Articles tagged with Animal Locomotion
A study found that yellow-morph green sea turtles in the Galápagos prefer to stay in shallow coastal waters and rarely venture far from a single island. The turtles' home ranges varied greatly, but most preferred to stay within 1,498 sq km of their starting point.
Researchers have identified a hardy sea sponge that can thrive in polluted harbor habitats, demonstrating an exceptional ability to adapt and even reproduce asexually. The chicken kidney sponge showed outstanding resilience and was found to be particularly effective at filtering pollutants and recycling nutrients.
Researchers analyzed shark vertebrae to discover a finely engineered biomechanical system supporting strength, flexibility, and swimming efficiency. Different species evolved unique internal structures reflecting their varied swimming strategies.
Researchers at Brown University have developed an aerodynamic model that simulates the forces at play when birds fly in a V formation. The model shows that birds experience an 11% reduction in mechanical power needed for flight due to reduced wing flapping, leading to significant energy savings.
A new video game, 'Run FoVE your life,' simulates high-intensity movement dynamics and energetics of cheetah chases, incorporating real movement data from human athletes in chase-tag games. The game aims to further understanding of fatigue and movement decision-making in life-or-death encounters.
A new study has found that changes in a senior dog's gait can be an early warning sign of dementia. The research tracked the stride length of 88 geriatric dogs over time, revealing a significant decrease in front leg stride length with worsening cognitive decline. This change was found to be more pronounced than age-related decline alone.
Researchers found that octopuses can use mirrors to find food out of sight, displaying spatial cognitive abilities. The study shows that octopuses traveled to the correct side approximately 73% of the time when searching for a reward.
Researchers developed a 'walking fish' robot that mimics modern fish's ability to walk on land, and computer models showed similar modes of locomotion across several unrelated species. This undulating tripod gait is one of life's most ancient solutions to escaping predators or moving habitats.
A team of researchers from The University of Osaka used supercomputer simulations to study how vortices generated by dolphin kicks power fast swimming. They found that large, powerful vortices created by the movement of the dolphin's tail are responsible for most of the propulsion, while smaller ones contribute little to forward motion.
Researchers found that crabs' iconic sideways walk originated from a single, forward-walking ancestor around 200 million years ago. This rare innovation likely contributed to the ecological success of true crabs by making their escape direction unpredictable.
The study, led by Lucy Liu and L. Mahadevan, shows that adding the right amount of noise to individual robot movements can ease gridlock and improve efficiency in crowded environments. The researchers used computer simulations and experiments with small robots to test their ideas.
Researchers tracked the impact of beach nourishment on nearshore conditions and marine life, finding that prolonged turbidity can interfere with blacktip shark hunting and increase accidental encounters. The study highlights a delicate balance between coastal engineering projects and marine ecosystem protection.
Researchers at Binghamton University found a significant shift in moth flight patterns over a century, with some species emerging later in the year. The study also identified missing moth species in the region, highlighting the impact of anthropogenic change on ecosystems.
Researchers discovered a simple strategy for snakes to stand upright without limbs, concentrating bending and muscle activity into a short boundary layer near their base. This approach reduces energy required while maintaining balance, offering design principles for soft robots and medical devices.
Researchers have developed a new method to map the location of honey bee 'dance floors,' where forager bees perform waggle dances. This method allows for accurate quantification and comparison of waggle dance regions, enabling better understanding of honey bee communication.
Researchers analyzed downward climbing behaviors in 21 small-to-medium-sized arboreal mammal species to understand early primate evolution. They found primates used tail-first and side postures more often than non-primates, suggesting upright postures evolved to adapt to tree environments.
A research team used drones to study feral horse units in Portugal, finding that they dynamically adjust their shape and distance to avoid conflict with neighboring groups. Exceptionally, a 'friendly pair' showed high social tolerance, consistently approaching and mixing members.
A team of Princeton engineers studied grasshopper gliding to develop a model for multimodal locomotion in tiny robots. They successfully created a glider that can fold its wings and change strategies depending on the situation, achieving performance comparable to actual grasshoppers.
A study published in eLife reveals how kangaroos increase their hopping speeds without incurring an associated energetic cost. By adjusting their posture, kangaroos reduce tendon stress and energy storage, allowing them to maintain the same amount of net work at the ankle, regardless of speed.
Researchers discovered a new 233-million-year-old nonflying relative of pterosaurs that provided breakthrough insights into the evolution of flight in these animals. The study found that pterosaurs evolved their own 'flight computers' from scratch, with unique brain structures and smaller brain sizes compared to birds.
