Articles tagged with Frogs
Researchers observed two new species of kukri snakes exhibiting the unique behavior of gutting frogs and toads. The snakes tear off organs and swallow them alive for up to a few hours, suggesting an alternative feeding strategy has evolved in their species group.
Researchers report the first-ever observation of this unique reproductive strategy in Paranapiacaba Treefrogs. The study found that 3cm-long tadpoles hatch in water pools within bromeliad plant tanks and then transfer to a nearby stream to complete their development.
A recent study found that a specific fungus infecting frogs disrupts their skin microbiome, leading to long-term changes. The frog's microbiome fails to recover even after the infection is cured, highlighting the need for further research on microbiome dynamics and disease resistance.
Researchers discovered that glass frogs wave their hands and feet to increase visibility in loud environments. This behavior is a unique form of visual communication among tropical frog species.
A £992,000 grant will support a collaboration between the Universities of Portsmouth and Southampton to use tadpoles to discover genetic changes causing rare diseases. The study aims to provide targeted interventions for patients and their families, improving care and outcomes.
Research found that beaver-dammed sites had 2.7 times more amphibian species than undammed sites, supporting species that develop slowly like red-legged frogs and northwestern salamanders.
Researchers found evidence that fringe-lipped bats eat other bats and hummingbirds, challenging previous assumptions about their foraging behavior. The study used DNA analysis to understand the bats' diets and behavioral experiments to confirm these findings.
Scientists have detected signs of a frog listed as extinct using environmental DNA in two regions of Brazil. The frog, Megaelosia bocainensis, was among seven total species detected, including four declining species and two that had disappeared locally for many years.
A large-scale study on frogs and their tadpoles found that larval and adult body sizes are significantly and positively related. The association is not completely random, with some families exhibiting strong constraints.
A study analyzed CT scans from 54 frog families to show that burrowing frogs have a diverse and quirky skeleton. To train like a forward burrower, strengthen your upper back by doing exercises such as the Prone W and focus on building strength in the shoulder blade area with pullups and pushups.
Primary care providers face increasing workload with limited time due to insurance, EMR systems, and COVID-19. Many have reduced clinical schedules or switched to hospital medicine to manage workload.
Researchers found that aquatic beetle Regimbartia attenuata can actively escape from the vent of frog Pelophylax nigromaculatus via its digestive system. The beetle promotes frog excretion to facilitate its escape, and this behavior was observed in four other frog species.
A new study published in Molecular Ecology reveals that the genes responsible for protecting frogs may actually be leading to their demise in the face of the invasive chytridiomycosis disease. Researchers found that frogs that died from the disease had higher expression of immune system genes than those that survived.
Hundreds of frog species have a green coloration due to a biochemical workaround that combines a virus-fighting protein with a toxic bile pigment, not relying on traditional skin chromatophores. This adaptation ensures good camouflage in leafy environments and has evolved over 40 times across different families of treefrogs.
Researchers found that biliverdin-binding serpins (BBSs) are responsible for the blue-green coloration of frogs, which helps with camouflage. BBSs alter the spectral absorbance of biliverdin and fine-tune the frog's reflectance spectra.
Researchers from Utah State University and Butantan Institute report the discovery of oral venom glands in amphibians, specifically caecilians. These glands, similar to those found in snakes, are thought to have evolved as an early defense mechanism against predators.
A new species of diamond frog, Rhombophryne ellae, has been discovered in Montagne d'Ambre National Park, northern Madagascar. The species features distinctive orange flash-markings on its legs and large black spots on its hip. Its discovery highlights the gaps in knowledge of amphibians in tropical regions.
Researchers used photographs of frogs in their natural habitats to identify individual species without capturing them. This method was successful in identifying 94.3% of the 'Beautiful stream frog' population, providing a promising approach for estimating endangered frog populations.
A new study found that the alien spotted-thighed frog has an indiscriminate diet, devouring up to six prey items per frog, including native geckos, young frogs, and mice. The invasive species could have devastating impact on invaded habitats, displacing or destroying local food webs.
Researchers reveal that glass frog translucency acts as a unique form of camouflage, but with a mechanism different from true transparency. The 'edge diffusion' strategy involves a diffuse gradient between the frog's color and its surroundings, making it harder to spot.
