نتایج جستجو برای: neonicotinoid
تعداد نتایج: 991 فیلتر نتایج به سال:
The survival of a species depends on its capacity to adjust to changing environmental conditions, and new stressors. Such new, anthropogenic stressors include the neonicotinoid class of crop-protecting agents, which have been implicated in the population declines of pollinating insects, including honeybees (Apis mellifera). The low-dose effects of these compounds on larval development and physi...
The impacts of pesticides, and in particular of neonicotinoids, on bee health remain much debated. Many studies describing negative effects have been criticized as the experimental protocol did not perfectly simulate real-life field scenarios. Here, we placed free-flying bumblebee colonies next to raspberry crops that were either untreated or treated with the neonicotinoid thiacloprid as part o...
Pressures from multiple, sometimes interacting, stressors can have negative consequences to important ecosystem-service providing species like the western honey bee ( Apis mellifera ). The introduced parasite Varroa destructor and neonicotinoid class of insecticides each represent important, nearly ubiquitous biotic abiotic bees, respectively. Previous research demonstrated that they synergisti...
Neonicotinoids, broad-spectrum systemic insecticides, are the fastest growing class of insecticides worldwide and are now registered for use on hundreds of field crops in over 120 different countries. The environmental profile of this class of pesticides indicate that they are persistent, have high leaching and runoff potential, and are highly toxic to a wide range of invertebrates. Therefore, ...
Acetamiprid is a first generation systemic neonicotinoid insecticide, routinely used for crop protection against sucking type insects. It is likely to be of low toxicity in mammals but severe poisoning may occur if ingested in large amount. A case of buffalo with accidental ingestion of acetamiprid was presented with severe gastrointestinal symptoms and respiratory distress. The patient w...
The ability to forage and return home is essential to the success of bees as both foragers and pollinators. Pesticide exposure may cause behavioural changes that interfere with these processes, with consequences for colony persistence and delivery of pollination services.We investigated the impact of chronic exposure (5-43 days) to field-realistic levels of a neonicotinoid insecticide (2·4 ppb ...
The dose makes the poison: have “field realistic” rates of exposure of bees to neonicotinoid insecticides been overestimated in laboratory studies? Norman L Carreck, Francis L W Ratnieks Laboratory of Apiculture and Social Insects, School of Life Sciences, University of Sussex, Falmer, Brighton, East Sussex, BN1 9QG, UK. International Bee Research Association, 6, Centre Court, Main Avenue, Tref...
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