Peru's Manu National Park has been recorded with 287 species of reptiles and amphibians, surpassing the previous record in Yasuní National Park. The park's high species diversity is attributed to its large area and steep topographic variation, despite being only 0.01 percent of the planet's land area.
A new fossil specimen of the ancient Mesozoic marine reptile Chaohusaurus has revealed evidence of a live birth, suggesting that live births in land reptiles may have appeared much earlier than previously thought. The discovery provides the oldest vertebrate fossil to capture the moment of live-birth.
Researchers used a 3D printer to recreate the snake's UFO-like cross-section and found that it generates sufficient lift at most angles. However, they also discovered a massive spike in lift when tilting the model at 35 degrees and an unexpected vortex sucking the rod down.
Researchers at Lund University analyzed pigment in three multi-million-year-old marine reptiles, discovering they were dark-coloured in life. This finding likely aided thermoregulation and camouflage.
The study found that cartilaginous fish, including the elephant shark, have slower rates of intron evolution than invertebrates. This suggests a general characteristic of vertebrates and helps clarify relationships between different jawed vertebrate groups. The findings provide unique insights into gnathostome evolution.
International team uncovers first record of dinosaurs from Saudi Arabia, featuring a sauropod and carnivorous theropod species. The discovery sheds light on the region's rare dinosaur fossil record.
Three new lizards from Peru have been identified as distinct species using a combination of molecular, ecological, and morphological analyses. The study demonstrates the feasibility of discovering new species with limited resources, highlighting the importance of stable scientific names for biodiversity conservation.
Research published in Ecology Letters reveals the ancestor of snakes and lizards likely gave birth to live young, contrary to long-held assumptions. The findings support the idea that live birth has a more ancient past than previously thought, dating back 175 million years ago.
A recent study published in Molecular Biology and Evolution found that herbivores have a greater number of Tas2r bitter taste receptor genes than omnivores and carnivores. The researchers correlated the Tas2r gene repertoire with dietary compositions, revealing a significant relationship between plant diet fraction and Tas2r gene number.
A new study reveals a 'cascade of events' triggered an early sea level rise, driving animal diversity and innovation during the Cambrian period. The explosion led to the origin of modern ecosystems, skeletons, and specialized modes of life.
Research shows that orangutans and gorillas can form concepts beyond perceptual similarity, matching images by taxonomic class. This finding suggests a shared conceptual process with humans and refutes the notion that biological categories depend on scientific knowledge or labels.
Research reveals how ancient crocodiles evolved and survived alongside dinosaurs, with notable variations in jaw shapes and biomechanics. The study, published in Proceedings of the Royal Society B, provides new insights into the evolution and adaptation of ancient crocodiles during the Mesozoic Era.
The Chinese alligator genome has been sequenced, revealing adaptations for living in both water and land habitats and providing insights into the species' unique features. The study also sheds light on temperature-dependent sex determination and immune system development.
A new study published in Nature reveals that at least a few non-avian dinosaurs had brains as large or larger than those of Archaeopteryx, indicating they may have had the neurological hardwiring necessary for flight. This challenges the idea that Archaeopteryx was uniquely transitional between feathered dinosaurs and modern birds.
Researchers at the University of Adelaide have discovered that dinosaurs required more muscular power to prey on other animals and dominate over mammals than previously thought. The study challenges the long-held notion that dinosaurs were cold-blooded, like reptiles.
Rising temperatures cause snakes to become more active, devouring mosquito-eating birds like the Acadian flycatcher. This increase in snake predation has severe consequences for agriculture, disease prevention, and tourism.
A study led by a University of Arizona ecologist found that many species evolve too slowly to adapt to the rapid climate change expected in the next 100 years. Terrestrial vertebrate species appear to evolve too slowly to be able to adapt to the dramatically warmer climate expected by 2100.
A new study reveals that a Pangean desert supported a unique fauna, including the giant pareiasaur Bunostegos, which sported large, bulbous skulls resembling modern giraffe horns. The discovery supports the theory of central Pangea being climatically isolated, allowing this relict fauna to evolve distinct anatomical features.
Scientists have discovered a remarkable diversity of flying reptiles, including 30 species and five genera, from the Cretaceous period in England. The fossils show varying head crests and teeth sizes, suggesting different feeding preferences.
Paleoanthropologist Russell Ciochon and colleagues discover a new species of plant-eating lizard, Barbaturex morrisoni, which lived in Southeast Asia 40 million years ago. The giant lizard was one of the largest of its kind, with some specimens reaching six feet in length.
