نتایج جستجو برای: organophosphate insecticide
تعداد نتایج: 14741 فیلتر نتایج به سال:
BACKGROUND Toxicity of organophosphate insecticides is mainly due to the inhibition of acetylcholinesterase (AChE). However, organophosphate insecticides in acute, as well as in chronic and subchronic intoxication may lead to oxidative stress causing the enhancement of lipid peroxidation and changing the activities of antioxidative enzymes. Paraoxonase PON1 is synthesized by the liver. This enz...
Mosquito borne diseases such as malaria and dengue cause extensive morbidity and mortality and are a major economic burden within disease-endemic countries. Control of both these diseases, which in most countries are primarily transmitted in and around the home, is difficult. Malaria and dengue are effectively managed through a combination of vector control, drugs and management of clinical ill...
BACKGROUND In the tropics, the utilization of insecticides is still an important strategy for controlling Aedes aegypti, the principle vector of dengue, chikungunya and Zika viruses. However, increasing insecticide resistance in Ae. aegypti populations might hinder insecticide efficacy on a long-term basis. It will be important to understand the dynamics and evolution of insecticide resistance ...
Large-scale losses of honey bee colonies represent a poorly understood problem of global importance. Both biotic and abiotic factors are involved in this phenomenon that is often associated with high loads of parasites and pathogens. A stronger impact of pathogens in honey bees exposed to neonicotinoid insecticides has been reported, but the causal link between insecticide exposure and the poss...
The objective of this study was to evaluate insecticide toxicity on Bemisia tabaci, Tetranychus evansi, Orius insidiosus, Cycloneda sanguinea and Chauliognathus flavipes in tomato plants. The following toxicity treatments were applied: T1: control, T2: chlorpyrifos (Pitcher) 450 EC (1.25 L.ha), T3: chlorpyrifos 450 EC (Pitcher) (0.62 L.ha), T4: thiamethoxam 100 WG (1.00 L.ha), T5: thiamethoxam ...
For more than 30 years temephos, an organophosphate insecticide, has been the sole larvicide used in Brazil in the control of Aedes aegypti. Organophosphates were also used for adult control, being replaced by pyrethroids since 1999. In this same year the Brazilian Health Foundation started the coordination of the Ae. aegypti Insecticide Resistance Monitoring Program. In the context of this pro...
The organophosphate temephos has been the main insecticide used against larvae of the dengue and yellow fever mosquito (Aedes aegypti) in Brazil since the mid-1980s. Reports of resistance date back to 1995; however, no systematic reports of widespread temephos resistance have occurred to date. As resistance investigation is paramount for strategic decision-making by health officials, our object...
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