Articles tagged with Insecticide Resistance
A five-year WHO investigation found treated bed nets continue to provide significant protection from malaria, despite rising insecticide resistance. The study supports the continued use of long-lasting insecticidal nets and calls for investments in new malaria-fighting tools to accelerate progress towards global elimination goals.
A study by Cornell University researchers suggests that certain weeds, like milkweed, can be beneficial to crops and the environment. By incorporating these weeds into agricultural systems, farmers may reduce their reliance on pesticides and herbicides, while also supporting biodiversity and pollinator health.
Researchers propose using mathematical models to drive evolution in local mosquito populations, favoring those that stay outside and hindering the spread of malaria. This approach could lead to more effective repellents and slower insecticide resistance.
Researchers propose using insect repellents along with insecticides to drive mosquito evolution that yields greater aversion to repellents, potentially slowing malaria development. This strategy could extend the lifetime of current insecticides and reduce resistance by favoring repelled mosquitoes over those developing resistance.
Plant breeders have struggled to combine high yield and resistance to Septoria in wheat varieties, but John Innes Centre researchers have found a genetic connection between the two traits. The study reveals that nearly 60 years ago, breeding decisions inadvertently linked increased susceptibility to Septoria with higher yields.
US soybean crop is under threat from the kudzu bug, but research has found that some wild relatives of soybeans have developed resistance to the pest. These adapted plants have built defense mechanisms against pests, including limiting the ability of nymphs to survive.
Scientists have developed a new gene-detecting technology that accurately pinpoints the location of disease resistance genes in large plant genomes. This has reduced the time it takes to clone these genes in wheat from five years to just two, enabling the creation of elite varieties with durable resistance to disease.
A new study found that different strains of bed bugs have varying levels of resistance to insecticides, with some having oxidases and others esterases. The researchers used a synergist called EN16/5-1 to determine which enzyme type was responsible for the resistance.
A new study found that doses of deltamethrin can interfere with the development of malaria parasites in mosquitoes, reducing transmission. Insecticide-treated nets remain a vital tool in preventing malaria, even in areas with resistant mosquito populations.
Wild tomato varieties exhibit dual resistance against whiteflies, which damages plants by extracting sap, creating honeydew, and transmitting viruses. Breeding these traits into commercial tomatoes could offer a sustainable solution for controlling the pest.
A massive research project has sequenced the bedbug genome, providing insight into its ability to resist insecticides. The study found that bedbug skin genetics play a crucial role in this resistance, and may also shed light on whether bedbugs originated from one or multiple sources.
A global research collaboration sequenced the bed bug genome, identifying genes linked to pesticide resistance, mating traits, and blood digestion. The study provides a comprehensive understanding of the biology of human ectoparasites and offers new avenues for controlling bed bug populations.
The researchers' findings could lead to more effective bedbug control and development of new insecticides. The study's data also provide insights into the genetic basis of bedbug adaptation to human environments.
Millions of dollars have been spent on insecticides to kill bedbugs, but a new study shows that overuse has led to increased resistance. Researchers found that bedbugs in Michigan and Cincinnati were up to 33,333 times more resistant to certain chemicals than susceptible strains.
A new study reveals bed bugs have developed resistance to neonicotinoid insecticides, making pest control more challenging. The levels of detoxifying enzymes in the resistant bed bugs were higher than those in susceptible populations, indicating pre-existing resistance mechanisms may have contributed to this development.
A study by Liverpool School of Tropical Medicine researchers reveals that evolution can be highly predictable in terms of developing toxin resistance. Convergent evolution of two amino acid changes in a specific gene leads to the development of toxin resistance in various animals, including insects, reptiles, and mammals.
Researchers found that lice populations in 25 states have high levels of gene mutations linked to resistance to pyrethroids. The most resistant populations are from California, Texas, and Florida, where lice have all three genetic mutations associated with knockdown resistance.
Researchers have identified new genetic markers for mosquito resistance to insecticides, which could improve its detection in the field. The study also found that mutations affecting detoxification enzymes can increase the biodegradation of insecticides in resistant mosquitoes.
Researchers at Clemson University are studying Bt toxin hybrids to control pest populations in corn. They found that some resistant insects have developed changes in susceptibility to the toxins, highlighting the need for continued monitoring and management strategies.
Researchers have identified over 14,000 genes in the blowfly genome, which can now be investigated for potential drug and vaccine targets. The discovery provides insights into the fly's molecular biology and its interactions with sheep, offering new avenues for combating the devastating flystrike disease.
