Articles tagged with Pest Control
A new study reveals how viral proteins from symbiotic bacteria manipulate sperm in male insects, causing sterility and preventing the spread of diseases like Zika and dengue. The research could lead to refined techniques to control populations of agricultural pests and insect vectors.
The study found that the fungus begins affecting the insect's behavior two days after spraying bioinsecticides, reducing its feeding activity and pathogen transmission. The fungus is a natural, wild species that does not pose a hazard to human or animal consumption, making it a potential alternative for organic crop control.
Researchers at Martin-Luther-Universität Halle-Wittenberg developed novel RNA- or DNA-based substances that reliably fight off viral infections in plants. The new approach uses antisense oligonucleotides to target specific viral RNA molecules, achieving an impressive up to 90% success rate against a common virus.
A study using forest inventory data from over 25,000 plots found that biodiversity strongly suppresses pathogens and pests in many plant and animal systems. The 'dilution effect' of biodiversity on forest pests is jointly controlled by diversity and phylogenetic composition.
Researchers in Canada develop a new method to control the pepper weevil using gamma irradiation. The study found that insects sterilized at 110 Gy are completely sterile and cannot reproduce, making it an effective strategy for managing this economically significant crop pest.
Scientists at UC Riverside have discovered a tiny worm species that can control crop pests in warm, humid environments. The new Steinernema adamsi nematode is nearly invisible and can kill insects with a low dose, making it a potential alternative to pesticides.
The biodegradable sensor, made from plant-based material, can detect pesticide levels in minutes and has the potential to help assure food safety. The study showed that washing and immersion were insufficient to remove residues of pesticides, highlighting the need for reliable detection methods.
Researchers discovered that male large black chafer beetles have a 48-hour circadian clock to detect female pheromones, synchronized with females' mating behavior. The study sheds light on the biological mechanism behind this unusual cycle, leaving experts wondering about the underlying cues that govern natural rhythms.
Researchers find laser scarecrows significantly mitigate bird damage to sweet corn, reducing crop loss by up to 20%. The technology is effective when combined with other non-lethal deterrents, offering a silent and sustainable solution for protecting crops.
A collaborative program called Vector Educational Center for Training, Outreach and Resources (VECTOR) aims to expand control capacity against vector-borne diseases across Texas and Louisiana. The program will improve education, training, and outreach efforts focused on prevention around the region.
Researchers have assembled the entire genetic code of the brushtail possum, revealing population diversity, reproduction, and origins. The study's findings provide valuable knowledge for managing the animal's populations in both New Zealand and Australia.
Researchers found a 70% reduction in wild pig populations and a corresponding decline in environmental rooting damage within 24 months of control efforts. The study suggests that management efforts exceeding 40-60% population removal per year can significantly reduce populations, but unknown is the rate of recovery if efforts cease.
A new study reveals the meadow spittlebug can feed on more than 1,300 plant species, making it a major vector for incurable plant diseases. The insect's unique ability to spread pathogenic bacteria poses a significant threat to global food security.
A recent study published in Current Biology found that invertebrate decline affects aboveground pest control and belowground decomposition of organic matter. The loss of invertebrates leads to a reduction in important ecosystem services and decoupling of ecosystem processes, making immediate protection measures necessary.
Researchers at the University of California San Diego have developed nanoparticles that can deliver pesticide molecules to soil depths previously unreachable, targeting root-damaging nematodes. The technology holds promise for enhancing treatment effectiveness while minimizing costs and environmental toxicity.
A recent UTSA study reveals that 51% of Texas owls have high levels of anticoagulant rodenticides in their systems. The research team recommends using natural methods to control rodents and increasing awareness of the effects on non-target wildlife.
Researchers found a 5% sodium hydroxide solution successfully turns live Lebbeck mealybug specimens green, identical to the 10% potassium hydroxide solution. The new alternative is less corrosive, more water soluble and less expensive.
A new R package, lydemapr, has been developed to track the spread of the invasive Spotted Lanternfly in the US. The dataset contains detailed information on the pest's presence, establishment status, and population density across over 650,000 observations.
A new study highlights the difficulties in identifying and categorizing domestic and wildcats, threatening native biodiversity conservation efforts. In contrast, New Zealanders tend to be more accepting of killing feral cats to protect native species.
A new study analyzed existing research on bee-protective measures and found that many common methods are backed by minimal scientific evidence. Researchers urge stronger testing to evaluate effective measures and warn of potential waste of time if ineffective.
