Articles tagged with Animal Research
Researchers developed a novel data-logging tag called ITAG to study small invertebrates' behaviors and physiology. The tag measures ocean conditions and animal responses at high resolution, providing valuable insights into their natural behaviors and adaptations.
Research reveals that tiny plankton can store large amounts of CO2, potentially doubling estimates of ocean carbon absorption. The copepod lipid pump mechanism is a significant discovery, as it was not previously considered in climate models.
A study published in Current Biology identified a species-specific genetic marker called MUP used by female house mice to select closely related females as nest partners. The researchers also found that the vertebrate-wide MHC is not involved in kin recognition, contrary to previous assumptions.
A mathematical analytical tool developed by University of Cincinnati scientists can predict strontium ratios in surface water, soil, vegetation, fish, and mammal skeletal tissues with high accuracy. The tool is most successful when applied to mammals, making it a valuable tool for ecological and paleoecological research.
Researchers at James Cook University have developed a new method using household vinegar to kill the Crown of Thorns Starfish, a major contributor to coral reef decline. The treatment shows a 100% kill rate and is significantly cheaper than existing methods.
Researchers attached geolocators to Prothonotary Warblers in Louisiana, tracking their migration patterns that spanned at least 5,000 miles across seven countries. The study provides new insights into the birds' migratory behavior and wintering locations.
A team of researchers decoded genetic sequences of E. coli O157, revealing its ancestor has been around for over 175 years. The study found that the bacteria's ability to produce shiga-toxins has evolved, making some strains more deadly than others.
A University of Missouri study found that female mice exposed to endocrine disruptors like BPA and EE showed decreased physical activity in their daughters, which can predispose them to obesity and other metabolic disorders. The chemicals can affect metabolism, energy expenditure, and voluntary exercise patterns.
Researchers found that birds' feeding preferences, rather than social position, are key factors in contracting and spreading a common eye disease. The study suggests targeting high-risk individuals to reduce disease transmission.
Researchers discovered that sponges construct their skeletons through a complex process involving dynamic transport and cementation of spicules. The findings reveal a fundamentally new mechanism of forming animal body shape and may inspire interdisciplinary studies in fields like bioengineering and architecture.
Researchers at Linköping University found that domesticated animals grew faster and laid larger eggs when selected for reduced fear of humans. The study used red junglefowl and bred them over five generations to demonstrate the link between tameness and desirable traits.
Researchers at GW University, Emory University, and Harvard University will investigate the connection between stress-related mental health disorders like PTSD and cardiovascular disease. The project aims to develop new therapeutic advances in treating PTSD and its comorbidity with cardiovascular disease.
Consolidation of small populations and protected areas are key to saving the critically endangered species, researchers say. The study provides vital data to support a final attempt to prevent extinction, with priority forest protection zones identified as irreplaceable.
Scientists have discovered that the shift from a tree-based diet to one based on grass occurred around 3.8 million years ago, allowing early humans to be more mobile and adaptable. This finding provides new insights into the interactions between morphology and behavior among Pliocene primates.
Researchers found that Asian elephants born during stressful periods produce significantly fewer offspring despite higher reproduction rates at an early age. The decline in reproductive rate accelerates with age, decades later.
Well-developed eyes require between 5% and 15% of an animal's total energy budget, according to a study on Mexican cavefish. The visual system's high energy cost leads to trade-offs with other organ systems in environments where it is not essential.
The Rutgers breakthrough device reduces the cost of sophisticated lab tests for diseases like HIV, Lyme disease, and syphilis by using miniaturized channels and valves. The technology also enables complex analyses using 90% less sample fluid than conventional tests, opening doors for new research.
A systematic review of animal studies on MVA85A vaccine found insufficient evidence to support its effectiveness as a BCG booster. The delay in publishing the largest monkey trial with the longest follow-up also raised concerns about scientific integrity.
Scientists have discovered a novel approach to study neural circuits that change behavior, using Caenorhabditis elegans worms. By flipping the sign of a synapse, researchers were able to completely reverse behavior, suggesting that neural wiring is remarkably stable and allows for changes in behavior.
A new study from NIMBioS reveals that contact rates and competition play crucial roles in determining the risk of parasitic disease outbreaks in animal communities. The research found that high contact rates and strong competition can amplify parasite fitness, increasing the likelihood of disease transmission.
