Articles tagged with Insects
Researchers at Rockefeller University and the University of Tokyo found that insects use fast-acting ion channels to smell odors, a major break with previous understanding. This new strategy allows for direct detection of odor molecules, bypassing complex biological apparatus previously thought to be necessary.
New Bt corn varieties have shown reduced levels of aflatoxin and lower rates of fungal infection, offering a potential solution to the global threat of this deadly toxin. The developments come as part of Monsanto's efforts to engineer better corn crops resistant to insect pests and environmental stressors.
Over 400 alien species are now considered invasive in China, with many causing significant harm to the environment. The rapid growth of China's industrial infrastructure is making it easier for organisms to spread and establish themselves throughout the country.
Researchers at Ohio State University identified 14 types of mold on and around Madagascar hissing cockroaches, including molds associated with allergies. Handling the insects may trigger allergic responses in sensitive individuals if proper cleaning and care are not taken.
Scientists at Rockefeller University have pinpointed DEET's molecular target in insects, showing that the widely used bug repellent acts like a chemical cloak, masking human odors. By targeting specific receptors, DEET confuses mosquitoes and prevents bites.
A combination of an insect protein and Bt toxin kills crop pests more effectively than either ingredient alone, inhibiting growth rate and reducing resistance. Researchers found a synergistic effect increasing mortality rates by over 10 times.
Researchers found that male yellow jacket paternity has no impact on colony dynamics, with females exhibiting cooperative behavior despite multiple mating. The study suggests a benefit to colonies for queens having multiple partners, leading to increased success and reproductive output.
Recent decades have seen a significant shift in oil palm research, with an increasing focus on the environment and biofuel production. However, biodiversity assessments remain scarce, particularly for insect species that carry out key ecosystem functions.
Research finds link between temperature and insect feeding on leaves, boosting foraging of plant-eating insects. The study links past climate spike to increased insect damage.
Researchers analyzed fossil leaves to understand the impact of climate change on insect populations, finding a correlation between temperature and herbivore damage. The study suggests that increased insect feeding will be a net effect of anthropogenic carbon dioxide increase and warming temperatures.
Researchers found that New Zealand parsnips had lower levels of chemical defenses than those in Europe and North America, making them more susceptible to the parsnip webworm. The webworms are dramatically affecting the plant's ability to reproduce, with 75% of affected plants devoid of reproductive parts.
New research reveals symbiotic bacteria in black bean aphids can exhibit a disruptive 'Hyde' side, slowing insect growth while allowing bacterial proliferation. This discovery may lead to new methods for controlling insect pests without relying on insecticides.
Researchers found that vacuuming is an effective way to kill fleas, with a high success rate in killing adult fleas (96%) and destroying younger stages (100%). The study suggests that the physical abuse caused by the vacuum's brushes and fans leads to flea death.
A study by Jean Pierre Kapongo found that Muscidifurax raptor is an effective biocontrol agent for controlling fruit flies in vineyards. This method reduces the need for chemical pesticides, benefiting the environment and promoting agricultural sustainability.
A 390-million-year-old sea scorpion fossil found in Germany shows that ancient arthropods like spiders and insects were much larger than their modern-day equivalents. The fossil claw is over a foot-and-a-half long, indicating these creatures were among the largest extinct arthropods.
Scientists have discovered a giant fossilized claw from an ancient sea scorpion, indicating that the creature was approximately 2.5 meters long and much taller than the average man. This finding suggests that spiders, insects, crabs, and similar creatures were larger in the past than previously thought.
Researchers have developed new designer toxins that can kill Bt-resistant insect pests, including the pink bollworm, a major cotton pest. The toxins work by modifying the way the insects' gut membranes respond to Bt toxins, rendering them ineffective.
Bacteria and nematode worms work together to kill insects using insecticidal toxins. The toxins, found in Photorhabdus luminescens, are also found in human pathogens Yersinia pestis and Yersinia pseudotuberculosis.
University of Illinois researchers warn that higher corn prices are causing some farmers to ignore integrated pest management (IPM) strategies, which could undermine the effectiveness of technologies that sustain them. IPM is a set of principles developed to minimize ecological impacts of pesticides and transgenic crops.
A new study demonstrates classical conditioning of salivation in cockroaches, revealing sophisticated neural control of autonomic functions. The findings provide a useful model system for studying cellular basis of conditioning in insects.