A study reveals high levels of insecticide resistance among Aedes aegypti populations in Dhaka, compromising mosquito control and increasing dengue burden. Researchers recommend non-insecticidal approaches, such as Wolbachia-infected mosquitoes, to effectively manage dengue vectors.
A meta-analysis reveals that birds generally have a net benefit on production for some crops by controlling pests. Non-lethal measures to deter birds are effective in reducing crop losses. The study found that around 10% of bird species consume crops, with 65% showing a positive effect on woody crop yield.
Researchers found that biting midges responsible for transmitting the virus are active on warmest days throughout the winter, contrary to previous theories. The discovery suggests that bluetongue virus transmission is likely ongoing year-round, with potential economic impacts for cattle farming.
Researchers discovered that squash bug nymphs are attracted to the feces of adults of their own species, even in the dark or from a distance. This behavior is crucial for the bugs' survival as they need a healthy microbiome to grow and stay alive.
Scientists at the University of Tokyo have discovered a pheromone that reduces fear in rats, which could lead to more humane methods of pest control. The researchers found that this pheromone, 2-methylbutyric acid, can calm both lab and wild rats, reducing their fear responses.
The article discusses the challenges of reducing agricultural greenhouse gas emissions to zero, but found that technology can help farmers lower pollution by up to 45 percent. The study proposes using carbon-free energy sources, sustainably produced bioenergy, and techniques to capture emissions from these energy sources.
Researchers used deep learning to analyze drone images of pine trees, detecting pine processionary moth larvae nests with high accuracy. The method can be applied in various settings to inform tree health managers about potential threats.
Researchers discovered that ambrosia beetles Xylosandrus germanus use the volatile compounds of their fungal symbionts to aggregate and potentially kill trees. This finding suggests a new method for biological control by targeting specific beetle species with trapping lures based on these compounds.
Researchers at North Carolina State University found that adding nonanal, a chemical used in perfumes, to a pheromone blend increases its effectiveness in mimicking female fall armyworm calls. The discovery could help farmers detect and control fall armyworm populations more effectively.
A new study suggests that increased awareness of biopesticide market availability, efficacy, and field application processes could help tackle locust outbreaks in China. The researchers argue that future studies should focus on modeling the expected impact and cost effectiveness of chemicals versus biopesticides.
Researchers have developed a cubic molecule platform that can improve the properties of hydrocarbons like cubane, which was previously overlooked due to limited synthesis. This breakthrough enables the incorporation of nitrogen atoms, facilitating biologically desirable interactions and expanding options for chemists.
A new digital tool, IWM Tool, has been developed to help farmers design and implement integrated weed management strategies, reducing pesticide use by 50% by 2030. The tool provides a user-friendly approach to diversify weed management strategies, fitting specific needs.
Researchers have shed light on the molecular mechanisms allowing beetles to absorb water rectally, a property enabling them to survive in extremely dry environments. This knowledge could be used to develop more targeted and eco-friendly methods to combat beetle species that destroy food production.
A new CABI-led study suggests that biopesticides are more effective and environmentally friendly than chemical pesticides for controlling the fall armyworm. The researchers found that untreated plots showed higher larval density and plant damage, while biopesticide treatments showed lower parasitism rates.
Researchers developed new spiro-pyrazolo quinazoline derivatives with reduced bee toxicity without compromising insecticidal activity. The compounds showed promising results, including one compound with an LD50 value three to four orders of magnitude lower than fipronil.
Scientists have identified horizontally transferred genes in insect genomes as valid targets for selectively killing green peach aphids and whiteflies. Silencing these genes using RNA interference reduces pest survival by up to 40%, with potential expansion to other insects through 'stacking' multiple targets.
Researchers have characterized the tar spot pathogen on a molecular level, revealing its virulence molecules target specific plant organelles. This study advances our understanding of plant-pathogen interactions and contributes to developing disease control strategies.
Scientists at UC Riverside have discovered that volatile repellents containing ammonia and amines can be used to combat insect-borne diseases by disrupting their sense of smell and taste. The research found that these compounds can silence olfactory neurons in mosquitoes, preventing them from detecting human skin odor.
Researchers at Nagoya University discovered that when Ceratocystis ficicola and Fusarium kuroshium fungi are combined, fig saplings experience rapid wilting. The two fungi work together to cause more damage than either one alone, highlighting the importance of considering co-occurring microorganisms in disease control strategies.
A meta-analysis of transcriptome data from aphids and locusts reveals that DNA replication, metabolic processes, and the mitotic cell cycle are enriched in response to crowded conditions. The study also identifies discrepancies with previous research findings, suggesting alternative explanations for gene expression patterns.
