Articles tagged with Arachnids
UCF researcher Mollie Jewett aims to 'starve' Borrelia burgdorferi of nutrients to prevent Lyme disease spread. Her team is focused on targeting the bacteria's ability to consume riboflavin, a key nutrient for its survival.
Researchers combined iNaturalist photos with scientific observations to study harvestman care for 85 species, doubling the known data on parental care. The study reveals two evolutionary paths for paternal care and sheds light on the evolution of care in the Gonyleptoidea group.
A new study reveals that brief warm temperatures disrupt the internal bacterial ecosystem of dwarf spiders, leading to a sudden comeback of male offspring. The research found that thermal stress triggers a transgenerational shift in microbial dynamics, with a rival bacterium blocking the feminizing bacteria and allowing males to thrive.
Heavy rainfall damages spider webs, influencing which species can survive in the environment. Researchers found that sheet-shaped cobwebs are more resistant to rain due to their high silk content.
Scientists have discovered a 518-million-year-old fossil named Urokodia, which shows the earliest evidence of spiders' fangs. The fossils revealed two pincer-like limbs emerging behind the eyes, marking the beginning of chelicerae. This discovery sheds light on the origin of spider bites and book gills in the Chelicerate family.
A newly discovered Australian ballista spider uses a silk-powered snare to target and capture the highly aggressive green tree ant Oecophylla smaragdina, launching its prey into the air with incredible power and speed. The snare is triggered by the prey's reaction and stores elastic energy in the silk to release it rapidly.
Researchers developed SpiderCam, a highly energy-efficient 3D camera inspired by jumping spiders. It captures two images with different focus settings and analyzes the differences in sharpness to produce real-time 3D maps while consuming less than a watt of power.
Researchers at the Smithsonian National Museum of Natural History analyzed 18 scorpion species and found striking patterns in metal concentration and distribution among their pincers and stingers. The study reveals that zinc plays a role beyond hardness, possibly enhancing durability, and provides insight into how organisms adapt to pr...
Researchers discovered a new web-weaver spider species in Colombia, Pikelinia floydmuraria, which is named after Pink Floyd. The species is able to capture and consume ants up to six times its own body size, playing a significant role in managing household pests.
Researchers observed tarantulas using spatial orientation to improve prey capture and retreat location, indicating possible learning and memory use. The study suggests that tarantulas' nervous systems support flexible behavior and may rely on internal body signals combined with environmental cues.
Researchers mapped participants' eye movements to identify patterns when viewing spider images, revealing attention is drawn to spider-specific features like webs and eggs. The study aims to better understand the mechanisms underlying arachnophobia, paving the way for more effective mental health treatments.
A study by Professor Bryan Fry and Sam Campbell from the University of Queensland found that scorpion venom activates major clotting factors in human blood, particularly Factors VII and X. The research also identified small-molecule metalloprotease inhibitors that can neutralize the procoagulant effect.
A recent study by UMass Amherst ecologists highlights massive gaps in data on insects and arachnids, which are crucial for ecosystems. The research found that almost 90% of species have no conservation status, with many states lacking protection for even a single species.
A team from Monash University Biomedicine Discovery Institute has identified a tick-derived evasin that can bind to two major classes of chemokines, representing a novel finding in the field. This discovery opens up new opportunities to develop therapies that target chemokines driving inflammatory diseases such as RA and MS.
A new USF study challenges long-standing assumptions about the brown recluse spider, finding it's far less common in Florida and exhibits a lower propensity to bite. The research also reveals that bites typically produce shallow wounds with minimal tissue damage.
A new study has found that living walls can significantly enhance urban biodiversity by attracting pollinators and other wildlife. The research revealed that soil-based living walls with plants in soil attracted more wildlife than those with artificial substrates, and specific plant species like ivy and honeysuckle were most effective.
A new study reveals that farmers in the Northeast are facing a growing threat of tick-borne diseases, which can be devastating to their livelihoods. The research found that farmers often experience multiple tick bites per month, with some contracting serious illnesses like Lyme carditis.
Researchers describe a new species of spider-parasitic mite found on juvenile spiders in the Butantan Institute collection in Rio de Janeiro. The larvae were collected and examined using microscopy techniques, resulting in the first description of this family in Brazil.
Researchers discovered that Clubiona spiders have unique antifreeze proteins that bind to ice crystals, preventing their growth at sub-zero temperatures. This adaptation is crucial for perennial agriculture as it could lead to reduced reliance on insecticides and combatting resistance.
