Articles tagged with Animal Science
Scientists have discovered over 100 different cell types in the sea anemone, including complex neuronal diversity. This finding adds to discussions on cell evolution and development, providing insights into the fundamental rules governing cell function across animals.
A new study led by Gideon Nave found that giving men a single dose of testosterone increased their preference for higher-status goods. The study measured participants' preferences and positive attitudes about products, serving as a foundation for forecasting consumer behavior.
Researchers have developed a new system using ultraflexible mesh electronics to track the firing patterns of dozens of retinal cells chronically in awake animals. This allows for new insights into how retinal ganglion cells behave over multiple circadian cycles, revealing dramatic changes in cell activity at different times of day.
Scientists have uncovered a new species of chancelloriid, an ancient group of spiny tube-shaped animals that lived during the Cambrian Period. The discovery provides fresh insights into the evolution of early animals, with the fossil resembling modern sponges in pattern of body growth.
Researchers discovered that Caribbean rock mantis shrimp specifically target the most fragile regions of snail shells to gain access. They can adapt their strategy based on the shell's shape and size.
Researchers taught bees to recognize 'greater than' and 'less than' inequalities, and they successfully applied this knowledge to understand the concept of zero. This groundbreaking study reveals that even with a limited number of neurons, insects can grasp abstract mathematical concepts.
A new study published in Biological Reviews analyzed over 300 statements about pterosaur diets and found that most are based on inferences drawn from modern organisms or fossil environments. This lack of reliable evidence has led to a wide range of proposed diets, with some groups showing strong agreement while others remain uncertain.
Researchers at Kyoto University used machine learning to study the behavior of worms searching for food on surfaces with different temperature zones. The findings showed that the worms combined sensory information from environmental temperature and change in temperature to make decisions, similar to rational decision-making in humans. ...
Researchers found that chimpanzees use distinct 'hoo' variants in different behavioral contexts, such as travel and rest. These variations enable receivers to respond appropriately and maintain cohesion, facilitating cooperation.
Scientists developed a predictive model to assess wind farm construction noise impact on harbor porpoise population. The DEPONS model evaluates disturbance effects on animal movements and foraging behaviors.
A Northeast sea slug has been found to store millions of algal plastids in its gut lining after pilfering them from the brown alga Vaucheria litorea, a food source rich in tiny solar panels. The sea slug survives solely on photosynthesis for up to six months by protecting and utilizing the stolen plastids.
Daniel Sheldon's NSF grant aims to develop efficient algorithms for complex models, enabling scientists to make predictions and test hypotheses from large datasets. He plans to address challenges in modeling animal populations, causal reasoning about citizen scientist data, and optimizing decision-making with multiple objectives.
Researchers from Max Delbrück Center have published a comprehensive study on the Schmidtea mediterranea flatworm, creating a detailed cell atlas and lineage tree. The work provides new insights into cellular regeneration processes and offers a powerful approach to studying stem cells and their lineages in multiple animals.
Scientists discovered a hundred pink, dinner-plate-sized octopuses huddled around cracks in the rocks, guarding their eggs in warm water. The find suggests a better, healthier habitat nearby, potentially supporting an even larger population.
A proposed Texas border wall would threaten endangered species, cause habitat destruction, and disrupt the region's growing ecotourism industry. The construction of the wall and associated roads could also damage valuable riparian forest ecosystems and harm pollinators.
A team of scientists discovered a previously unknown species and genus of frogs in a limestone cave in Thailand. The findings shed new light on the evolutionary history of the relevant group of Amphibia and highlight the importance of conservation efforts for this unique species.
Researchers used geometric morphometrics to analyze shell shape in eastern box turtles, finding a gradient of variation that carries through to modern box turtles. The study suggests some fossils represent lost subspecies or extinct species, while others show a closer relationship to modern species.
Research estimates vulnerability and extinction risk of migratory species from different regions and ecosystems worldwide. Migratory animals face barriers such as roads, dams, and urban development, which can lead to population decline and increased extinction risk.
A study of beetles shows that those with physical impairments spend more time feeding their young, sacrificing resources to care for their offspring. The researchers suggest that the insects may respond by expecting not to breed again and expending more resources to guarantee their young's survival.
A study by the University of Plymouth reveals that exposure to moderate hypoxia can have different effects on metabolic performance in animals bred under chronic hypoxic conditions. This could result in underestimated vulnerability of species, leading to reduced biodiversity.