Researchers discovered nearly a dozen additional heat-shock proteins that help insects survive cold temperatures. These proteins are essential for insect survival during diapause, a hibernation-like state that allows them to withstand low temperatures.
Researchers found that thale cress responds differently to various plant pests and microorganisms, with specific hormone compositions leading to unique gene expressions.
Researchers have identified a specific class of small peptide elicitors that help plants react to insect attack, triggering defensive chemistry and improving protection against pests. The discovery opens the door for genetic manipulation of plants with improved defense mechanisms.
Researchers found that Photorhabdus produces a special phenoloxidase inhibitor to protect itself against an enzyme used by insects' immune systems. This discovery provides conclusive evidence for a gene-for-gene interaction between the bacterium and the insect, shedding light on insect immune systems.
Female ixodid ticks exhibit remarkable weight gain following mating, with some species increasing in size up to 100 times their original size. This phenomenon is linked to the tick's unique lifestyle and reproductive strategy, which involves prolonged feeding periods and specialized signals triggered by copulation.
Scientists discovered that European Beewolf females deliberately cultivate bacteria in their antennae to shield their larvae from fungal infections. The bacteria produce antibiotics, significantly enhancing the larvae's chances of survival during hibernation.
Researchers at Purdue University have discovered genes in wheat that neutralize toxic compounds produced by the Hessian fly larvae, making them vulnerable to attack. The study provides insight into the biochemical mechanisms involved in insect-plant interactions and may lead to novel strategies for enhancing wheat resistance.
Scientists studying hawk moths discovered the Johnston's organ, a tiny structure above the antenna, senses movement and sends signals to the brain. The antennae guide the insect's body back to correct heading through a fine-tuned mechanism.
Researchers have created a fly-by-sight micro-helicopter that mimics the flight capabilities of insects, including takeoff, level flight, and landing. The study reveals how insects use optic flow to maintain their position relative to the ground, providing insights into previously unexplained observations about insect flight.
Researchers discovered the first human case of insect-transmitted Chagas parasite in Louisiana, with over half of collected insects carrying the parasite. The finding, while significant, does not represent a widespread public health concern due to limited rural housing conditions.
A newly identified wheat gene produces proteins that bind to the stomach lining of Hessian fly larvae, causing them to starve. The gene's role in creating resistance to Hessian flies was a surprise to researchers, who found that it triggers a localized defense response that reduces energy costs for the plant.
A graduate student has discovered 25 new spiders and one previously unknown species in Brazos County, expanding the knowledge of local natural resources. The study highlights the importance of diverse spider populations in maintaining ecosystem balance.
Researchers found that moths can detect and respond to bat calls, even when others cannot. The yellow underwing moth's ear adjusts its sensitivity in response to changing sound frequencies, allowing it to stay 'tuned' for up to several minutes after the call stops.
Researchers have identified two molecular receptors in fruit flies that detect carbon dioxide, a key factor in attracting blood-feeding insects. This finding could lead to the design of insect repellents to combat global infectious diseases.
Researchers discovered a new diamondback moth variety that can thrive on hyperaccumulator plants guarded by toxic levels of selenium. The moth's adaptation allows it to accumulate selenium like the plant, rendering its defense ineffective. This finding suggests a potential
Researchers have discovered that female wasps release a potent gas when losing fights over larvae, which could help control crop-destroying pests. This finding has great potential for applied spin-offs in biological control.
A team of biologists at the University of California - San Diego has identified 27 different Tweedle genes in fruit flies, which they believe strengthen the cuticle. This discovery could lead to novel insecticides as the gene family appears to be unique to insects.
A Mayo Clinic researcher has identified a unique enzyme residue in greenbugs and aphids that could be targeted by a new generation of pesticides. This discovery opens the door to creating safer pesticides that would not harm humans and animals.
A new study reveals that plataspid stinkbug gut symbionts have evolved in tandem with their hosts, sharing unique genetic traits. The symbiotic lifestyle is crucial for the stinkbugs' survival, and its influence on genome evolution has been observed.
Researchers have developed a highly sensitive NMR probe to analyze small samples, unlocking volumes of information from tiny amounts of venom. This breakthrough could aid in finding natural substances for medicines and advance understanding of Alzheimer's disease.
Researchers found that caterpillars evolved different physiological mechanisms to adjust to carbohydrate-rich and low-carbohydrate diets. This study suggests that animals can adapt metabolically to extreme nutritional environments, which may have implications for understanding the human obesity epidemic.