A recent study published in Integrative and Comparative Biology found that bonnethead sharks' skin undergoes significant changes as they mature, with younger sharks having fewer ridges on their denticles. These changes likely improve swimming performance and protect the skin from predators or injuries.
A new study by Florida Atlantic University reveals that every arm is capable of performing all action types, with front arms mainly used for exploration and back arms supporting movement. Octopuses demonstrated remarkable flexibility, showcasing complex motor control.
A new study from Lund University shows that migratory birds are most efficient at an intermediate flying speed, with energy conversion efficiency reaching up to 15% of metabolic energy. This discovery helps construct more accurate models of bird flight and explains how small birds complete transcontinental journeys.
A new study finds that sargassum seaweed can significantly slow down sea turtle hatchlings in Florida, increasing their risk of predation and heat exposure. Researchers found that even small amounts of sargassum can impede hatchlings' progress, with leatherbacks taking 54% longer to crawl through light sargassum.
A team of researchers has developed a robot with self-morphing, wing-like feet that mimic the agile movements of water striders. The insect-scale robot enhances surface maneuverability and can execute sharp turns in just 50 milliseconds, rivaling the rapid aerial maneuvers of flying flies.
Researchers at Monterey Bay Aquarium Research Institute used the EyeRIS camera system to track the movements of deep-sea pearl octopuses. The study revealed simplified control mechanisms in their arms, which could inspire the design of octopus-inspired robots.
Researchers captured unique footage of Indian Ocean seabirds catching flying fish in mid-air using lightweight cameras. The study showed that these birds exploit windy conditions to conserve energy while hunting, suggesting a possible adaptation to patchy food sources.
Researchers mapped the range of movement in Olenoides serratus trilobite limbs, shedding light on their behavior and function. The study revealed a simpler, functional limb design with limited extension range, allowing them to walk, burrow, and forage.
Researchers from Florida Atlantic University's Harbor Branch Oceanographic Institute have developed a multi-sensor biologging tag on the whitespotted eagle ray, enabling long attachment times and detailed data collection. The study provides insights into the rays' behavior, habitat use, and social interactions.
A new study reveals that koalas only spend around 10 minutes per day on the ground, which is linked to two-thirds of recorded koala deaths. The research used GPS loggers and accelerometers to analyze fine-scale movement patterns, finding that koalas move with little urgency and spend most of their time in trees.
Researchers from Empa's Soft Kinetic group studied the rare scaly-tailed squirrels' unique bodily structure, discovering that their thorn-covered scales help them maintain position and grip onto tree bark. The study aims to inform robotics by adopting morphological structures and behaviors honed through millions of years of evolution.
A team led by L. Mahadevan found that young anacondas can execute a quick, one-off skating movement called the 'S-start' due to their physical attributes. This movement is similar to sidewinding and could inspire new robotic systems.
A team of researchers at Princeton University and Harvard found that fish schools do not form diamond shapes as previously believed. Instead, they adopt a dynamic ladder pattern, allowing them to stagger in multiple planes and reduce energy expenditure.
A study by the CSIC-UMH Institute of Neurosciences uncovers how flies' flight stabilizers, the halteres, take shape. The structure is stabilized by a sophisticated cellular system that connects its two surfaces through an internal framework.
Researchers found that harbour seals can determine their heading from optic flow fields, even in cloudy or opaque water. The team created a gaming challenge for the seals, using particle simulations to show them which direction they were moving in, and found that they consistently chose the correct direction.
A new study compares the genome sequence of bed bugs that live with humans and those that don't, finding that human-associated bed bugs recovered and increased in population size over time. The research suggests that humans may have inadvertently led to the emergence of modern bed bug pests.
Researchers from OIST and Hebrew University developed a novel method to measure energy usage during movement using video and 3D-tracking via deep learning. This innovative approach expands the study of movement energy in ecology, physiology, and beyond, enabling the accurate measurement of energy consumption in smaller animal species.
A study by University College London anthropologists found that macaque mothers experience a short period of physical restlessness after the death of an infant, but do not exhibit typical human signs of grief. In contrast to human bereavement, macaque mothers spent less time resting in the first two weeks after their infants' deaths.
A new framework helps scientists predict where and when animals will move in rapidly changing environments, addressing a pressing problem in the field of animal ecology. The study focuses on incorporating biological mechanisms into models to develop better predictions, which can inform effective wildlife management and policy.