A new study reveals that Southeast Asian monitor lizard species are being harvested and traded in unsustainable volumes, threatening their survival. The trade, particularly for pet owners, has led to over-exploitation and extinction, with many species facing critical threats.
A team from Michigan State University is studying the Napo River's ecohydrology to assess its impact on the region. The research aims to document the river in its 'wild' state before major engineering work is conducted, guiding economic development and promoting conservation.
Researchers John Isbell and Erik Gulbranson study ancient climate shifts to understand modern-day drastic climate change. They find evidence of 22 individual ice sheets in Gondwana, suggesting dramatic temperature swings and atmospheric CO2 levels fluctuations.
A new species of green palm-pitviper was described from a cloud forest reserve in northern Honduras. Genetic analysis revealed that the closest relatives are found over 600 km away in Costa Rica, indicating a relict lineage.
A new species of ichthyosaur from Iraq, named Malawania anachronus, has been discovered, contradicting previous theories on the evolution and extinction of these ancient marine reptiles. The discovery reveals that ichthyosaurs remained diverse during the early part of the Cretaceous period.
Research predicts that climate change will cause a dramatic decline in common plant and animal species by 2080, with plants, reptiles, and amphibians facing the highest risk. Acting quickly to mitigate climate change could reduce losses by 60%.
Research using GBIF data found nearly two-thirds of plants and half of animals could lose more than half their climate range by 2080. Swift action to limit emissions can reduce losses by 60% and buy additional time for species adaptation.
A GWU biologist has created the largest-ever evolutionary family tree for all known snake and lizard groups, covering over 4,000 species. The study, published in BMC Evolutionary Biology, provides a comprehensive classification system for these reptiles.
A decline in snow cover poses a significant threat to many plant and animal species, compromising their survival during harsh winter weather. The subnivium, a seasonal microenvironment beneath the snow, is experiencing drastic changes due to rising temperatures.
A new 'tree of life' for fishes has been recharted with the help of genetic and physical information, revealing significant changes to existing ideas on fish relationships. The research improves scientists' ability to predict how closely related species might react to environmental factors like climate change.
A new study evaluates the effectiveness of the Natura 2000 network in covering threatened European species, finding that many fish species are poorly covered. The authors recommend increasing site numbers, developing public awareness, and involving local people in conservation strategies to improve efficiency.
A new study reveals that proportions of threatened species are more closely related to socio-economic pressures from the early 20th century. This 'extinction debt' implies that current conservation efforts may underestimate true extinction risks, as many species may already be destined for extinction due to temporal delays.
A new study finds that sea level rise will lead to significant habitat loss and threaten the survival of endemic species in Southeast Asian and Pacific islands. The researchers predict that even a one-meter sea level rise could result in the loss of up to 14.7% of all islands in the region.
Scientists have measured the nerves in crocodilians, which are sensitive to changes in their environment. This new measurement will aid biologists in understanding how ancient animals interacted with their surroundings. The research also aims to trace the evolution of this nerve and its relation to animal ecology.
The study reveals that turtles activate existing genes in new ways to adapt to oxygen deprivation, which may lead to improved treatments for human heart conditions. The research also highlights the importance of preserving turtle diversity due to their slow evolution rate and declining global populations.
Scientists at King's College London found that the middle ear cavity is formed by two different tissue types, one of which is less efficient at clearing debris and more susceptible to infection. This 'evolutionary glitch' may be the reason why some children are more prone to developing chronic ear problems like glue ear.
Two new species of woodlizards were found in the Peruvian jungle, increasing the country's biodiversity. The newly described lizards, Enyalioides azulae and Enyalioides binzayedi, share a similar territory with slight differences in altitude ranges.
An international team led by UCSC biologist Barry Sinervo is investigating how climate change affects plant communities and animal populations globally. The study will evaluate the effects of changing temperatures on local populations of lizards, frogs, fish, and other vertebrates.
A recent study led by George Washington University Assistant Biology Professor Alex Pyron used DNA sequencing technology to discover a new species of blindsnake in Sri Lanka, revealing the island's immense biodiversity. The research also shed light on the evolutionary relationships between snakes and other reptiles globally.
Researchers at Georg-August-Universität Göttingen used parthenogenic stem cells to create cardiomyocytes and engineered heart muscle with normal properties. This breakthrough demonstrates the potential of parthenogenic stem cells for tissue engineering and could lead to new cell replacement therapies.