A new species of miniaturized stump-toed frog, Stumpffia froschaueri, has been discovered in Madagascar and classified as Critically Endangered due to habitat loss and fragmentation. The species is found only in areas with relatively undisturbed forest, where it has been observed during the day.
A study warns that water frog populations in Turkey's Ceyhan and Seyhan deltas are declining by 20% annually, threatening regional extinction by 2050. The authors recommend banning wild frog harvesting and encouraging sustainable frog farming to alleviate pressure on wild populations.
Researchers at Kyoto University found that snakes and frogs engage in a delicate waiting game, where each animal waits for and anticipates its opponent's actions. This allows them to predict successful capture or escape outcomes.
Male treefrogs synchronize their mating calls with neighboring frogs to create an auditory illusion that attracts predators to the leading call, leaving females unaffected. Researchers found this strategy allows male frogs to find mates without risking their lives.
A new study by Washington State University researchers found that stressed wood frogs are more susceptible to lethal ranavirus infections in salinity-rich environments. The findings suggest a link between environmental stress and increased disease vulnerability, with implications for wildlife conservation and mass die-offs.
The discovery of ancient frog fossils in Antarctica provides insight into a warm and temperate climate before the continent's separation. The 40-million-year-old fossils found on Seymour Island suggest that the Antarctic Peninsula may have had forests similar to those in modern-day South America.
A 29-million-year-old coquí frog fossil discovered in Puerto Rico has been identified as the oldest record of frogs in the Caribbean. The ancient species displaces an amber frog fossil previously thought to be the oldest, shedding new light on the origins of Caribbean wildlife.
A study of 158 frog species reveals that radically shaped skulls have evolved more than 25 times in frogs. These armored frog skulls often feature intricate patterns of grooves, ridges, and pits formed by extra layers of bone, which tend to appear together with specific feeding habits or defenses.
A study reveals biofluorescence is widespread among amphibians, including salamanders and frogs, which may aid in finding each other and avoiding predators. The phenomenon's mechanisms are linked to the presence of fluorescent proteins and compounds in skin, secretions, and bones.
Snakes' toxin production adapts to new diet source, maintaining predator defense. The Japanese colubrid snake Rhabdophis tigrinus accumulates bufadienolides from fireflies after switching from frogs and toads.
A University of Saskatchewan study found that endangered Colombian poison frog hybrids originated from natural breeding between two known species, rather than human activity. The research confirms the genetic diversity of the frogs benefits the ecosystem.
A Michigan State University-University of Maryland study found that the decline of frogs led to a significant decrease in snake diversity, with an estimated 85% probability of fewer species. The research highlights the importance of long-term data for understanding biodiversity loss and its cascading effects on ecosystems.
A new study found that after a chytrid fungus outbreak in Panama, decimated frog populations, the number of snake species declined dramatically, causing the snake community to become more homogeneous. The loss of amphibians had a ripple effect on the ecosystem, leading to a drop in body condition and occurrence rates among snakes.
A study on the developmental origins of the frog urostyle reveals that thyroid hormone-mediated ossification played a crucial role in tail loss and rearrangement of the dorsal aorta. This process allowed for evolutionary novelty, shaping the body plan of Anura, including frogs.
A study tracing acoustic communication across land-living vertebrates reveals that the ability to vocalize dates back to 350 million years ago. The researchers found that this trait is associated with a nocturnal lifestyle, which provides an advantage for sound-based communication.
The FrogPhone allows scientists to remotely call and monitor frogs in the wild using solar-powered technology, transmitting real-time acoustic surveys over the phone. The device enables researchers to track frog populations with greater frequency and ease, supporting biodiversity conservation studies.
A team of biologists found at least seven different systems regulating sex determination across closely related species. Genetic analysis revealed three underlying mechanisms driving sexual differentiation in frogs, including the empowerment of a gene that becomes potent for female-specific sex determination.
A new chimeric ranavirus, RCV-Z2, discovered in North America has the potential to decimate tadpole populations quickly through multiple transmission pathways. The virus can spread efficiently through direct contact, necrophagy, and waterborne transmission.
A University of Pittsburgh study found that sexual selection alone could spark the formation of new species through imprinted behaviors. The research, which focused on strawberry poison frogs, suggests that females prefer mates with similar colors to their mothers and males become more aggressive against rivals with matching colors.
