Articles tagged with Animal Research
A new study found that agoutis in areas with limited food are more active at twilight and have a higher risk of being killed by ocelots. This increased predation risk affects seed dispersal by agoutis, who bury seeds as food reserves that may germinate into new trees.
Researchers found that moderate drinking boosted the immune system of rhesus macaques, leading to enhanced responses to vaccines. In contrast, heavy drinkers showed diminished vaccine responses. The study suggests a potential link between moderate alcohol consumption and improved immune function.
Research published in Ecology Letters reveals the ancestor of snakes and lizards likely gave birth to live young, contrary to long-held assumptions. The findings support the idea that live birth has a more ancient past than previously thought, dating back 175 million years ago.
A study by UC Riverside-led team found that moderate alcohol consumption can bolster our immune system and potentially fight infections. The finding could lead to new interventions to improve vaccine responses, benefiting vulnerable populations.
A new study reveals that favorable climate conditions in the year prior to nesting and the number of returning female turtles significantly impact loggerhead sea turtle nesting activity. The research suggests that protecting older juveniles and sub-adults is crucial for population recovery, and may be more important than protecting hat...
A study published in Nature Climate Change suggests that climate change will endanger the habitat of caribou, a species already threatened by the loss of critical lichen-rich environments. The research, led by University of Calgary professor Marco Musiani, analyzed DNA from reindeer and caribou populations across North America and Europe.
A new cooperative consortium, Global Invertebrate Genomics Alliance (GIGA), was formed to explore the genomic basis of unique features in invertebrates. GIGA aims to promote comparative genomics and bioinformatics research on non-insect/non-nematode invertebrates.
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.
Researchers at Tel Aviv University found that bats rely on vision for navigation and orientation, while using echolocation to detect small prey in low light conditions. This unique combination of senses gives bats a significant advantage in hunting and surviving in the night.
Research in C. elegans reveals a synergistic five-fold extension of longevity through combined mutations in insulin signaling and the nutrient pathway. This finding suggests the potential for combination therapies to combat aging and age-related diseases.
Conflicts between humans and wildlife in Serengeti National Park increase despite efforts to protect the environment and local communities. Research suggests that education and support are crucial for preventing attacks on livestock and crops.
A new study from Carnegie Institution researchers used zebrafish to understand the circuitry underlying nicotine addiction. The research confirmed that a specific neural pathway in fish brains responds similarly to nicotine as it does in human brains.
Researchers at Johns Hopkins Medicine identified a gene involved in forming brain circuitry using a powerful new technique. The discovery paves the way for faster progress toward identifying genes involved in complex mental illnesses, such as autism and schizophrenia.
Researchers found that adolescent mice consume more alcohol when surrounded by peers, challenging the assumption that peer pressure is solely responsible for teen risk-taking. This study supports Steinberg's previous findings that peer influence primes the reward system in adolescents.
Researchers at UEA are launching a project to develop a non-mammalian screening tool for predicting drug safety. The project aims to reduce the use of animals in pharmaceutical testing by using mammalian cells, early frog embryos, and computer modeling.
A new study investigates the potential toxicity of nanoparticles on human immune cells, finding that eosinophils respond to nanoparticle contact. The research aims to establish standards for worker protection and regulation of nanoparticle use.
Researchers found that pupils constrict in response to imagining brighter scenes and dilate when imagining darker scenes. This effect was observed even when participants were not actively trying to imagine the scenes, suggesting that mental imagery is closely tied to actual perception.
Research suggests that killer whales eavesdrop on sounds generated by their marine mammal prey to locate and hunt them in dark waters. A two-year study in Alaska using acoustic recording tags found evidence of nighttime hunting, debunking previous assumptions about the animals' reliance on echolocation.
Researchers found that consistent individual differences exist in sparrow behavior, with some birds being more aggressive and others using signals to communicate their intentions. The study identified a new dimension of animal personality, called communicativeness, which plays a significant role in signaling during aggressive situations.
A new study refutes the theory that lions are a major predator of cheetah cubs and finds that big cats can coexist in protected areas. Cheetah cub survival rates were found to be higher in Kgalagadi Transfrontier Park than previously thought.
Scientists have discovered that mice can pass on learned sensitivity to a specific odor to their offspring via epigenetic alterations in the sperm or eggs. This phenomenon has significant implications for understanding psychiatric disorders and developing therapeutic strategies for intergenerational trauma effects.
