Articles tagged with Insects
Researchers found mosquitoes make stealthy takeoffs with barely a push-off, instead relying on strong wing beats for lift. They can carry blood meals without issue, using sweeping wing movements to generate extra lift.
A long-term study reveals a significant decrease in the numbers of the 2-spot ladybird on lime trees due to the invasion of harlequin ladybirds. The invasive species accounts for up to 70% of all recorded ladybirds and may drive population changes through predation.
Researchers successfully built a gene drive to reduce female fertility in malaria-spreading mosquitoes, but mutations soon arose that blocked the spread of new genes. This study documents the emergence of resistance and will help improve future gene drives.
Researchers used genetic sequencing to confirm that Ball's Pyramid stick insects are the same species as Lord Howe Island's, making them officially resurrected. The discovery provides hope for reintroducing the insect into its native home on Lord Howe Island.
Researchers have analyzed DNA of living and dead Lord Howe Island stick insects, confirming their species identity and increasing likelihood of successful reintroduction. The study highlights the importance of museum collections in taxonomic validation.
Researchers from Finland's Universities of Turku and Helsinki have identified dozens of prey species consumed by adult dragonflies using DNA analysis of faecal samples. The study provides unprecedented specificity on the position of dragonflies in natural food webs.
Researchers at Lund University have discovered an optimal speed for certain insects when they fly, consuming the least amount of energy. Flying slowly or fast requires the most effort, with a moderate speed of 2-3 meters per second being the most energy-efficient.
New research suggests that residual human odour on soiled clothes acts as an elicitor of host-seeking behaviour in bed bugs. This could lead to the dispersal of bed bugs through dirty laundry, particularly when left exposed in sleeping areas.
Researchers discovered mushroom bodies in mantis shrimp brains, a structure previously only found in insects. The findings suggest that these complex structures may have evolved early in the evolution of all arthropods.
According to a new study by CDC researchers, three-quarters of US counties are suitable for Aedes aegypti or Aedes albopictus mosquitoes, which transmit Zika, dengue, chikungunya, and yellow fever viruses. The mosquito species thrive in regions with mild winters and high humidity, with the eastern and southern US being most at risk.
Researchers estimate 2 billion species, with bacteria dominating the 'Pie of Life'. This new estimate incorporates DNA sequence data and parasite-host associations to arrive at a higher number than previous estimates.
Kasey Fowler-Finn's research explores how temperature variation affects treehoppers' ability to recognize potential mates and reproduce. The study aims to understand the potential impact on ecosystems if some species drop out due to temperature changes.
A tropical insect, Synthesiomyia nudiseta, has been detected in corpses in North West Italy, according to a study by Dr Stefano Vanin. The research suggests that climate change and globalization have enabled the fly's migration from China.
Researchers at Boyce Thompson Institute have received a four-year DARPA award to develop insect-vectored viruses for disease-resistant maize. The project, titled Viruses and Insects as Plant Enhancement Resources (VIPER), aims to engineer genes into maize that can help combat disease, drought, and other yield-reducing stresses.
Scientists discover dodder parasite transmits insect feeding-induced signals among different hosts, triggering defense reactions in neighboring plants. The parasitic plant's vascular system connects with its hosts, enabling the transfer of warning signals.
Researchers at UCR discovered that infected insects emit an odor called prenol that repels nematodes looking for a new host. This finding supports the use of nematodes as a tool for controlling crop pests.
Researchers studied the aerodynamics of bats performing manoeuvres during flight, revealing their high level of control over wings. The study used flow visualisation techniques to analyse bat wing movement through the air, gaining insights into how these animals catch prey on the wing.
The USDA is investing $7.6 million in research to help manage pests and beneficial species that affect agricultural crops. The funding will support projects that promote beneficial organisms associated with pests and better understand the fundamental mechanisms of interactions between plants, pests, or beneficial species.
A study by the Technical University of Munich found that optimally distributed management within a region can lead to higher yields without insect species loss. This requires planning at the landscape level and considering multiple forms of management.
The spruce budworm's massive defoliation can lead to devastating consequences for the forest industry, causing an estimated $3 billion to $4 billion in losses over the next 30 years in New Brunswick alone. Defoliation increases the risk of natural fires igniting eight to 10 years after a budworm outbreak.