A multinational team of scientists created the world's largest protein map, revealing tens of thousands of new protein interactions that account for about a quarter of all estimated protein contacts in a cell. The map is helping researchers spot individual proteins that could be at the root of complex human disorders.
A study published in Nature has identified nearly 1,000 common protein complexes shared by most kinds of animals, revealing deep evolutionary relationships. These findings have significant implications for understanding the genetic basis of diseases such as Alzheimer's, Parkinson's, and cancer across different species.
A new study published in PLOS Computational Biology found that rodents behave like a self-organizing system when huddling together to regulate their temperature. This allows the group to better adapt to changing temperatures, with individual behaviors improving the ability of the whole group to regulate its temperature.
Research found that cheek-padded males are significantly more successful in fathering offspring, with dominant males having greater reproductive success during their tenure as dominant. However, other males were able to sire offspring during periods of rank instability or at the beginning and end of a dominant male's reign.
Researchers at Washington State University discovered that altering the timing of an animal's sleep can have a significant impact on its immune response and overall sleep quality. The study found that mice with disrupted circadian cycles had blunted or overactive immune responses, making them more susceptible to illness.
A study found that island-dwelling Balkan green lizards have a longer small intestine and hindgut compared to their mainland counterparts. They also possess cecal valves, which slow down food passage and provide fermenting chambers, allowing them to digest more plant material.
Research by UNH scientists finds that appearance alone is not enough to identify hybrid zone birds; DNA analysis reveals complex combinations of plumage traits. The study provides insights into the challenges of monitoring hybrids in natural populations and aids in conservation initiatives for both species.
Scientists have created a nanoscale vehicle made of DNA to shuttle the CRISPR-Cas9 gene-editing tool into cells. This 'nanoclew' ensures precise control over the dosage of editing, reducing unintended edits. The researchers successfully tested the system in cancer cell cultures and tumors in mice, achieving promising results.
Researchers at Monash University developed a new non-invasive image processing technique to visualize embryo formation, challenging the prevailing model of cell placement. This breakthrough offers potential for improving IVF success rates by selecting embryos with optimal inter-cellular forces.
Researchers have developed a 3D tissue scaffold for plants, enabling the observation of individual plant cells in a natural environment. The study reveals complex cell behavior, including cells clinging to and spiraling around their supports like vines.
The Entomological Society of America has elected 10 new Fellows, including Dr. Serap Aksoy and Dr. Deane Bowers, for their research on vector genomics, disease control, and insect-plant interactions. The Fellows will be recognized at the ESA's 63rd Annual Meeting in Minneapolis.
Researchers tested Goffin cockatoos' ability to infer by exclusion, a cognitive capacity where animals choose between known and unknown stimuli. More than half of the birds showed evidence of this ability, indicating they could distinguish between rewarded and unrewarded stimuli.
Scientists have discovered a new virus in seals that is closely related to human hepatitis A virus, raising concerns about the emergence of hepatitis A. The researchers found the virus in harbor seals off the coast of New England and suggest it may be present in other wildlife species.
Researchers found that New Caledonian crows use a combination of social learning and trial-and-error methods to acquire tool shapes. The birds observe another crow's actions, then mimic the end result, rather than copying specific actions, suggesting an alternative explanation for their cumulative technological culture.
Research shows that male bluebirds change their songs to be heard over increased background noise caused by human activities such as traffic. The birds adjust their songs immediately after noise levels intensify, making real-time adjustments to produce louder and lower-pitched sounds.
A new study by Aarhus University researchers presents a world map of mammals without human impact, revealing diverse wildlife in northern Europe, North and South America, and Africa. The study provides insights into natural biodiversity patterns and factors influencing species distribution.
Researchers found that manipulating the circadian clock's timing signal can restore reproductive function in older female mice. This approach may have implications for human fertility and suggest the importance of 'circadian hygiene' to prevent reproductive difficulties.
A recent study found that signaling to one another can be lost in populations, particularly if receiving the signal is not crucial for mating. This loss of signals can happen rapidly and may lead to extinction or hybridization with other species.
Researchers found a 24-hour day 'bicycle' mechanism turning key brain neurons on or off with sodium and potassium currents, awakening animals in the morning and putting them to sleep at night. This ancient mechanism is conserved across hundreds of millions of years of evolution and may lead to new drug targets for sleep-wake trouble.
Researchers have identified a protective mechanism used by beneficial bacteria to safeguard intestinal cells from stress and damage. By stimulating the Nrf2 pathway, these bacteria can help prevent weight loss and death after radiation exposure, as well as protect against toxic herbicides like paraquat.
