Articles tagged with Ethology
A recent study challenges traditional views of bacterial life, finding that biofilms exhibit characteristics similar to animal embryogenesis. Researchers discovered that bacteria follow a developmental pattern, with stage-organized architecture and increased use of multicellularity genes, similar to those found in animal development.
Researchers propose a framework for capturing mathematical structure underlying moving animals, finding unexpected connections to energy-conserving phenomena. Chaos theory suggests that animal behavior becomes increasingly unpredictable over time, with divergence occurring within a single second.
A central neural circuit in the forebrain to the hypothalamus mediates chronic stress-induced bone loss via the peripheral sympathetic nervous system. Isolation significantly increases anxiety levels, inducing bone loss in human subjects.
Researchers tracked acorn woodpecker warriors using radio tags, finding they fight for days-long to win territories, while spectators travel great distances to collect social information from the battles. The complex social behavior of woodpeckers reveals intricate networks and rivalries among the birds.
A study comparing young hand-raised wolves and dogs found that dogs are more tractable than wolves, especially in contexts involving access to resources. Dogs were more prepared to follow human initiation of action, but this difference diminished with age.
Researchers at the Champalimaud Centre for the Unknown found that social experiences during the first week of development impact zebrafish behaviour at an early larval stage. Isolated larvae showed stronger escape swims in response to local water vibrations, indicating a lasting effect.
A study published in Biology Letters found that house sparrows can learn from each other's behavior and become more daring when approaching new objects. After being paired with a more confident partner, cautious birds were 2.6 times more likely to feed near a new object.
A groundbreaking international research network will study how animals use odor information to guide behavior, aiming to understand the brain's evolution and potential applications in robotics and disease research. The project, led by CU Boulder, will reverse-engineer how the brain interprets odors and activate motor circuits.
Scientists discovered that a specific brain pathway is crucial for motivation but not for reward-driven learning. The research may lead to more precise interventions and effective therapies for psychiatric disorders.
Researchers at NYU Tandon used a novel approach called 'behavioral teleporting' to study social interactions in live zebrafish. The system allowed them to isolate critical elements of animal behavior and explore predator/prey relationships without posing a risk to the animals.
A study found that a specific genetic variation associated with communal behavior in non-human animals also affects human romantic relationship dynamics. Individuals with this variation reported higher levels of affection, fewer negative feelings, and improved relationship adjustment.
A new study reveals that differentiation of a single gene changes behavior in a wild songbird, determining whether the bird displays more or less aggression. The research identifies a specific estrogen receptor as driving this behavior, showing how genomic divergence can lead to behavioral divergence in a vertebrate.
A new study by Duke University researchers suggests that songbirds perform better during the day when they warm up their voices in the early morning hours. By singing early and often, birds improve their trill rate and vocal range, ultimately nailing their songs during the day.
A recent Arizona State University study found that feelings of jealousy can act as a tool to maintain friendships. The research suggests that jealousy motivates people to be better friends, invest in neglected relationships, and even overcome threats from third-party individuals.
Scientists used mathematical modeling to track long-tailed tits in Sheffield's Rivelin Valley, finding patterns that help explain flock segregation. The study reveals birds avoid larger flocks and prefer woodland centers, contradicting previous assumptions about their behavior.
Researchers discovered that REM sleep tunes eating behavior by reducing the activation of hypothalamic neurons in mice, indicating the importance of sleep quality in maintaining stable feeding habits. The study suggests a long-lasting effect on neuronal activity and feeding behavior.
Research suggests that 1 in 4 UK puppies may be acquired before the minimum recommended age, risking health and behavioral problems. Factors associated with early adoption include visiting the puppy before taking it home or intending to use the dog for work.
A study on dairy cows' social grooming behavior found that cows form strong bonds through mutual cooperation and prefer individuals of similar age. Older cows groom more individuals, suggesting a 'peacemaker' role in the herd. These findings could inform innovative farm management strategies prioritizing cattle emotional and social needs.
University of Queensland researchers have linked improvements in zebrafish's hunting skills to the development of sensory coding in their brains. The study shows that changes in neural circuitry lead to refinements in behavior and even predict individual fish's hunting success.
A new study by Dr Katerina Johnson and Dr Philip Burnet found that antibiotic treatment in early life impairs brain signalling pathways for social behaviour and pain regulation in mice. The most striking finding was the reduced expression of receptors mediating endorphin, oxytocin, and vasopressin signalling in young animals treated wi...
