Articles tagged with Animals
A 3.5-billion-year-old phosphorus surplus coincided with the emergence of complex life on Earth, suggesting a key role in animal evolution. The discovery was made by analyzing sedimentary rock records from ancient coastal zones.
A Norwegian ground-breaking study reveals that the mouth and anus do not originate from a common blastopore as previously thought. The research suggests that the formation of either organ is a consequence of how each embryo is organized during early development.
A study on rhesus macaques found that low-status animals exhibit greater antibacterial responses, while high-status animals have stronger antiviral responses. Social subordination stress influences immune-related gene expression in low-status individuals.
A random mutation in a single-celled organism created a new family of proteins that are essential for the evolution of animals. The mutation altered the protein's flexibility, allowing it to advance to a new function and play a key role in multicellular life.
Researchers at the University of Utah have discovered that vocal cords can be stretched and stiffened to predict an animal's pitch range, revealing evolutionary roots of voice. The study suggests that singers can increase their ranges by stretching their vocal cords or engaging in exercises that affect fiber spacing and cord stiffness.
A novel theory of animal evolution suggests that a biochemical oscillator named Life's Timekeeper controls cell maintenance and repair, determining cell longevity. This mechanism is believed to have driven the extension of cell longevity in animals, leading to the development of complex organisms.
A new study in Cell Reports found that macaques have a third set of neurons in their sensory cortex that respond optimally to curved motion. This discovery provides insights into how animals navigate through three-dimensional spaces and could have implications for human balance and movement.
Scientists discovered that wapitis produce two mechanisms to create their eerie calls: a low-pitched roar matching their size and a high-pitched whistle using nasal cavities. This unusual adaptation allows wapitis to communicate accurately despite their large size.
Researchers found that bats exposed to prolonged loud noise showed minimal sensitivity loss, with only a slight decrease of 0.6 decibels over 24 hours. This natural resiliency may hold clues for developing devices or implants to help humans cope with loud noises.
Researchers have captured a snapshot of how coronaviruses enter cells using high-resolution cryo-electron microscopy. The atomic model suggests specific vaccine strategies against SARS-CoV and MERS-CoV. A fusion peptide on the outer edge of the spike protein may be an ideal target for neutralizing coronaviruses.
Researchers estimate that 69 out of 100 male lions will die from age-independent causes, mostly killed by trophy hunters or local farmers. This puts the entire lion population at risk, disrupting social structures and leading to increased mortality rates.
MIT neuroscientists identify the brain region responsible for feelings of loneliness and increased sociability after isolation. This discovery provides a starting point for studying loneliness-like states and their neural mechanisms.
Researchers have discovered significant differences in the number of neurons in nematode ventral cords across various species, suggesting that neuron number and anatomy may have evolved multiple times. This variation could lead to the development of more targeted nematicides to control plant-parasitic nematodes.
Scientists report a new detection method for identifying aromatase inhibitor use in horses, increasing chances of catching cheaters by 2-2.5 times longer than conventional methods.
Researchers suggest that a single mutation in protein interactions was crucial for the transition from single-celled to multi-cellular organisms. This discovery has implications for understanding disease states, such as cancer, where damaged cells can revert to a unicellular state.
Sherborn's monumental work, Index Animalium, provides a rigid framework for knowledge and has remained the most complete reference source for animal nomenclature. Biodiversity informatics aims to build on his work, expanding to be digital, diversified, and accessible.
A recent study published in Nature finds a sharp decline in the association of plant and animal species over the last 6,000 years. This shift is attributed to human population growth and agricultural practices, which have led to changes in ecological conditions.
Researchers at Oregon State University have developed a 'spring-mass' walking system that combines passive dynamics with computer control, allowing robots to blindly react to rough terrain and maintain balance. The technology has the potential to enhance legged robots and enable new roles in industries such as manufacturing and firefig...
Researchers found that great apes can remember and anticipate memorable events from a single viewing of a movie, using anticipatory looks to track impending events. The study used eye-tracking technology to test the apes' ability to recall and anticipate events in two different films.
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.
A study found that intestinal parasites, such as Giardia, were the most commonly found parasite in cats across Austria, with over 56% testing positive. The parasites can be transmitted through contact with infected cat faeces, and households with multiple cats are at higher risk.
