Articles tagged with Morphology
Researchers have discovered that rat whiskers act like antennae to amplify tiny stick-slip motions caused by friction, enabling the brain to perceive surface textures. This breakthrough has far-reaching benefits for design of textured surfaces for visually impaired and robotic safety in low light environments.
Scientists from University of Melbourne and University of Queensland have explained echidna's reproductive enigma, detailing testes that never descend or scrotum. The short-beaked echidna has a remarkable penis with four heads, which are functional in alternating erections.
A new study describes four previously undiscovered species of sponges collected from popular dive spots in Southern California, highlighting their unique characteristics and genetic differences. The discovery sheds light on the vast diversity of marine life that remains to be explored and studied.
Researchers at the University of Kansas have described a new species of fanged frog found in the Philippines, which was previously thought to be the same as another species on a neighboring island. The Mindoro Fanged Frog has distinct genetic differences and unique mating calls, setting it apart from its cousin.
Zhan Xiaowei's group has developed a new class of molecular design strategies for fused-ring electron acceptors (FREAs), leading to unprecedented breakthroughs in organic solar cells. The discovery has surpassed fullerenes in performance and opened up new applications in perovskite solar cells, quantum dot solar cells, and more.
Researchers from The George Washington University reclassified the banana spider genus Phoneutria, revealing two previously thought-to-be-similar species: P. boliviensis and P. depilata. Genetic analysis revealed significant differences between the two forms, which differ in their geographic distribution and morphological characteristics.
A new species, Tegula kusairo, has been identified from the edible marine snail genus Tegula, distinct from the common T. xanthostigma. The two species differ in shell color, habitat usage patterns, and geographical distribution.
Researchers developed a computer vision tool to analyze facial images of patients with congenital adrenal hyperplasia (CAH), revealing strong correlations between facial features and the condition. The study's findings could lead to improved phenotyping and treatment of CAH, a life-threatening genetic disorder affecting children.
A new study from Children's Hospital Los Angeles shows that machine learning can accurately identify patients with congenital adrenal hyperplasia (CAH) using subtle facial features. The research uses facial morphology to detect differences in CAH patients and correctly identifies them with greater than 90% accuracy.
Researchers develop a strategy to improve the photovoltaic performance of quasi-bilayer organic solar cells by dispersing donor components into the acceptor-dominant phase, achieving a champion PCE of 15.4%. The incorporation of donors improves charge transport balance and suppresses bimolecular recombination.
Researchers have reconstructed the ancestral relationships of the hillstream loach family tree, detailing unusual pelvic adaptations that enable some members to crawl or walk on land. The study found three dominant variations of pelvic anatomy that explain different degrees of land-walking behavior among the fishes.
A novel species of lizard, Neokotus sanfranciscanus, has been found in the Quiricó Formation in Brazil, dating back to over 130 million years ago. The discovery reveals that squamates were distributed throughout the world earlier than previously thought and had a broader global distribution.
A team of researchers at Harvard University has used MicroCT technology to study the head morphology of Leanchoilia illecebrosa, an ancient arthropod species. The study reveals that the species had a labrum, a flap-like structure overlying the mouth opening in most modern arthropods.
Scientists have discovered four new genera and four new species of giant single-celled xenophyophores in the Pacific Ocean. The newly described species provide insights into the ecology and importance of these organisms in deep-sea ecosystems, which could be impacted by seafloor mining.
Researchers found amyloid β protein fibrillation slowed down in microgravity, resulting in distinct morphologies. The study provides fundamental insights into pathological amyloid formation, highlighting the ISS as an ideal experimental environment.
Giorgio Ascoli is working to enhance the NeuroMorpho.org repository by doubling its reconstructions and adding search functionality. He aims to link morphological, physiological, and molecular properties to create a spiking neural network model.
A team of HKUST researchers has analyzed the genome sequence of the scaly-foot snail, a deep-sea creature with armor-like scales. The study reveals that the snail's unique morphology is largely determined by genes already present in other mollusks, such as squid and pearl oysters.
Researchers at Flinders University have discovered a surprising anatomical connection between the giant cassowary, its closest relative the emu, and the extinct New Zealand moa and small South American tinamou. The study reveals that the syrinx, hyoid, and larynx structures of these birds are more similar than previously thought, provi...
A team of biologists discovered a group of annelid worms that have remained largely unchanged for 275 million years, despite their distinct genetic makeup. The Stygocapitella worms' slow evolution is attributed to their adaptation to stable environments, with changes potentially linked to population crashes or developmental constraints.
Researchers have discovered a new species of goby, Larsonella pumilus, off the coast of Okinawa, revealing insights into its habitat and relationships with other deep-sea fish. The discovery was made at a depth of 214 meters, making it the deepest recorded finding of the species.