A new study in PLOS One reveals over 130 dinosaur footprints on the Isle of Skye, providing insight into their distribution and behavior. The trackways suggest large theropods like Megalosaurus and sauropods like Cetiosaurus strolled through ancient subtropical lagoons.
New research reveals mammals were shifting toward a more ground-based lifestyle several million years before the dinosaurs' mass extinction event. Analyzing small-fossilized bone fragments, scientists found signs of locomotory habit in end of limb bones from marsupial and placental mammals.
Antarctic krill exhibit sudden changes in behavior when exposed to the water-borne smell of penguin poo, showing increased speed, turns, and reduced foraging efficiency. This 'zigzagging' is an avoidance reaction that may increase their odds of survival in a swarm.
Researchers designed a hopping robot based on studies of leaping squirrels, which can stick a landing on narrow perches. The robot uses strategies similar to those employed by squirrels when landing, including directing force through the shoulder joint and grasping the branch with its feet.
Researchers studied the musky rat-kangaroo's movement patterns, observing a unique 'bound' gait that differs from other marsupials. The findings suggest a potential pathway to the evolution of bipedal hopping in kangaroos, with future studies informed by fossil discoveries.
Researchers used a novel approach to estimate megalodon's body length and shape, finding it closer in shape to a lemon shark or large whale. The study suggests the prehistoric predator may have reached about 80 feet in length and weighed an estimated 94 tons.
Researchers compared feathers and bodies of flightless birds and their flying relatives, finding that some features change relatively quickly. The study sheds light on evolution of complex traits that lose original function, and could help reveal which fossil birds were flightless.
Researchers tracked 131 juvenile sea turtles and found they may be active swimmers during their early life stage, challenging existing hypotheses. The study provides important data for assessing risks from human activity and informing conservation efforts.
Cricket frogs use a combination of underwater push and leg movement to propel themselves out of the water, resulting in a 'belly flop' motion. This discovery could lead to advancements in bio-inspired robotics and water testing systems.
Researchers at Nagoya University have discovered a unique motor control system in frogfish's first dorsal fin, enabling their 'fishing' behavior. The study reveals how motor neurons changed location as their function shifted from swimming to hunting.
Researchers found that slingshot spiders can listen for approaching insects before releasing their web to catapult forward and capture prey. The spiders use sound-sensitive hairs on their legs to detect the vibrations from the insects' wings, allowing them to deploy their webs in mid-air.
Researchers at ISTA and Columbia University developed a technique using adeno-associated viruses (AAVs) to track a frog's nervous system throughout its metamorphosis, shedding light on the neural circuit and behavior changes during this transition. The breakthrough can help usher amphibian neurobiology into a new era.
The MIT team fabricated a simple water filter modeled after the mobula ray's plankton-filtering features and studied its performance. They found that the ray's filtering features are broadly similar to industrial cross-flow filters, which could inform design of water treatment systems.
Researchers from Tohoku University and partners developed a decentralized control system to analyze plesiosaur locomotion, accounting for motion adjustment. The system successfully recreated coordinated flippers patterns in response to changes in flapping cycle and morphology.
Scientists used acoustic mapping technique to track vulnerable capelin species and observe massive predation event involving Atlantic cod. The study revealed that as climate change causes Arctic ice sheet to retreat, capelin will be more stressed and vulnerable to natural predation events.
Researchers are developing energy-efficient robots inspired by ancient fish and fossils to simulate their anatomy and behavior. The team aims to test hypotheses about how early animals evolved and moved, providing insights into the transition from water to land.
The study found that monarchs are dying off during their fall migration south to Mexico, with roost sizes declining by as much as 80%. Climate change is not believed to be the primary cause, but rather a debilitating parasite and captive breeding may be to blame.
Researchers used accelerometers to observe the movement and behavior of green turtle hatchlings as they emerge from their nests. The findings show that hatchlings maintain a head-up orientation and move vertically through the sand by rocking forwards and backwards.
The study reveals that sea robin legs are sensitive to both mechanical and chemical stimuli, and are covered in papillae similar to human taste buds. The research provides new insights into the evolution of this unique trait, which could offer clues about how humans developed bipedalism.
Researchers discovered that sea robins' legs are covered in sensory papillae with taste receptors, allowing them to detect and uncover food. The findings reveal an ancient gene controlling leg development and sensory organ formation, shedding light on the evolution of complex traits in wild organisms.
Researchers used drone footage to study gray whales' foraging behaviors, finding that younger whales use forward swimming while older whales headstand. The study also revealed that bubble blasts help regulate buoyancy while feeding in shallow water.