Articles tagged with Frogs
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A study published in the Journal of Evolutionary Biology reveals that hundreds of male frog species undergo temporary color changes during their breeding season. These color changes serve as a signal to other males, indicating which frogs are suitable partners and improving chances of successful pairings.
A new study reveals that severe Perkinsea infections (SPI) is the third most common infectious disease of frogs in North America. Mass mortalities caused by SPI resulted in up to 95% tadpole population deaths, further jeopardizing frog populations.
New research reveals that true frogs' rapid global dispersal was not associated with an increase in net-diversification, contradicting long-held scientific expectations. The study found that the origin of these frogs was Indochina, and their diversification occurred over millions of years through a steady accumulation of species.
A study discovered how poison-dart frogs avoid self-intoxication despite storing toxic batrachotoxin in their skin. The key finding involves a specific amino acid replacement that confers resistance, allowing adult frogs to store over 1 mg of toxin.
A study led by Penn State researchers found that wood frog populations are more sensitive to changes in temperature or temperature interacting with precipitation than to changes in precipitation alone. This suggests that sensitivity to climate change cannot be predicted solely by knowing locations within the species' climate envelope.
The project aims to understand the evolution of frog eyes using genomic, morphological, physiological, and spectrophotometric data. Researchers will study how differences in habitat affect eye development and function in frogs, providing insight into vision evolution across life history transitions.
Researchers have discovered three new tiny frog species in Peru's Pui Pui Protected Forest, expanding the total number of new species found to five. The newly discovered frogs are part of the diverse genus Pristimantis and exhibit unique reproductive adaptations.
Researchers found that disrupting gut microbes in tadpoles affects adult frogs' ability to fight parasitic infections. A healthy bacterial community may confer protection against diseases later in life. The study's findings have implications for understanding the immune systems of mammals and humans.
Biologists found that disrupting the gut and skin bacterial communities of tadpoles later affects adult frogs' ability to fight parasitic gut worms. Preventing early-life disruptions might confer protection against diseases in adulthood, with potential applicability to understanding immune systems in mammals and humans.
A new study by Oregon State University researchers found that American bullfrog embryos can learn about predators while still in the egg, developing faster and hiding more when exposed to predator signals. This allows them to avoid becoming vulnerable prey, making it harder to control their spread.
Kyle O'Connell, a fifth-year Ph.D. student at UTA, received a $19,695 NSF Doctoral Dissertation Improvement Grants award to support his research on speciation in Sumatra using parachuting frogs. His project aims to test hypotheses about the formation of new species through genetic and genomic data analysis.
A new study reveals that a mass extinction 66 million years ago sparked an explosion of new frog species on different continents. The research, compiled by scientists from the University of Texas at Austin and other institutions, provides the most accurate frog family tree to date.
A new study reveals that most frog species descended from just three lineages that survived the mass extinction event, with rapid radiation occurring due to available environmental niches. The loss of dinosaurs led to the rise of trees and flowering plants, which in turn favored the evolution of frogs.
A new study has found that the mass extinction event that wiped out dinosaurs simultaneously led to the evolution of three major lineages of modern frogs, which make up about 88% of living species. This finding suggests that the survivors filled up new ecological niches after the extinction event, resulting in the rapid diversification...
A new study reveals that mountain lions are afraid of humans and flee when they hear our voices. The findings show that pumas take longer to return to their kills after hearing people, reducing their feeding time by about half. This is significant as it can have implications for their well-being in human-dominated landscapes.
Research found that cultural upbringing affects choice of prestige versus performance; Chinese preferred top-ranked college despite below-average grades, while European Americans prioritized above-average grades at a lower-ranked school. Cultural factors play a significant role in decision-making.
Researchers discovered that Cope's gray treefrogs use comodulation in background noise to pick out high-quality male calls. This finding has implications for human hearing and could lead to better hearing aids and speech recognition systems.
The study aims to determine the factors influencing frog survival and persistence in the wild. The release trial will help pave the way for successful reintroduction programs, as researchers monitor the frogs' behavior, dispersal, and disease resistance.
A new species of frog has been discovered in the Neotropics, featuring transparent skin that allows its heart to be visible. The species, Hyalinobatrachium yaku, is characterized by dark green spots on its head and body, and a unique call. Its distribution is uncertain due to its small size and habitat destruction.