Research by Thomas Werner and colleagues sheds light on pesticide resistance in Asian fruit flies and links it to cancer-causing genes, providing new insights into human health.
A study published in Journal of Medical Entomology found that ActiveGuard mattress liners impregnated with permethrin significantly reduce bed bugs' ability to feed and lay eggs. The researchers found that even sublethal exposure to the fabric can have far-reaching consequences for bed bug populations.
A hybrid of two malaria mosquito species has been found to be highly resistant to insecticide-treated bed nets, threatening efforts to control malaria in Africa. The discovery highlights the urgent need for new and effective vector control strategies.
Researchers have identified a natural resistance gene in white spruce trees that makes them resistant to the devastating spruce budworm. The gene, betaglucosidase-1, produces compounds toxic to the caterpillar, potentially allowing for replanting of forests affected by the pest.
A new study published in Science Express reviews progress in addressing challenges using evolutionary histories and rapid adaptation approaches. The research highlights the urgent need for better implementation of these strategies to combat escalating resistance to antibiotics and pesticides.
Researchers have found that non-coding RNA studies can improve crop resistance to pathogens and pests, reducing the need for chemical pesticides. This new approach uses small RNAs to repress the expression of target genes, promoting healthier plant development and improved nutritional value.
Researchers have identified a novel mechanism of resistance in pink bollworm insects to genetically engineered Bt cotton, which could impact the effectiveness of integrated pest management strategies. Alternative splicing is responsible for the diverse variants of cadherin protein that confer resistance.
Scientists used caffeinated fruit flies to map genetic variations associated with resistance to insecticides. The study identified two key genes that contribute to resistance, offering insights into developing more targeted and efficient pest control strategies. By exploring the genetics of xenobiotic resistance, researchers can uncove...
Researchers at LSTM have discovered the combination of genetic mutations that enable mosquitoes to develop multiple and extreme-level resistance to insecticides. The study identifies two key genes, CYP6M2 and CYP6P3, which are highly expressed in resistant mosquitoes and can confer resistance across different classes of insecticides.
Cornell research reveals that natural enemies like ladybeetles can delay pest resistance to Bt crops, reducing the need for multiple genes and refuge plants. This finding supports the use of Bt crops in agriculture while minimizing pesticide usage.
Resistance to pesticides has increased in nearly a thousand pest species, including insects, weeds, and fungi. Entomologists updated definitions for key terms related to resistance to facilitate understanding and management of the issue.
A single genetic mutation in the GSTe2 gene causes mosquitoes to break down DDT, making them resistant to the insecticide. This discovery could help improve malaria control strategies by allowing for early detection and tracking of resistance.
Researchers at the Max Planck Institute discovered that banana plants accumulate specific toxins in infected root tissues to resist parasitic nematode Radopholus similis. The localized accumulation of defense substances inhibits further propagation of the pest, leading to its death.
Western corn rootworm has shown resistance to Bt corn proteins, but a new study recommends using an integrated pest management approach to delay further resistance. The authors suggest rotating crops, using different Bt proteins, and implementing long-term monitoring to prolong the effectiveness of management strategies.
A University of Oklahoma research team found that a commonly used aquatic crustacean, Hyalella azteca, can adapt to polluted conditions and become an unreliable source of information about ecosystem health. The species' genetic mutations allow it to survive at high doses of pyrethroid insecticides.
Researchers have identified the genetic basis for resistance to amitraz in cattle ticks, which can cause devastating diseases. The discovery paves the way for a new genetic test that will help farmers make informed management decisions.
Scientists have identified genes responsible for bedbug pesticide resistance, enabling them to thrive in homes and hotels. The discovery highlights the need for a multi-faceted approach to manage bedbug infestations, including integrated pest management and non-chemical measures.
The Entomological Society of America has elected ten new Fellows, Dr. Charles Vincent and Dr. Jeffrey G. Scott, who have made significant contributions to entomology in research, teaching, extension, or administration. The fellows will be recognized at the ESA's 61st Annual Meeting in Austin, Texas.
A team of researchers has discovered a second gateway that could turn the tide against mosquito-borne diseases. The discovery reveals a new receptor in the sodium channel that allows mosquitoes to survive exposure to insecticides.
Scientists found superconductivity in carbon disulfide at -449°F, a highly disordered state that defies conventional understanding of superconductivity. The discovery could lead to new insights into the interplay between superconductivity, magnetism, and structural disorder.
