Losses of bees have been reported in Italy concurrent with the sowing of maize coated with neonicotinoids where pneumatic drilling machine were used. Solid particles with systemic insecticide, falling on the vegetation surrounding the sown area, were thought to poison bees foraging on contaminated nectar and pollen. However, bees fed with guttation drops and dew collected from the surrounding v...

The nicotinic acetylcholine receptor (nAChR) is a ligand-gated ion channel composed of 5 protein subunits arranged around a central cation selective pore. Several classes of natural and synthetic insecticides mediate their effect through interacting at nAChRs. This review examines the basic pharmacology of the neonicotinoids and related chemistry, with an emphasis on sapfeeding insects from the...

Globally, most crops are entomophilous (Klein et al., 2007), and thus yield is dependent on or at least benefits from pollination services. Wild bees are, together with honey bees, important providers of these crop pollination services (Garibaldi et al., 2013). Recent findings suggest, that bee pollination not only improves yield, but also the quality of agricultural products—including several ...

Diaphorina citri vectors pathogens that cause 'huanglongbing' or citrus greening disease which poses a serious threat to citrus production worldwide. Vector suppression is critical to reduce disease spread. Efficacy is a main concern when choosing an insecticide. Insecticidal treatments of 49 products or 44 active ingredients (a.i) labeled or experimental were field tested between 2005-2013 as ...

Field-collected nymphs and adults of Bagrada hilaris (Burmeister) (Hemiptera: Penatatomidae) from three locations were evaluated for susceptibility to insecticides representing 10 classes of insecticide chemistry. Although relative susceptibilities differed between leaf-spray and leaf-dip Petri dish bioassays, consistently low LC50 values were determined for chlorpyrifos, bifenthrin, and lambda...

The discovery of neonicotinoids as important novel insecticides represents a milestone in insecticide research over the past three decades. The neonicotinoids represent the fastest-growing class of insecticides. Imidacloprid is one of the major representatives of the new generation of neonicotinoid insecticides derived from nicotine isolated from the tobacco plant. Worldwide, it is considered t...

Formamidines are unique insecticides and acaricides that elicit multiple effects in controlling insects. Here, we tested two formamidines, amitraz, and chlordimeform, for their synergistic actions on type II pyrethroids and neonicotinoids to increase their larvicidal actions on the fourth instars of Aedes aegypti L. An organophosphate insecticide was used as a negative control. After 24 h, the ...

Imidacloprid is a newer insecticide of the group Neonicotinoids. It safer to humans and hence considered better alternative organophosphorus compounds, especially in areas like Nepal with higher incidence deliberate self-poisoning. There has been an increase number reported cases imidacloprid poisoning from South-East Asian countries, but none Nepal. We report case admitted Intensive Care Unit ...

Project History. In 2008 differences in colonization patterns at several different locations throughout the Central Sands were observed. These different patterns may be indicating changes in when CPB emerges from diapause. Previous research on other insect pests has documented behavioral shifts in emergence as a way insects avoid environmental stressors. An insecticidal agent, such as in-plant ...