A comprehensive census analysis has revealed a dramatic decline of 60% in caribou/reindeer numbers worldwide over the last three decades. Global warming and industrial development are identified as key drivers of this decline, affecting not only the animals but also human livelihoods in northern latitudes.
A Purdue University study found that animals make complex decisions about choosing mates, considering multiple factors beyond major histocompatibility complex (MHC) genes. Tail length also plays a role in reproductive success, with larger males being more likely to be chosen as sires.
A Purdue University study found that animals can easily access runway areas, increasing the likelihood of plane strikes. The study suggests enclosing airport perimeters with partially buried fencing and frequent maintenance to deter wildlife.
The US wildlife trade is plagued by a lack of coordination and regulation, leading to the importation of millions of animals each year. This can have devastating effects on native species, food supply chains, and human health, as evidenced by previous disease outbreaks such as monkeypox.
Researchers at Uppsala University and colleagues analyze fossil upper arm bones from ancient vertebrates, revealing two distinct life histories. Ichthyostega, a more terrestrial animal, undergoes significant changes in limb shape and muscle attachments as it grows, while Acanthostega remains aquatic with less dramatic transformations.
Calculations suggest low-oxygen dead zones in the ocean will expand significantly over the next century. Marine animals will need more oxygen to survive as carbon dioxide levels increase, exacerbating the effects of 'dead zones'.
Researchers at University College Dublin found that adding fish oil to the diet of cattle reduced methane emissions by affecting the gut bacteria. This discovery offers a targeted approach to mitigating methane's potent greenhouse gas effects.
Braunschweig Helmholtz researchers found that host genetic factors significantly impact the progression of influenza A virus infections. The study discovered strong differences in disease outcomes among mice with genetically identical immune systems, suggesting a genetic basis for varying responses to the flu virus.
Researchers discovered that the locust brain encodes turbulent plumes of odor molecules using surprisingly little neural machinery. The findings suggest a new theory on how animals smell, proposing that individual neurons preserve almost full information about precise temporal dynamics of odors.
Researchers developed compounds that inhibit an enzyme producing nitric oxide, a neurotransmitter that can damage brain tissue. The treatment was effective in preventing cerebral palsy in animal models, suggesting a potential preventive strategy for humans in the future.
Researchers have found that vitamin supplements composed of antioxidants beta carotene, vitamins C and E, and magnesium can prevent both temporary and permanent hearing loss in test animals exposed to loud noise. The supplements may also provide 'post-noise rescue' by protecting against cell death and permanent hearing loss days after ...
Researchers at the University of Chicago found that ground squirrels can reconnect with their siblings' smells after prolonged hibernation. This ability is crucial for survival and social bonding in these animals.
Researchers found that tree-dwelling lizards have a unique escape mechanism: dropping their tails to distract predators. Without their tails, the lizards tumble backwards uncontrollably, suggesting a significant ecological cost for this life-saving adaptation.
Research on seamounts reveals that many animals are not exclusive to these underwater mountains and can be found in other deep-sea areas. The study identifies distinctive groups of corals and sponges, as well as sea cucumbers, which are rare or absent on other seafloor areas.
A Yale University study found that the biological costs of changing sexes are rarely sufficient to disfavor sex change, suggesting a possible explanation for its rarity among animals. Researchers built theoretical models and tested them using game theory, showing that only huge costs can disfavor sex change.
Tel Aviv University researchers have developed a program that analyzes animal behavior to understand and treat OCD. By comparing human behavior to animal rituals, the model identifies abnormal patterns and provides a tool for mental health practitioners. This innovative approach may motivate patients to correct their compulsive actions.
A comprehensive analysis confirms that Placozoans are the most primitive non-bilateral animals, with a genome that shares key tools for nervous system development. This challenges traditional views of animal evolution, placing Placozoans as the closest living surrogate to the ancestor of all animals.
A recent study found that humans actively changed the coats of domestic animals through selective breeding, leading to diverse coat colors and patterns. The researchers discovered that domestic pigs with rare genetic mutations had altered proteins, while wild pigs lacked such changes due to rapid selection by predators.
A recent study reveals that humans have actively selected for rare genetic mutations to change the coat color of domestic animals, such as pigs and dogs. This process has been ongoing for thousands of years, eliminating alternative explanations for coat color changes within domestic populations.
A recent study published in Frontiers in Ecology and the Environment reveals that polarized light pollution can trigger animal behaviors leading to injury and death. Artificial light sources can attract or repulse animals, causing them to migrate incorrectly, choose poor nesting sites, or become trapped by reflective surfaces.
