Articles tagged with Frogs
A new species of rainfrog, Pristimantis gretathunbergae, has been discovered in Panama and named after global environmental activist Greta Thunberg. The frog's habitat is threatened by climate change and deforestation, highlighting the importance of conservation efforts.
Researchers at the University of Vermont have created the first living robots capable of reproducing, using AI-designed Xenobots. This groundbreaking achievement has significant implications for regenerative medicine, as it demonstrates a new form of biological self-replication.
Researchers confirmed the presence of dentin and enamel in the teeth of Gastrotheca guentheri, a species long believed to have lost this trait. The discovery challenges Dollo's Law, which states that lost traits are never re-evolved.
A Brazilian study expands amphibians' known reproductive modes to 74, creating a new classification. The research analyzed 2,171 species of amphibians, including anurans with 71 reproductive modes, some laying eggs in aquatic environments while others develop directly.
A study in the Atlantic Rainforest detected high mortality rates among tiny frogs known as pumpkin toadlets infected with the chytrid fungus. The infection causes a physiological imbalance leading to death from a heart attack. Climate change and drought may exacerbate the threat to terrestrial amphibians.
A new species of frog, Bishop's frog Leiopelma bishopi, has been discovered from fossils in North Canterbury and named in honor of late Professor Phil Bishop. The finding provides significant insights into the evolution of New Zealand's frogs and highlights the impact of climate change on isolated island ecosystems.
A new study led by a University of Maine graduate student found that 50% fewer frogs died from vehicle collisions in spring 2020 compared to previous years. This decline was part of a broader reduction in animal road fatalities during the pandemic, similar to findings in other studies worldwide.
German scientists developed a method to supply oxygen to tadpole brains using photosynthesizing algae injected into their bloodstream. This approach effectively revived neurons in oxygen-deprived tadpoles, showing promise for new therapies for conditions such as stroke and high-altitude environments.
Researchers at Binghamton University found that wood frog eggs laid later in the breeding season are less resilient to road salt pollution. The study highlights the complex effects of climate change on amphibian breeding, which may lead to population declines in vulnerable species.
Researchers have discovered that toxic animals produce 'toxin sponges' to mop up deadly toxins and prevent them from binding to vital proteins. This alternative autoresistance strategy may offer a general means of toxin protection, including the development of antidotes against various toxic agents.
Researchers studied six species of amphibian at Slimbridge Wetland Centre during COVID-19 lockdowns and partial reopenings. Amphibian activity varied depending on the number of visitors, with some species more visible when there were fewer people around.
Researchers used a new survey method to detect Eastern spadefoots in Rhode Island, finding 42 individuals over 10 nights, contradicting previous assumptions of their rarity. The study also revealed sub-adult frogs were common, and the species' social structure is more complex than previously thought.
Researchers analyzed CT scans of nearly every living amphibian genus to reveal that frogs have lost teeth over 20 times during their evolution. The study found a correlation between the absence of teeth in frogs and a specialized diet on small insects.
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.
Researchers found that Amami tip-nosed frog altered its hind limb length in response to the invasive mongoose, with longer legs potentially aiding escape. The frog's endurance also increased under strong predation pressure from the mongoose, but not its burst movement ability.
Chemical engineers at the University of Pittsburgh create self-oscillating flexible materials that display swarmalator behavior, coordinating spatial movement and temporal oscillations. These materials can pave the way for fabricating collaborative soft robotic systems.
Researchers found that frog lungs reduce sensitivity to environmental noise, making it easier for females to zero in on male calls. The unique sound pathway allows sounds from air-filled lungs to transmit to middle ears through a specific mechanism.
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.
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.
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 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 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 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 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.
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.
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 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.