Researchers have discovered a specialized sound-producing organ in koalas, located outside the voice box, which enables extremely low-pitched mating calls. The organ produces continuous sounds on inhalation and exhalation, similar to a donkey's braying.
A legless, leaping fish that lives on land avoids predators by using camouflage to match its rocky environment, reducing attacks from birds, lizards, and crabs. The researchers found that the fish's unique colouration helped it survive in its new habitat, suggesting an evolutionary advantage.
Researchers at Newcastle University have identified a gene mutation that causes mice to exhibit excessive alcohol consumption. The study found that mice with the mutation preferred drinking alcohol over water and would work to obtain it, even becoming intoxicated.
Researchers developed a new immunotherapy approach that successfully treated glioblastoma, a fatal brain tumor, by stimulating the immune system and inducing tumor rejection. The treatment, combining intra-tumoral Interleukin-12 with CTLA-4 blockade, achieved a success rate of up to 80% in preclinical trials.
Researchers from Max Planck Institute for Ornithology found that friendly labels reduced interaction with equipment, with 40% less interference compared to neutral or threatening labels. The study suggests that friendly messages could minimize the number of incidences of vandalism and theft.
Researchers found that co-transplanting Schwann cells and olfactory ensheathing cells, combined with daily treadmill training, promotes functional recovery in rats with spinal cord injuries. The study reveals a synergistic benefit of the combined therapy on axonal regeneration and motor function improvement.
A University of Guelph study reveals that male minks raised in enriched environments have better love lives, with nearly twice as many matings. The research found that relaxed males are more successful due to their calmer behavior and physical improvements.
The University of California, Riverside researcher is using sensors to count and classify insect vectors, providing real-time information to plan effective interventions. She aims to create an open-source library of insect wingbeat signatures and behaviors to aid researchers worldwide in combating malaria.
University of Minnesota researchers have developed a new approach for identifying potential environmental effects of releasing genetically engineered (GE) insects. The framework evaluates the entire range of potential effects, including those during transitory and steady state phases, providing improved guidance for ecological risk ass...
Researchers have found a modified version of a common human dietary supplement to be effective in curing lab animals infected with hookworms. The probiotic was found to be safe and potentially lethal to intestinal worms, offering new hope for treating the disease that affects 1.5 billion people globally.
A Rutgers-Camden professor is building a large-scale database of chemical toxicity information, combining in-vitro and computational methods to provide valuable data for scientists. The online database will aid in drug development by helping determine safe doses for patients.
The number of diving ducks migrating to Lough Neagh for winter has dropped from 100,000 to less than 21,000 over a decade. The lake's ecosystem has changed dramatically since 2000/01, leading to a decline in insects and snails, which are essential food sources for water birds.
A new experiment in Pennsylvania reveals insight into how insects fly and how to design tiny flying robots. The analysis improves understanding of insect flight and informs the design of small flying robots for various purposes.
The institute will utilize its high-throughput, human cell-based assays and induced pluripotent stem cells to analyze thousands of potential toxins. This collaboration aims to provide an early and relevant assessment of potential toxicities in a rapid and cost-effective manner.
Research at UEA found that individual birds arrive at the same time each year, but overall arrival dates are advancing due to climate-driven changes in bird hatching and nesting. This advance is linked to the aging of the bird population, with younger birds migrating earlier as a result.
Researchers found that large pulses of organic material sink to the deep seafloor, providing enough food for years at a time. The study used multiple instruments to track marine snow and its impact on life in the deep.
A study published in the Proceedings of the National Academy of Sciences reveals that bacteria are responsible for conveying detailed information through scent posts of hyenas, allowing other animals to quickly gather information about their health and surroundings.
A Penn Medicine study finds that sons of cocaine-using fathers are less likely to want the drug and resistant to its effects. The research suggests that epigenetic changes caused by cocaine use can be passed down to the next generation, potentially making them less susceptible to addiction.
Studies on armadillos, fruit flies, nematodes, and monkeys reveal insights into progressive blindness, brain structure, and decision-making. The findings also highlight the importance of animal models in understanding human brain function and developing medical diagnostic devices.
Researchers at the University of Iowa have created a bio patch that can regrow bone by delivering DNA instructions to cells. The patch successfully regenerated bone in test animals and stimulated new growth in human bone marrow stromal cells. This breakthrough technology has potential uses in dentistry, including rebuilding bone for de...