Biologists have documented the widespread presence of the notorious chytrid fungus in 80 species of frogs from lowland rainforest sites in the Peruvian Amazon. The study found that even lowland frogs with high levels of fungal infection showed no external signs of disease, suggesting they could serve as a large disease reservoir.
A study found high rates of 'cold-loving' fungus infection in frogs from the Peruvian Amazon, a region previously thought to be free from disease. The discovery suggests that important reservoirs of infection may exist beyond areas with high mortality rates, threatening global frog populations.
A new study suggests that imprinting on mothers plays a crucial role in shaping the color morphs of poison dart frogs, potentially driving the formation of new species. Researchers found that female frogs tend to choose mates of the same color as their mother, while males choose rivals based on their mother's color.
Researchers map distribution of deadly chytrid fungus using skin swabs, revealing four known lineages and a new one originating in Asia. The study provides key insights into the disease's origins and geographic spread.
A team of evolutionary biologists found that diversity exists even when expecting otherwise, as rare warning colors in poison frogs persist alongside stronger signals. The research suggests that predators learn to avoid more distasteful yellow frogs and generalize this avoidance to white frogs.
Goliath frogs create three types of ponds to safeguard their eggs and tadpoles from predators. Researchers observed the frogs' laborious pond-building efforts, which may explain why they evolved to be giant.
Researchers built mini temperature-controlled habitats to study how poison frogs adapt to warmer temperatures. The study found that frogs from sunny pastures prefer higher temperatures, but their maximum tolerance remains unchanged.
Researchers describe 11 new species of rain frogs in the Ecuadorian Andes, showcasing remarkable genetic and morphological diversity. The discovery highlights pressing conservation issues due to habitat destruction and human activities.
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.
Researchers have detected ranavirus infection in wild bullfrog tadpoles in Brazil's Atlantic Rainforest, linked to declining amphibian populations worldwide. The virus may have spread from frog farms, highlighting the dual threat of invasive species and pathogens.
Researchers discover distinct skin microbiome in frog populations with and without ranavirus outbreaks, suggesting a protective role of skin bacteria. Further study is needed to understand the mechanisms behind this relationship.
Researchers found that atmospheric oxygen exposure triggers removal of interdigital webbing during embryo development. This mechanism is thought to be shared by all tetrapods and contributes to limb shape variation. The study provides insight into the evolutionary process behind limb development in animals.
Researchers found that poison dart frogs possess a sophisticated brain capable of forming a cognitive map of their environment. They demonstrated this by testing the frogs' spatial awareness in a modified Morris water maze, where they successfully located a hidden platform using visual cues and landmarks.
A new study found that rain-filled tracks of Asian elephants provide temporary habitat for breeding and connect frog populations. The tracks can persist for a year or more, serving as stepping stones for the frogs during the dry season.
A team of scientists has developed a 5-step program to keep New Guinea's frogs safe from the species-destroying chytrid fungus. The plan, published in Frontiers in Ecology and the Environment, aims to prevent the fungus from reaching the island while building local capacity for science and disease surveillance.
A UC Davis study found that environmental temperature significantly affects the development of frog eggs into larvae, influencing gene expression and neurodevelopment. The research also suggests that fluctuations in body temperature may impact nervous system development and disease in humans.
Research by Zoological Society of London and University College London reveals that climate change is increasing the spread and severity of a fatal disease in UK common frogs. The disease, caused by Ranavirus, is predicted to become more widespread and frequent if carbon emissions continue at their current rate.
A Yale-led study reveals that 1,012 additional amphibian species are at risk of extinction, with many found in South America and Southeast Asia. The study predicts that more than half of these species are 'Endangered' or 'Critically Endangered',
A study by Oregon State University researchers found that juvenile northern red-legged frogs stressed as tadpoles are less likely to move on land, putting their survival at risk. The study suggests that climate-related stress can have long-term effects on the distribution and persistence of animals in freshwater habitats.
Researchers at Tokyo University of Agriculture and Technology identify molecular mechanism behind Bombinin H2 and H4 peptides' antimicrobial properties. The peptides inhibit microbial activity by creating holes in cell membranes, ultimately killing microorganisms.
Biologists seek to determine why bodies eliminate DNA during hybridization, aiming to grasp the molecular mechanisms behind this process. By studying frogs, they hope to unlock the secrets of genome elimination and its crucial role in species survival.