Articles tagged with Frogs
The journal presents studies on playfulness in dogs, dolphins, frogs, and octopuses, as well as its connection to humor, social bonding, and creativity. Researchers investigate how experiences in infancy shape a person's sense of humor and how playfulness affects adaptability and social success.
A new species of fanged frog has been discovered, giving birth to live tadpoles through internal fertilization, a rare reproductive method among frogs. The frog's unique behavior is just one example of the island's incredible biodiversity and adaptive radiation of species.
A novel gene knock-in technique using PITCh enables accurate and efficient insertion of exogenous genes into human cells, silkworms, frogs, and other organisms. This method overcomes technical hurdles associated with homologous recombination in cultured cells and organisms.
A new UCSB study reveals that a fungal pathogen in amphibians disrupts the skin microbiome, leading to dramatic changes in bacterial communities. The research has significant implications for understanding infectious disease dynamics and developing responses to diseases causing amphibian extinction.
A recent study by Germán Orizaola and colleagues found that female frogs can influence the growth rate and development of their offspring in response to changes in reproduction dates. By delaying breeding, females can accelerate larval growth, potentially helping species adapt to environmental uncertainty.
A new species of leopard frog, Rana kauffeldi, has been identified in the New York City metropolitan area through a combination of acoustic and genetic data. The species is found in open-canopied wetlands with upland patches and its range extends from central Connecticut to northeastern North Carolina.
A Rutgers researcher and team of scientists have proven the existence of a new frog species living in wetlands from Connecticut to North Carolina. Named Rana kauffeldi, it was initially dismissed by naturalist Carl Kauffeld's claim in 1937.
Researchers from NUS observe a new reproductive mode in critically endangered white spotted bush frogs, breeding and laying direct-developing eggs in live bamboo. The discovery sheds light on the unique behavior of these frogs and highlights the importance of conservation efforts to protect their habitats.
Researchers found that bright coloration preceded louder, more complex calls in certain species of poisonous frogs, which helped protect them from predators. This led to the development of unique vocalizations, with females preferring lower-pitch, pulsing calls.
Researchers have found that emerging viruses are causing severe disease and mass deaths in many amphibian species, including frogs and salamanders. The viruses, part of the Ranavirus group, are being spread through human activities and are having a devastating impact on entire host communities.
Researchers analyzed Madagascar's lizard, snake, frog, and tortoise populations to understand how biodiversity hotspots come to be. Climate change and land use affect different species differently, with some doing better while others decline.
Researchers found that chickens have a limited number of bitter taste receptors but can compensate with a wider tuning range. Frogs, on the other hand, have more receptors and a mix of broad and narrow tuning capabilities. This diversity may be an adaptation to their environment, which includes both land and water.
A study found that warmer winters lead to earlier breeding in wood frogs, resulting in fewer eggs and delayed tadpole development. However, more rain and snow appear to increase egg production, potentially counteracting the negative effects of warming.
A new poison dart frog species, Andinobates geminisae, has been discovered in Donoso, Panama. Genetic sequencing confirms it is a distinct species from another known poison dart frog, Oophaga pumilio.
Hansen's tree frog embryos hatch earlier after being preyed upon by katydids, responding to chemical cues. This flexible hatching behavior allows the frog an adaptive advantage, as it gives them time to escape into the next life-stage.
A new species of frog was discovered in Malaysian swampland, genetically distinct from its doppelganger on Siberut Island. Genetic analysis using Next Generation Sequencing confirmed the separation, making it a unique finding in herpetology.
A large-scale biogeographic analysis by GW researcher Alex Pyron shows that amphibians have moved across the planet throughout time, with some species dispersing long distances over water. The study reveals three major processes driving their distribution: vicariance, dispersal, and unexpected oceanic dispersals.
A new species of narrow-mouthed frog, Chiasmocleis quilombola, was discovered in the Atlantic Forest of Espírito Santo State, Brazil. The species is tiny, reaching only 14mm in length, and its heroic name refers to the quilombos communities that provided refuge for escaped slaves.
Researchers discovered that Alaska wood frogs can survive colder temperatures for longer periods than previously thought due to higher glucose levels in their tissues. The frogs accumulate glucose through repeated freeze-thaw cycles, which helps protect them against cell damage.
