Articles tagged with Ethology
Research shows that oxytocin increases maternal aggression and decreases anxiety during lactation. In a study on virgin rats, oxytocin was found to reduce anxiety and promote social dominance behavior. The hormone's role in regulating reproductive systems and behaviors is also being explored.
A recent study published in Psychological Science reveals that consonants play a crucial role in distinguishing between words, while vowels carry grammatical information. The researchers found that listeners are sensitive to this difference and can compute statistical relations among vowel sounds but not consonant sounds.
A new study found that a single gene, Fruitless, is responsible for controlling fly sexual behavior. The researchers discovered that female flies with the male version of the protein behave like males and engage in nearly identical courtship rituals.
Researchers studied flying snakes' flight patterns and found that body length and wave amplitude are key predictors of flight behavior. Paradise tree snakes can travel further horizontally than vertically, making them true gliders.
Researchers have developed two novel robotic devices inspired by the movement of worms and slugs, including an endoscopic device that can navigate complex spaces and a gripping device that can pick up soft objects without damaging them. The devices aim to reduce discomfort and increase compliance during medical procedures.
Researchers built robots with sensors and programming similar to rat pups' basic senses and motor skills. The robots showed a new behavior in an arena, favoring one wall over another, displaying emergent behavior. Understanding this simple system's biology may inform the design of more sophisticated robots.
A new study suggests that ingestion of afterbirth may modify specific opioid-receptor systems in the brain, facilitating the onset of maternal behavior. The research, led by UB professor Mark Kristal, aims to determine how endogenous opioid activation during pregnancy and delivery influences maternal behavior.
Researchers at Duke University Medical Center found that monkeys will pay to view images of familiar, high-ranking individuals or those with potential sexual partners. This study demonstrates that monkeys assess visual information by its social value, providing insight into their social cognition.
Researchers found depressed female monkeys exhibited socially withdrawn behavior, reduced body fat and disrupted hormone levels, similar to human depression in women. The study aims to develop new treatments specifically for females, who are 66% more likely to experience depression.
Neurology researchers have identified an area in the prefrontal cortex that controls collecting behavior, revealing a potential link to hoarding disorders. Damage to this region can lead to abnormal hoarding behavior, interfering with daily life and causing individuals to resist discarding collected items.
A review of dozens of studies found strong evidence of a link between global warming and changes in the behavior of US species, including earlier flowering, bird breeding, and species migrations. The study highlights the need for conservation efforts to mitigate the impact of climate change on US wildlife.
Research using non-human primates reveals that early life stress exposure timing affects brain development and behavior in adulthood. The study found that monkeys separated from their mothers at different ages displayed distinct behavioral patterns, with those separated earlier showing reduced social skills and increased anxiety.
Researchers tracked infant monkeys separated from mothers at different stages of infancy to find varying behavioral impacts on social skills and adult behaviors. Timing of separation significantly influenced the development of social comfort, dominance, and playfulness in adulthood.
Honey bees given varying levels of ethanol exhibit behavioral changes, including impaired motor function and learning. The study aims to uncover molecular mechanisms underlying addiction and aggression in humans, leveraging the similarities between bee and human nervous systems.
A new information system will help researchers understand the relationship between genes and behavior in honey bees. The BeeSpace system will provide a comprehensive environment for analyzing genomic data, enabling scientists to identify key roles in social behavior.
Research finds connection between cytokine IL-4 signaling impairment and type 2 diabetes. Hyperinsulinemia triggers serine phosphorylation, impacting insulin receptor substrates and leading to neuroimmune response.
A study by the University of Pennsylvania School of Medicine found that most antidepressants, except citalopram, are ineffective on mice lacking norepinephrine. The researchers tested eight commonly prescribed antidepressant drugs and discovered a critical link between norepinephrine and desired behavioral effects.
Researchers found that zebrafish learn to prefer one fish color pattern over another based on their early experience with these patterns. This learned social preference has significant impacts on the survival and reproductive success of individual fish.
Researchers have found that genetic variations can affect an individual's response to alcohol, with some genes contributing to increased sensitivity and others to tolerance. The study suggests that understanding these biological markers can help develop new treatments for alcohol dependence.
A team led by Tucker Balch at Georgia Institute of Technology has developed a computer vision system that automates the analysis of animal movement. With an accuracy rate of 81.5%, the system can analyze bee movements and label them based on examples provided by human experts.
Researchers found that genetic factors play a significant role in coping behaviors, with females exhibiting inherited traits from their grandmothers. The study suggests that understanding the genetic basis of coping behaviors could help develop new treatments for psychiatric disorders.
Myxococcus xanthus bacteria evolved the ability to swarm socially on soft agar without filamentous appendages (pili), relying on an enhanced adhesive matrix composed of fibrils. This cooperative behavior depends on individual cells contributing to a public commons, enabling efficient swarming and cooperation.
Researchers have discovered cooperation between genetically similar but unrelated male blue-throated lizards, challenging the traditional theory of kin selection. The study found that these cooperative males exhibit higher fitness levels and improved reproductive success due to their neighborhood relationships.
Researchers found that oxytocin and estrogen receptor genes play a crucial role in social recognition in female mice. Female mice lacking these genes failed to recognize normal females after repeated introductions, indicating a 'micronet' necessary for complex behavior.
Agent-based models reveal how simple interactions among individuals can generate complex social patterns, such as residential segregation and fads. Researchers use these models to study human behavior, including peer enforcement of norms and self-destructive behaviors.
