Articles tagged with Behavior Genetics
Researchers found that stressed mice exhibited decreased neuron excitability in the dorsal hippocampus, which may drive social avoidance, while resilient mice showed increased excitability. This difference was linked to changes in stress hormone receptors and HCN1 protein expression.
A new study led by a 16-year-old scientist found that certain ultra-processed foods, such as candy and pastries, can lead to increased consumption of other unhealthy foods among teenagers. Reducing consumption of these 'gateway' foods may help reduce overall unhealthy food intake and positively impact health.
Researchers discovered a gene called nervy that helps fruit flies respond to socio-environmental signals to stop fighting. The study's findings have implications for understanding aggression in humans and potentially treating psychiatric disorders like Parkinson's disease.
Research using genetic variants as proxies for physical activity levels found a link between higher activity and lower invasive breast cancer risk. A higher overall level of genetically predicted physical activity was associated with a 41% lower risk of invasive breast cancer.
Researchers investigate how foraging adaptations affect Arctic charr resilience to climate change. The team aims to develop a framework linking genetic and malleable components of feeding trait diversity to population demography, habitat, and eco-evolutionary potential.
A review of over 200 publications suggests that fish perceive quantities using similar brain regions as mammals and birds. This finding could lead to the development of new treatments for human diseases affecting math skills, such as developmental dyscalculia.
Researchers from Rice University, Duke University, Brown University and Baylor College of Medicine developed a magnetic technology to wirelessly control neural circuits in fruit flies. They used genetic engineering to express heat-sensitive ion channels in neurons that control the behavior, and iron nanoparticles to activate the channels.
Researchers have identified over 1,500 genetic differences between migratory and non-migratory hoverflies, shedding light on the genetic pathways involved in migration. The study reveals suites of genes being activated in concert, including insulin signalling for longevity and pathways for immunity.
A new study published in Behavior Genetics found that natural selection favors characteristics associated with lower earnings and poorer education, such as having more children. The research, led by UEA, analyzed data from over 300,000 people in the UK and suggests that this may be contributing to increasing income inequality.
Research from Penn State and Michigan State found paternal depression symptoms associated with adolescent depression and behavior problems, even among non-genetically related families. Parent-child conflict was a key factor contributing to these effects.
Male scorpionflies from two locations in Japan use varying mating tactics, with those from Okayama employing 'sneaking' to successfully mate. The study suggests that environmental factors and genetic components influence alternative mating habits.
Researchers analyzed DNA of Demodex folliculorum mites living in human hair follicles, finding unusual body features and behaviors due to their isolated existence. The study suggests these mites may transition from external parasites to internal symbionts as they shed unnecessary genes and cells.
A collaborative team of scientists has discovered 15 additional genetic mutations in the KCNK9 gene that cause a neurodevelopmental syndrome. The study provides definitive diagnoses to 21 families worldwide, offering new insights into the disorder's symptoms and treatment options.
Two genetic mutations in the melanocortin 2 receptor gene may have enabled dogs to develop social cognitive skills for human interaction. This was found in a study of 624 domestic dogs using two tasks that tested their understanding of human gestures and communication.
Researchers have developed a new tool to visualize leukocytes in the brain vasculature during in vivo two-photon laser scanning microscopy. The tool uses a fluorescent antibody targeting CD45, a ubiquitously expressed protein on white blood cells, allowing for tracking of circulating leukocytes over time and space.
A new study identifies 152 genetic variants shared across multiple psychiatric disorders, including schizophrenia and bipolar disorder. This finding could lead to the development of therapies addressing multiple disorders with one treatment.
Researchers used worms to study how hunger signals in the gut communicate with the brain, leading to riskier behavior. The findings suggest that proteins in intestinal cells move dynamically to transmit signals about hunger, driving worms to cross toxic barriers.
Researchers found that mice with the Val89 gene variant exhibit attention deficit disorder-like problems, including diminished cognitive performance and increased vulnerability to distraction. The study provides direct evidence of the genetic variant's effects on acetylcholine availability and its resulting cognitive impacts.
Researchers are combining optogenetics and fMRI to study the links between brain activity and behavior. This hybrid approach allows for targeted manipulation and monitoring of brain function in awake and behaving rodents, providing valuable insights into neural mechanisms.
A team of scientists discovered that a disrupted circadian clock gene may contribute to the development of autism spectrum disorder. The study found that deleting the Bmal1 gene in mice led to autistic-like behaviors and cerebellar dysfunction, which were alleviated by mTORC1 inhibition.