Tadpoles are highly attracted to adult frogs and try to mount them to escape their siblings. The study's findings have implications for understanding begging behaviors in poison frogs and parent-offspring conflicts in amphibians.
The Digital Life project has released 15 three-dimensional models of live frogs, including several endangered species, to raise awareness about their vulnerability to ecological threats. The project aims to promote conservation, education, and science by showcasing the extraordinary beauty and diversity of these animals.
Researchers have identified a frog peptide, urumin, that can destroy many strains of human flu and protect mice against infection. The peptide targets the hemagglutinin protein on the virus, destabilizing it and killing it.
Researchers have discovered a frog-derived peptide, urumin, that specifically targets the H1 strain of influenza viruses. Urumin was found to disrupt the integrity of flu viruses without harming mammalian cells, making it a promising lead for antiviral drug discovery.
A new study finds that tropical lowland frogs are more vulnerable to climate change due to their limited ability to tolerate high temperatures. In contrast, high-elevation species may be better buffered against temperature increases.
Researchers observed glassfrogs sitting on their eggs for up to five hours after laying them, absorbing water and hydrating the jelly-coated embryos. The study found that every species of glassfrog cares for its eggs, with mothers tending to theirs immediately after laying and fathers taking over later.
A new species of rainfrog, the Ecuadorian rainfrog (Pristimantis ecuadorensis), has been documented in Ecuador's cloud forests. The discovery highlights the region's high biodiversity and emphasizes the need for conservation efforts to protect this newly identified species.
A new amphibian species, Pristimantis attenboroughi, has been formally described from the Peruvian Andes, with characteristics including pale to dark gray coloration and distinct stripes. The species is considered Near Threatened due to habitat loss and climate change, highlighting the need for conservation efforts in protected areas.
A new study examines neonicotinoid pesticides' effect on wood frog development, finding slight delays that may not be detrimental. Additional studies are needed to investigate the indirect effects of these pesticides on amphibian populations.
Researchers discovered frogs can distinguish color in extreme darkness, making it crucial for finding escape routes. Frogs use their color vision to select food in low-light conditions, unlike humans.
In a study, male Allobates femoralis frogs became cannibals when they took over new territories, eating all clutches to ensure only their own offspring survived. This behavior was linked to territorial status, rather than sexual motivation.
Scientists used DNA sequences to determine the evolutionary history of Asian Horned Frogs, discovering many new species and reestimating their family's age. The results suggest that scientists may have overestimated the age of many frog families by up to 35%.
Scientists from India have discovered seven new frog species in the Western Ghats biodiversity hotspot, with four being miniature-sized and among the smallest known frogs. The discovery highlights the high diversity of Night Frogs in the region, particularly in diminutive forms.
Researchers at Wits University have discovered that puff adders use a unique strategy called 'lingual luring' to attract and catch amphibian prey. By extending their tongues for up to 30 seconds, puff adders increase the odds of catching their prey within striking range.
A new study reveals that frogs' tongues are covered in a unique reversible saliva that changes viscosity during capture and retraction. The combination of this saliva with a super soft tongue allows for an incredible 50 times greater work of adhesion, making it a key factor in the frog's ability to hang onto its next meal.
A comprehensive review of Bufonidae family compounds reveals their largely unexplored potential for new drug discovery. The study highlights the critical need for conservation efforts due to declining amphibian populations.
A new study adds 25 frog species to the known fauna of Mount Oku, Cameroon, highlighting a staggering 48% of the amphibians as threatened with extinction. The researchers also review the region's conservation efforts and identify key threats such as forest loss, climate change, and diseases.
Researchers have discovered that a common species of Asian tree frog (Hyla japonica) may be two separate species, with distinct evolutionary relationships between East and West Japan. The study's findings could lead to reassignment of the species' scientific name and shed light on the historical mystery surrounding its discovery.
Research found road salt reduces female frogs by 10%, affecting population viability, while maple leaf litter has no impact. The study suggests a masculinizing effect of sodium in salt on tadpoles, potentially triggering sex reversal during development.
Researchers found that the 'song' attributed to the bushmaster was actually the call of large tree frogs living in hollow trunks. The discovery of two new frog species sheds light on the origins of this myth and highlights the importance of collaboration in scientific research.