Researchers have identified genes controlling snail shell handedness, similar to those used by humans to set up left-right asymmetry. These findings suggest that the same genetic pathway has been responsible for establishing left-right symmetry in animals for 500-650 million years.
Scientists have visualized individual neurons in rat brains that are activated during associative learning tasks, providing direct evidence of convergent activation. This finding sheds light on how the brain changes as a result of experience and has implications for understanding plasticity.
Researchers have discovered novel prion infectivity in white and brown fat tissues of mice, shedding new light on the pathogenesis of prion diseases. This finding may have significant implications for preventing prion infection in animals and humans, particularly in ruminants suspected of exposure to or infection with prions.
Marine biologists propose that animals learn the unique magnetic signature of their home area early in life and retain it to navigate back to their birthplace for reproduction. The theory suggests that magnetic imprinting helps animals distinguish their home location from others, allowing them to return years later.
Scientists discovered giant deep-sea single-celled organisms leaving complex tracks on the ocean floor near the Bahamas. The finding questions the fossil record and suggests that single-celled protists may have been the precursors to bilateral symmetry in animals.
Researchers reveal Tiktaalik roseae's internal head skeleton, showing key intermediate steps in the transformation of the skull that accompanied the shift to life on land. The study demonstrates that the gradual transition from aquatic to terrestrial lifestyles required significant changes in the head and neck structures.
Researchers found fossilized tracks of an aquatic creature, suggesting animals walked on legs at least 30 million years earlier than thought. The discovery pushes the timeline for complex life on Earth back to the Ediacaran period.
A billion-year-old history of microRNAs has been discovered in ancient animal lineages, including sponges and starlet sea anemones. This finding suggests that these tiny molecules have evolved rapidly across various species, potentially playing a key role in the emergence of multicellular life.
A recent study by University of Chicago researchers found that animals farmed for meat are the primary source of campylobacteriosis, a common food poisoning bug. The bacteria were commonly found in chicken and livestock, with 57% of cases linked to chicken consumption.
A study published in Aging Cell found that calorie restriction did not lower IGF-1 levels in humans, unlike in animals. However, strict vegans had significantly less circulating IGF-1, suggesting a correlation between protein intake and longevity.
Scientists have identified biomarkers in cattle urine that can indicate the presence and progression of Bovine Spongiform Encephalopathy disease. This discovery may lead to a urine-based test for detecting BSE in live animals, allowing for alternative surveillance procedures and improving breeding stock health.
Research reveals that elephant legs are much bendier than Shakespeare's depiction, with joints flexing significantly during locomotion. Studies also show that the animals' mobility range is comparable to that of trotting horses.
Researchers at Brookhaven National Laboratory found that vigabatrin induced satiety in obese animals, leading to significant weight loss and reduced food consumption. The study suggests that vigabatrin could potentially treat severe obesity, including binge eating patterns similar to those seen in cocaine dependency.
Researchers found that cyclic compression of muscles after intense exercise reduced swelling and muscle damage in a study using animals. The massaged muscles recovered an estimated 60% of strength and had fewer damaged muscle fibers compared to rested muscles.
Researchers at the Institute for Animal Health are developing complex models to understand how bluetongue virus spreads among livestock. By analyzing midge numbers, biting behavior, and weather patterns, they aim to provide farmers with critical information on when to move animals and implement best practices for controlling the spread...
Researchers at Johns Hopkins Medicine found that fruit flies use TRPA1 to sense single degree changes in the comfortable range, adapting to different temperatures through a multistep process. This discovery raises the possibility that mammals may also be able to sense small changes in internal body temperature.
A new study by conservation biologists from the University of California, Berkeley found that parks with public access have significantly lower populations of native carnivores such as coyotes and bobcats. The researchers believe that human disturbance may be driving these animals away from heavily visited areas.
Researchers discovered that mammalian clock proteins respond directly to light, similar to plant cryptochromes. In humans and animals, this response affects circadian rhythms differently than in mice, where missing cryptochromes lead to complete loss of rhythm behaviors.
Researchers discuss how noise affects marine mammals, including beaked whales and killer whales, as well as the impact of urbanization on bird communication. The study highlights various mechanisms animals use to compensate for elevated noise and explores the effects of sonar and other human sounds on marine and land animals.