Researchers found that female Faeder variants produce fewer offspring, but this disadvantage helps their males, who benefit from their rarity and obtain more matings. The contrasting effect of the variant contributes to its persistence over time.
The Southeastern Consortium for Lung Cancer Health Equity aims to address disparities in lung cancer screening among racially and ethnically diverse populations. Researchers will develop more precise methods for identifying those at highest risk of lung cancer diagnoses.
A new study reveals that genes inherited from moms and dads play distinct roles in shaping behavior, with certain cells relying on the mother's copy of a gene to produce essential neurotransmitters. This discovery has implications for understanding how parental genetics may influence behavior and related health conditions.
Researchers found that blocking an overactive signaling pathway during the first five weeks of life prevents autism symptoms from developing in mice. The study suggests that targeting this critical period could lead to a potential cure for autism.
A new study from the University of Helsinki found that providing individuals with their personal genetic risk for cardiovascular disease motivates them to take better care of their health. The interactive web-tool KardioKompassi helped participants understand their risk and make lifestyle changes.
A UMass Amherst researcher has received a $3 million grant to study the complex interplay of risk factors for autism, including early life exposure to environmental pollutants and genetic susceptibility. The study aims to better understand how multiple pollutants and the folate system are associated with autistic traits.
Researchers found that genetic relatedness correlates with hormonal responses and behavioural reactions in fish, allowing for selective breeding of less-stressed fish. This approach could simplify breeding methods for aquaculture and aquariums.
Researchers found lower functional connectivity between brain areas involved in social and emotional processing in individuals at risk of developing alcohol use disorder. This impairment may affect their ability to interpret facial expressions and respond to their environment, increasing the likelihood of disordered drinking.
Researchers identified genetic characteristics relevant to the production and behavioral attributes of two key bee subspecies, Cape bees and Africanized honey bees. Genetic studies found correlations between dark coloring and cloning behavior in Cape bees, which can take over colonies.
A recent study published in Communications Biology found that the presence of the Bmal1 gene in the striatum affects alcohol consumption in both male and female mice, but in a sex-dependent manner. Males without the protein consumed more alcohol, while female mice with it consumed less.
A new theory outlines how magnetite crystals in specialized receptor cells of salmon and other animals may have roots in ancient genetic systems developed by bacteria, suggesting a common evolutionary history between magnetite-producing bacteria and fish. The findings have the potential for widespread application, from improving salmon...
A global study led by TGen found five genes linked to brain regions that may help prevent suicidal behavior. The research could inform predictive models of suicide risk in patients with mental disorders.
A Tel Aviv University study found a significant link between changes in G-protein-coupled receptors and brain adaptability. Disabling the voltage sensor of these proteins caused uncontrolled brain flexibility, leading to excessive habituation to odors.
A large-scale new study found that frailty was a strong risk factor for dementia, even among people at high genetic risk, and that it can be modified through a healthy lifestyle. Over 10 years, dementia was detected in 1,762 participants, with those who were frail before diagnosis having a much higher risk.
Researchers develop system to image millions of brain cell connections in real-time, revealing key locations for learning and memory encoding. The new tool allows scientists to study synapse activity on a massive scale, with potential applications in understanding diseases such as Alzheimer's and autism.
Researchers at Tel Aviv University successfully treated autism in animal models with medical cannabis oil, improving behavioral and biochemical parameters. The treatment showed significant improvement in compulsive and anxious behaviors, and a decrease in the concentration of the arousing neurotransmitter glutamate.
A study by UC Riverside researchers shows that reactivating the Fmr1 gene in young transgenic mice with Fragile X syndrome eliminates symptoms. This breakthrough treatment offers hope for young children living with FXS and suggests targeting early brain development may be effective.
Researchers from Rice University and the University of Wyoming discovered self-organization into circular aggregates in Myxococcus xanthus, a model system for social cooperation. The circular behavior is linked to TraAB protein overexpression, which creates a sticky bond between cells, preventing reversals.
Researchers found that dolphins have adapted to coastal life independently due to ancestral genes, which provide benefits for living in different environments. These genetic variations can be learned and passed down through generations.
A large-scale genome-wide association study has identified a region on chromosome 7 containing DNA variations that increase the risk of attempting suicide. The study found overlap between the genetic basis of suicide attempts and related psychiatric disorders, as well as non-psychiatric risk factors such as smoking and sleep disturbances.
