Articles tagged with Amphibians
Researchers from the Pontificia Universidad Católica del Ecuador discovered a new species of frog, Pristimantis milpe, by reviewing historical specimens preserved at the Natural History Museum in London. The species is widely distributed and easy to detect, inhabiting the Chocó forests of western Ecuador and southern Colombia.
An international team of scientists describes seven new species of Madagascar's elusive diamond frogs, revealing a more diverse group than previously thought. The research provides an important foundation for future conservation efforts in Madagascar's rapidly disappearing forests.
A study found that some toad populations recover from a deadly fungus due to the early maturation of antimicrobial peptides in their tadpole stage. This immunity allows them to survive as adults, suggesting that environmental factors such as temperature may play a role in disease progression.
A new genus of giant salamander, Limnospondylus ajimuensis, has been identified from fossilized vertebrae found in the Ajimu region of Japan. The discovery sheds light on Japan's evolutionary history and highlights the importance of preserving extant species for the future.
New study redefines the existence of necks in fish and amphibians, identifying functionally distinct anatomical regions. The project aims to build new definitions that apply more widely across all major vertebrate groups.
Researchers found that wood frogs' adaptation to salty water increases their vulnerability to ranavirus, a common and fatal disease. The study highlights the hidden costs of survival in wildlife under environmental stress.
A study by researchers from the University of Ottawa found that Calling and Non-calling western toads are genetically distinct, behaviourally different, and have ecological variations. This discovery has important implications for conservation and wildlife management in Canada.
A study published in Journal of Experimental Biology found that strong sunburn causes 47% more DNA damage and lethal consequences in tadpoles. The research suggests that short intense UVB doses can be more lethal than longer weaker doses, increasing the risk of mortality on sunny days.
A new study reveals that threatened amphibian species are being inadvertently sold under incorrect names in digital marketplaces. Genetic barcoding analysis identified four frogs advertised as Chinese edible frogs as actually being Chinese spiny frogs, classified as Vulnerable by the IUCN.
A study by the University of Florida reveals that young frogs invest heavily in early growth and delay stronger immune responses until infection levels become dangerous. This strategy helps them survive and reproduce in environments with fluctuating food availability and infection risk.
Researchers found that Ohio wall lizards' rapid population growth and adaptation to their new environment, with similar climate and habitat, contributed to their success. The study suggests that ecology plays a more significant role in the lizards' invasion than genetic factors initially thought.
A study by Kyoto University researchers found that the bright orange tail of tadpoles serves as a lure to distract predators, allowing them to avoid more vulnerable parts of their body. The team observed that dragonfly nymphs were more likely to attack the tails than other body parts.
A Brazilian study analyzed data from over 5,000 territories and 1,924 anuran amphibian species to determine the biodiversity of these habitats. The research found that two main theories about island biodiversity do not explain the richness of anuran amphibians on their own, but rather are complementary factors.
A global meta-analysis of animal behavior found that urban populations exhibit heightened boldness, aggression, exploration, and activity compared to rural counterparts. The findings highlight the need for urban planners to consider animal behavior in urban development.
Researchers found that amphibian metamorphosis entails a direct cost, including weight loss and reduced energy intake, which varies by sex. The study uses the palmate newt as a model to shed light on the evolutionary mechanisms governing the persistence or loss of metamorphosis, particularly in the context of climate change.
Researchers found that connected habitats enhance the ability of amphibian skin microbiome to defend against diseases by increasing beneficial bacteria presence. This study highlights a critical link between environmental disturbance, microbial defenses, and disease dynamics.
Researchers found that connected natural habitats help maintain beneficial skin microbes that inhibit deadly fungal pathogens in tropical amphibians. Habitat fragmentation weakens these microbial defenses, leading to increased pathogen infection levels.
A new review reveals major blind spots in Bhutan's amphibian and reptile research, with most studies focusing on species records and ecology. The study highlights the need for deeper research on genetics, disease, physiology, and long-term conservation to strengthen conservation efforts.
Researchers found that specific amino acids in the TRPM8 protein of salamanders that prefer cooler environments lead to diminished cold sensitivity. This discovery provides insight into the mechanisms behind temperature-sensing channels in tailed amphibians.
Rising temperatures of just 1°C drastically increase the likelihood of malformation in Neotropical lizards. Thermal stress caused by climate change disrupts normal development, leading to severe consequences.
Parasites alter male calls, creating a complex pattern that can change how females evaluate potential partners. Females prefer lower-frequency calls, but also weigh the risk of parasite infection, making mate choice a nuanced decision.