Adult female praying mantises in the newly identified genus Hondurantemna chespiritoi have evolved to mimic a leaf by changing color to green and developing larger forewings. This unique camouflage strategy is distinct from that of males, which retain their brown coloration and stick-like body configuration.
Researchers have found a crystallized form of DDT that is more effective against insects than the existing one, potentially leading to the development of a safer pesticide. The new DDT crystal form can be administered in smaller amounts while reducing environmental impact.
Researchers have found that red light has no significant effect on the activity of slow-flying, light-shy bats. In contrast, white and green light substantially reduce their activity levels, making red light a potential solution to mitigate habitat loss.
A study published in PLOS ONE found that migratory Nathusius and Soprano bats are attracted to artificial green light, which could disrupt their flight paths. The researchers exposed bats to brief periods of green light at a wavelength of 520nm, recording increased calling activity near the light source.
A recent study deployed green clay caterpillars across six continents to reveal that insects are responsible for the majority of predation observed. The findings suggest that predation pressure is stronger in the tropics due to the need for insects to innovate defense mechanisms against predators.
A study published in Journal of Cleaner Production found that cricket farming can be a more environmentally sustainable way to produce animal source foods. The research compared cricket production to broiler chicken production and identified areas for further improvement, such as exploring alternative feed sources.
Replacing beef with insect-based foods could reduce greenhouse gas emissions and free up vast areas of land, according to a new study. The researchers found that eating more insects or imitation meat could halve global consumption of animal products, freeing up 1680 million hectares of land.
A team of researchers has discovered that parasitic fig wasps use odour sensors to find their host larvae within the fruit. The study, published in Journal of Experimental Biology, found that the wasp's ovipositor can detect carbon dioxide and other gases emitted by developing larvae.
Citrus greening, caused by Candidatus Liberibacter asiaticus, starves trees of nutrients and damages roots. Researchers are developing novel therapies to kill insects or block bacteria transmission. A $6 million grant supports the project, which aims to establish a research pipeline and deploy treatments in greenhouses and groves.
Researchers found that traps baited with pheromone attract only a small fraction of overwintering stink bugs, which don't respond until daylight hours increase. Prevention is key to stopping brown marmorated stink bug invasions, and the use of traps during this time may not be effective.
Researchers modelled midge swarm cohesion and found that the faster individual midges fly, the stronger gravitational-like force they experience. This speed-dependent force increases with distance from the centre of the swarm.
Scientists at UC Riverside's Akbari lab have successfully created a strain of red-eyed mutant wasps using CRISPR gene-slicing technology. The goal is to better understand the biology of wasps and other insects to control pests that destroy crops or spread diseases like malaria.
Tel Aviv University researchers studied whiteflies' takeoff method, finding they use wingtip air resistance to stabilize before spreading wings. This technique may be applied to miniaturized drones for improved stability during takeoff.
Research by Indiana University geographers reveals a 15% increase in annual water yield resulting from forest damage caused by the hemlock woolly adelgid. The study highlights concerns about water quality as rainfall runs off more quickly, carrying higher concentrations of nutrients.
Researchers tested house fly survival on erythritol and found flies died no faster than if fed water alone, suggesting starvation, not toxicity, is the cause of death.
Researchers have discovered the oldest specimens of insects from the bed bug genus in Oregon, dating back to around 5,100 and 11,000 years ago. The remains were identified as relatives of the common bed bug, but were not the bed bugs found in hotel rooms.
A North Carolina State University study reveals a significant shortfall in refuge cropland planting, potentially increasing Bt crop pest resistance. Researchers identified factors influencing growers' willingness to plant refuge crops, including financial incentives and high-yield non-BT seed.
A new Oxford University collaboration analyzed mosquito wing movements to understand flight dynamics. The study revealed two novel aerodynamic mechanisms, including trailing-edge vortices and rotational drag, that enable high-frequency flight.
Researchers studied a rare cricket family, grigs, to understand the evolution of sound generation in orthopterans. They found that grigs' wings represented an early transitional stage between fossilized ancestors and modern bush-crickets.
Researchers found that reducing the number of species in a grassland ecosystem can cause remaining species to flower earlier, similar to the effects of climate change. The study suggests that future changes in biological timing could be much bigger than expected, with potential cascading effects on ecosystem dynamics.