A study from Massachusetts General Hospital found that postoperative pain can contribute to temporary impairments in learning and memory in surgical patients. Researchers identified a probable mechanism for pain-induced cognitive impairment, suggesting pathways that may be targeted by potential preventive measures.
Researchers at UMD found that fruit flies have similar mechanisms to regulate blood sugar as humans, including the use of insulin. This discovery enables the use of fruit flies in screening tests for new diabetes treatments.
Researchers at Duke University have enabled monkeys to control two virtual arms using their brain activity. The study advances efforts to develop bilateral movement in brain-controlled prosthetic devices, aiming to restore mobility and sense of touch in severely paralyzed patients.
Cocaine addicts may be seeking relief from emotional lows rather than euphoric highs. Rutgers researchers discovered that negative emotions play a crucial role in regulating cocaine abuse, leading to binge-like behavior. The study suggests that understanding the importance of emotional lows can help combat substance abuse.
Researchers found that pigeons can use changes in volatile organic compounds in the atmosphere to determine their direction and find their way home. By analyzing these chemical changes, pigeons can associate specific smells with particular wind directions, allowing them to navigate back to their lofts.
A 300-year-old Asian elephant specimen has been reclassified as an African elephant due to genetic and physical evidence. The discovery confirms that the specimen, named Hansken, was likely from West Central Africa and challenges traditional understanding of the species' classification.
Researchers found that mammalian body size decreased during two ancient global warming events, the Paleocene-Eocene Thermal Maximum (PETM) and Eocene Thermal Maximum 2 (ETM2). The study suggests that mammals may adapt to extreme warming by becoming smaller.
Researchers at the University of Pittsburgh developed a system to attract regulatory T-cells to inflamed gums, reducing inflammation and improving periodontal disease symptoms. The treatment showed promise in animal studies, offering a new therapeutic paradigm for treating gum disease.
The study found that the EPA accepted only 23% of OSRI submissions, leading to the use of thousands of animals in unnecessary testing. The authors urge the EPA to standardize its evaluation procedures and support the use of existing data to reduce animal use.
Researchers at Royal Holloway University have made a significant discovery about how valproate blocks seizures in the brain. By using a simple amoeba, they identified the specific chemical responsible for seizure progression and found that its decrease can cause even more seizure activity.
Researchers at University of British Columbia studied the energy cost of satellite tags on aquatic animals, finding significant drag increases on smaller or juvenile animals. The study provides a universal formula to calculate drag for various marine species, promoting accurate data collection and conservation strategies.
Researchers from Nanjing Normal University and BGI report their original genomic research on the Yangtze River dolphin, providing valuable resources for conservation. The study reveals genetic and evolutionary adaptations, including accelerated evolution of genes involved in oxygen carrying and sensing.
Researchers analyzed teeth of mice and rats using X-ray beams to study evolutionary processes that led to their characteristic feature. The team identified two key moments in the acquisition of this apparatus, dating back 16 million years.
Researchers found that eastern coyotes and coyote × wolf hybrids in central Ontario have killed adult moose, challenging the long-held notion of their inability to tackle such prey. The study also discovered that younger and older adult moose are more vulnerable due to inexperience and deteriorating body condition.
A study by Stanford Woods Institute researchers reveals that Aboriginal hunting practices, using fire to clear land, nearly doubles lizard populations and improves habitat. The approach combines practical knowledge with ecological co-evolution, challenging conservation policies.
Researchers found that the grasshopper mouse's sodium channel 1.8 has an amino acid substitution that blocks the activation of channel 1.8 and inhibits the pain response to scorpion venom, making them numb to its sting.
Bielefeld biologists have confirmed a genetic clock influences when young buzzards leave their parents' territory. The study, published in Molecular Ecology, found that four genes determine the timing of dispersal and plumage morph in sedentary birds.
WSU researchers found that gestating rats exposed to DDT experienced increased obesity in third-generation offspring, suggesting transgenerational epigenetic inheritance. This effect is believed to be related to how genes are turned on and off in the exposed animals.
Research at Tel Aviv University suggests that homosexual behavior in insects and spiders is often a case of mistaken identity. In most cases, males mistake other males for females due to lack of time and energy to inspect their mates' gender. This behavior lacks potential benefits like procreation and can be costly.