major component of integrated pest management for L. decemlineata. Spinosad and abamectin are two biopesticides that have unique mechanis...

Despite the ubiquity of parental effects and their potential effect on evolutionary dynamics, contribution to evolution predator-prey interactions remains poorly understood. Using quantitative genetics, here we demonstrate that substantially contribute larval antipredator responses in a leaf beetle (Leptinotarsa decemlineata). Previous research showed larger L. decemlineata larvae elicit strong...