Articles tagged with Insects
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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.
Epidemiological maps suggest South Texas is an area of high risk for Chagas infection, with potentially hundreds of undiagnosed cases. The disease can be hard to detect and may be misinterpreted as a flu-like illness, leading to delayed diagnosis.
Researchers from the University of Exeter found that male insects are not aggressive towards their mates but instead protective and willing to risk their lives to ensure female safety. This challenges previous assumptions about insect relationships, suggesting a more nuanced understanding of natural selection in the wild.
In a study of wild field crickets, males are found to protect females from predators, increasing their chances of survival. In exchange, paired males sire more offspring with each partner, suggesting that this 'chivalry' may have evolutionary benefits. The findings challenge traditional interpretations of male guarding behavior.
A new species of fossil silky lacewing insects has been discovered in China, providing insights into the evolutionary history of the family Psychopsidae. The newly found species, Undulopsychopsis alexi, exhibits unique characteristics, including an undulate wing margin and unusual venation patterns.
A University of Hull study found that weeds are vital to the existence of many farmland species, providing food for over 330 species of insects, birds, and animals. The research also showed that increasing farm management intensity can lead to a decline in seed biomass and energy, affecting farmland biodiversity.
Scientists have created compounds that can force corn earworms out of dormancy prematurely, prevent them from entering diapause, or block its termination. This could lead to effective tools for controlling pests and reducing agricultural losses estimated at $2 billion annually in the US.
A team of Chinese researchers analyzed 4793 publications to identify potential host species for the Tibetan medicinal fungus Ophiocordyceps sinensis. The study found 57 recognizable potential hosts, 8 indeterminate hosts, and 26 non-hosts, providing basic information for managing insect resources and conserving the fungus.
The Entomological Society of America recognizes Marvin K. Harris, Gail E. Kampmeier, Kevin L. Steffey, and two others for their significant contributions to the field of entomology. These honorees have demonstrated extraordinary commitment to the society through their service, research, and leadership.
Research by Thomas Marler and Karl Niklas examines environment's influence on Guam cycad reproduction, finding wind's role in seed production is less crucial than initially thought. The study suggests insects play a more significant role in pollination, highlighting the need for conservation efforts to protect the endangered species.
A combination of strategies, including eliminating stagnant water and removing vegetation, significantly reduced the number of tiger mosquito eggs in treated areas. The study, published in Transactions of the Royal Society of Tropical Medicine and Hygiene, demonstrates a substantial reduction in eggs compared to control areas.
Scientists uncover ancient fossils of Coxoplectoptera, an insect order that defies classification, offering clues to the evolution of wings and lifestyle. The discovery presents a new hypothesis on the development of insect wings, suggesting they originated from thoracic backplates.
Researchers discovered that hummingbird beaks can 'snap-buckle' to catch insects in mid-air, using elastic energy stored in the bone. This phenomenon allows for faster and more powerful insect capture than could be achieved by jaw muscles alone.
A rare bioluminescent fungus has been rediscovered in Brazil, shedding new light on its unique glowing properties. The fungus, previously seen since 1840, was reclassified and found to have a different bioluminescent mechanism than other fungi.
In the annual MEMS student design contest, Texas Tech University won for their novel insect-inspired micro-dragonfly design that generates aerodynamic lift and thrust. Carnegie Mellon University took the educational category with a highly sensitive microvalve that requires picoJoules of energy to switch its state.
A 100-million-year-old mayfly fossil has provided valuable insights into the ecology of ancient ecosystems. The discovery of a rare ovipositor and long antennae sheds light on the life cycle and adaptations of this ancient species.
A Kansas State University plant pathologist is discovering high levels of viral infections in the state's wheat crops. Anna Whitfield's research reveals that viruses are a significant threat to wheat yields, with losses due to these diseases expected.
Scientists from LMU Munich have developed a concise and efficient method for synthesizing the alkaloid loline and related compounds. The new approach enables the production of these compounds in sufficient quantities to investigate their various aspects, including their interactions with insects and bacteria.
A four-year study aims to understand the role of serpin-2 in mosquito immunity and physiology. Researchers hope that targeting this molecule could make mosquitoes more susceptible to diseases like malaria.
Researchers warn that seed mixtures could increase the risk of pest resistance and reduce choices for growers, highlighting concerns over integrated pest management. The use of biotechnology in seed mixtures may lead to increased pressure on the soil insecticide market as resistance develops.
Michigan State University researchers found that scorpion venom selectively targets insect sodium channels, making it a valuable tool for developing new insecticides. The study aims to understand how insects develop resistance and create alternatives to control resistant pests.