Researchers at Uppsala University mapped the genetic structure and evolution of the W chromosome in birds, finding that it does not contain genes leading to female development. The W chromosome instead serves as a buffer for females with one copy of the X chromosome, allowing certain genes to work.
Archaeologists uncovered a complete camel skeleton in Tulln, Austria, dating back to the 17th century, shedding light on camel use in Central Europe. The hybrid camel, with a dromedary mother and Bactrian father, was likely used for military transportation, not food.
A new study by Karolinska Institutet researchers found that the language used to switch genes on and off has remained conserved across millions of years of evolution. The differences between species reside in the content and length of these instructions, with specific transcription factors recognizing unique DNA words.
The EU's new regulation on invasive alien species aims to combat one of the greatest threats to biodiversity, with around 12,000 species currently in the EU. The legislation incorporates the findings of the DAISIE research project and will list prioritized species for transnational threats.
Researchers developed a low-cost focus stacking setup that produces better results than high-end solutions, ideal for mass digitization programs. The system uses consumer-grade products and is easy to control, allowing for high-quality macro photography at a fraction of the cost.
A recent study published in the Royal Society journal Interface suggests that humans have evolved to rely too heavily on social information, leading to a decrease in responsiveness to changes in their environment. This phenomenon, known as herd mentality, can result in groups becoming less effective at making decisions.
Scientists found that oxygen levels during the Proterozoic period were only 0.1% of today's conditions, making it difficult for animal life to emerge. This new study suggests that low oxygen levels may have delayed the rise of animals on Earth.
A study published in Nature Communications reveals that the evolution of competitiveness tends to diversify, with some individuals avoiding competition and others investing heavily. This divergence can lead to population extinction if external pressures fuel an 'arm's race' towards higher competitiveness.
Scientists discovered a new land snail species, Aegista diversifamilia, in eastern Taiwan, confirming previous suggestions of cryptic species within the previously identified A. subchinensis. The new species is larger and has a different shell shape than A. subchinensis, highlighting the importance of biogeographic barriers.
A new study published by Oregon State University researchers found that a compound called xanthohumol, found in hops and beer, enhances cognitive flexibility in young mice. However, it had no effect on older mice or their learning and cognitive performance.
A recent UCL study discovered that the human habenula, a tiny part of the brain, tracks expectations about negative events like painful electric shocks. This tiny region suppresses dopamine, driving motivation, and its activation can signal how bad outcomes are expected.
Researchers found three diseases have failed to receive official recognition and funding, impacting human and animal health in developing nations. A multidisciplinary One Health approach could improve human and animal health and control these diseases.
A UCLA study reveals that genuine laughs share acoustic properties with animal laughter, while fake laughs sound distinct, suggesting humans have evolved to detect deception through laughter. The researchers analyzed recordings of real and fake laughs, finding breathy sounds were more prevalent in genuine laughs.
A new study published in PeerJ reveals that bold baboons are more likely to learn and demonstrate new skills to others, while shy individuals watch but do not participate. Personality differences play a significant role in social learning among animals, challenging previous assumptions about animal cognition.
Researchers developed a portable ventilation pump for large animals, improving the safety of veterinarians treating patients in the field. The device is easy to use and inexpensive, allowing veterinarians to provide emergency first aid without relying on conventional equipment.
A large genetic analysis of MERS-CoV genomes suggests the virus has transmitted from animals to humans on multiple occasions. The study found that the virus evolved quickly and spread between locations, making it unlikely that a single transmission occurred. Further animal studies are needed to establish the source of the virus.
Researchers suggest that trypophobia may stem from a specific visual feature common to poisonous animals, including high contrast energy at midrange spatial frequencies. Studies exploring the phenomenon are underway to shed light on its ingrained nature in everyday objects.
A study published in Restorative Neurology and Neuroscience demonstrates that intracerebral injection of bone-marrow-derived mesenchymal stem cells reduces cognitive deficits produced by temporary occlusion of cerebral blood vessels in a rat model of stroke.
Researchers at Austria's Wolf Science Center found that wolves howl more when a wolf with a better relationship leaves the group and when that individual is high in social rank. The study suggests that howling is not solely a stress response but rather a flexible way to maintain contact and reunite with allies.