Scientists discover GAL83 gene that allows plants to store carbon in roots, reducing damage from herbivore attacks. This adaptation enables plants to withstand voracious insects and extend seed production period.
New fossil evidence reveals plant and insect diversity were out of balance during Paleocene Epoch. Insect predation was low in most areas, but unexpectedly high in two early Paleocene sites, Castle Rock and Mexican Hat.
A recent study published in Science found that the number of tree species consumed by rainforest insects is comparable to those in temperate forests. The research, led by University of Minnesota plant biologist George Weiblen, rejects the notion that tropical insects are picky eaters who prefer fewer host plants.
A recent study published in Science found a direct link between tropical tree species diversity and the diversity of leaf-eating insects. The research team compared insect feeding habits in temperate and tropical forests, concluding that higher tree diversity supports more insect species.
A new method, metabolic stress disinfection (MSDD), sucks the life out of bugs by subjecting them to alternating vacuum and carbon dioxide, effectively suffocating organisms. The technique could replace post-harvest pesticides and may complete phasing out ozone-depleting methyl bromide, reducing chemical costs and environmental impact.
Researchers discovered that the glassy-winged sharpshooter insect has a surprising symbiosis with two bacteria, Baumannia cicadellinicola and Sulcia muelleri. The bacteria receive essential amino acids, while the insect receives vitamins and cofactors from them.
A new study led by Seth Bordenstein found that the WO-B virus interferes with Wolbachia's ability to cause cytoplasmic incompatibility, reducing bacterial growth. The research may aid in controlling insect-borne diseases and could pave the way for future strategies to control these diseases.
A recent study compared how natural 'machines' and man-made technologies overcome similar problems, revealing that only 5% of natural machines rely on energy in the same way. Instead, insects, plants, birds, and mammals use the structure and organization of their body parts and behavior to solve problems.
Researchers develop polymer tape to simulate insect adhesive pads, revealing optimal leg attachment forces on smooth ceilings. The findings inspire wall and ceiling walking machines with micropatterned polymer feet.
Researchers have discovered a plant enzyme called Mir1-CP that protects corn from pests by degrading insects' peritrophic matrix. The enzyme accumulates at feeding sites within an hour of caterpillar feeding, causing impaired nutrient utilization and inhibiting growth.
Researchers found that wasps use biting to recruit new foragers, particularly those who haven't left the nest before. The study reveals a crucial role of biting in communication and task performance within colonies.
Researchers discovered that bats employ sophisticated techniques to locate prey in cluttered environments, including adjusting the timing and frequency of their ultrasonic pulses. By analyzing high-speed camera footage and audio recordings, the team found that bats 'strobe' the air with sound to distinguish insects from background noise.
Z. Jane Wang's research uses dragonflies as a model to study efficient flight, challenging conventional wisdom that airplanes are more efficient than birds. The study suggests that using aerodynamic drag can be beneficial for certain types of flight, and may inspire the development of flapping machines.
Scientists identified a gene TPS10 that produces a specific scent attracting parasitic wasps to damaged corn plants. The wasps needed an initial exposure to both the scent and the caterpillar to react properly.
A team of scientists from the University of Arizona found no net increase in resistance to Bt crops, with a decrease in resistance reported instead. This is contrary to experts' predictions when these crops were first commercialized. The use of refuges has driven pesticide use to historic low levels, saving growers $80 per acre.
Researchers are exploring possible links between biting water insects, water quality, and Buruli ulcer transmission, with the goal of understanding the disease's transmission. The study aims to identify potential insect vectors and man-made changes in water quality that may be contributing to the increase in Buruli ulcer infections.
Researchers found that MXC alters estrogen-regulated gene Hoxa10 in the reproductive tract, reducing embryo implantation ability. Exposure to MXC has been shown to induce abnormalities in female reproductive tract development and function.
Researchers are studying how insects recognize infection caused by microorganisms and the pathway of reactions that follow in their immune systems. The goal is to understand how to disrupt disease transmission by blood-feeding insects, such as mosquitoes.
The discovery of a diuretic hormone in malaria mosquitoes could lead to the development of a pesticide for controlling mosquitoes. The hormone, DH31, causes the mosquito to excrete fluid rich in sodium chloride, potentially leading to its death.