Researchers at Max Planck Institute for Chemical Ecology sequenced the antennal transcriptome of the tobacco hornworm moth, revealing specific proteins involved in olfaction. The study identifies 18 odorant binding proteins and 21 chemosensory proteins, providing new insights into the insect's ability to detect and process odor molecules.
Research from the University of Arizona found that bacteria in the genus Rickettsia can rapidly evolve whiteflies, making them more likely to survive and reproduce. The bacteria manipulate sex ratios, causing more female offspring to be born, which is unusual for such a short period.
A recent study reveals that bats save the US agricultural industry at least $3 billion a year by controlling insect pests. The analysis also warns of potential losses due to white-nose syndrome and wind-energy facility fatalities, emphasizing the need for bat conservation.
Bats play a crucial role in reducing pesticide use and crop damage, with estimates suggesting their value to agriculture is roughly $22.9 billion annually. However, widespread bat population declines due to diseases like White-Nose Syndrome and wind turbine collisions threaten this ecological balance.
Scientists at Cardiff University discovered that spiders can intercept and use vibrational signals from insects to locate their prey. The study found that male leafhopper vibrations are more attractive to predatory spiders, suggesting a preference for males during courtship.
A collaborative EUREKA project developed an integrated pest management system, reducing rice waste by over 95% through sustainable technologies. The system uses electronic insect traps, aeration, and modified atmosphere to protect rice during storage, improving quality and food security.
Researchers found that night-flying moths match the migration speeds of songbirds, traveling between 30-65 km/h. Moths use favorable tailwinds to aid their journeys, while birds take advantage of winds from various directions.
A new study uses genetic techniques to link bat diet to habitat quality, showing that bats rely heavily on insects from aquatic environments. The research also identifies specific pollution tolerances among insect species, providing insights into the bats' foraging behavior and conservation efforts.
The University of Illinois team produces animated educational videos on topics like insect control and water treatment to reach a larger audience at a fraction of the cost. The initiative uses cell phones as a platform to distribute the content, targeting viewers in both developing and developed countries.
Scientists discovered an 'atmospheric imprint' in insects, revealing where they can survive under climate change. By analyzing oxygen isotopes, researchers determined the type of atmosphere each insect needs to thrive.
Research at the University of Michigan suggests that rising carbon dioxide levels associated with global warming may affect interactions between plants and insects, altering the course of plant evolution. The study found that plant families responded differently to elevated carbon dioxide in their production of chemical and physical de...
Researchers have discovered a 100-million-year-old ancestor of large, carnivorous insects still alive today. The genus has undergone little change since the Early Cretaceous Period.
A study investigated the impact of disease-resistant genetically-modified (GM) wheat lines on insect food webs. The findings show that the differences between GM and non-GM wheat strains are similar to those found between different conventional wheat strains, suggesting no ecological problems with GM wheat.
A recent study on bedbugs has identified potential genes associated with pesticide resistance, shedding light on the mechanisms behind their increasing resilience to insecticides. The research may lead to the development of novel control methods that are more effective against these troublesome insects.
Researchers discovered aphids on ginger and heliconia plants have genetic differences from those on banana plants, reclassifying them as a separate species Pentalonia caladii. This finding has significant implications for the biological control of banana aphids and preventing the spread of BBTV.
Researchers found that mechanical shaking was more effective than manual shaking in removing yellowjacket queens from Christmas trees. The study also showed that pre-harvest insecticide sprays can be 100% effective in killing yellowjacket queens, even after heavy rainfall.
Researchers at Caltech, with support from the Air Force Office of Scientific Research, have found that flies follow horizontal edges to regulate altitude, unlike earlier studies suggesting they measure motion beneath them. This edge-following behavior is similar to their steering mechanism and relies heavily on vision.
A study published in BioScience found that nonindigenous insects are being detected at a rate of 2.5 per year, with high-impact insects and pathogens causing tree death and other effects every 2 to 2.5 years. The researchers advocate strengthening efforts to prevent arrivals of nonindigenous organisms.
Researchers identified top 100 known insect pests most likely to establish in the US and individual states, finding that many pests are missing from neighboring states. The study found significant negative relationships between state size, biodiversity, domestic air passengers, and GDP and absent pest species.
Researchers have modeled and mimicked the natural designs of falling geckoes, gliding snakes, and flying birds to improve air vehicle design. The special edition, 'Bioinspired Flight', reveals innovative approaches for controlled hovering, forward flight, and exploitation of thermal updrafts.
