Articles tagged with Ethology
Researchers found five proteins overexpressed and three underexpressed in response to chronic alcohol exposure, affecting programmed cell death, cholesterol balance, and signal transduction. The study suggests a progressive increase in behavior disruption with prolonged exposure, highlighting the potential for new therapeutic targets.
Researchers at Rice University found that single-celled microbes can recognize and preferentially associate with their relatives, directing altruistic behavior towards them. This ability is similar to kin recognition observed in animals and has significant implications for the social evolution of species.
Researchers have developed a computer-controlled system to analyze animal behavior, allowing for rapid and efficient drug screening. The Forsyth Automated Training Apparatus enables automated control of the environment, recording animal reactions to stimuli, and providing valuable insights into cognitive abilities.
Studies have mapped brain regions and feeding cycles, but this study records neuronal activity across a full cycle of hunger-satiety-hunger. The researchers found that populations of neurons change their activity over the different phases of a feeding cycle, reflecting the physiological state of the animals.
Researchers at UW-Madison presented studies on the ineffectiveness of fish advisories, the role of sulfate-reducing bacteria in mercury contamination, and the long-term consequences of in utero exposure to methylmercury. The findings highlight the need for improved communication, funding, and media coverage to address these issues.
A study found that constant barking in animal shelters can cause physical stress, behavioral responses, and anxiety. New designs, such as individual rooms with access to a play area, have been shown to reduce noise levels and promote social interaction among dogs.
Research on neuropeptide S suggests it can reduce biochemical and behavioral symptoms of schizophrenia, while also alleviating anxiety and promoting wakefulness. The study's findings indicate the NPS receptor could be a target for developing novel antipsychotic drugs.
Research studies will explore neuroendocrine changes throughout the lifespan, including potential secrets to longevity and stress reduction. The congress will also examine the links between nature and nurture in disease development and abnormal behaviors.
A new study examines how competition scales influence cooperative behavior in humans, finding that global competition leads to reciprocal cooperation and selfish conflict in local competition. The research suggests that the spatial scale of competition may drive evolutionary changes in social behavior.
Researchers found that Nepali rhesus macaques are genetically similar to Indian-origin animals, which could provide a new alternative for HIV/AIDS research. The study suggests that these animals may be representative of Nepali rhesus macaques in general, and their use in research could help address conservation concerns.
Scientists track Caspian Sea sturgeons using satellite technology for the first time, providing critical data for conservation efforts. The study aims to learn more about species biology and behavior, challenging long-held assumptions and contributing to better management of endangered populations.
The study confirms that honeybees dance to report on real estate as part of their group decision-making process. The better the site, the stronger the waggle dance, which attracts other scouts to visit the recommended site.
The study found that manipulating a specific signaling pathway in the AT1 receptor altered animal behavior, increasing salt intake without water consumption. This suggests that intracellular events can regulate behavioral states, providing new insights into angiotensin's role in mammalian behaviors.
A Cornell University study reveals that male loons modify their yodels when switching territories, adopting a new call to signal dominance. This unique behavior has significant implications for conservation efforts and may inform the development of non-invasive bird identification methods.
Researchers propose that social systems arose as a group defense mechanism against predators, citing studies on male muriqui networks and affiliative hormones in primate species. Positive behaviors like grooming and physical touch increase levels of social bonding hormones.
Researchers discovered that mice without brain-derived neurotrophic factor (BDNF) exhibit increased BDNF and gene expression in response to social defeat, leading to improved social behavior. Antidepressants reverse this effect, suggesting a potential treatment for mood disorders.
Studies show that deleting a specific gene called BDNF improves behavior in stressed mice, while also providing insight into the underlying molecular events involved. The researchers' findings have implications for understanding human ailments like social phobia and post-traumatic stress disorder.
Case scientists demonstrate that motor neurons' behavioral roles change depending on body positioning, with implications for developing robots and prosthetic devices. Their research provides the first demonstration of Bernstein's hypothesis in a behaving animal.
Researchers found that shelter dogs with behavioral issues were more likely to be reported as aggressive or fearful when owners believed their responses would be shared with staff. Honest owner assessments can help shelters identify troubled dogs and provide better care for both animals and potential adopters.
A new study challenges prior models of behavioral and cognitive differences between Neanderthals and modern humans. Researchers suggest that the establishment of larger social networks allowed for more extensive division of labor and routine use of distant resources, potentially driving the replacement of Neanderthals in the Caucasus.
Researchers found a correlation between armpit odor and female fertility, suggesting that volatile organic compounds (VOCs) may play a role in reproductive health. The study suggests that women with higher VOC levels in their armpits may have better fertility prospects.
Researchers at University of Bristol observed ants using 'tandem running' to teach each other routes, a behavior that meets the criteria for formal teaching. This discovery suggests that information value rather than brain size may drive the evolution of teaching in animals.
A study of 6,500 participants found that psychologists made bigger profits by bucking the trend and not following other investors. They attributed share prices to psychological effects rather than herd behavior.
Researchers introduce a modified form of ChR2 in C. elegans neurons and muscle cells, allowing blue-light activation to trigger strong contraction and backing behavior. Electrophysiological experiments confirm the effects are due to ion flow caused by light exposure.
Researchers found that pursuing a goal can liberate people to pursue another, incompatible goal. Making plans for a goal also leads to the immediate satisfaction of conflicting desires. The study aims to address the behavior of individuals holding multiple goals.
Researchers found that wood crickets hide more when others have experienced danger and continue to do so after they are gone. This suggests that social learning is possible in insects without large brains, questioning the assumption that it requires superior cognitive abilities.
A study by Stanford University researchers found that low-ranking male cichlids can quickly become dominant without a fight. They undergo rapid physical transformations, including changes in body coloration and the appearance of a prominent eyebar. This transformation allows them to defend their newly acquired breeding grounds.
Researchers found that older animals exhibited an exaggerated inflammatory response in the brain compared to younger adults when exposed to a peripheral infection. This led to prolonged sickness symptoms and cognitive disorders. The study suggests that normal aging may also prime microglial cells, making them overreact to infections.
A positive relationship between male status and offspring count was found in a modern society subsample, indicating evolutionary forces may still be at work. This finding has implications for economics and management, explaining the striving for high and prestigious positions in men.
Research by Larry Young on voles has shed light on the molecular mechanisms underlying social attachment, which may hold clues for understanding autism. The study suggests that oxytocin and vasopressin play a critical role in modulating social behavior and shaping normal adult social behavior.
Researchers presented findings on hormonal signaling systems in the brain, revealing a radical shift in understanding information processing. Oxytocin and vasopressin were found to play key roles in social cognition, anxiety, and schizophrenia, with potential applications for novel psychiatric treatments.
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.
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.
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.
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.