A 47-year-old man from New Jersey died after consuming beef due to a tick-borne meat allergy caused by the Lone Star tick's alpha-gal sugar. Researchers identified the allergy and its link to fatal anaphylaxis, urging physicians to investigate severe abdominal pain after eating red meat in areas with high Lone Star tick populations.
Scientists at UC Davis have discovered a new species of trapdoor spider, Aptostichus ramirezae, in California's coastal sand dunes. The study reveals that what was thought to be one species is actually two, highlighting the need for conservation efforts to protect habitats shrinking due to climate change and human development.
Researchers found that stabilimenta, 'decorations' on spider webs, can boost a spider's ability to pinpoint the location of prey caught in its web. Numerical simulations suggest that stabilimenta enhance vibration propagation at specific angles, increasing potential detection points.
A tiny fossil of a sea creature from over half a billion years ago sheds light on the evolution of arthropods, revealing a brain similar to that of living crustaceans. The discovery suggests that the split between the two largest groups of arthropods was more nuanced and complicated than previously thought.
A new analysis of a 500 million-year-old fossil suggests that arachnids, including spiders and scorpions, evolved in the ocean before adapting to land. The discovery was made by studying the brain and nervous system of an ancient marine arthropod called Mollisonia symmetrica.
Four new species of dragon pseudoscorpions have been discovered in caves of South Korea, characterized by their unique dragon-like jaws. These blind creatures were identified through integrative taxonomy, providing insight into the biodiversity of cave-dwelling animals.
Researchers analyze gene expression in Retinal Determination Network to identify developmental differences between Tegenaria pagana and other spider species. The study sheds light on evolutionary adaptations in cave environments, including the genetic factors influencing eye reduction.
A new study reveals that the transition from water to land occurred multiple times in arachnids, with whole-genome duplication playing a key role in shaping traits like silk production and venom synthesis. This finding provides a foundation for future genetic and evolutionary studies.
Researchers found that slingshot spiders can listen for approaching insects before releasing their web to catapult forward and capture prey. The spiders use sound-sensitive hairs on their legs to detect the vibrations from the insects' wings, allowing them to deploy their webs in mid-air.
Researchers recommend public surveillance via online observation platforms like iNaturalist and Observation.org to detect invasive species early. By leveraging the growing number of smartphone users, scientists aim to widen the surveillance net and augment existing biosecurity frameworks.
Researchers from UC Riverside have identified the oldest known ecdysozoan, Uncus dzaugisi, dating back to the Precambrian period. This discovery fills a significant gap in understanding the origins of this diverse animal group, which includes nematodes, arthropods, and scalidophora.
A previously unstudied ancient gene called 'waist-less' is required for the development of a spider's narrow waist, according to researchers. The discovery sheds light on the formation of the distinctive body plan in spiders and highlights the function of new genes in ancient groups of animals.
Researchers investigated the interaction and genetic introgression between two closely related spider mite species in Japan's mountains. The study found extensive overlapping distribution, hybrids, and genetic introgression, shedding light on speciation in haplodiploid organisms.
A team of UConn researchers, without lab experience, published the first chromosome-level genome of a desert hairy scorpion. The study sheds light on arachnid evolution and advances comparative genomics research.
Scientists discovered a bizarre arachnid with up-armored legs in the Mazon Creek locality in Illinois, dating back to the Carboniferous period. The fossil, named Douglassarachne acanthopoda, has a unique body plan that defies categorization into known arachnid orders.
A recent study at The Hebrew University of Jerusalem documented a groundbreaking observation of phoresy involving a myrmecophile pseudoscorpion on a myrmecophile scorpion. The study reveals the first recorded instance of this symbiotic relationship, where the pseudoscorpion attaches to the scorpion for dispersal into new environments.
Two new tarantula species have been discovered in Ecuador's wilderness, but they are already threatened due to habitat destruction and human activities. The implementation of protected areas is essential to conserve these endangered species and prevent further extinction.
Asian longhorned ticks, originating from East Asia, have been detected in Ohio, with over 1 million estimated in a single pasture. Researchers stress the need for early detection and targeted control measures to manage these persistent pests.
A new species of electric blue tarantula was found in a Thai mangrove forest, showcasing its remarkable adaptability and iridescent effect. The discovery highlights the importance of taxonomy and raises concerns about the destruction of natural habitats due to deforestation.
Researchers found that shoreline spiders can move mercury pollution up the food chain to land animals like birds and bats. The study suggests these spiders can serve as a potential link between aquatic and terrestrial wildlife, informing management decisions.
Researchers created a comprehensive molecular tree of camel spiders, revealing two main groups in the Americas and their relationships. The study also found that camel spiders began evolving around 250-300 million years ago during the Permian period.
