Articles tagged with Animal Science
A new snake family, Micrelapidae, was identified through an international study led by Tel Aviv University researcher Prof. Shai Meiri. The family includes only three species, two in Africa and one in Israel, and diverged from the rest of the evolutionary tree about 50 million years ago.
Scientists have discovered a previously unknown lineage of elephant bird that roamed the wet, forested landscapes of northeastern Madagascar, using ancient eggshell DNA. This breakthrough reveals new insights into the diversity of birds that once inhabited Earth and provides clues about their extinction.
A new spider genus, Abba transversa, has been discovered in Australia, featuring distinctive dark spots and thick macrosetae on the legs. The genus was named after the Swedish pop group ABBA and is the result of a comprehensive study of orb-weaving spiders.
Researchers successfully recorded brain activity from freely moving octopuses, using implantable data loggers and electrodes. The study provides key findings on the neural mechanisms controlling octopus behavior, including patterns of brain activity similar to those in mammals.
Researchers have long observed that animals respond to magnetic fields, but the exact nature of this 'magnetic sense' remains unclear. A new review provides an overview of the field, including methods used to study magnetoreception, such as GPS tracking and tissue manipulation.
A team of researchers led by Wes Osburn, Ph.D., has made a breakthrough in developing an amino acid-based alternative curing method for meat and poultry products without adding sodium nitrite. This new technique uses L-arginine to activate the nitric oxide synthase system, generating nitric oxide and residual nitrite naturally.
A new study found that human contact, including neck scratches, can reduce stress and improve well-being in weaning dairy calves. The research showed that calves housed alone benefited most from the extra human interaction, leading to decreased sucking behaviors and increased rest after meals.
A team of researchers at Kyoto University found that the brown lemur is responsible for regenerating large fruit trees in Madagascar's Ankarafantsika National Park. The study shows that lemur seed dispersal can lead to a 1.5% survival rate of seeds, contributing significantly to forest diversity.
Male giraffes test female sexual receptivity by nudging them to urinate, then inhaling their scent with flehmen. This behavior is crucial for mating and understanding giraffe anatomy supports it.
Researchers found that nectar-feeding bats rely on extra-long whiskers to navigate flowers while feeding, providing enhanced spatial information. Clipping whiskers reduced agility but didn't impact feeding ability.
Scientists at Nagoya University developed an index to estimate a bird's wing use based on coracoid bone strength and body mass. This new tool sheds light on how ancient birds evolved to fly, including the flapping abilities of extinct species.
A 319-million-year-old fossilized fish has provided the oldest example of a well-preserved vertebrate brain, shedding new light on the neural anatomy and early evolution of ray-finned fishes. The discovery reveals that brain evolution in these animals unfolded more complexly than previously thought.
Researchers discovered a single protein called Gr8a that plays an inhibitory role in mating decision-making, helping flies avoid inter-breeding with the wrong partner. The findings provide insight into how signal production and perception are tied together, shedding light on pheromone communication.
A study analyzed 105 cat interactions to categorize them into playful, aggressive, or intermediate groups. The majority (56.2%) were classified as playful, while 28.6% were agonistic. Intermediate behavior was observed in 15.2% of cats, exhibiting characteristics of both play and aggression.
Researchers developed bioprinted artificial skin that mimics human skin, reducing animal testing in cosmetics and pharmaceutical industries. The model achieved similar results as traditionally produced models, passing international validation tests, including barrier function and irritant response assessment.
Researchers at Tokyo University of Agriculture and Technology discovered a novel amyloid protein, α-S1 casein, which can cause disease in humans. The study found that overexpression and N-terminal truncation of α-S1-casein led to its formation as an amyloid protein.
Researchers discovered that baboons employ an efficient strategy to transition from quadrupedal to bipedal walking by 'crouching' their hindlimbs and 'sprinting' them forward under their torso. This process enables the animals to maintain a natural gait while standing upright, requiring minimal energy expenditure.
A new study estimates that Madagascar's unique modern mammal species could take 23 million years to evolve if the endangered ones go extinct, highlighting the urgent need for conservation action. The island's biodiversity is threatened by habitat loss and human activities.
Researchers added 146 new animal, plant, and fungi species to the tree of life, including 44 lizards, 30 ants, and 14 sea slugs. This discovery highlights the importance of protecting island ecosystems and advancing biodiversity science for conservation action.
