A new study finds that mountain-dwelling species may move to higher elevations to escape human pressure, which could reduce their extinction risk. The research suggests that these high-elevation areas tend to have more intact land for species due to reduced human activity.
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 new study warns of amphibian conservation shortfalls due to climate change, highlighting the need for intelligent manipulation and management of water resources. Researchers found that extending temporary pool availability, restoring natural drying patterns, and releasing environmental flows can improve breeding outcomes.
Scientists at the University of Tennessee Institute of Agriculture have discovered that host contact rates and habitat structure significantly impact the transmission of Bsal among eastern newts. Adding habitat complexity and reducing population density can curtail transmission rates, similar to COVID-19 mitigation strategies.
A new study predicts that climate change risks to biodiversity will surge suddenly, with up to 15% of ecosystems facing irreversible damage by 2100. This is due to a 'series of cliff edges' where species face conditions they've never experienced before, leading to extinction.
A reanalysis of a global amphibian disease study found the main conclusions lack evidence and are unreproducible. The research review previously linked the chytrid fungus to hundreds of amphibian declines, but the new analysis identified data deficiencies and methodological issues.
Researchers at Karolinska Institutet have discovered a detailed blueprint for the development of the human cortex in the ancient lamprey brain, shifting its origin to over 500 million years ago.
A study by the UPV/EHU-University of the Basque Country found that microplastics cause mortality in detritivores and reduce tadpole growth. Microplastics also attach to periphyton, altering ecosystem productivity, and are ingested by organisms, highlighting their potential impact on freshwater ecosystems.
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.
The study reveals that species richness is largely determined by the evolution of animal niches and their subsequent dispersal across the continent. The researchers used models to calculate species richness in South America and found a clear pattern following natural habitats or vegetation biomes.
Researchers at Binghamton University found that road salt and invasive species can harm native amphibians, with non-native African clawed frogs showing greater tolerance to chemical changes. This study highlights the need for better environmental management strategies to protect natural ecosystems.
Biologists from Bayreuth investigate the role of Mauthner cells in fish and amphibian species, revealing a strong hierarchical dependence on these cells for essential functions. The researchers discovered that Mauthner cells remain functional without their cell bodies, contradicting widespread assumptions about nervous system hierarchies.
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.
Scientists have identified a molecular mechanism that enables amphibians and fish to change their color by communicating between the actin and microtubule networks. The discovery reveals potential evolutionary paths and highlights the importance of motor proteins adapting to different cytoskeleton systems.
Researchers identified a molecular mechanism for communication between microtubule and actin networks, enabling color change in amphibians and fish. A theoretical model supports the findings, highlighting the regulatory efficiency of cytoskeletal interactions.
A new study suggests that accounting for climate change in conservation planning can effectively protect biodiversity, but may come at a higher cost. Researchers analyzed 1,460 species and found that unless climate change impacts are considered, 14% would not have a viable place to live.
Researchers found that birds and mammals have encapsulated Golgi tendon organs set directly at the muscle-tendon junction, detecting tension in precise areas. This allowed for controlled motion and a selective advantage that conserves energy.
A global study on the impacts of human land-use found that predators and small ectotherms are disproportionately affected, with abundance reductions of 25-50% compared to natural habitats. The researchers analyzed over 1 million records from 80 countries and 25,000 species.
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.
A recent study analyzed the gut microbiomes of over 900 species, revealing that birds and bats have surprisingly similar gut bacteria, contrary to expectations. The researchers believe that flying may be the reason for this unique relationship, as it would allow animals to allocate resources more efficiently.
Angola's rich biodiversity is under threat due to illegal hunting and bushmeat trade. The study found that despite existing legislation, there is no effective law enforcement mechanism to control the trade.
A study in Nature Climate Change predicts Madagascar's entire eastern rainforest habitat will be eliminated by 2070 unless strict protections are implemented. The research identifies priority areas for protection, highlighting the critical role of ruffed lemurs as seed dispersers and their sensitivity to habitat degradation.
A research team has uncovered four new extinct turtle species from the Arlington Archosaur Site in Texas, including a river turtle and the oldest side-necked turtle found in North America. The discovery suggests extensive intercontinental migration of turtles during this time.
A second ancient lungfish has been discovered in Africa, adding to the understanding of evolving aquatic life forms over 400 million years ago. The new genus, Isityumzi mlomomde, was found at high latitudes and represents a significant finding for the study of Western Gondwana.
A recent study found that biodiversity in the Camargue has substantially changed, with declines in grasshoppers, crickets, and amphibians detected. The research also revealed increases in vascular plants and some bird species, but highlights the failure of current protection measures to safeguard certain taxa.
Researchers discovered a pattern of mechanisms improving retinal oxygen supply that evolved with enhanced vision in all bony vertebrates. The findings add to our understanding of the evolution of the eye, highlighting its dynamic morphology and relationship with retinal oxygen supply.
Research on zoo animals reveals a bias towards 'popular' mammal species, such as chimpanzees, with globally more fish and birds in zoos. The study suggests that zoos offer unique opportunities to study underrepresented species, contributing valuable insights into animal health, conservation, and welfare.