A recent study reveals that child maltreatment is associated with altered oxytocin gene methylation, leading to atypical brain structures and function. This finding suggests a potential biological mechanism for targeting during adolescence to improve the lives of victims of childhood abuse.
Researchers at Tel Aviv University conducted a cross-adoption experiment with fruit bat pups to determine whether boldness is genetic or learned. The findings indicate that the pups behave like their adoptive mothers, not biological mothers, suggesting that boldness is an acquired trait passed on through mother's milk.
Researchers have identified a gene called Nup54 that plays a crucial role in regulating female reproductive behaviors in fruit flies. This discovery provides new insights into the molecular mechanisms underlying sexual conflict and its impact on evolution.
A study published in BioScience found that genetic factors contribute to concern for nature and pro-environmental behavior, with moderate heritability (30-40%) reported. The researchers also observed high genetic correlations between these traits, suggesting a partially shared genetic basis.
Researchers identified environmental factors and breed-specific traits contributing to canine ADHD-like behaviour. Dogs who spent more time alone at home were more hyperactive, impulsive and inattentive, while breeds bred for work displayed increased hyperactivity and impulsivity.
A new study identifies 13 genes as key factors in shaping physical fitness through various forms of exercise. Genetic differences account for up to 72% of the variation in muscle strength improvements.
A new study found that parental care does not seem to affect sperm-mediated effects in threespine sticklebacks, contrary to previous expectations. The researchers tested the behavior and stress responses of offspring from predator-exposed fathers with or without parental care.
Researchers found that wild and hatchery coho salmon demonstrate different genetic markers for negative assortment, a common finding in mating. They are now trying to emulate the natural mating of coho salmon in a hatchery environment using genetic profile information.
A study found that chronic stress, measured by allostatic load, was associated with a lower likelihood of completing chemotherapy and lower overall survival rate in patients with lymph node-positive or high-risk lymph node-negative HER2-negative breast cancer. Allostatic load may be a better predictor than genetic ancestry for chemothe...
Researchers discovered structural differences in brain regions responsible for decision-making and empathy in adolescents with conduct disorder compared to their unaffected siblings. These findings suggest that small changes in brain function may contribute to the development of antisocial behavior in some siblings.
Researchers found associations between driving convictions, accidents, and behaviors like junk food consumption and alcohol. Genetic variation in serotonin metabolism was also linked to risky driving.
A study by Johannes Gutenberg University Mainz found that genetically diverse ant colonies produce more larvae than those with similar genetic backgrounds. This improved division of labor allows for more efficient task allocation, leading to better colony performance.
Researchers at WVU aim to characterize autism patients' behaviors using behavior-tracking technology. They plan to use artificial intelligence to identify traits associated with ASD, which could lead to more accurate diagnoses and personalized interventions. The study also has the potential to improve early detection in young children.
Research reveals that dopamine levels increase with stressful stimuli, rewriting the 'pleasure molecule' narrative, and suggesting new treatment approaches for psychiatric diseases and addiction. The discovery has significant implications for understanding dopamine's role in behavior and developing evidence-based treatments.
Five innovative research projects tackle fundamental questions of environmental and earth science, including the origins of Earth and life on Mars. The studies aim to advance our understanding and lead to important scientific breakthroughs.
A new open-access repository aggregates and enhances FAQs by genomics researchers to explain their studies and debunk bias. The repository provides easily accessible information for various stakeholders, including policymakers, journalists, industry, and patient groups.
A new questionnaire revealed seven distinct feline personality and behavior traits, including activity playfulness, fearfulness, and aggression. Breed-specific differences were also found, with some breeds exhibiting more fearful or passive tendencies.
Research identifies genetic variants associated with adherence to medication, suggesting a link between individual behavior and biological factors. The study found positive correlations between adherence and traits controlled by multiple genes, such as educational achievement and body mass index.
A genome-wide association study has identified 579 locations in the genome linked to self-regulation disorders, including addiction and child behavioral problems. The study found a significant genetic risk score that predicts various life outcomes, such as education levels, obesity, and opioid use disorder.
A University of Houston researcher is using cutting-edge techniques to study how testosterone affects the brain and social behavior. Using genetically modified African cichlid fish, Beau Alward aims to identify the specific genes and neurons involved in these processes.