Researchers at Duke University discovered that hogfish sense light with their skin, which differs from eye-based vision. The skin's unique ability allows it to detect changes in brightness or wavelength, such as moving shadows or light fluctuations, enabling the fish to adapt its color pattern accordingly.
Scientists discovered two new frog species with gastromyzophorous tadpoles, which use modified bellies to exploit fast-flowing streams. The frogs are endemic to Sumatra's rainforests and were classified into a new genus called Sumaterana.
A new study suggests that managing eating habits, particularly meal times, could help control malaria infections. Researchers found that malaria parasites in infected mice timed their daily multiplication and invasion of red blood cells to match the animal's feeding schedule.
Researchers found that helping behavior can be more advantageous in unpredictable environments, where staying home to raise relatives can provide a survival advantage. This challenges the long-held theory of Haldane's rule, which explains why some animals prioritize their own reproduction over helping others.
Scientists from the University of Bonn and the US study a newly hatched dumbo octopus for the first time, revealing surprising similarities with adult animals. The rare find provides valuable insights into the extraordinary habitat of deep-sea dumbo octopuses.
Researchers from the University of Konstanz and Japan's Universities of Sapporo and Tokyo discovered a neural structure in cockroach brains that processes olfactory molecules with spatial information. This finding suggests that cockroaches can build an internal map of their olfactory landscape, similar to humans' sense of touch and sight.
Scientists propose a nuanced model for extinction that incorporates body size and metabolic scaling, revealing why animal species tend to evolve toward larger body sizes. The model predicts an energetically ideal mammal size 2.5 times that of an African elephant, making it more stable against extinction by starvation.
A University of Adelaide study found that monitoring wildlife using drones is more accurate than traditional counting approaches. The #EpicDuckChallenge used fake bird colonies to test the technology, with citizen scientists tallying the number of birds in drone photos, resulting in a higher accuracy rate.
New research reveals that larger hummingbirds can compensate for their greater body masses by adapting their physiology. The study found that acceleration is primarily driven by muscle capacity, while wing size plays a key role in maneuverability.
Researchers identified protective structures at the end of chromosomes called telomeres that don't shorten with age in longest-lived bat species. The study found two genes ATM and SETX drive this process, potentially leading to new solutions to slow down aging and extend human lifespan.
Phoronida, Bryozoans, and Brachiopods are related despite earlier arguments. A recent study led by Elena Temereva reveals the presence of homological nerve elements in their lophophore, establishing a common protophoronid ancestor.
A global study using GPS data from over 800 animals found that terrestrial mammalian movements in areas with a high human footprint are significantly reduced. This fragmentation of habitats due to human infrastructure can have severe consequences for ecosystems, including changes in seed dispersal, food chains, and population sizes.
Researchers found that 500-million-year-old macroorganisms, such as Beltanelliformis, were actually colonies of cyanobacteria. The study used biomarkers to determine the composition of ancient organisms, shedding light on the evolution of life on Earth.
A novel hypothesis proposes that animal diversification resulted from a revolution within the animals' own biology, rather than in surrounding chemistry. Cells with stem cell properties are vital for multicellular life, and tumor cells have developed mechanisms to maintain these properties despite high oxygen levels.
Researchers suggest a biological innovation fueled animal diversification during the Cambrian explosion, rather than atmospheric oxygen changes. Tumor biology insights reveal how stem cells maintain properties in high-oxygen environments, sparking new perspective on tissue renewal.
Researchers at the Max Planck Institute for Biophysical Chemistry have developed secondary nanobodies that outperform traditional antibodies in key cell-biological applications. These nanobodies can be produced in large scale by bacteria, reducing the need for animals in antibody production and improving resolution in light microscopy.
Research reveals that hibernating rodents evolved adaptations to reduce cold sensation, allowing them to conserve energy during winter. This adaptation enables ground squirrels and Syrian hamsters to survive exposure to extremely low temperatures without feeling stressed.
A new study analyzes summaries from the AnimalTestInfo website to identify potential targets for reducing harm to lab animals. The research found specific areas where the '3Rs' (replacement, reduction, and refinement) can be implemented to minimize animal testing.
A new species of extinct marsupial lion, Wakaleo schouteni, has been discovered in Australia, weighing around 23 kilograms. This finding provides insights into the evolutionary relationships of marsupial lions and raises questions about their diversity.