Researchers have identified the oldest known ortholog of the ion channel defective in cystic fibrosis, found in ancient sea lampreys approximately 450 million years ago. The protein diverges significantly from its human counterpart and has unique functional properties, suggesting a distinct evolutionary history.
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 long-term study found that five consecutive years of drought effectively ended copperhead snakes' reproductive output. Snakes produced significantly fewer offspring during and after the drought, with no pregnant females recorded in the year following the drought's end.
A 370-million-year-old tetrapod, Parmastega aelidae, had a skull resembling a crocodile with eyes above its head, indicating it could keep an eye on prey while swimming. It used slender needle-like teeth and elastic jaws to snatch prey before crushing it with massive fangs.
A newly discovered tetrapod, Parmastega aelidae, provides insight into the earliest stages of evolution from fish to amphibians. The fossil, dating back 372 million years, exhibits fish-like characteristics and may have never left the water.
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.
Researchers found that skin in mice expresses its own photoreceptors using neuroposin, synchronizing circadian clocks to light-dark cycles independently of eyes or brain. This discovery has implications for understanding skin physiology and potentially enhancing medical practice.
The study found that at least 5,579 animals are currently being traded globally, with impacts tend to be higher among certain groups and in threatened species. The researchers predict that up to 8,775 species could soon be at risk of extinction due to future commodification.
Researchers have found interactions between multiple genetic lineages of the amphibian-killing chytrid fungus, including a previously unknown lineage widespread in Southeast Asia. This discovery suggests that genetic recombinations can create more virulent hybrids, posing additional threats to amphibians and conservation efforts.
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.
Two companion papers reveal that mountain regions are hotspots of biodiversity, with tropical mountains hosting more than 85% of the world's species. The high level of biodiversity is linked to unique climate conditions and geological dynamics.
This special issue highlights von Humboldt's lasting legacy on mountain ecology and environment. Research focuses on species richness, biodiversity evolution, and soil microbial communities in response to climate change.
A study published in PLOS Biology has identified conserved proteins and pathways in four major animal models and humans, revealing unique sets of proteins mutated in human disease states. This discovery allows researchers to select the most appropriate model systems for studying cardiac development and investigating diseases.
Researchers found that streamflow variability can negatively affect the survival of salamanders as they transition from larvae to adults. The study suggests that climate change will exacerbate this issue, highlighting the need for long-term monitoring and protection of vulnerable headwater ecosystems.
Scientists have found that the blue-banded sea snake uses a vascular network in its head to absorb oxygen from the surrounding water, allowing it to stay submerged for longer periods. This unique adaptation enables the snake to thrive in tropical waters with minimal surface exposure.
The study found that melanosome size and geometry vary between species and organs within a species. Melanosomes from fossils differ significantly in size, geometry, and chemistry depending on body region, suggesting a role for melanosomes in metal metabolism and providing new insights into extinct vertebrate anatomy.
Researchers found ancient parasite eggs in human coprolites at the Must Farm settlement, indicating that inhabitants were infected by eating raw aquatic animals. The discovery provides new insights into the intestinal diseases of prehistoric Britain and their possible connections to modern food trends.
A study warns that large areas of tropics could vanish within 80 years if global dietary habits don't change, leading to widespread species loss. Replacing animal products with plant-based alternatives can reduce agricultural land use by 11%.
A new study found that naproxen's degradation products are up to 15 times more toxic to southern toad larvae than the medication itself. Researchers emphasized the importance of considering the full life cycle of medications when evaluating their environmental impact.
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.
A UBC-led study found that Indigenous-managed lands have the highest levels of biodiversity worldwide, with even protected areas coming in second. The research highlights the importance of collaborating with Indigenous communities to protect species and conserving biodiversity beyond traditional conservation boundaries.
Tracy Langkilde has been recognized for her research on how animals adapt to changes in their environments. She has studied the behavior of lizards towards fire ants and explored the impact of noise pollution on frogs' communication abilities.
A new study reveals that despite regulations, over 60,000 exotic animals are abandoned in Spain each year, causing significant harm to the environment. The researchers argue that improving biosafety measures, training buyers, and regulating importation can help reduce this problem.
Researchers at Oregon State University have developed a novel genomics-based method to detect the simultaneous presence of hundreds of organisms in a stream. The study used water sampling for environmental DNA, capturing biodiversity and ecosystem health data from hundreds of organisms in a single sample.
A new study discovers complex hyoid bones in a 165-million-year-old mammaliaform species, suggesting the evolution of a loose tongue in early mammals. The discovery sheds light on the evolutionary origins of hyolingual structures, which enable advanced food and liquid swallowing in modern mammals.
Scientists propose alternative biological concepts to combat fungal disease in aquatic organisms, including increasing host diversity, vaccination, probiotics, hyperparasitism, and using 'parasite eaters'. These methods aim to reduce environmental harm and promote sustainable aquaculture practices.
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.
A new developmental mechanism, interdigital cell death, shapes limbs through differential growth and ROS production. This mechanism is shared by all amniotes, including humans, and was triggered by high oxygen levels surrounding the embryo.
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.
Researchers at the University of Guelph discovered that meat-eating pitcher plants in Algonquin Park wetlands consume not just bugs but also young salamanders. The plants' digestive enzymes break down prey, which may help them obtain essential nutrients like nitrogen from poor bog soil.