New study maps koala habitats using taste preferences, while ancient insects migrated to warmer climates in response to rising temperatures. Koalas prefer large trees with palatable leaves and avoid smaller unpalatable trees, highlighting the importance of habitat quality.
Researchers at Virginia Tech have discovered a single P450 enzyme responsible for producing two common plant volatiles that defend against insect attacks. The discovery provides new insights into the biosynthesis of these compounds and offers potential applications in improving crop pest controls.
Arizona State University has received a $100 million grant from the Bill & Melinda Gates Foundation to develop long-acting insect repellents for malaria prevention. The project aims to create skin-bonding repellents that can provide continuous protection against mosquitoes for two to three weeks.
Researchers have developed 140 hemlock hybrids that are tolerant to the invasive hemlock woolly adelgid (HWA), a devastating insect affecting eastern US forests. The most tolerant species is T. chinensis and its hybrids, which show good vigor and shape, providing a potential solution for saving US natural ecosystems.
A boom in developing chemical coatings is protecting seeds from destructive insects and diseases, with the worldwide market growing at 10-12 percent annually. These new seed treatments, also known as biologic seed defenders, use microorganisms to promote earlier and more vigorous growth.
Professor Eamonn Keogh will use the grant to develop automatic insect sensors that can detect and classify mosquitoes at a low cost. The project aims to understand mosquito movement to combat malaria, which kills nearly one million people worldwide each year.
A Hebrew University-developed insect control method, applied in Mali, demonstrates a significant decline in malaria-bearing mosquitoes. The Attractive Toxic Sugar Bait Method (ATSB) significantly reduced mosquito populations and is considered a powerful tool for controlling malaria vectors.
Researchers at the University of Arizona have developed a novel approach to controlling pink bollworm pests in cotton fields. By combining pest-resistant cotton with the controlled release of sterile moths, they have virtually eliminated the pest from Arizona, allowing growers to maintain high yields without spraying insecticides.
Researchers at Case Western Reserve University developed new software to analyze the three-dimensional movement of an insect's leg joints, allowing for a detailed understanding of cockroach locomotion. The software enables 90% accurate analysis of 106,496 individual points in hours, not weeks.
A massive amber deposit discovered in India's Gujarat province has yielded over 700 arthropods from 55 different genera, including insects, spiders, and mites. The findings contradict the long-held idea that India was isolated for 100 million years after breaking off from East Africa, suggesting a more complex exchange of species with ...
A new study finds that Bt corn provides significant economic benefits to neighboring farmers by reducing pest management costs and improving grain quality. The researchers estimate cumulative economic benefits of nearly $7 billion between 1996-2009, with benefits of over $4 billion for non-Bt corn farmers.
A study found that Bt corn's pest suppression benefits non-Bt farmers in Wisconsin by up to 75%, with total economic benefits exceeding $6.9 billion across the Midwest. The primary benefit of Bt corn is reduced yield losses, which non-Bt farmers also experience without paying Bt technology fees.
Researchers led by Dr. Robert Wood at Harvard University are developing micro air vehicles (MAVs) to monitor hazardous environments like collapsed structures and chemical spills. The goal is to create agile devices that can perform tasks not achieved before using robotic devices on the scale of insects.
A fungus-based biological control agent, Beauveria bassiana, is enhanced with a sunscreen made from soybean oil and ferulic acid to protect its spores from sunlight. The 'soyscreen' successfully protects the spores for 28 weeks, improving its effectiveness in wiping out insect pests.
Researchers at Harvard University developed a millionth-scale automobile differential for minuscule aerial robots. The PARITy differential generates torques up to 10 million times smaller than in a car, allowing the robots to balance aerodynamic forces and navigate unpredictable environments.
Researchers create 'soyscreen' oil to protect fungal spores from sunlight, expanding use of fungus as insecticide alternative. The substance successfully protects spores for 28 weeks without harming them.
Researchers at Johns Hopkins Medicine found that mosquitoes and other insects use taste receptors to detect DEET and smell citronellal, leading to aversion responses. The study identified three essential taste receptors for DEET detection and two distinct types of cell surface channels required for avoiding citronellal vapor.
Fruit flies establish a fixed height by tracking horizontal edges and fly at the same altitude as these features. The researchers used a virtual-reality space to track the flies' movements and confirmed that edge tracking is the primary mechanism.
A new study predicts that the little brown myotis bat population in the Northeast will decline by over 99% within 20 years due to White-Nose Syndrome. The disease has already affected at least seven species of bats, with millions dying from its effects.