A team of Lawrence Livermore National Laboratory scientists, led by Monica Borucki, has made promising new discoveries about the emergence of inter-species transmittable viruses. They found that genetic diversity within a host animal can allow a virus to adapt and reach a human host, advancing our understanding of how new viruses spread.
A new species of scorpion has been discovered in the Ecuadorian Andes, featuring a unique reddish-brown coloration with three longitudinal brown stripes. This discovery expands our knowledge of scorpion diversity in the region, which is considered a global epicenter of biodiversity.
Research from Monash University reveals that human hip evolution was simpler than previously thought, with key elements present in fish ancestors. The study found that major changes could be made in just a few evolutionary steps.
A new study finds weak support for the dilution effect, which suggests that higher biodiversity reduces disease transmission from animals to humans. Instead, researchers found variable links between biodiversity and disease prevalence, influenced by disease systems, local ecology, and human social context.
Researchers at the University of Alberta have made a breakthrough in understanding how prion diseases spread between different types of animals. By studying the adaptation process, they aim to determine why certain strains can infect one type of animal but not another.
A new species of scorpion, Vaejovis brysoni, was found in the Santa Catalina Mountains near metropolitan Tucson, Arizona. The discovery is significant as it represents the first documented case of two vorhiesi group species inhabiting the same mountain range.
A University of Missouri study failed to replicate previous research on the toxic effects of BPA and genistein, two chemicals that have been linked to obesity and type 2 diabetes in humans. The findings suggest that the chemicals may not have the same adverse effects as previously reported, highlighting the need for more reliable data ...
Researchers found that bonobos will share food with a stranger before an acquaintance in a series of experiments. In most cases, the test subject chose to release the stranger first, even when there was no social interaction afterwards. This behavior contrasts with chimpanzees and highlights the unique social dynamics of bonobos.
A recent study using computer modelling shed light on the origin of sight in animals, including humans. The researchers found that the ability to detect light developed over a span of 11 million years from a 'blind' opsin ancestor.
Researchers at U of A have found fossilized tracks of a primitive bilaterian animal from 585 million years ago, indicating the presence of soft-bodied animals on Earth 30 million years earlier than previously thought. The discovery provides new insights into the evolution of animal life and its adaptation to environmental conditions.
A study published in Nature reveals that Australopithecus sediba consumed between 95 and 100 percent forest-based foods, contradicting the assumption that early hominins ate a varied diet. This finding provides insight into the dietary habits of our ancestors and sheds light on why some species thrived while others became extinct.
Research investigated Italian endemic flora's chromosome number variation and its connection to polyploidy. Statistical analysis revealed a significant link between higher even ploidy levels and lower species frequencies.
Researchers discovered that mice with an extra copy of the tumor suppressor Pten gene experience hyperactive brown fat, burning energy instead of storing it. This leads to improved metabolic balance, reduced insulin resistance, and lower liver fat, contributing to longer lifespan and cancer prevention.
A bizarre 'tulip-shaped' creature, Siphusauctum gregarium, has been discovered in the Canadian Rockies from Middle Cambrian Burgess Shale fossils. The unique filter feeding system challenges current knowledge of animal evolution.
Researchers found that the loss of elephant bones at Gesher Benot Ya'aqov site may have imposed significant nutritional stress on Homo erectus. This led to a shift towards hunting smaller prey, which is evident in the physical appearance of modern humans and suggests their emergence in the Middle East 400,000 years ago.
A recent study reveals a diverse range of microscopic animals in soils from tropical forests to tundra and boreal forests. The research found that each ecosystem has its unique set of soil animals, contradicting the long-held assumption that diversity decreases at higher latitudes.
Researchers found that male koalas produce lower resonances in their bellows, which may be related to the length of their vocal tracts. The team also discovered that koalas can make themselves sound larger than they are by using simultaneous resonance in their oral and nasal tracts.
Researchers found that hyenas can count individual voices and assess their numerical advantage, supporting the concept of complex social groups leading to big brain evolution. Hyenas were more cautious when outnumbered and took risks with a numerical advantage.
Researchers discovered that ancient microbial mats could produce enough oxygen to support tiny, mobile life forms billions of years ago. The study challenges the long-held assumption that oxygen was necessary for animal evolution.
Research suggests that oxygen-depleted waters during the Neoproterozoic era, due to a global ice sheet, may have enabled the survival of early life forms. This harsh climate could have been a vital step in the evolution of animals.