Researchers found that Gracixalus weii treefrog's call is similar to a bird-like chirp of the Black-Breasted Thrush, highlighting the evolution of acoustic symbols in amphibians influenced by ecological interactions with birds. This phenomenon provides a reliable alternative to morphological or molecular diagnosis for cryptic species
The interim update to the State of the World's Migratory Species report warns that 49% of migratory species populations are declining, with 24% facing extinction, due to habitat loss and overexploitation. The report highlights the need for coordinated international action to address these threats and protect migratory species.
Fossils from the Lower Triassic of Western Australia confirm a cryptic marine temnospondyl community, showing that earliest sea monsters adapted to life in the sea and radiated rapidly into various ecological niches. The discovery also reveals worldwide dispersal of these ancient animals across supercontinents.
Temperature impacts the quality and speed of male frogs' mating calls, which are more attractive to females in warmer conditions. This study suggests that female frogs use these calls to gauge environmental suitability for reproduction.
A recent Illinois study found that nearly 8,500 online classified ads for exotic amphibians were posted between 2004 and 2024, representing 301 species from around the world. The researchers verified a dataset of these listings, revealing 44 species traded without official paperwork, sold at a 40% premium. This illicit trade poses sign...
The Japanese giant salamander's diet shifts from aquatic insects to large prey like fish and crabs as it grows, allowing it to reach the top of its ecosystem. This transition is accompanied by an increase in trophic position, enabling the species to become a superpredator.
The discovery sheds light on marine ecosystems' rapid recovery and complexification after the end-Permian mass extinction. The Spitsbergen fossil deposit reveals diverse marine reptiles, including archosauromorphs and ichthyosaurs, with some species reaching 5m in length.
A University of Houston biologist has received a $2.16 million federal grant to study how some coastal frogs survive in salty environments. The research could reveal how cells cope with salt stress and have implications for understanding the health risks of high-salt diets in humans.
Researchers have identified three new species of tree-dwelling toads from Africa that skip the tadpole phase and give birth to live toadlets. This rare reproductive strategy is found in less than 1% of frog species, making these toads exceptionally interesting.
Scientists suggest that managing pond conditions can tip the balance in favor of native species. Research found that longer hydroperiods, typically over 110 days, lead to larger and more stable populations.
A new study by Cornell University researchers found that tadpoles that lose their lungs through evolution never regain them, even when environmental change would favor it. This challenges the assumption that lost traits can easily reemerge.
Researchers created a high-resolution map of Panama showing the movement and intensity of Batrachochytrium dendrobatidis, a deadly fungal disease. The data reveals that higher elevations are more hospitable to the fungus, but rainy seasons bring outbreaks in lowlands.
Researchers at Kyoto University discovered that crested serpent eagles possess a unique genetic mutation allowing them to resist the toxins of invasive cane toads. The eagle's toxin resistance is attributed to the same amino acid sequence as the Siamese red-necked keelback snake.
In a groundbreaking discovery, researchers have identified three new species of frogs in the Cordillera de Huancabamba highlands. The study reveals that these secretive creatures possess unique characteristics, such as prominent tubercles on their bodies and adaptations to the harsh environment.
A new study from Goethe University confirms that climate change and extreme weather events are devastating amphibian diversity. Analysis of global weather data reveals a direct connection between increased heat waves, droughts, and declining salamander populations.
Researchers found that artificial water bodies, especially historic stone tanks, support a higher diversity of species compared to natural habitats. These structures serve as stable environments for vulnerable eggs and larvae, providing a lifeline for amphibian populations amidst climate change and land-use change.
A new blue Ranitomeya species has been discovered in the Amazon's Juruá River basin, featuring copper-colored legs. This finding represents one of only two novel Ranitomeya species identified in a decade.
Researchers found that captive-bred axolotls can survive in both artificial and restored Mexican wetlands. However, they may need specific temperature conditions to thrive, offering insights for amphibian reintroductions and translocations.
A mass mortality event occurred in Triassic Wyoming, where dozens of giant amphibians called metoposaurid temnospondyls died together on an ancient floodplain. The study provides a unique snapshot of a single population and doubles the known number of individuals of the species Buettnererpeton bakeri.
A team of researchers has rediscovered the elusive Alsodes vittatus frog species in Chile, providing critical ecological data and highlighting conservation concerns. The rediscovery is a significant milestone for South American herpetology, emphasizing the need to study and protect this rare species.
