Researchers used single-cell and spatial transcriptomics to investigate cell type evolution in reptiles and amphibians, revealing diverse cell types and regions that evolved independently. The studies also highlighted the importance of data sharing and the power of accumulating single-cell data from multiple species for evolutionary co...
A new study reveals that four living amphibian clades, including the dominant Plethodontidae family of lungless salamanders, develop lungs as embryos but lose them as adults. This finding sheds light on the evolution of lung loss over millions of years and suggests that losing lungs may have enabled their remarkable evolutionary success.
Researchers studied 28 clades with 1,437 species in subtropical East Asian caves to understand biotic colonization. They found that climate changes and forest evolution drove colonization over time.
A study by the University of Göttingen and Malagasy universities found that vanilla plantations on fallow land have similar yields to those in forests while increasing biodiversity. This sustainable approach helps smallholder farmers secure their income, highlighting a win-win opportunity for both economy and conservation.
A team of US scientists proposes a 'Western Rewilding Network' to conserve and restore ecosystems in the region. The plan aims to reintroduce keystone species like gray wolves and North American beavers to promote biodiversity and ecosystem health.
Researchers from the University of Tsukuba discovered that changes in the extracellular environment during metamorphosis and body growth enable newt muscle fibers to dedifferentiate and contribute to limb regeneration. This process is crucial for newts' ability to regenerate limbs throughout their life cycle.
A study published in Scientific Reports found that amphibian and reptile invasions cost the global economy at least $17.0 billion between 1986 and 2020. The majority of costs were attributed to American bullfrog and brown tree snake invasions, highlighting the need for effective policies to limit future invasions.
Large carnivore populations show genuine improvement in extinction risk when protected by international legislation and have controlled hunting plans. Marine mammals are most likely to recover, while rays and sharks face significant threats.
A team of researchers, led by UTA biologist Eric Smith, has identified six new species of miniature frogs in Mexico. These tiny amphibians have evolved to retain juvenile characteristics, limiting their adult growth and size.
Scientists have discovered evidence that yunnanozoans are the oldest known stem vertebrates, with cellular cartilages in the pharynx similar to those found in modern vertebrates. The team's findings support the evolutionary placement of yunnanozoans at the very basal part of the vertebrate tree of life.
A study reveals over 50 common toads in UK woodlands, defying expectations of their terrestrial lifestyle. The discovery highlights the importance of tree cavities as a habitat for amphibians and encourages conservation efforts.
A new study reveals that 41% of Vietnam's amphibian species are threatened with extinction, with many having limited distribution ranges and no conservation data available. The researchers highlight the importance of implementing targeted conservation efforts, including ex-situ programs and protected areas, to address these gaps.
A comprehensive study reveals that turtles, crocodilians, and salamanders have low aging rates and extended lifespans. Protective phenotypes like hard shells contribute to slower aging, with some species experiencing 'negligible aging' or lack of demographic aging.
Researchers investigated aging in turtle species, finding surprisingly little evidence of senescence. Protective adaptations and life history strategies contribute to the negligible aging in long-lived species. Some turtle and tortoise species may even reduce physical aging in response to better environmental conditions.
Non-traditional pets like rodents, poultry, and reptiles can carry zoonotic pathogens that spread between animals and people. The study highlights the importance of preventing transmission through risk factors such as direct or indirect contact with infected animals.
Researchers studied miniature frogs from the genus Brachycephalus and found that their small vestibular system prevents them from maintaining balance. The tiny frogs can jump but struggle to control their trajectory mid-leap.
Researchers discovered that salamanders rely on aerial postures similar to skydivers to slow and direct their descent. These 'parachuting' animals use fine-scale control to maintain upright body postures and execute banking turns.
An international study identified 562 terrestrial vertebrate species as 'lost', meaning they haven't been seen in over 50 years. The majority of these lost species are found in megadiverse tropical countries and are considered potentially extinct.
A team of researchers has successfully treated damaged pig hearts with cardiac progenitor cells, demonstrating the formation of new cardiac tissue and improved cardiac function. The treatment could potentially be used to treat patients with serious heart failure, particularly older patients with coexisting conditions.
