beta-Leptinotarsin-h, purified from the hemolymph of the beetle Leptinotarsa haldemani, is a potent ( approximately 1 nM) neuroactive protein that rapidly (few seconds) stimulates Ca(2+) influx and neurotransmitter release. Our goals were to further characterize beta-leptinotarsin-h and to test the hypothesis that it stimulates Ca(2+) influx through presynaptic Ca(2+) channels. Analysis of part...

Objective. To evaluate the functional activity of entomopathogenic strains Bacillus thuringiensis 87 and 800 during bioassay on target object — Colorado beetle population depending characteristics bacterial cultivation. Methods. Microscopic, microbiological (to cultivate bacteria different media determine spore titre), (on larvae natural Leptinotarsa decemlineata Say period dominance younger ag...

the chrysomelid species leptinotarsa decemlineata (say), commonly known as colorado potato beetle (cpb), is an important pest of potato and other solanaceous crops. the effects of precocene i and ii, juvenile hormone inhibitors, on morphological characteristics of the chemoreceptor organs of antennae and mouthparts of l. decemlineata larvae were studied in the laboratory. different doses of pre...

One of the pest organisms reducing potato production is Colorado Potato Beetle [Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomalidae)] (CPB). CPB a polyphagous that damages every-stage potato. Although entomopathogenic nematodes (EPNs) in world have been demonstrated by many laboratories and field/garden studies activity against harmful groups, very few conducted on our country (Türkiye)....

In the field, plants are challenged by more than one biotic stressor at the same time. In this study, the molecular interactions between potato (Solanum tuberosum L.), Colorado potato beetle (Leptinotarsa decemlineata Say; CPB) and Potato virus Y(NTN) (PVY(NTN) ) were investigated through analyses of gene expression in the potato leaves and the gut of the CPB larvae, and of the release of potat...

Emergence phenology and fitness attributes of several Colorado potato beetle, Leptinotarsa decemlineata (Say), populations were measured under field and greenhouse conditions. Anecdotal observations by producers and pest managers in many locations of the upper Midwest increasingly suggested that select populations of Colorado potato beetle were emerging over a longer period in the spring and we...