Researchers at UT Southwestern Medical Center identified a key brain region, the cerebellum's Rcrus1, which regulates repetitive and inflexible behaviors in individuals with autism. Inhibiting activity in this region improved social behaviors, while stimulation restored social functions, offering potential new therapies for ASD.
Researchers developed a low-cost, customizable VR system to study animal behavior using freely moving small animals. The system, called PiVR, enables the delivery of virtual realities in real-time, allowing scientists to examine causal relationships between neural activity and specific behaviors.
The Andean condor flaps its wings only 1% of the time during flight, with most movement occurring through air currents. Research using high-tech flight-recorders revealed that over 75% of wing movements are associated with take-off.
Researchers identified over 1,100 genetic variants associated with colony-wide aggression levels in response to simulated attacks. A chromosomal region containing genes involved in brain development was found to be strongly linked to the evolution of gentler Africanized honey bees.
Researchers found that animals exhibited unusual behavior up to 20 hours before earthquakes, with stronger reactions closer to the epicenter. The movement data were evaluated using statistical models, suggesting a potential for an animal-based earthquake early warning system.
A global initiative is investigating how animals are responding to reduced levels of human activity during the Covid-19 pandemic, revealing insights into human-wildlife interactions. The study aims to improve understanding of space sharing on a crowded planet with benefits for both wildlife and humans.
A study of mice in semi-natural settings reveals that oxytocin can increase aggressive behavior as well as friendliness, depending on the environment. The findings suggest a more nuanced view of oxytocin's effects and highlight the need for complex environments to translate research findings to human behavior.
A team of researchers from the University of Bristol developed an ant-inspired method for mathematical sampling, which outperforms traditional methods. The study found that ants' collective behavior can be used to create a more efficient way of exploring complex probability distributions.
A study found that dog breeds labeled as 'cooperative' and 'independent' do not exhibit different responses to unfair outcomes, contrary to previous hypotheses. Dogs from both breed groups displayed inequity aversion, with some differences in behavior observed between the groups.
Researchers found that male guinea pigs' hormone systems adjust after being transferred from colony housing to pair housing with an unfamiliar female. This adaptation allows them to exhibit more aggressive behavior in defense of the partner, similar to those in prior pair-housing conditions.
Researchers found that animals' movement across their territories can lower the number of infected but increase disease persistence within populations. This finding challenges traditional views on disease transmission and highlights the importance of considering individual animals' movement in studies.
Researchers at MIT's Picower Institute discovered that dopamine signaling plays a crucial role in coordinating distinct behavioral outputs in C. elegans, enabling the animals to disperse eggs efficiently across a nutrient-rich environment. By analyzing high-frame-rate videos of nematodes using a custom microscopy platform, the team ide...
Zebrafish studies reveal that isolation causes sensitivity to stimuli and increased brain activity related to stress and anxiety. The results suggest that social isolation can result in a decreased desire for social interaction, contradicting the assumption that loners are simply anti-social.
Researchers found that microswimming particles can be made to organize into different collective states, supporting the hypothesis of critical behavior. The study demonstrates a close link between collectivity and critical behaviour, suggesting a physical principle underlying complex animal group behavior.
Monk parakeets seem to understand where they fit in a dominance hierarchy and pick their fights accordingly, improving or maintaining their status. This ability helps animals make aggression decisions by processing different types of information.
New video technique reveals altered nursing behaviour and retarded larval development in neonicotinoid-treated honey bees. This affects their social interactions and increases the risk of parasite infestation, such as Varroa mite.
A study of 175 reports found that 32.3% of North American perching birds defend their territories against other species, with hybridizing species more likely to do so. Resource competition is a key driver of territorial behavior in these birds.
Researchers used noninvasive pulses of ultrasound waves to control macaque monkeys' choices in an experiment widely used to investigate choice behaviors. The technique successfully influenced which target the monkeys looked at, regardless of reward, suggesting its potential for studying addiction and compulsive behaviors.
Researchers at Max-Planck-Gesellschaft have created a miniature microscope that can capture neural activity in all cortical layers of freely behaving rats. This breakthrough technology allows for continuous imaging of neuron populations, even during complex behaviors, providing insights into the brain's circuit dynamics.
