Articles tagged with Vertebrates
Researchers have identified a network of approximately 20 specialist decomposing microbes that consistently appear on all 36 human cadavers decomposed under various conditions. This discovery has significant implications for the future of forensic science, enabling investigators to more accurately determine a body's time of death.
Wildlife filmmaker Carlos Gauna and UC Riverside student Phillip Sternes observed a 5-foot-long pure-white shark pup shedding its embryonic layer. The location off central California's coast is proposed as a potential great white breeding ground, which could help protect endangered species.
A research team studied developing lamprey embryos to clarify the evolutionary origin of the vertebrate skull, finding that the head mesoderm diverged early in evolution. The study challenged long-standing debates on the development and origin of somites, providing new insights into the age-old question.
Researchers at Kiel University discovered that porpoises and sand eels create shallow pits in the North Sea seafloor when hunting for buried sand eels. The findings have significant global implications, suggesting that scouring of sediments by vertebrates could modulate the seafloor on a global scale.
A new study reveals that humans have driven the extinction of 1,430 bird species, with many becoming extinct before written records. The research suggests that major human-driven extinctions occurred in the 14th century and ninth century BC, with ongoing threats including climate change and invasive species.
Researchers discovered that reindeer's vision evolved to spot Cladonia rangiferina, a type of lichen, during winter. This adaptation allows them to conserve energy by finding food from a distance, making it easier to survive in cold environments. The study provides new insights into the extraordinary visual system of reindeer.
A study found that migratory bats are sensitive to the angle of magnetic inclination and use it for navigation. The soprano pipistrelle bat species calibrated its internal compass at sunset, taking into account both the horizontal component and inclination of the Earth's magnetic field.
A new analysis of European Red List species reveals that 19% are at risk of extinction, including a large proportion of invertebrates. Agricultural land-use change poses a significant threat to these species, highlighting the need for conservation efforts to counter biodiversity loss.
Researchers studied over 100 noctilionoid bat species, finding that different dietary types drove modifications in tooth number, size, shape, and position. For instance, fruit-eating bats have shorter jaws with reduced middle premolars, while nectar-feeders have longer jaws with room for more teeth.
Researchers found 13 mummified leaf-eared mouse cadavers atop 4-mile-high volcanoes, with DNA analysis revealing a distinct population from lower-altitude mice. The discovery suggests the rodents ascended without human assistance and have adapted to extreme conditions.
A new species of spiny mouse, Neacomys marci, has been identified in northwestern Ecuador. The discovery sheds light on the previously underestimated diversity of the Spiny Mouse genus.
A 10-year study found that golden-crowned sparrows resettled an average of just 90 feet away from the center of their previous year's range when returning to California after winter migration. The study suggests that social bonds and familiar faces help anchor the birds to specific spaces, even when resources are scarce.
A recent study led by Dr. Itamar Harel reveals that manipulating AMP biosynthesis can extend lifespan and promote metabolic health in vertebrates. The research used the turquoise killifish as a model organism and found remarkable effects on energy metabolism, including a fasting-like profile and enhanced resistance to high-fat diets.
The Ngoc Linh Crocodile Newt is a newly discovered species of crocodile newt found in the Central Highlands of Vietnam. The species is considered Endangered due to its small population size and limited geographic range.
Researchers identified boundary vector cells in goldfish central telencephalon that encode spatial information for the first time in a vertebrate. These cells enable unique positioning and represent a significant discovery in understanding fish navigation systems.
A recent study found that temperature and extreme drought drive movement among herds of Plains bison, posing challenges for managing the iconic species. The team analyzed GPS-backed evidence from 33 Plains bison across two sites in Oklahoma, revealing a strong link between air temperature and bison movement.
Researchers at University of California - San Diego found that vertebrates acquired a special protein from bacteria more than 500 million years ago. This discovery reveals a new piece of genetic material introduced from foreign bacterial genes, leading to unique functionality in vertebrate eyes.
A new research approach suggests integrating biodiversity auditing into conservation plans to effectively support a wider range of important species. This method has been successfully tested in the UK's East Anglia region and could benefit biodiversity nationally, including the European Union's 2030 Biodiversity Strategy.
A study from the University of East Anglia found that environmental impact assessments often fail to account for species movement between sites, leading to underestimated impacts on wildlife. The research highlights a planned airport development in Portugal that could affect over 10 times the number of Black-tailed Godwits estimated by...