Scientists successfully use parthenogenic stem cells to develop functional heart muscle and treat pulmonary fibrosis. Researchers find that inhibiting a protein called ROCK attenuates myofibroblast survival and prevents lung scarring.
Researchers aim to mimic reptiles' ability to increase locomotion efficiency and frogs' high propulsion. They investigate drinking strategies of carnivorous animals like cats and dogs to develop bio-inspired systems.
A new study reveals that some turtle populations are among the least likely to recover from climate change impacts. Protecting key regional nesting beaches and areas suitable for future nesting is crucial to enhance marine turtles' resilience.
A new study reveals that nearly 1 in 5 reptiles are struggling to survive, with many species highly specialized and sensitive to environmental changes. The findings highlight the urgent need for conservation action to address habitat loss, hunting, and other threats, particularly in tropical regions.
A recent study documents more than 100 species of amphibians and reptiles in Luzon's Sierra Madre Mountain Range. The region's unique biodiversity includes 32 endemic amphibian species and 76 native reptile species.
Researchers use high-energy X-rays and new data extraction protocol to study 360 million year old fossils, shedding light on how early vertebrates moved from water onto land. The discovery reveals a new understanding of the backbone's structure and its functional evolution.
The 244-million-year-old Thalattoarchon saurophagis, a giant ichthyosaur, provided significant findings on the recovery of modern marine ecosystems following a severe Permian extinction. The discovery sheds light on the dynamics of evolving planet and its impact on today's environment.
Researchers discovered a new species of mosasaur that lived about 84 million years ago in freshwater river environments. The largest specimens reached up to 20 feet in length and had unique characteristics such as limbs like a terrestrial lizard, a flattened skull, and a tail unlike other known members.
A 44-member international team is conducting a comprehensive survey of fly species in a tropical cloud forest in eastern Costa Rica. The project aims to identify at least 3,000 new species and contribute to understanding complex ecosystems and conservation efforts.
A total of 42 reptile species were found in Lenáois Maranhenses National Park, with approximately 80% living in restinga habitats. The park's ecosystems are threatened by human activities such as off-road vehicle use and path creation, which could harm the environment and potentially endangered species like sea turtles.
Researchers at Uppsala University found that male genitalia morphology affects fertilization success in female seed beetles, driving rapid evolutionary changes. This competition among males has generated significant biological diversity and contributed to species formation.
A study published in Current Biology demonstrates that male genital shape affects fertilization success in a species of seed beetle. Males with longer genital spines produced substantially more offspring than those with shorter spines, highlighting the importance of competition among males in driving evolutionary changes.
A study found that protected areas in Catalonia have a high number of animal deaths on the roads, with amphibians being most susceptible. Researchers suggest building tunnels for amphibians to reduce mortality rates.
Scientists discovered extreme temperatures in the tropics during the end-Permian mass extinction, lasting five million years. The lengthy devastation was caused by a temperature rise of 50-60°C on land and 40°C at sea-surface.
A new study reveals that duck-billed dinosaurs had six types of dental tissues, four more than reptiles, allowing for advanced grinding capacity. Their teeth functioned perfectly if put back into a living dinosaur, opening doors for studying fossilized teeth.
Scientists have identified the genetic building blocks behind the human heart's subtle control system, which shares similarities with birds and reptiles. The study reveals that a spongy inner tissue in fetal hearts stretches out to form a fine network of conductive tissue in adult animals.
A novel arenavirus has been identified as the possible cause of inclusion body disease in snakes, a devastating illness that spreads easily among boas and pythons in captivity. The discovery may lead to the development of diagnostic tools and treatments to eradicate the disease from snake collections worldwide.
Researchers discovered that geckos have trouble sticking to smooth, wet surfaces when their feet get wet. The animals' toes produce a water-repellent layer, which interferes with their adhesive mechanism. However, once the lizards' feet dry, they can regain their grip and walk on wet surfaces.
Researchers at the University of Akron are studying geckos' foot pads to develop a synthetic adhesive that sticks when wet. The team hopes to create materials for surgical procedures and other applications where adhesion is crucial in wet environments.
A recent study published in Genome Biology and Evolution found that paddlefish have a duplicated genome, adding complexity to comparative studies. This discovery may require re-interpreting previous research on the fin-to-limb transition using paddlefish as a proxy for human ancestors.