Researchers analyzed hundreds of hyolith fossils and discovered soft parts with tentaculate feeding organs, challenging the current phylogenetic placement. The findings suggest that hyoliths likely occupied a more basal position in the Lophophorata, contrary to previous assumptions.
A new software tool called Fungal Feature Tracker can analyze images of filamentous fungi to quantify their spores, branch networks and growth patterns, enabling faster data collection than traditional manual techniques. This advancement could improve our understanding of fungal biology and morphology.
A UCF team led by Veronica Urgiles has discovered and named two new frog species found in high-elevation ecosystems of Ecuador. The team's research highlights the vast diversity of species yet to be discovered in the region, which is critical for conservation efforts.
A new rat snake species, Elaphe urartica, has been identified in eastern Turkey and its range includes Turkey, Azerbaijan, Armenia, Georgia, Iraq, Iran, and Russia. The discovery sheds light on the biogeography of the Blotched Rat Snake and fills an important piece of the Eurasian biota evolutionary puzzle.
A tiny millipede measuring only 8.2 mm was discovered in 99-million-year-old amber in Myanmar, drastically deviating from its contemporary relatives. The species, Burmanopetalum inexpectatum, is the smallest amongst its order and has been classified into a new suborder, showcasing the diversity of ancient arthropods.
Researchers have achieved a remarkable power conversion efficiency of over 16 percent for single-junction organic solar cells. The breakthrough is attributed to the use of a newly designed wide-bandgap polymer P2F-EHp with an appropriate HOMO energy level, which enables optimal morphology and complementary absorption profile.
Researchers at Osaka University found that the angle of male flies' genitalia is crucial for successful reproduction, with males having ideal dorsoventral direction having greater copulation success. The study suggests a cooperative evolution between morphology and behavior in dipterans, with implications for pest control.
A new fossil discovery reveals defining characteristics of hagfish appeared before the Cretaceous period, resolving a longstanding debate on their evolutionary position. The study suggests that hagfish and lampreys form a distinct clade, implying that living jawless vertebrates may not be as primitive as initially thought.
Researchers are conducting a comprehensive study of the walking cavefish to better understand the 'fin-to-limb' transition that enabled the first vertebrates to walk on land. The project aims to identify the genomic, morphological and mechanical qualities that enable fish to walk on land.
The new solar cells, developed using a chlorinated polymer donor, achieved a power conversion efficiency (PCE) of 9.03% and enhanced build-in potential and morphology. This approach is an effective way to boost the PCE of all-polymer solar cells.
Ancient DNA analysis reveals extinct Jamaican monkey Xenothrix, which diverged from Cheracebus monkeys around 11 million years ago. The study suggests that adaptation can shape species morphology in novel environments, supporting primate colonization of the Caribbean islands.
A study using high-resolution MRI found that domesticated rabbits have reduced amygdala size and enlarged medial prefrontal cortex compared to wild rabbits. This led to a diminished flight response and slower reaction time, as the brain's white matter structure was also compromised.
Homo naledi had a small endocranial volume, suggesting a small brain compared to other Homo species. The study found occipital lobe asymmetry and lunate sulcus morphology similar to that seen in modern humans.
A new study reveals that thermal physiological differences allowed Greater Antillean anoles to occupy different microclimates, facilitating species coexistence. The research found that species diverged in thermal tolerance and sprint performance, with warmer environment species having higher maximum temperatures and optimal temperatures.
The American Association of Anatomists has awarded its Young Investigator Awards to Bhart-Anjan Bhullar, Elçin Ünal, Maksim Plikus, and Helen Bateup for their groundbreaking contributions to cell biology, neuroanatomy, and developmental biology. These young scientists have made significant advancements in understanding the structural f...
A Brazilian study found that silky anteaters are comprised of at least seven different species, contrary to the long-held assumption of a single species. Genetic analysis and geometric morphometrics revealed distinct differences in DNA and morphology among the six newly identified species.
The authors propose a scalable and cost-effective preparation protocol for low-dimensional polyion complex nanomaterials with tunable morphologies. The protocol, called PIESA, enables the synthesis of biorelevant nanostructures with controllable shape and charge state.
Researchers from Princeton University and Uppsala University report the origin of a new lineage of Darwin's finches through hybridization between two distinct species. The study reveals that reproductive isolation was established in just two generations, with the new lineage becoming ecologically competitive and unique.
Researchers analyzed over 260 wasp specimens to identify all species and determine their distribution. The study reveals three distinct species within the Polistes gallicus complex and a new species from Morocco, Polistes maroccanus.