A study of bird poop reveals a unique relationship between birds and their microbiomes, which differ from those found in mammals. The researchers found that the types of bacteria present in the birds' gut microbiomes change over short time periods, rather than being tied to specific host species.
Researchers found that hummingbirds can enter into deep or shallow torpor, and their ability to do so is tied to their evolutionary conquest of mountain habitats. Torpor duration varies depending on ambient temperature and physical condition.
A new study reveals that northern and southern resident orcas differ in their hunting behaviors, with males catching more salmon per hour than females. Southern resident males outperform females by 152%, highlighting a distinct pattern of foraging that may contribute to the population decline.
Research reveals island-dwelling mammal species face higher extinction risks, with those experiencing extreme size changes being particularly endangered. Human arrival on islands multiplies the probability of extinction by 16, contributing to a 'protracted extinction event' spanning over 100,000 years.
A team of scientists found a 16-year-old European hedgehog in Denmark, exceeding the previous record by seven years. The discovery contradicts previous studies suggesting that inbreeding reduces lifespan. The study's results provide valuable insights into the basic life history of hedgehogs and may improve conservation efforts.
Researchers found that nectar-feeding bats rely on extra-long whiskers to navigate flowers while feeding, providing enhanced spatial information. Clipping whiskers reduced agility but didn't impact feeding ability.
Researchers have discovered that ancient crocodilian hemoglobin required 21 interconnected mutations to develop its hyper-efficient oxygen-binding properties. This complexity, not found in other vertebrates, enabled crocodilians to exploit their onboard oxygen stores for extended periods underwater.
A high-throughput analysis of 26 medically important snakes in sub-Saharan Africa reveals the benefits of an integrated approach to understanding their venom composition and function. The study provides a solid foundation for further research on snake biology and antivenom development.
A Collaborative Research Centre investigates animal navigation using the Earth's magnetic field. The study focuses on vertebrates, including birds and fish, aiming to protect endangered migratory species.
The research reveals PAPP-A's heart-shaped structure and its interaction with STC2, a key regulator of IGF conversion. The study suggests that complex formation between PAPP-A and STC2 is highly regulated, influencing height by up to 2.1 cm.
Researchers have discovered that erect-crested penguins, an endangered species, lay a smaller first egg and reject it in favor of a larger second egg. This reproductive strategy allows the bird to better feed its chicks and increases the chances of survival for both eggs.
Researchers used a random forest model to analyze hyena whoops and found that individual signatures are distinct enough for identification. Repeating calls can improve identification accuracy, peaking at seven repetitions.
Scientists discover Opisthiamimus gregori, a new extinct species of lizard-like reptile that lived in Jurassic North America alongside dinosaurs. The discovery sheds light on the evolution of rhynchocephalians, an order that diverged from lizards over 230 million years ago.
Researchers from the University of Tsukuba discovered that changes in the extracellular environment during metamorphosis and body growth enable newt muscle fibers to dedifferentiate and contribute to limb regeneration. This process is crucial for newts' ability to regenerate limbs throughout their life cycle.
A new study found evidence that multituberculates, an extinct group of mammals, likely reproduced in a placental-like manner. This discovery questions the long-held idea that marsupials were less advanced than placentals in terms of reproductive strategy.
A new study describes Qikiqtania wakei, a close relative of Tiktaalik roseae with features more suited for swimming and life in the water. The fossil includes partial jaws, neck, and scales, as well as a complete pectoral fin with a smooth and curved upper arm.
Researchers at the University of Illinois Urbana-Champaign created a high-resolution map of the bearded dragon's brain, providing a standardized protocol for future clinical cases. The study identified nine anatomic structures in the brain and developed a safe and efficient MRI and sedation protocol.
Researchers from Species360 and the University of Southern Denmark found that most turtle and tortoise species show extremely slow senescence, while 80% have slower senescence than modern humans. This challenges evolutionary theories of aging, suggesting these animals may reduce their rate of aging in response to improved conditions.
Researchers evaluated the toxicological effects of BaP on bay scallops, finding increased immune response-related parameters with time at higher concentrations. The study suggests that BaP dampens the immune response of scallops and decreases their capacity to respond to oxidative stress.
Researchers used high-resolution micro-CT scans to reveal key features in Palaeospondylus fossils, placing it as an early ancestor of tetrapods. The study resolves long-standing evolutionary mysteries, including the lack of teeth and dermal bones in the fossil record.
A study by researchers at the University of Innsbruck discovered that the Cranial Sensory Ganglia in vertebrates shares a common genetic origin with Bipolar Tail Neurons found in tunicates. This finding suggests that Hmx, a gene conserved across evolution, played a crucial role in the formation of highly specialized sensory organs.