A team of scientists developed an innovative method to study eye movements in mice, revealing two types of eye movement coupled to head movement: 'head tilt compensation' and 'saccade and fixate'. These findings validate using mice to study human brain disorders, including schizophrenia, Alzheimer's disease, and stroke.
Researchers found that pingers significantly reduced harbour porpoise detection, with a 37% decrease near active devices, while having no impact on long-term use or feeding grounds. The study suggests an effective solution to reduce bycatch in gill-net fisheries.
Research by Marta Moita and her team found that social animals acquire fear of freezing through auto-conditioning, which requires both pain and immobility. The team discovered a neural map in the brain's fear-learning center and auditory system that underlies this learning mechanism.
Scientists found a correlation between pack hunting and dietary diversity, which is rare in animals that hunt in groups. The study suggests raptors likely only hunted solo or with limited cooperation.
Common shrews have a high metabolic rate and quickly deplete their fat reserves in winter. However, they do not need to increase their metabolism in response to colder temperatures, thanks to their unique adaptation of shrinking in autumn and growing in spring.
A five-year study reveals that flamingos consistently spend time with specific close 'friends', forming complex social bonds, including 'married' couples and same-sex friendships. Flamingos' long-lasting friendships are stable over years, suggesting they play a crucial role in survival.
Researchers identify celastrol as a potential therapeutic target for treating winter depression, a condition characterized by low mood and social withdrawal. The study uses medaka fish as an animal model to understand the underlying mechanisms of winter depression.
Researchers found that mantis shrimps rely on external cues from the sun, followed by polarization patterns in light, before using their internal navigation system when other options are unavailable. These findings provide new insights into the complex behaviors of these fascinating creatures.
A UK-China project develops wearable biosensors and a portable diagnostic test to monitor dairy cow health and detect brucellosis early. This technology aims to prevent disease spread and improve animal welfare.
Researchers at Arizona State University found that activating the anterior insula restored prosocial behaviors in animals with opioid addiction, a potential breakthrough in treating social behavioral deficits. The study used chemogenetic methods to selectively activate the brain region involved in both prosocial and addictive behaviors.
Researchers attach backpacks with sensors to tiny animals like vampire bats, enabling precise mapping of their social networks and flight trajectories. The system conserves energy and provides robust results for studying animal behavior and conservation.
Red-winged blackbirds respond aggressively to a specific 'seet' call from yellow warblers when they detect the presence of brown-headed cowbirds. The birds also respond to other calls that signal general danger to their nests, including blue jay and cowbird chatter.
A recent study in Genome Biology and Evolution explores the genetic underpinnings of spider sociality, revealing rapidly evolving genes involved in behavior, immunity, and brain-specific expression. The analysis found differences in metabolic processes between solitary and social spiders, hinting at distinct hunting and feeding behaviors.
Researchers found that allied male bottlenose dolphins synchronize their vocal behavior when cooperating together, promoting cooperative behavior and regulating stress. This behavior helps reduce tension between males in a context that requires them to work together successfully.
Studies have shown that turtle ant soldiers exhibit a four-fold difference in head shapes, adapted to different tunnel sizes. The research suggests that evolution can be dynamic and reversible, with some species evolving back into more generalist stages.
A new study reveals that random variation in brain development generates behavioral diversity in fruit flies, contradicting the nature vs nurture debate. The origin of unique behavioral idiosyncrasies lies in individual differences in neural circuit wiring, which significantly influence behavior.
A team of researchers has shown that fish school by copying each other and changing directions randomly, rather than calculating and adapting to an average direction of the group. This new model proposes that noise-induced ordering is responsible for schooling behavior, contradicting previous theories.
Researchers investigated the effects of neonicotinoids and sulfoximines on locusts' collision avoidance behavior. The study found that neonicotinoids inhibit tuning of visual sensory circuits, leading to impaired motion detection at sublethal doses.
Research in animal models shows that social isolation during adolescence can lead to disruptions in social behavior and activity patterns of inhibitory neurons involved in social approach. Increasing activity of these neurons in adult animals restores normal social behavior. The study highlights the importance of social experience duri...
Researchers discovered bumblebees use two modes of flight to optimize energy usage, including the 'economy mode' that allows heavier loads with minimal extra flapping frequency. This behavioral choice reveals flexibility in bee behavior and challenges previous assumptions about insect physiology.
A new study suggests that human cooperativity is an outcome of competition between cultural groups. Researchers found that culturally different groups compete, leading to the spread of traits that give groups a competitive edge, including cooperation.