A new species of the Persian Gold Tarantula has been discovered in northwestern Iran, belonging to the genus Chaetopelma. The newly described species, Chaetopelma persianum, is an obligate burrower and inhabits high elevations in well-vegetated mountainous regions of the northern Zagros Mountains.
A novel blind daddy long-legs spider was found in Western Australia's Pilbara region, marking the first cave-adapted species reported from the continent. Another extraordinary species was also described from Réunion island, with its closest relatives found in eastern Africa.
A groundbreaking expedition in Colombia's Chocó Biogeographic Region has revealed four new tarantula species, including the exceptional trapdoor spider Ummidia solana. The discovery expands their geographical distribution and offers valuable insights into their morphological characteristics, taxonomy, and biogeography.
Male spider mites undress premature females by stripping off their skin before they molt, increasing the male's reproductive chances and reducing competition. This behavior is an example of sexual selection driving complex behaviors in arachnids.
New Zealand research reveals that males who lost at least one leg during development were more likely to grow up to be the smaller gamma males. This is because losing a leg impeded their hunting ability and may have led them to prioritize other traits like sperm count over investing in large fighting weapons.
Scientists have studied the internal parts of spider silk using an optical microscope without cutting it open. The analysis revealed that the fiber consists of at least two outer layers of lipids and numerous fibrils running in a straight, tightly packed arrangement. Understanding how to create such strong fibers is crucial for produci...
A species of jumping spider employs two lines of defense to avoid being eaten: camouflaging with plants and walking like an ant. The spiders' brilliant coloration also plays a role in their ability to blend in with their environment.
Researchers found that wolf spider species in Nebraska exhibited similar diets, with many eating the same types of prey. This suggests a complex food web where predators are not just competing for resources, but also engaging in cannibalism to regulate their populations and stabilize the ecosystem.
Researchers found that orb weaver spiders' glue proteins differ in proportion between dry and humid environments, enabling rapid adaptation to local conditions. The study sheds light on the evolution of biological glues and their potential applications in industry and medicine.
New research suggests brown widow spiders actively seek and kill nearby black widows, displacing them in parts of the southern US. Brown widow females are also larger and more fertile than black widows, with a higher reproductive success rate.
A new spider genus, Abba transversa, has been discovered in Australia, featuring distinctive dark spots and thick macrosetae on the legs. The genus was named after the Swedish pop group ABBA and is the result of a comprehensive study of orb-weaving spiders.
Researchers identified 92 proteins in the spider's venom, including cysteine-rich peptides with potential therapeutic applications. The toxins were found to be effective in paralyzing crickets and may become active ingredients for pharmaceuticals and biological insecticides.
A six-year study involving 146 patients found that antivenom reduced the risk of skin necrosis in those bitten by brown recluse spiders. Administration of the substance was safe with minimal adverse effects, particularly when given within 48 hours of the incident.
A study reveals female false widow spiders disseminate pheromones through their webs, adjusting the pH level of silk to lure males and deposit courtship-inducing pheromone components. This sophisticated method involves slowly breaking down pheromone components to attract males.
Scientists at Tianjin University have discovered a way to make silkworm silk 70% stronger than spider silk by removing its sticky outer layer and manually spinning it. This breakthrough could lead to the production of profitable high-performance artificial silks, revolutionizing industries such as biomedicine and tissue regeneration.
A study by MedUni Vienna's Department of Dermatology reveals that tick saliva inhibits the skin's defense function, making it easier for pathogens to multiply. Climate change increases the danger from ticks, which now pose a threat in higher-altitude regions of Austria and well into late autumn.
A recent study in Peru revealed a 50% decline in arthropod biomass following short periods of drought and increased precipitation. Tropical insects are sensitive to both extreme weather events, with rainfall patterns being a key factor in their decline.
Researchers explored the global spread of misinformation on spiders, finding that sensationalism and misinformation decrease when experts are consulted. Local events can quickly become international news, emphasizing the need for improved information quality at local nodes to reverberate globally.
Two new-to-science scorpions, Paruroctonus soda and P. conclusus, are described by Bay Area high school students Harper Forbes and Prakrit Jain in collaboration with the California Academy of Sciences. The species are alkali sink specialists found only in playas from Central and Southern California.
Researchers at Binghamton University discovered that orb-weaving spiders use their webs as extended auditory arrays to capture sounds, allowing them to detect prey and predators. The study found that the spiders can respond to sound levels as low as 68 decibels and localize sound sources with 100% accuracy.