A new study from WCS uses the Wisdom of Crowds method to assess the conservation status of the Manus green tree snail, a species found only on Manus Island in Papua New Guinea. The approach involves surveying a large number of people to generate estimates of the snail's range, distribution, and decline rate.
Research suggests that stripes do not provide an advantage for animals living in groups when multiple targets are presented simultaneously. This contradicts the long-held assumption that stripes evolved to make it difficult for predators to capture animals moving in a group.
A recent study found that Hawaii has lost a significant portion of its unique and diverse invertebrate species, with only 15 out of 325 recognized Amastridae species still alive. Globally, the team estimated that up to 14% of Earth's animal species may have been lost due to human activities.
A team of ETH Zurich researchers has identified seven genes central to X chromosome inactivation in females, including Spen, which prevents gene expression at the X chromosome. The discovery sheds light on how the human body maintains a delicate balance between genes, preventing disease.
A new family of glycerol transporters has been discovered in insects, which may have enabled their dominance on Earth. The transporters, called entomoglyceroporins, have a higher ability for glycerol transport than other channels, suggesting they played a key role in insects' success.
A McGill University study found that insecticides can alter the behavior of individual spiders, including their ability to capture prey and explore new territories. The effects on male and female spiders were also distinct, with females being more affected in their ability to capture prey.
Researchers tracked five pandas with GPS collars for three years, finding they exhibit three daily activity peaks - morning, afternoon, and midnight. This unique pattern may be linked to their low nutrition quality from bamboo consumption, allowing them to adapt to their environment.
Researchers developed the Equine Facial Action Coding System (EquiFACS) to identify individual facial expressions in horses. The study found that horses share a rich repertoire of complex facial movements with humans and chimps, suggesting evolutionary parallels in communication.
A study describes general structure of scavenger communities worldwide, revealing that birds dominate consumption with 65.8% frequency, while mammals and large predators also play key roles in structuring these communities. The findings highlight the global impact of human activities on biodiversity and ecosystem functioning.
A new feed supplement has been shown to reduce dairy cow methane emissions by 30% without affecting feed intake, fiber digestibility, or milk production. This could have significant implications for global climate change, as animal agriculture is a major source of methane emissions.
Researchers discovered that male wolf spiders can learn to associate visual cues of rival males with female presence, allowing them to adapt their courtship behavior. This complex learning process sheds light on the importance of eavesdropping in animal behavior and its potential applications in understanding human physiology.
Researchers developed an animal model that replicates the imbalance of gut bacteria associated with malnutrition, a disease responsible for one-fifth of child deaths worldwide. The model will enable testing of treatments and understanding how malnutrition impacts cognitive development and growth.
Researchers have discovered a neurological mechanism that explains how songbirds refine and alter their songs as adults, shedding light on the human brain's learning complex motor skills. The finding may have long-term implications for treating neurological conditions.
Animal models are still crucial for medical research, according to experts, as they have led to tremendous progress in treating human and animal diseases. The authors argue that alternative methods, such as in vitro research, are not yet ready to replace animal models entirely.
Researchers develop novel imaging technology to visualize brain's intricate structures, including neurons and blood vessels. The breakthrough enables scientists to study neurological disorders and understand how brain development shapes individual identity.
A study by Dr. Ivan Tuf's team found that Common rough woodlice exhibit individual patterns of defensive behavior, suggesting the presence of personality traits. The researchers observed repeatability in reactions to external impacts, identifying some woodlices as 'bold' and others as 'shy'.
Researchers developed 3D human skin tissue models to detect sensitizers in medical devices, potentially replacing animal testing. The models showed ability to detect low levels of known skin sensitizers.
Researchers have developed micelle sequestrant polymers that capture fat particles in the intestines, preventing their absorption and excretion. This breakthrough could lead to a safe and effective anti-obesity drug with long-term benefits.
Researchers used virtual reality to test roadside animal detection systems and found that picture-based warning signs outperformed text-based ones. Drivers who received warnings reduced their speed and braking time in response to a simulated wild animal on the road.
A four-year study aims to understand the neurological mechanisms behind reduced taste for sweet and fatty foods following Roux-en-Y gastric bypass surgery and diet-induced obesity. The research seeks to identify new treatments for effective weight loss and shed light on why RYGB is an effective surgical treatment for obesity.