نتایج جستجو برای: another neonicotinoids insecticide
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Neonicotinoids currently dominate the insecticide market as seed treatments on Canada's major Prairie crops (e.g., canola). The potential impact to ecologically significant wetlands in this dominantly agro-environment has largely been overlooked while the distribution of use, incidence and level of contamination remains unreported. We modelled the spatial distribution of neonicotinoid use acros...
Neonicotinoids, such as imidacloprid, are nicotinic acetylcholine receptor (nAChR) agonists with potent insecticidal activity. Since its introduction in the early 1990s, imidacloprid has become one of the most extensively used insecticides for both crop protection and animal health applications. As with other classes of insecticides, resistance to neonicotinoids is a significant threat and has ...
Pesticides that target cholinergic neurotransmission are highly effective, but their use has been implicated in insect pollinator population decline. Honeybees are exposed to two widely used classes of cholinergic pesticide: neonicotinoids (nicotinic receptor agonists) and organophosphate miticides (acetylcholinesterase inhibitors). Although sublethal levels of neonicotinoids are known to disru...
The causes of bee declines remain hotly debated, particularly the contribution of neonicotinoid insecticides. In 2013 the UK's Food & Environment Research Agency made public a study of the impacts of exposure of bumblebee colonies to neonicotinoids. The study concluded that there was no clear relationship between colony performance and pesticide exposure, and the study was subsequently cited by...
Honey bees (Apis mellifera) are one of the most important pollinating species flowering plants. Recently, populations honey have been declining due to a combination factors, including widespread use agricultural pesticides. Laboratory studies were conducted determine acute oral toxicity different formulated pesticides bee adults. In particular, we assessed two neonicotinoids (acetamiprid, Assai...
The impact of neonicotinoid insecticides on the health of bee pollinators is a topic of intensive research and considerable current debate [1]. As insecticides, certain neonicotinoids, i.e., N-nitroguanidine compounds such as imidacloprid and thiamethoxam, are as intrinsically toxic to bees as to the insect pests they target. However, this is not the case for all neonicotinoids, with honeybees ...
BACKGROUND Thiamethoxam, clothianidin, and imidacloprid are the most commonly used neonicotinoid insecticides on the Canadian prairies. There is widespread contamination of nectar and pollen with neonicotinoids, at concentrations which are sublethal for honey bees (Apis mellifera Linnaeus). OBJECTIVE We compared the effects of chronic, sublethal exposure to the three most commonly used neonic...
The impact of neonicotinoids on wild bees in the UK, Germ,any and Hungary. http://www.ceh.ac.uk/ourscience/projects/impacts-neonicotinoids-honeybees. View project PhD project on "Spatial patterns of springtail communities and populations: traits, space and environment" View project Dave Goulson University of Sussex 334 PUBLICATIONS 12,303 CITATIONS SEE PROFILE Simon G Potts University of Readin...
Several recently-published studies have reported on evaluations of the impact of neonicotinoid insecticides on pollinators,, often accompanied by considerable media attention claiming singular importance in explaining overall pollinator health status. These studies included evaluations of potential effects of sublethal doses of neonicotinoids on honey bees, the potential effects of exposure to ...
BACKGROUND Acetamiprid (ACE) and imidacloprid (IMI) belong to a new, widely used class of pesticide, the neonicotinoids. With similar chemical structures to nicotine, neonicotinoids also share agonist activity at nicotinic acetylcholine receptors (nAChRs). Although their toxicities against insects are well established, their precise effects on mammalian nAChRs remain to be elucidated. Because o...
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