Researchers found that amphibian larvae increase their vegetable consumption during heat waves, leading to a reduction in carnivorous diet effectiveness. This adaptability may become common among species living in continental environments as heat waves intensify due to climate change.
A team of researchers discovered that the tiny yellow-striped Amazonian frog has a special skin chemical that allows it to live comfortably among leaf-cutting ants. The frogs' skin extracts mimic the ants' own chemical signals, preventing attacks and enabling coexistence.
Researchers found that three frog species in the protected Wet Tropics of Queensland UNESCO World Heritage Area might have sufficient time to conserve before extinction due to climate change. The study suggests that conservation managers could intervene successfully with translocation programs.
A new rare ant species, Lenomyrmex hoelldobleri, has been discovered in the stomach of a Little Devil poison frog in Ecuador. The ant is the seventh known species in its rarely collected Neotropical genus and features a slender elongate mouthpart.
Researchers studied axolotl embryos and found unusual bursts in gene expression that could aid understanding of limb regeneration. This knowledge may lead to new insights into human regenerative medicine and the development of therapies.
Researchers discovered cane toads can respond to mating calls up to 120m away, bringing in more potential mates than other species. Female cane toads are less responsive, requiring closer proximity to discern complex details about potential partners.
A new species of rain frog, named Sleeping beauty rain frog, has been discovered in the Peruvian central Andes. The frog features bright red coloration on its groins, shanks, and thighs, distinguishing it from other related frogs.
Stowaway frogs being stopped by border security reduces the risk of introduction of new diseases by up to 50%. Biosecurity measures are crucial in preventing the spread of emerging diseases that have devastated native frog populations worldwide.
Released green and golden bell frogs in created ponds experienced lower vegetation diversity, resulting in reduced nutritional resources. The frogs also had a higher proportion of chytrid fungus, a pathogen affecting reproductive function.
A recent study by Hiroshima University scientists found Japanese tadpoles can live and grow in natural hot springs with water temperatures up to 46.1°C. This unique adaptation may allow the species to thrive on small volcanic islands with limited fresh water sources.
Some frog species have moved to land to secure mating opportunities away from rival males. This strategy allows males to protect their genetic legacy, as found in tropical frog species that hide while breeding.
Researchers discovered that some frog species hide eggs on land to reduce competition from other males, leading to smaller testes in males with terrestrial reproductive modes. This finding sheds light on evolutionary forces driving diversity and provides insights for conservationists.
A new species of rain frog, Pristimantis prometeii, has been discovered in southwestern Ecuador and named after the Greek hero Prometheus. The frog grows to 2-3 cm and is part of a group of directly developing frogs that do not have an aquatic tadpole stage.
Researchers found that chorus frogs now form hybrids across a broader area of Louisiana and Mississippi, with the hybrid zone expanding over time. The study's use of 40-year-old tissue samples preserved at the LSU Museum of Natural Science highlights the importance of museum collections in understanding biodiversity and speciation.
Two studies suggest that frogs' ability to withstand high temperatures can help them survive disease outbreaks, such as the deadly fungus Batrachochytrium dendrobatidis. Climate change may outpace deforestation as a habitat threat in tropics, and species with high thermal tolerance are less susceptible to infection.
Scientists have described a new mating position in the Bombay night frog, where males straddle over females' backs to release sperm without physical contact. This behavior is unique among anuran amphibians and has significant implications for understanding reproductive strategies.
Researchers from Museo de Zoología at Catholic University of Ecuador discovered two new species of rain frogs in the park, characterized by spiny appearance and direct-developing traits. The findings highlight the region's rich biodiversity and the need for further exploration of unexplored regions.
A new rain frog species, Pristimantis pluvialis, has been described from Amazonian Peru and the Amazonian foothills of the Andes. The discovery highlights the need for continued study of tropical regions to uncover new species.
A deadly fungus has been found to be threatening African frog species, with at least five species declining due to chytrid and habitat destruction. Climate change may also be exacerbating the issue.
A new study from Wake Forest University found that testosterone influences the evolution of a waving display in male Bornean rock frogs. The research revealed that testosterone increases foot-flagging behavior and changes how hormones act on leg muscles, similar to the change seen in vocal croaks.
Hearing socially meaningful sounds can modify ear structure to better detect those sounds, improving hearing in green treefrogs. The study's findings have implications for elderly people with limited social interaction or prisoners in solitary confinement.