Researchers from CIIDIR-Oaxaca Amphibian Ecology Laboratory studied the consumption of tadpoles in stone soup, revealing its significance as an indicator of water health and the species' vulnerability to overfishing. The study highlights the importance of accurately documenting human interaction with amphibians.
A Dartmouth study using advanced recording technology reveals that females prefer lower frequency songs with low variance, while males time their songs to follow neighbors. The research shows how chorus composition and individual songs impact mating in wood frogs.
Researchers at Gauhati University studied roadkill on a 64-kilometer stretch of National Highway 715 in India's Kaziranga-Karbi Anglong Landscape. They found dramatic mortality rates among frogs, toads, snakes, and lizards, with over 6000 animals killed annually.
A new study found that native species in southwestern Washington floodplains adapt to bullfrogs and sunfish by changing their feeding strategies. The researchers analyzed carbon and nitrogen stable isotopes in predators and prey to understand food webs, finding that some species shifted towards more abundant food sources.
Scientists have developed a method using DNA from blood meals of blood-sucking leeches to survey vertebrate species in large areas. The study, led by Harvard researchers, identified 86 vertebrate species in the reserve, including near-threatened and threatened species.
Scientists from around the world gather to discuss various amphibian and reptile diseases, with a focus on conservation and management strategies. The conference aims to identify solutions to mitigate the impact of these diseases on herpetofauna populations, which are currently experiencing alarming extinction rates.
A new study found that red-backed salamanders have limited ability to adjust to warming climates, with depressed metabolic rates in warmer conditions. This may lead to energy deficits and negatively impact individual growth and reproductive success.
The Chengjiang Biota, an ancient group of animal fossils, has been found to inhabit a shallow-marine, nutrient-rich delta environment. This discovery sheds new light on the possible causal factors for the Cambrian Explosion and how early animals adapted to stressful conditions.
A series of studies on endangered species near the China-Vietnam border highlights the urgent need for coordinated approaches to prevent biodiversity loss. Climate change is expected to significantly impact habitats and species distributions, emphasizing the importance of transboundary conservation measures.
University of Ottawa scientists, collaborating with Yale researchers, have discovered the hidden influence of a single variation between histone H3.1 and H3.3 proteins. This finding could expand our understanding of DNA damage repair and its role in diseases like cancers and sponastrine dysplasia.
Researchers discovered that tadpoles raised without helpful microbes can't stand the heat, and are five times more likely to die in high temperatures. The team also found that microbes help tadpoles deal with heat by regulating their metabolisms and energy production.
Researchers developed a simple and efficient method for surveying amphibians using environmental DNA analysis, which can be conducted by anyone without specialist knowledge. This technique resolves issues with conventional methods such as capture and observational surveys, allowing for more accurate monitoring of amphibian habitats.
Researchers found chytrid infections were more common and intense at higher elevations, with the California red-legged frog being among the most infected. The disease was also more prevalent in Baja California, where 68% of surveyed animals had the fungus, compared to 15% in Southern California.
Researchers are using a salamander virus to predict the future of biodiversity amid a changing climate. The study aims to create better models to understand how climate change and infectious diseases interact, with potential implications for conserving species at risk of extinction.
Scientists have discovered more than 130,000 new RNA viruses using a new computer tool that analyzed 5.7 million biological samples collected globally. The discovery represents a tenfold increase in the number of viral RNA species described to date.
New research reveals that zoos and aquariums can prioritize evidence-based environmental enrichment to benefit a wider range of species. The study highlights the need for greater diversity in enrichment types and species researched, as well as more attention to social enrichment.
A massive fossil of the giant millipede Arthropleura has been discovered in Northumberland, England, revealing it was up to 2.7 meters long and weighed 50 kilograms. The find sheds new light on the animal's habitat and evolution, suggesting it preferred open woodland habitats near the coast.
A team of biologists and engineers created a robotic fish that scares mosquitofish away, altering its behavior and physiology. The study found that the mosquitofish showed fearful behaviors, weight loss, and reduced fertility when confronted with the robot.