The report highlights that European taxonomic expertise is declining, with nearly half of insect orders not covered by sufficient scientists. The lack of expertise correlates with GDP and is more pronounced in biodiverse countries, posing significant problems for species conservation.
A study by McGill University researchers found that Northern Tree Shrews' body size increased with warmer climates, contradicting Bergmann's rule. The team analyzed museum specimens and historical climate data, revealing a reversal of the Island rule as well, highlighting the complex interaction between ecological factors.
In a surprising twist, researchers found that starving Argentine ants exercise caution when foraging in high-risk environments, unlike expectations. This counterintuitive strategy may contribute to their success as an invasive species and agricultural pest.
A new study found that different populations of the same marine species have varying thermal limits, and connecting them could ensure survival in a warming world. This approach offers a window of hope for adaptation and conservation practices.
A new study found that when there are more females than males in colonies of orb-weaving spiders, males fight less with each other and females exhibit less aggression. The researchers also observed cooperation among spiders in constructing their webs and wrapping prey in silk.
A study by Rice University researchers found that tropical mammal communities divide their days similarly, with feeding routines and body sizes influencing activity patterns. The study confirms consistent patterns across Africa, Asia, and the Americas.
Steaming hay kills harmful microorganisms, but damages proteins making them less digestible for horses. This can lead to impaired muscle development and nutrient deficiencies, affecting growth and coat health. Horses can be enriched with protein-rich feedstuffs to mitigate this risk.
A team of scientists found that bats have multiple copies of the PKR gene, allowing them to develop an antiviral repertoire. This adaptation enables bats to defend themselves against a wide range of viruses.
Researchers found that high oleic soybean oil improved growth performance and carcass characteristics in pigs, with minimal impact on fat thickness and lean percentage. The studies also showed that HOSO-fed pigs had thicker, firmer bellies and similar loin quality compared to DDGS-fed pigs.
A large-scale analysis of over 2,700 species of anurans reveals that the vertebral stripe evolves repeatedly and is adaptive to the animal's habitat. The study identifies a key gene linked to the stripe pattern, which may allow species to adapt to environmental changes.
Researchers have discovered that the flight patterns of birds can be used to estimate fine-scale environmental conditions and turbulence levels. The team measured bird altitude and motion using GPS and data loggers attached to pigeons, finding a correlation between the birds' behavior and turbulence strength.
Researchers found drastic differences in microglia marker Iba1 and factors influencing Sirt1 levels and activity between elder groups. Preserving microglia and Sirt1 functional efficiency is crucial for longevity.
Researchers discovered that cephalopods develop their large nervous systems using similar mechanisms as vertebrates, with a focus on the retina. This study provides insight into the developmental process of these intelligent creatures and could lead to new discoveries about human brain development.
A new study published in PNAS found that female and male Japanese termites can flip sex roles to form stable same-sex pairs. The researchers discovered that this 'sex role flexibility' allows same-sex pairings to evolve, enabling termites to survive and thrive.
A study of 104 domestic pigs found that a bystander pig can intervene to reduce aggressor attacks or victim anxiety after conflict. Reconciliation behavior was more common among distantly related pigs, indicating they may prioritize social support over family ties.
A study found that Eurasian jays with greater self-control can pass a version of the 'marshmallow test' and score higher on intelligence tests. The researchers believe that this self-control may have evolved as a result of the birds' need to delay gratification in order to plan for future meals.
Researchers from Humboldt University of Berlin and Leibniz Institute for Zoo and Wildlife Research examined the facial motor nucleus of African and Asian elephants. They found more facial motor neurons than any other terrestrial mammal, with African savanna elephants having up to 63,000 neurons.
A study of 16 cats found they can differentiate their owner's voice from a stranger's, even when tone is changed. This suggests that cats form strong bonds with their owners based on experience of the speaker's voice.
A joint study by TAU and Hebrew University accurately dated 21 destruction layers at 17 archaeological sites in Israel, using geomagnetic field reconstruction. The new data verify Biblical accounts of Egyptian, Aramean, Assyrian, and Babylonian military campaigns against the Kingdoms of Israel and Judah.
A University of Exeter graduate has discovered a new, animal-free method to create human neuron-like cells for studying brain development. The breakthrough could lead to better treatments for brain disorders and improve human quality of life.