A symposium in the Biological Bulletin highlights the powerful advantages of using gene catalogs to infer biological function in marine animals, including the sea urchin and tubeworm. By comparing their genomes with those of other organisms, researchers can gain new clues about how physiological systems evolved.
A new microfluidic device developed by Georgia Tech engineers can automatically position, image, determine the phenotype of and sort small animals such as Caenorhabditis elegans for genetic studies. The device achieves high accuracy at a rate of several hundred animals per hour, greatly reducing processing time and increasing throughput.
New research explores the evolutionary origins of the brain, shedding light on how complex synapse structures drove brain evolution. The study finds that sophisticated molecular processing of nerve impulses was key to developing animals with more complex behaviors.
Paleontologists have discovered fossilized burrows of tetrapods in Antarctica, dating back to the Early Triassic epoch. The burrows were created when sand poured into animal dens and hardened, preserving track marks and scratch marks from the animals' initial excavation.
Scientists at Harvard University have discovered that bdelloid rotifers can capture and incorporate genetic material from plants, fungi, bacteria, and animals into their genomes. This finding challenges traditional notions of sexual reproduction and may provide insight into the animals' ability to adapt to new environments.
An experimental drug, OSU-HDAC42, has blocked prostate cancer progression in mice with an aggressive form of the disease. The agent reactivates genes that normally protect against cancer, shifting tumor progression to a more benign direction.
Researchers at Beth Israel Deaconess Medical Center have identified a 'food-related clock' that can supersede the body's primary biological rhythms, enabling better coping with changes in time zones and nighttime schedules. By adjusting eating schedules, humans may be able to adapt more quickly to new time zones.
Research on caribou in West Greenland reveals that climate change is affecting not only the timing of plant growth but also the availability of nutritious food. This 'trophic mismatch' leads to reduced births and increased deaths among caribou calves, highlighting the need for conservation efforts to protect seasonal animals.
A study by Ashley J. W. Ward and colleagues found that groups of fish only follow leaders when a threshold number of fellow group members perform a particular behaviour, reducing the risk of non-adaptive following. This quorum response is also relevant to human decision-making.
The Yu Lab's large-scale imaging experiments found that neurons encode specific ways to identify animals based on gender, reproductive status, and genetic background. This research sheds light on how the nervous system processes sensory information to generate meaningful perception and behavioral output.
Researchers found over 10,500 dead animals along 11 miles of roads in Indiana, with nearly 95% being frogs and other amphibians. The study suggests that road-related death contributes to their decline, highlighting the need for mitigation structures like underpasses and fences.
A randomized controlled trial found that spending time with farm animals improved patients' self-efficacy and coping ability, particularly those with schizophrenia and long-lasting psychiatric symptoms. The study suggests that farm animal-assisted therapy may be a beneficial treatment option for individuals with mental health conditions.
Researchers at Wake Forest University found that environmental enrichment and increased social stress can reduce cocaine self-administration in monkeys. The study showed that subordinate animals, who experience more stress, consume more cocaine than dominant animals with improved living conditions.
The Nipah virus is a deadly brain and lung disease that spreads through contact with infected animals or contaminated food, particularly date palm sap and fruit bitten by bats. Researchers are working to identify transmission pathways and prevent further outbreaks.
A Hebrew U study has shown that humans can detect finer frequency differences than animals, using single neuron recordings in the auditory cortex. This suggests a unique neural representation of frequency in the human brain.
Prebiotic sugars have been shown to reduce Salmonella infection severity in animals, improving health and reducing economic losses. The study's findings suggest a potential solution to the growing problem of antibiotic resistance and foodborne illnesses.
Researchers have discovered that mantis shrimp can perceive circular polarized light, a previously unknown visual system. This ability is thought to be used for sex-specific communication and may provide a private channel of communication unavailable to predators and competitors.
A study published in PNAS reveals that evolution drives animals to become more complex, with most branches evolving in the same direction. The researchers found that complexity increases as organisms adapt to their environments and compete for resources.
A Brown-led study uses genomics tools to reorganize the animal phylogenomic research project, clarifying relationships between major groups and offering surprises. Comb jellyfish diverged from other animals even before sponges, questioning the root of the animal tree.
Researchers argue that autistic savants' exceptional skills come at a cost in other aspects of processing, while animals process sensory inputs according to rules. This shared processing method is thought to be a specialized feature of the left hemisphere, common to both humans and nonhuman animals.
A Harvard University scientist has synthesized four key differences in human and animal cognition into a hypothesis on what exactly differentiates human and animal thought. The theory of