Researchers found convincing evidence of sexual dimorphism in fossils from 252-260 million years ago, with male Diictodon having large tusks used as weapons for combat. The study suggests complex social behavior among ancient animals.
Researchers discover evidence of culturally transmitted behaviors in orangutans, dating back 14 million years. The findings push back the origins of cultural transmission in apes, suggesting a stronger link to human culture.
Researchers have developed a comprehensive understanding of crayfish locomotion, revealing an intricate eight-module system that integrates signals from each segment and the brain. This complex neural network is likely to be found in other animals, including insects and humans.
A Cornell University researcher discovered that paper wasps use visual cues to identify each other, recognizing individual faces and abdomens through unique markings. This challenges the long-held belief that insects rely solely on pheromones for identification.
Researchers found that rats depleted of salt show unusual growth of brain cells, with a 30-35% increase in neuron length and branching. This suggests an ability for neurons to make more connections.
A new program helps protect Asian elephants from crop-raiding by implementing a coordinated effort to deter them, reducing farmer risk and protecting the environment. The initiative uses trip wires, sirens, spotlights, and firecrackers to scare off aggressive elephants, promoting coexistence between humans and wildlife.
Researchers will explore neuroadaptation, reinforcement, tolerance, sensitization, withdrawal, and relapse to improve treatment and preventive interventions. The INIA consortium aims to clarify the molecular and cellular underpinnings of excessive drinking behavior.
The NIH has awarded $3.9 million in new grants to support innovative treatments for autism and establish a nationwide network of major research centers. The grants will focus on aspects such as speech therapy, imitation skills, and biological effects of medications.
An international research team aims to fill knowledge gaps on whale, seal, bird, turtle, fish and squid behaviors. The Census of Marine Life project tracks animals using sophisticated electronic sensors.
A Yale University study suggests that individuals who quickly escalate their cocaine intake are more likely to become addicted. The research identified a key behavioral feature: excessive craving responses, which correlated with dramatic increases in cocaine intake before abstinence.
Researchers found that marine mammals take advantage of buoyancy changes with depth, allowing them to glide rather than swim during deep dives. This strategy enables animals to extend their dives and conserve energy.
Scientists find that cryptochrome, a blue-light photoreceptor, may play a role in processing visual clues from the magnetic field and staying on course. The discovery was made using chemical experiments and computational modeling.
A new polymer, polyethylene glycol (PEG), has been shown to rapidly repair damaged nerve membranes in live guinea pigs with severe spinal cord injuries. The treatment can be applied up to eight hours after the injury without losing benefits, offering promise for rescuing substantial portions of damaged spinal cord tissue.
Researchers found that displaying aquariums in nursing homes reduced disruptive behaviors and improved eating habits among Alzheimer's patients. The tanks of brightly colored fish appeared to calm patients, increasing food consumption by up to 21 percent and decreasing behavioral issues such as wandering and aggression.
Researchers found neurons in parietal cortex that carry signals correlated with reward probability and amount, reflecting the value a monkey places on an action. This discovery reveals a viable biological alternative to the Cartesian reflex paradigm.
Researchers found that iguanas recognize individuals through both visual and auditory cues, with head bobs indicating familiarity. The study demonstrated human recognition by a lizard for the first time in scientific research.
A new study found that nicotine alters activity levels and exploratory behaviors in male rats but not female rats. Female rats who lived in groups showed increased time spent in the center of an open arena after nicotine administration, suggesting reduced anxiety. The findings may reflect human sex differences in reasons for smoking.
Researchers at Rensselaer Polytechnic Institute have developed a non-invasive technique to study complex cell behavior using electricity. The ECIS 100 technology provides unprecedented sensitivity and detailed results, allowing for real-time analysis of cell activity over time.
Researchers analyze patterns in animal aggregations, such as schooling fish and flocking birds, to understand how they behave in trying conditions. This knowledge can inform predictions about group behavior under various scenarios, including the impact of climate change on fish populations.
The Great Ape Project advocates for nonhuman great apes to have individual rights, including the right to life and protection from cruel treatment. However, experts raise concerns about overemphasizing human-like qualities in great apes, which may lead to an expansion of moral concern beyond humans.
Researchers found that young rats learned to distinguish lactating females from others through repeated trials, but did not yet recognize their mother. This study sheds light on the complex process of mammalian recognition and attachment.
Researchers discovered that female paper wasps sit and wait for opportunities to adopt orphaned nests or hijack others, a risky behavior with high reproductive benefits. Adopting the most mature nests allows these queens to produce workers quickly, increasing colony survival.
Exposure to stress during puberty results in abnormal aggressive and submissive behaviors, as well as neurobiological alterations, in hamsters. The study suggests that an imbalance in vasopressin and serotonin brain chemical systems contributes to inappropriate behavior.
The studies found that moving and lifestyle issues were the main reasons for surrendering pets, with 64% being euthanized instead of adopted. The majority of pet owners who surrendered their animals were under 30 years old, and more dogs than cats were taken to shelters.
Researchers at USC identified signals in the cerebellum and inferior olive that cause blocking, a phenomenon where animals fail to associate new stimuli with learned responses. Blocking prevents distraction from redundant or erroneous signals, ensuring efficient learning.
Researchers found that rats receiving ginkgo biloba extract learned quicker and made fewer errors in learning tasks, with an average lifespan of five months longer than control animals. The study suggests that the extract may have a positive effect on longevity beyond its purported benefits on brain function.
Researchers found that chronic stress influenced daily activity rhythms and induced depressive-like behavior changes in mice. Exercise was more pronounced in animals without running wheels, suggesting its protective properties against stress effects.