A team of scientists has redefined indicators for biological diversity, analyzing ecosystem and species distribution. They found that areas with many species don't always have high biodiversity, and some protected areas may not be effectively conserving species and ecosystems.
A team of researchers proposes that endothermy in mammals and birds has a common ancestry and is much older than previously accepted. They found evidence of endothermy in early ancestors of modern birds and mammals, including Pelycosaurs and Pareiasaurs.
A team studied wildfire impacts on streams in parts of the Los Padres National Forest, finding that stream headwaters serve as refuges for aquatic species during fires and droughts. The study's findings suggest that protecting these areas is crucial for maintaining watershed resilience and biodiversity.
A new study published in Ecology Letters reveals a global decline in the resilience of vertebrate populations, with accelerating loss of ecological functions and services. The research found that cumulative effects of anthropogenic threats such as climate change, invasive species, habitat loss, and pollution are driving this loss.
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.
The discovery of two new species, a skink and a fish, sheds light on the variety of animals inhabiting North America during the Early Cretaceous Period. The findings confirm that North America had limited faunal diversity during this time, with many species similar to those found in other regions.
Researchers uncover two new species, a small lizard (Sciroseps pawhuskai) and a fish (Anomoeodus caddoi), from the Lower Cretaceous Holly Creek Formation in southwest Arkansas. The discovery provides valuable insights into the diversity of animals living during the Early Cretaceous Period.
A study on over 100 species found that climate change affects animal behavior, including changes in aggression, activity, and sociability. The researchers believe that behavioral changes can serve as a buffer for animals to avoid negative effects of environmental change.
The study reports 21 species of Pakistan's amphibians, highlighting the need for conservation strategies to control populations and address human-caused threats. Researchers propose an inclusive wildlife conservation approach incorporating poorly documented taxa like amphibians to maintain ecosystem health.
Researchers from China's Academy of Sciences propose a framework to determine ecological priorities across Mainland Southeast Asia by combining ecosystem services, ecological sensitivity, and biodiversity indicators. The proposed model identifies areas for protection based on overlapping hotspots of diversity, sensitivity, and service ...
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.
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 analyzed 1.4 million field observations and 73,000 museum records to find a strong correlation between species abundance in nature and their presence in museum collections. This method enables scientists to study species decline and estimate past abundances, providing insights into conservation efforts.
Researchers found that invasive shrubs absorb more sunlight and lower air temperatures on the forest floor, giving them a competitive advantage. This phenomenon may explain why invasive plants negatively impact bees, butterflies, and amphibians in forest understories.
A new species of wood lizard, Enyalioides feiruzae, has been described from the premontane forest of the Huallaga river basin in Peru. The lizard features stunning color variations and is believed to have established as a separate species due to geographical separation from a similar lizard.
A new study maps the location and intensity of key threats to terrestrial amphibians, birds, and mammals, identifying priority areas across the world. Agriculture and logging are pervasive in the tropics, while hunting and trapping is the most geographically widespread threat to mammals and birds.
The loss of threatened vertebrates may lead to varying consequences across different regions, with some losing up to 30% functional diversity. Unique species traits can make their loss more impactful, necessitating tailored conservation strategies for each biome.
Researchers discover that gastrin-releasing peptide (GRP) is widely conserved among vertebrates, but the NMB/bombesin system has diversified in some lineages. GRP has evolved independently from a single ancestral homologue and plays a role in regulating energy intake and expenditure in both amphibians and mammals.
Researchers completed the first genetic sequencing of a Brazilian snake's genome, revealing that most toxin genes likely arose from existing functions in ancestral species. The study identified markers for comparing toxin genes with non-toxic 'ancestral' genes, shedding light on the evolution of venom production.
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.
Research reveals eastern spadefoot toads spend more time above ground than previously believed, contradicting a century-old misconception. The study used spotlighting to detect large numbers of the endangered species in various habitats.
Researchers found that larger amphibian females lay more eggs, reducing extinction risk, while large mammals bear fewer offspring per birth. This challenges the long-held theory that larger species are more at risk of extinction.