DFNS has been used in various applications including photocatalysis, solar cells, energy storage, CO2 capture, biomedical applications and environmental remediation. Its unique fibrous morphology provides enhanced accessibility to active sites and improved light harvesting properties.
Researchers from the University of Zurich have identified a distinct third species of orangutans, Pongo tapanuliensis, through genomic and morphological analysis. The Tapanuli population is believed to be direct descendants of the first Sumatran population and has been isolated for at least 10,000 years.
Researchers analyzed nasal morphologies to infer Neanderthal soft tissue, finding that cold-adapted nasal configurations evolved independently in both species. Computational fluid dynamics simulations showed faster air warming and humidification rates in Neanderthals compared to modern humans.
A female Viking warrior was confirmed as a military leader through genetic analysis of her remains, challenging the long-held assumption that only men held high ranks in battle. The study used ancient DNA to identify the woman's sex and revealed a more complex understanding of Viking society.
A study using artificial intelligence has found that automated embryo assessment systems are more accurate than those of embryologists, with a 76% accuracy rate. The system uses mathematical variables from time-lapse images to classify embryos automatically, reducing human error and improving predictive value.
Scientists from Japan have made the first non-destructive morphological observations of the fleshy brittle star Asteronyx loveni using micro-computed tomography. The study, funded via crowdfunding, provides new insights into the species' skeletal ossicles and soft tissues.
New study suggests that ancient humans entered South America in at least two waves of population dispersals from Asia. The findings, published in Science Advances, rely on a pioneering method to analyze cranial morphology and contemporary genomic data, providing new insights into the complex narrative of human migration.
A new species of testate amoeba, Arcella gandalfi, has been identified in South America with a unique funnel-shaped carapace resembling Gandalf's hat. Its color ranges from light yellow to brown and is considered large for a single-celled organism.
A novel murine model reveals MTU1's importance in regulating mitochondrial protein translation and embryonic development. The study found a conditional knockout mouse line with liver-specific MTU1 deficiency exhibited signs of liver damage, altered metabolism, and increased FGF21 levels.
A study published in Avian Research has confirmed the Hen Harrier and Northern Harrier as two distinct species using genomics and molecular phylogenetics. The classification will aid national conservation efforts, particularly for the European Hen Harrier under threat from grouse hunts.
A study published in PLOS ONE identifies three new cryptic species within the Tegu lizard family, including subtle differences in leg scale morphology and substantial genetic divergence. The discovery may aid conservation efforts for these heavily exploited species.
A newly discovered fossil sea urchin has been found in Texas, pushing the evolution of this type of sea urchin back by 10 million years to the Roadian age. The discovery provides valuable insights into the processes that occur during major evolutionary changes.
Researchers at Oak Ridge National Laboratory have developed a new solvent-based method to manufacture ultrathin films used in organic bulk heterojunction solar cells. This method eliminates the need for thermal annealing, resulting in improved film morphology and increased photovoltaic performance.
The discovery of Tetrapodophis amplectus, a four-legged snake fossil from Brazil's Crato Formation, supports the idea that snakes evolved from burrowing ancestors. The species' unique features, including short snout and flexible jaw, suggest it was adapted for grasping prey or clasp during mating.
Stan Yavno's research on non-native pumpkinseed sunfish found high levels of morphological plasticity, facilitating their ecological adaptations in new areas. This finding is significant as it suggests that invasive species can outcompete native populations through phenotypic plasticity.
Scientists have identified two new iguanid lizard species from the Laja Lagoon in Chile, expanding our knowledge of the region's unique reptilian diversity. The study describes two new species within the Liolaemus elongatus-kriegi complex, highlighting the importance of continued research into Patagonian lizards.
A 2-year-old Neanderthal child's skeleton has yielded new insights into the species' anatomy, including a complete stapes ossicle. This finding highlights significant morphological differences between Neanderthals and humans, with the exact relation to hearing in Neanderthals still unknown.
The oldest known crab larva was recently discovered in a fossil, dating back 150 million years. The specimen's morphology is remarkably modern, resembling that of present-day crabs. This finding provides unique insights into the evolution of brachyurans and suggests early specialization of larvae within the crab lineage.
A new study on echinoids shows that evolutionary rates were lowest at the group's onset and increased over time through bursts associated with changes in feeding strategies. This challenges traditional views of evolution, suggesting a more complex history for many clades.
Researchers have discovered two new species of Palythoa anemones living in cracks and caves of coral reefs, lacking zooxanthellae. The species exhibit unique morphological features adapted to their dark habitats, providing insights into parallel evolution.
A study of rock sponges found that morphology-based taxonomies do not accurately reflect their genealogical relationships. Molecular genetic investigation combined with fossil analysis reveals that traditional classifications are often incorrect.