A new study by UNSW researchers predicts the heat tolerance of 60% of the world's amphibian species, revealing that 2% are already exposed to overheating in shaded terrestrial conditions. A 4°C global temperature increase could push 7.5% of species beyond their physiological limits.
The University of Texas at Arlington (UTA) has donated thousands of natural history books and journals to Ecuador's National Biodiversity Institute, expanding its research and education programs. The donation, valued at over 8,570 books, 2,000 journals, and 500 articles, will support the work of biodiversity specialists, students, and ...
A recent Hungarian study found that garden pond features such as age, area, aquatic vegetation, and shoreline vegetation influence the occurrence of animals like amphibians, odonates, and birds. The study highlights the importance of pond management practices to support biodiversity in urban areas.
Researchers warn of environmental risks posed by snakes and insects in imported ornamental plants, calling for improved regulations and sustainable practices. The study highlights the difficulty of monitoring and controlling pests due to high-volume trade, posing a threat to ecosystems and human health.
The University of Texas at Arlington's Amphibian and Reptile Diversity Research Center (ARDRC) has expanded its library with a donation of over 10,000 rare items, including books, scientific journals, and reports. This addition will provide scientists worldwide with access to a wealth of literature on reptiles and amphibians.
Researchers at ISTA and Columbia University developed a technique using adeno-associated viruses (AAVs) to track a frog's nervous system throughout its metamorphosis, shedding light on the neural circuit and behavior changes during this transition. The breakthrough can help usher amphibian neurobiology into a new era.
A Kennesaw State University researcher has received a National Science Foundation grant to study the evolution of salamanders' behavioral habits in urban streams. The study aims to broaden research participation at minority-serving universities and will provide undergraduate students with hands-on experience conducting field research.
New information and guidance on monitoring and managing ranaviruses are provided in the second edition of Ranaviruses: Emerging Pathogens of Ectothermic Vertebrates. Ranavirus infections have been confirmed in over 177 species, causing mass die-offs and affecting biodiversity.
A Simon Fraser University study ranks Canadian terrestrial vertebrates by their level of evolutionary distinctness, finding that amphibians and reptiles are the most distinct species. The spiny softshell turtle is the most evolutionarily distinct terrestrial animal in Canada.
Researchers have discovered a remarkably preserved fossil site in Massachusetts that provides a rare glimpse into terrestrial life from over 300 million years ago. The findings reveal a diverse ecosystem of early land-dwelling animals and plants, including some of the oldest known examples of their groups.
A University of Arizona study has found a consistent pattern: Animals with higher body temperatures are more likely to evolve into herbivores. This relationship holds true across major land vertebrate groups, and is linked to the unique digestive challenges posed by plant-based diets.
Researchers have created a detailed 3D atlas of the African clawed frog's development, revealing key changes during metamorphosis. The atlas uses X-ray microtomography to show the transformation from tadpole to mature adult frog.
A global database of animals with four feet has identified significant gaps in tetrapod knowledge, including biases in biodiversity data. Researchers used artificial intelligence to predict missing data and improve the accuracy of ecology, evolution, and conservation studies.
A study published in Nature has found that artificial heat shelters can significantly reduce chytrid infections in frogs, allowing them to co-exist with the deadly disease. The simple intervention uses readily available materials and can be easily scaled up for community involvement.
A study using crowd-sourced data from iNaturalist found that slugs and snails are more common in urban areas than other native species. In contrast, butterflies and moths were the least tolerant of urban environments. The analysis provides valuable insights for city planners to increase urban biodiversity.
Researchers have uncovered a 270-million-year-old ancient amphibian ancestor in the Smithsonian's collection, naming it Kermitops gratus in honor of Kermit the Frog. The fossilized skull possesses unique features that shed light on the origin of living frogs and other amphibians.
Scientists have scanned over 13,000 vertebrate specimens using CT technology, making them available for free online. The scans provide a detailed view of internal structures, allowing researchers to study specimens in ways previously impossible.
Researchers have developed a noninvasive method to quickly detect the deadly fungus Batrachochytrium salamandrivorans in shipments and captive settings. The new approach tests environmental DNA for Bsal DNA to assess the pathogen's prevalence, providing a way to make an essentially invisible pathogen visible.
A Hungarian study reveals that pond networks rely on spatial position for species diversity, with central connections hosting higher microorganism and plankton diversity. This research highlights the importance of connectivity in maintaining biodiversity in fragmented ecosystems like bomb crater ponds.