Researchers used video observations to reveal that deep-sea jellies are key predators and play a crucial role in forming the principal forage base for many commercially-important meso-predators and apex species. The study also found that gelatinous animals have complex food habits spanning the entire food web.
A new study by researchers at LMU Munich confirms that sponges are the oldest animal group, contradicting previous findings that suggested comb jellies were the first. The team used a refined method to analyze genetic data and found that sponges' simple multicellular structure is more primitive than initially thought.
Scientists at Bielefeld University and University of Münster are studying how animals adapt to their environment through individualised ecological niches. They explore the genetic and behavioral factors influencing these adaptations.
Researchers identified a potential drug to protect brain cells after ischemic stroke by mimicking the cellular changes of hibernating ground squirrels. The compound, ebselen, boosts SUMOylation and keeps brain cells alive in the absence of oxygen and glucose.
A recent survey of neuroscience research found that the number of studies reporting lab animal sex increased by 30% over four years, but sex bias remained prevalent. Despite this progress, sex omission still affects about 20% of analyzed articles, highlighting the need for improved research design.
Researchers discovered that certain carbon nanotubes can induce mesothelioma in mice, a type of cancer linked to asbestos. The study highlights the potential carcinogenic effects of long and thin carbon nanotubes, emphasizing the need for safer alternatives.
Scientists used remote acoustic monitoring to track bird activity on Okinawa, finding more animal sounds in less developed areas. The study also confirmed that human-caused noise can be disruptive for birds.
Scientists from Moscow State University have discovered the evolutionary pathways of groups of invertebrates with specific tentacular apparatus - the lophophore. The study reveals that lophophorates are the closest relatives, with a common ancestral morphology.
Margaret C. Crofoot receives a prestigious Alexander von Humboldt Professorship worth five million euros to further Collective Behaviour research at the University of Konstanz. The professorship aims to create a cutting-edge international research facility, bringing together experts from various fields.
Researchers studied the evolution of sticky toe pads in lizards, finding that geckos took an 'adaptive stumble' approach, while anoles committed to a single type. This divergence highlights the complex nature of evolutionary processes and challenges assumptions about the predictability of evolution.
A new study found a shared respiratory microbiome in healthy humpback whales, with 25 bacterial groups present across all samples. This discovery could serve as an important framework for monitoring whale health and detecting diseases.
A recent analysis by Stanford University researchers found that places with high animal diversity correlate with areas that have the most carbon sequestered in soil. The team discovered that meal remnants from animals contribute to an increase in soil microbes, which convert organic material into stored carbon.
A team of Rutgers scientists has discovered a way to increase the nutritional value of corn by inserting a bacterial gene that produces methionine, a key amino acid. This breakthrough could benefit millions in developing countries who rely on corn as a staple food, and significantly reduce worldwide animal feed costs.
A study investigated whether raccoons understand the principles of water displacement by solving an ancient Greek fable-inspired puzzle. Raccoons were trained to drop stones into a tube to retrieve floating marshmallows, showing innovative problem-solving abilities.
New research suggests that residual human odour on soiled clothes acts as an elicitor of host-seeking behaviour in bed bugs. This could lead to the dispersal of bed bugs through dirty laundry, particularly when left exposed in sleeping areas.
A study by Dr Alastair Harry found that nearly a third of shark populations had underestimated ages, with an average underestimation of 18 years. This could lead to inefficient management and research priorities, affecting the many disciplines relying on baseline life history data.
Researchers discover two new crustacean species in deep waters off the northwest coast of Spain, both blind and measuring just a few millimeters. The species are distinct despite sharing their lack of eyes, with one belonging to the Photidae family and the other to the Corophiidae family.
A team of scientists has sequenced the genome of an asexual tiny worm, Diploscapter pachys, which originated 18 million years ago. The study reveals how it maintains genetic variation and overcomes the disadvantages of asexual reproduction by skipping recombination.
Researchers observed reduced pulsing activity at night and delayed responses to stimulation in the upside-down jellyfish Cassiopea. The findings suggest that jellyfish do indeed sleep, but the study also raises more questions about the origin of sleep and its relationship with neural systems.
Changes to wetlands alter animal populations, with reduced survival and reproduction in human-altered habitats. The study highlights the complex role of wetlands in human-altered ecosystems, which can provide important habitat but also pose risks to animals.
Researchers are learning how animals overcome environmental challenges through shared strategies, inspiring new designs for robots and flying vehicles. The study of complex physiological systems and the intersection of physics and organismal biology is a rapidly advancing field with promising applications.