Research found that frog larvae coexisting with the invasive species for 30 years have deeper tails and larger bodies to evade predators. This rapid evolutionary change helps increase their survival chances.
Researchers predict ranavirus as a potential new culprit in amphibian extinctions, especially in isolated wood frog populations. The study suggests that frequent exposure to the virus can lead to extinction within five years.
Australian scientists discovered different species of frogs adopt distinct jumping styles depending on their environment. Frogs from various habitats exhibit unique shapes, such as burrowing frogs having squat bodies and aquatic frogs having streamlined bodies with longer limbs.
Researchers have identified two genes that may help prevent muscle wastage in humans: survivin and checkpoint kinase 1. These genes are highly active in burrowing frogs that survive dormancy without suffering significant muscle damage.
A study by Dr. Y. Kirk Lin and his team found that tree frog calls emitted from drains had greater intensity and duration than natural habitats. This unique adaptation allows the frogs to boost their mating chances in urban environments.
A study by NUS researchers found that the Chiromantis hansenae treefrog exhibits unusual parental care behavior to increase offspring survival. This behavior is crucial for preventing egg desiccation and buffering environmental pressures.
A new treatment option has been discovered that could protect frogs in zoos from a deadly fungal infection, reducing the reliance on often-toxic itraconazole. Amphotericin B is shown to be less toxic than itraconazole and can be combined with itraconazole for effective treatment.
Researchers develop tools to help land managers and biologists identify areas where fish removal can protect amphibians from climate-induced habitat loss and predation. New hydrologic models and remote-sensing techniques can be used to map wetlands and evaluate the effects of projected climate change.
Researchers at MU have found that a specific gene in Cabernet Sauvignon grapevines contributes to its susceptibility to powdery mildew. This discovery could lead to breeding more resistant grapevines and potentially developing immunities for other crop plants.
A new method allows scientists to determine a frog's susceptibility to disease by analyzing its protective mucus layer. The technique can help reduce the risk of disease in endangered amphibians, enabling successful reintroduction into the wild.
Scientists discovered that species with germ plasm, a cell lineage responsible for producing gametes, evolve faster than those without. This accelerated rate of evolution leads to 'explosive radiations' of species and challenges traditional views on the process.
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.
Researchers found that bats detect water ripples created by male túngara frogs' calls, which aids in hunting. The discovery sheds light on an evolutionary arms race between frogs and bats.
Research reveals frog calls create ripples used by rival males to assess competition, but also detectors for predators like frog-eating bats. The study shows how complex communication can have costs and benefits through different sensory channels.
Research reveals that male dyeing poison frogs prefer to deposit their tadpoles in already occupied pools with larger conspecific larvae, despite high cannibalism risk. This unusual decision may be a gamble for frog fathers, weighing stable conditions against potential predation.
A study published in ZooKeys found up to 11 species among populations previously considered two widespread treefrog species. The genetic variation of dozens of Amazonian populations across six countries revealed a large amount of cryptic diversity, with four new species formally described.
A new study published in Conservation Biology found that a deadly fungus is the primary cause of rapid frog population declines in the Andes mountains. The fungus, Batrachochytrium dendrobatidis, has led to the decline or extinction of 200 frog species worldwide.
Scientists confirm the extinction of Darwin's frogs caused by chytridiomycosis, a fungal disease affecting amphibians. Conservation efforts are crucial to protect the remaining species, emphasizing the importance of preserving biodiversity.
A 10-year study on national wildlife refuges found frog abnormalities at less than 2% overall rate, but higher rates in specific 'hotspots'. The study suggests that these hotspots have local causes and can recover over time.
A study found that green poison-dart frogs vary their mating calls according to the availability of potential mates, adjusting their behavior to balance the risk of predation and securing a mate. In certain contexts, green males appear more conspicuous to females than red males, but less visible to predators.
New research finds that early-life exposure to atrazine increases frog mortality when challenged with a chytrid fungus, a pathogen implicated in worldwide amphibian declines. This study suggests that reducing early-life exposure to atrazine could reduce the risk of mortality from fungal disease in frogs.
A toxic factor released by a deadly frog-killing fungus disables the amphibian immune response, preventing conventional lymphocyte activation. The fungus's ability to inhibit cell growth in cancerous cells suggests potential new treatments.