Two studies by the University of Pittsburgh researchers found that wood frogs living near agricultural fields are resistant to chlorpyrifos and other insecticides. This increased resistance may be an adaptation to frequent exposure to pesticides, which can harm amphibian populations.
A new genetic analysis of human lice from around the world sheds light on their evolution, disease transmission, and resistance to insecticides. The study's findings suggest that lice can be used as a tool to understand human migration patterns and test ideas about human evolution.
Researchers are studying different methods to kill sand flies, including screening insecticides and developing diagnostic tools. Sand fly resistance to pesticides is also being studied, which could help protect military personnel and others affected by this pest.
Researchers at the Max Planck Institute for Chemical Ecology identified a specific enzyme, CYP337B3, responsible for the cotton bollworm's resistance to pyrethroids. This discovery highlights the importance of understanding the genetic mechanisms behind insecticide resistance.
A study by researchers at the University of Arizona found that pest populations are evolving resistance to genetically modified cotton plants, which produce toxins derived from Bacillus thuringiensis. The discovery highlights the need for closer monitoring and countering of pest resistance to biotech crops.
To slow resistance of western corn rootworm beetles to genetically protected crops, much larger 'refuge' acreages of conventional crops have to be planted, two experts warn. Increasing refuge requirements can delay pest resistance and sustain the benefits of Bt corn.
Scientists recommend increasing refuge acreage for Bt corn to slow western corn rootworm resistance and promote integrated pest management. The current 20% refuge requirement may not be sufficient to delay resistance, and doubling the size of refuges could help sustain the success of transgenic corn.
A new report identifies strategies to improve the marketplace for malaria bed nets, aiming to save up to $630 million for the global community. The report suggests modifying policies to reduce costs and create market incentives for private enterprises to produce better-performing nets.
Dr. Amanda C. Hodges received the 2012 Distinguished Achievement Award in Extension for her extensive work on plant pest diagnostics, training, and research. Dr. Gregg S. Nuessly was awarded the 2011 Distinguished Achievement Award in Horticultural Entomology for his contributions to research and extension projects on turfgrass pests.
Increased use of glyphosate-type herbicides has led to a dramatic increase in genetically-resistant weeds, according to Penn State researchers. Integrated weed management programs, including planting cover crops and using mechanical control methods, can lower herbicide use by up to 94% while maintaining profit margins.
New research reveals that bed bugs can withstand high levels of inbreeding, allowing them to colonize and expand populations. This is a major contributing factor to the recent surge in infestations across the US and globally.
The study reveals unique genes that contribute to the spider mite's resistance to pesticides and its ability to produce silk threads. This breakthrough provides new insights into the evolution of arthropods and offers opportunities for developing more effective crop protection strategies.
A new artemisinin-based treatment has been shown to be highly effective in treating uncomplicated malaria, particularly in regions with high re-infection risks. The study, which involved over 4,000 children in sub-Saharan Africa, found that the combination therapy had excellent efficacy and significantly reduced recurrent infections.
A research team at Virginia Tech has discovered genetic mechanisms behind bed bug resistance to deltamethrin and beta-cyfluthrin. The study found multiple genes that enable the insects to detoxify these insecticides, making them less effective.
Scientists have developed two new Bt toxins, Cry1AbMod and Cry1AcMod, to overcome resistance in pest insects. These novel toxins are effective against five resistant species, including the diamondback moth and European corn borer.
A UA-led team of researchers discovered a new edge in overcoming resistance to certain pests by modifying the structure of crop-protecting proteins called Bt toxins. The modified toxins were found to be effective against some resistant strains, but not always working as expected and requiring further testing.
Scientists found that indoor spraying with bendiocarb dramatically reduced malaria transmission to near zero in Benin. The study's results provide reassurance that insecticides can still play a vital role in reducing the burden of malaria across Africa despite pyrethroid resistance.
Research in Senegal found growing resistance to a common insecticide class among mosquitoes, coupled with increased susceptibility of older children and adults, resulting in malaria resurgence. The study suggests that new strategies are urgently needed to mitigate the devastating effects of insecticide resistance on malaria control.
Scientists have developed a new test that can diagnose Aspergillus infection and spot signs of antifungal resistance to azoles. Using this test, the team found 55% of aspergillosis patients had telltale signs of resistance to azoles.
Scientists at Purdue University found that many wheat lines carrying resistance genes are ineffective against Hessian flies in the southeastern US. The study suggests that combining two unreleased genes may be the best option to create more effective resistance.