A study published in PLoS Genetics reveals the mechanism by which a selfish gene in yeast, wtf4, enables its function using a poison-antidote strategy. This strategy involves the production of poison protein that can kill spores, but is countered by an antidote protein produced only by those spores that inherit the drive allele.
Researchers analyzed over 4,500 documents to understand fungal dispersal across spatial scales. They identified four scales of movement, from microscopic to landscape, and found that climate change affects where fungi reside. More data is needed to understand the biodiversity of fungi and their movement in ecosystems.
Through its Integrated Pest Management program, WVU Extension educates growers on safe techniques, including barriers, insect traps, and predatory insects. The goal is to reduce pesticide use and promote environmentally friendly practices.
Researchers used weather radar to track bird movements and found peak roosting stages shifting earlier due to warmer temperatures. This shift may lead to a shortened pre-migratory season, impacting birds' survival during migration.
Research found that air pollution from diesel exhaust and ozone significantly reduces the reproductive success of parasitic wasps controlling aphids on oilseed rape plants. The pollutants alter plant chemistry, attracting a specific wasp species more successfully.
Researchers discovered that two approved insecticides can damage honey bees' intestinal flora, making them more susceptible to disease. The study highlights the need for rigorous research on pesticide effects on beneficial insects before approval.
Researchers have made a surprising discovery that liquid smoke can enhance plant defense against pests and diseases, leading to new farming practices. The study found that sunflowers grown in soil treated with liquid smoke had larger, thicker, and greener leaves and appeared less prone to pests and disease.
Researchers discover that male spotted lanternflies are strongly attracted to the smell of honeydew produced by male conspecifics, emitting specific sex-attractant profiles. This finding may lead to the development of new pest management tools to reduce the population and spread of this invasive species.
A recent study found that climate change could increase suitable habitat for the brown marmorated stink bug in the US by 70%. The insects are a generalist herbivore, known to feast on nearly 170 different plants, including crops and ornamental plants.
Researchers found the moths originated from the Baja Peninsula and Arizona, with a new subspecies discovered in western North America. The study recommends using synthetic pheromones to control the invasive pest.
Researchers at University of California - Riverside discovered a chemical cocktail in human skin that summons disease-spreading mosquitoes. The combination of carbon dioxide plus two chemicals, 2-ketoglutaric and lactic acids, elicits a scent that attracts female Aedes aegypti mosquitoes, vectors of Zika and other viruses.
UC Riverside scientists are working with Jocelyn Millar to find the avocados weevil pheromone, which could be used to monitor pests and prevent them from mating in orchards. The goal is to reduce damage to fruit and enable growers to use less insecticides.
A global report reveals ladybird species are poorly understood due to human activities, and urgent conservation actions are needed. The research emphasizes the importance of protecting habitats, particularly those that provide overwintering sites for ladybirds.
A newly identified species of Liberibacter, a family of bacteria known for causing citrus greening disease, is rapidly evolving its ability to infect insect hosts. The research team found 21 genes associated with infectious qualities and identified mutations affecting pilus proteins that allow the bacteria to move into host insects.
A recent study by Xi'an Jiaotong-Liverpool University provides a method to help farmers and policymakers decide whether organic farming is beneficial for the environment. The researchers analyzed international studies to find a threshold where organic farming's biodiversity gain outweighs its land requirements.
Quantitative disease resistance is a promising approach to combat plant diseases, which cause an estimated 13% loss of global crop yields annually. Researchers aim to identify disease resistance mechanisms for important corn diseases and develop genetic resources for the broader maize genetics community.
Researchers identified peak emergence times for 15 problematic weed species in the Northeast, revealing that waiting till after June 1 can avoid common ragweed. Flexible crop rotations and weather-based predictions can help farmers plan ahead and control weeds more effectively.
Researchers explored agri-food and environmental implications of Shanghai's pesticide use reduction policy, finding that imposing the policy at district level reduced crop acreage but alleviated pollution in water resources. The study suggests regional-level implementation can improve outcomes while maintaining food security.
Alison Ravenscraft, a UTA assistant professor of biology, has received a $895,000 grant from the NSF's Faculty Early Career Development Program. Her research focuses on how gut microbiota helps insects break down plant toxins, potentially reducing crop losses and pesticide use.
A Washington State University research team developed a system using cameras and small drones to detect and deter pest birds. The system successfully reduced bird counts by four-fold in vineyards, resulting in a 50% reduction in damaged fruits. Further refinement and industry partnerships are needed for commercialization.