The robber fly has exceptional vision thanks to a unique arrangement of lenses, enabling it to spot prey over half a metre away in under half a second. Its 'lock-on' strategy allows it to adapt mid-air and catch its prey with precision, making it a potential model for drone design.
A new species of fungus gnat has been discovered in Finland, with the scientific name Sciophila holopaineni honoring Tuomas Holopainen. The insect thrives in shadowy environments and is part of a larger group of insects that can indicate the state of natural biodiversity.
Researchers at Yale University and Vanderbilt University have discovered a common bacterium that can be used to sterilize male insects, potentially controlling disease-bearing mosquitoes and agricultural pests. The discovery of two genes encoded by Wolbachia bacteria can completely sterilize male fruit flies.
Researchers found that moths in the subfamily Arctiinae mimic wasps to evade birds and other predators. However, their nearly perfect resemblance is not due to learning from experience, as previously thought, but rather to deceive actual wasps into thinking they are part of the same species, thereby avoiding attack.
Researchers found that man-made disruptions in natural flow patterns contribute to reductions in both the abundance and diversity of fish and insects. The study provides a scientific basis for establishing ecological flows in North Carolina's major river basins.
Researchers sequenced over 1,000 stick insect genomes to study early phases of speciation, finding that genetic differences across the genome are crucial for distinguishing between species. The study suggests that rapid reversals of speciation can occur when distinct species cross paths again.
Researchers found that DEET and PMD-based sprays were the most effective at repelling Aedes aegypti mosquitoes, while wearable devices showed little to no effect. The study tested five wearable devices and five spray-on repellents, concluding that consumers should seek out the most effective products to avoid mosquito bites.
Researchers found that male flies are attracted to specific flash frequencies from female wings, with a preference for young females' slower wing beats of 178Hz. The study suggests that wing movement contributes to mate selection and may be a common phenomenon in other insects.
Researchers found that hemocyanin, an oxygen-transporting protein, is highly expressed in Asian citrus psyllids infected with the bacterium causing citrus greening. The protein may signal an immune response to infection and could be harnessed to help control disease spread.
A new study found that distantly related carnivorous plants, including pitcher plants, share similar genetic changes associated with their ability to digest insects. The research suggests that the evolutionary routes to carnivory may be limited and that these plants have co-opted ancient proteins to create digestive enzymes.
The release of genetically modified insects for pest control could lead to contamination in organic crops, harming farmers and eroding consumer confidence. International trade could be disrupted if detected contaminants are met with import bans.
Researchers discovered that fruit fly steering muscles are divided into two types, with tonic muscles always in use for fine-tuned adjustments and phasic muscles used for rapid movements. This unique organization enables efficient flight control.
A recent study published in the Journal of Agricultural and Food Chemistry found that stink bugs can contaminate wine with stress compounds, affecting its quality. The researchers discovered that pressing is a key step in releasing these compounds, and that limiting stink bugs to three per grape cluster could improve wine quality.
University of California Riverside researchers identify amino acid taste receptor Ir76b playing key role in insect identification of umami taste. The discovery sheds light on insect food choice and potential targets for controlling insect populations.
The Venus flytrap captures insects to extract nutrients and energy. Researchers found that the plant produces additional energy by oxidizing amino acids from its prey.
Researchers discovered that a specific bacterial species in moth gut microbes produces an antimicrobial peptide called mundticin KS, which defends its host against pathogens and promotes symbiosis. This finding has implications for agriculture and health, potentially leading to new biocontrol strategies and novel antibiotics.
A Tulane University study reveals that using cockroach bait alone can significantly reduce asthma symptom days in children, with 47 fewer days reported over the course of a year. The intervention also led to lower numbers of unscheduled clinic visits and emergency room trips.
Researchers found that male fruit flies consistently choose the female mate that would produce the most offspring, even when impaired senses were removed. The cognitive process of making rational choices is a unique human trait, but this study provides evidence that fruit flies can also make such decisions.
Scientists have measured mass insect migrations in UK skies, with up to 3.5 trillion insects migrating annually over southern England. The movements are comparable to significant oceanic migrations and provide essential ecological services, including pollination and predation of crop pests.
A decade-long study in southern UK reveals an annual mean of 3.37 trillion insects migrating above the region, comprising 3200 tons of biomass. The majority of migration occurs during daytime, with intensity greatest on warm days.