Researchers found that a fungus, Batrachochytrium dendrobatidis, blocks the adaptive immune response in amphibians, allowing it to survive. The study suggests that the fungus targets a conserved vulnerability shared by both amphibian and mammalian lymphocytes.
Researchers from Brown University recruited frogs from the fair and compared their jumps to those in the lab. Most professional and rental frogs outperformed lab frogs, revealing a non-linear relationship between sample size and jump distance.
Researchers from Brown University traveled to Calaveras County to study the Guinness Book of World Records' top frog jumper, Rosie the Ribeter. They found that bullfrogs at the Jubilee surpassed the old research-grade mark of 1.3 meters a striking 58 percent of the time, with jumps reaching up to 2.2 meters.
The torrent frog's superior attachment abilities enable it to securely attach to extremely wet, steep, and rough surfaces. Researchers discovered that the frog uses its toes, belly, and thighs to adhere to the surface, with increased use of these areas on steeper slopes.
Research in Missouri ponds suggests that chytrid fungus may also infect invertebrates like insects, providing a new clue to its ecology and transmission. The study found that ponds with chytrid were more similar in certain measures, indicating alternative hosts or reservoirs for the fungus.
Three new species of Oreophryne frogs are described from Papua New Guinea, with total body lengths of around 20 mm. The discovery brings the number of Oreophryne species reported from the north-coast region to seven, with many more remaining to be described.
Scientists used X-rays to determine that Gardiner's frogs use their mouth cavity and tissue to transmit sound to their inner ears. The frogs' unique auditory system allows them to hear other frogs despite lacking a traditional middle ear.
In a study of gray tree frogs, females preferred calls that were longer and more frequent, which is a challenging task. The findings support the multitasking hypothesis, suggesting that high-quality males can produce multiple signals at once.
A Pitt-led study found that early exposure to insecticides increases amphibian tolerance to those same insecticides later in life. The researchers also discovered that low-level carbaryl exposure stimulates the production of a key enzyme, making tadpoles more tolerant to lethal doses.
Researchers have found pesticides commonly used in California's agricultural regions contaminating Pacific Tree Frogs in remote mountain areas, including national parks. The detection of pyraclostrobin, tebuconazole, and simazine highlights the potential long-term impact on biodiversity.
A new technology allows for real-time acoustic recording and species identification in remote locations, providing reliable long-term data on tropical species. The system has been tested in Puerto Rico and Costa Rica, enabling the analysis of over 1 million recordings and supporting conservation efforts.
Biologists discovered that female túngara frogs can be tricked into perceiving an unattractive call as attractive when a robotic frog adds a delayed visual cue. This study demonstrates how evolution may create complex traits by combining simpler ones, similar to how adding white noise improves human perception of sounds.
The Hula painted frog, declared extinct by the IUCN in 1996, has been rediscovered in Israel with unique genetic and morphological characteristics. The species' revival suggests a potential future for conservation efforts to restore its habitat.
Malaysia's oil palm plantations are causing threatened forest frogs to disappear, paving the way for common species to move in. The study highlights the devastating impact of habitat loss on biodiversity, with amphibians being the most threatened vertebrates globally.
A study found that Cuban tree frog chorusing impairs the acoustic behavior of green tree frogs, causing them to double their call rate. The researchers suggest this may come at a cost, diverting energy away from essential functions.
In a surprise twist, female strawberry poison frogs in Costa Rica prioritize the nearest singing male over physical appearance and vocal quality. The research found that females fail to discriminate between different call rates or frequencies, instead opting for the closest speaker.
Two studies by the University of Pittsburgh researchers found that wood frogs living near agricultural fields are resistant to chlorpyrifos and other insecticides. This increased resistance may be an adaptation to frequent exposure to pesticides, which can harm amphibian populations.
New scientific studies reveal the negative impact of invasive European buckthorn on Midwestern frog populations and altered mammal distributions. The plant's toxic emodin compound disrupts amphibian development, while its presence attracts carnivores like coyotes and raccoons.
A new study reveals that the Mediterranean anuran frog Rana iberica inhabits cave-like habitats, with all life stages observed. The frog's use of artificial subterranean habitats has important implications for its conservation, particularly in light of climate change.