A recent study found that cats and coyotes share green spaces in Los Angeles suburb Culver City, leading to increased cat mortality. Cats displayed more nocturnal behavior than typical urban cats, explaining high rates of cat deaths. The study recommends restricting outdoor cat access to mitigate human-wildlife conflict
Researchers found pelagic seabirds fly into the eye of a storm to reduce risk of injury or death. The birds' unique flight style allows them to navigate strong winds.
A team of scientists and high school students collaborated to study Hong Kong's soil biodiversity, collecting 3,588 individual samples and identifying 150 species. The project also raised public awareness about the importance of citizen science in understanding local biodiversity.
Researchers from Xi'an Jiaotong-Liverpool University found that brain stimulation combined with a nose spray containing nanoparticles can improve recovery after ischemic stroke. The treatment increased cognitive and motor functions, and weighed more quickly than those treated with TMS alone.
A recent study found that cattle grazing with virtual fencing can create effective wildfire fuel breaks on sagebrush landscapes, reducing the risk of devastating wildfires. The technology uses collars to communicate with GPS and reception towers, forming a virtual fence to manage livestock distribution.
Researchers found that kinship dynamics vary across species and sex, influencing helping behavior. In spotted hyenas, females' relatedness decreases with age, while males' increases, affecting their willingness to help groupmates.
The study revealed an alternative pathway for cysteine biosynthesis in animals, using enzymes similar to those found in fungi and bacteria. This challenges the previous assumption that corals rely on symbiotic relationships with algae for cysteine production.
A recent Oregon State University study found that spent hemp biomass is a safe and nutritious alternative feed for lambs, with nutritional quality comparable to alfalfa. The findings provide evidence for the use of hemp byproducts as an animal feedstuff, potentially offering economic benefits for hemp farmers and livestock producers.
Researchers found woodpeckers have brain regions similar to those in songbirds that control vocal learning and production. The study suggests drumming is a learned behavior with complex motor movements and adaptations for territorial defense.
Researchers found that developing sea anemones use hydraulic muscles to regulate body pressure and sculpt tissue. The more active larvae are, the longer they take to develop, suggesting a trade-off between movement and growth.
A University of Missouri researcher and his team are using artificial intelligence to study anatomical research, creating detailed 3D computer models of muscles. This technology is advancing the field by enabling researchers to analyze muscle fiber orientation and develop a better understanding of motor control in animals.
A new study reveals that red-eyed treefrogs use bimodal acoustic calls, combining sound with plant-generated vibrations to convey messages. Female frogs prefer calls with both sound and vibration, while male frogs become more aggressive when feeling the vibrations of rival calls.
A study by MIT and WHOI scientists found that shy albatross males are more likely to divorce their mates, while bold males are more likely to stay together. This is the first study to link personality and divorce in a wild animal species.
Researchers Dr Zoe Doubleday and Dr Jasmin Martino created a map of ocean chemistry that distinguishes the origin of seafood between south-east Asia and southern Australia. The universal chemical fingerprints can track where individual seafood comes from, helping to combat seafood fraud and ensure consumer trust.
In southern Sydney, cockatoos have developed a unique behavior of opening garbage bins to eat food waste. Humans have responded by using various inventive methods to secure the bins, sparking an 'arms race' between the two species.
Paleontologists at Tübingen University's Senckenberg Centre have discovered a previously unknown genus and species of dinosaur, Tuebingosaurus maierfritzorum. The herbivore lived in the Swabian Alb region from 203 to 211 million years ago, displaying similarities with large long-necked sauropods.
Researchers found that mice from western sides of mountains in Patagonia were bigger due to increased food availability caused by higher rainfall. This discovery supports the rain shadow effect hypothesis, which suggests that precipitation patterns can impact mammal size.
A study by Nagoya University found that the quality of a thoroughbred's sire, not its broodmare's age, determines its racing success. The researchers analyzed data from over 15,000 horses and discovered that breeding older females with high-performing males resulted in lower win rates.
A study by Florida Atlantic University researchers compared the walking and swimming behaviors of neonate and juvenile epaulette sharks. Contrary to expectations, results showed that differences in body shape did not alter kinematics between early life stages, suggesting a consistent locomotor performance.
A recent study found that isolating horses can lead to stress-related immunomodulations, weakening their immune systems. The researchers discovered that single housing caused these changes, regardless of the group composition, highlighting the importance of social interaction for horse health.
A large international team has reexamined the Saccorhytus microfossil and determined that it is actually a protostome, not a deuterostome as previously believed. This finding contradicts current understanding of animal evolution, suggesting a significant gap in the fossil record.