Two new species of Amazonian fish have been discovered and described by Smithsonian researcher Murilo Pastana, one with vibrant red-orange fins and another that is technically a miniature fish. The species are at risk of extinction due to deforestation in the region where they inhabit.
A Dartmouth study using advanced recording technology reveals that females prefer lower frequency songs with low variance, while males time their songs to follow neighbors. The research shows how chorus composition and individual songs impact mating in wood frogs.
New study reveals a 54% to 76% decline in vertebrate specimen additions to natural history collections since 1965. The declines threaten to compromise the value of existing collections and limit future discovery, posing an unfillable gap for future generations.
Research finds that bat box design and landscape placement significantly impact the energetic balance of endangered Indiana bats. A study by University of Illinois researchers tested five bat box designs and four landscape placements to determine their effects on bat metabolism, development, and survival.
Scientists have discovered six new species of frog in Mexico's forests, with one being the country's smallest, the 13mm-long Craugastor candelariensis. The newly discovered species are known as 'direct-developing' frogs, emerging from eggs as perfect miniature frogs.
A study has discovered that humans are disrupting a fundamental pattern in ecosystems, which dates back at least 66 million years. The U-shaped relationship between diet and size in modern land mammals has been found to span across multiple vertebrate groups, including birds, reptiles, and fish.
Researchers used X-ray computed microtomography to produce stunning 3D reconstructions of the proteus' head, revealing extensive changes in sensory organs and physical appearance. The study provides detailed information about evolutionary-designed adaptations for surviving in lightless caves.
A study reveals that new bird species arise in lowland habitats before moving higher into mountainous areas, where genetic differences accumulate. The research suggests that climate fluctuations, particularly during the Pleistocene era, contributed to the evolution of these high-altitude populations.
Researchers at WVU are studying the Musashi proteins to understand their role in retinal degeneration and develop a universal therapy. By investigating protein translation and gene suppression, they hope to identify potential pathways to boost protein production and slow vision loss.
Researchers discovered that forest mammals eavesdrop on monkey meals to access fruit dropped by messy eaters. This eavesdropping strategy is crucial for these animals' survival, particularly during periods when almond trees produce abundant food.
Researchers provide evidence that mammalian and avian primitive streaks evolved independently, using different mechanisms to form the body plan. They suggest alternative landmark for ethical oversight in human embryological research.
Researchers found that dual-regulation by two distinct groups of splicing factors ensures phase-separation of large exon-containing transcription factors. SRSF3 overrides the splicing-suppressive activity of hnRNP K on large exons.
Researchers discovered mosaic brain evolution in guppies through an artificial selection experiment. This phenomenon indicates that different brain regions evolve independently in response to environmental demands. The study has significant implications for understanding vertebrate and human brain evolution.
Researchers sequenced genomes of 90 Eastern massasauga rattlesnakes and found that potentially damaging gene mutations were less abundant. This suggests that inbreeding might not be as detrimental as theory predicts, as beneficial mutations can easily purge bad ones. The study's findings could influence management decisions.
Researchers have discovered a new species of otter in Germany that dates back to 11.4 million years ago. The Vishnu otter genus was previously known only from Asia and Africa, but this finding suggests they also occurred in Europe.
Scientists have discovered that geckos use their tails to recover from head-first crashes into rainforest trees, with implications for the design of agile robots. This versatile behavior allows geckos to stabilize themselves after impact and maintain control during gliding maneuvers.
A new study assesses the impact of environmental policies on Amazon biodiversity, finding that 40-73,400 square miles of rainforest have been affected by fires since 2001. The research highlights the need for strong antideforestation policies and recognition of Indigenous lands to protect the region's biodiversity.
A new fossil species, Taytalura alcoberi, has been discovered in Argentina's Late Triassic deposits. The 3D-preserved fossil provides insights into the early evolution of lepidosaurs, with its skull revealing a unique sphenodontian body type and dentition that differ from living or extinct groups.
A synthetic hinge concept developed by Indiana University School of Medicine Professor Michael A. Weiss and his team could lead to a breakthrough in 'smart' insulin therapy. The invention exploits a natural mechanism that allows the insulin to adjust its activity based on blood glucose levels, which could transform diabetes care.
Researchers found that jumping spiders can recognize biological patterns of movement, similar to vertebrates, using point-light displays. This skill allows them to focus on potential prey or predators while ignoring inanimate objects.