Articles tagged with Bees
A study found that isolated Cape honeybees in South Africa reproduce asexually, with female workers laying eggs fertilized by their own DNA. This unique behavior is linked to genetic differences at several genes, enabling social parasitism and population survival.
Research identifies genetic basis for social parasitism in Cape bees, where worker bees can reproduce asexually. The study reveals that multiple genes are required for this trait, including those involved in hormonal signaling and chromosomal segregation.
Researchers have discovered eight new endemic polyester bee species in Chile, showcasing their adaptability across various habitats. The newly described species, including the Charizard bee, display unique characteristics such as snout-like faces and broad hind legs.
A study by Purdue University reveals that honeybees collect pollen from non-crop plants contaminated with a wide range of pesticides, including pyrethroids and neonicotinoids. The researchers found that bees are chronically exposed to these chemicals throughout the growing season.
Researchers at the University of Bristol discovered that bumblebees' tiny hairs deflect in response to electric fields, but only the hairs alert the bee's nervous system. This finding suggests that electroreception in insects may be more common than previously thought.
Researchers found that Australian small carpenter bee populations flourished in the wake of global warming following the last Ice Age. The study's findings suggest that bees have responded similarly to climate change globally, which could be a positive sign for their survival.
Research from North Carolina State University finds that bees in cities rely on flowers for nectar, not processed sugars. Domesticated and feral bee populations show varying levels of sugar consumption.
The US saw a significant loss of honey bee colonies, with commercial and small-scale beekeepers losing 44.1% of their colonies over the course of the year. The main cause of these losses is the varroa mite, which can easily spread between colonies.
Research finds honeybees anticipate and react to rapid temperature increases sooner in larger groups of 10, suggesting decentralized information gathering improves response time. This study explores the role of group size on self-organization and biological environments.
Researchers have built a computer model that mimics bees' ability to detect motion and navigate complex environments. The model uses optic flow to control flight and avoid obstacles, paving the way for more efficient autonomous flying robots.
Researchers at the University of Sheffield developed a computer model to understand how bees use vision to avoid collisions. The model suggests that adding speed detection capabilities to existing motion-direction detecting circuits could enhance the navigation and routing algorithms for autonomous flying robotics.
A new project aims to mobilize the public to help local urban bees by planting bee-friendly flowers and tracking their movements. The London Pollinator Project encourages Londoners to plant flowers that are rich in nectar and pollen, such as English lavender and spiked speedwell, to support the ailing urban bee population.
Entomologists have described a traumatic insemination process in which male twisted-winged parasites inject semen directly into the female's body cavity. The fertilization process is unusually prolonged, lasting up to 30 minutes, and is likely used to reduce sperm competition.
Researchers found high levels of varroa mites and fungal parasites, with severe correlations to viral diseases like Chronic Bee Paralysis Virus. The study provides crucial baseline data for tracking future trends in honey bee health.
Researchers at the University of Stirling discovered that wild bumblebees are born with the ability to vibrate flowers to extract pollen. Over time and with practice, bees refine their vibrations, saving energy and maximizing rewards from each flower.
New research reveals honey bee colonies adapt their diet to counter nutritional deficiencies, prioritizing diets that complement specific amino acid deficiencies. This ability allows bees to maintain a balanced nutrition level when alternative floral resources are scarce.
A Purdue University study found that rising carbon dioxide levels have reduced protein in goldenrod pollen, a key food source for North American bees. This decline may threaten bee health and survival, particularly during the winter months when bees must store substantial amounts of pollen to overwinter.
A new study reveals that copper sulfate, commonly used as a fungicide in agriculture, is lethal to the native Brazilian bee Friesella schrottkyi. Sublethal exposure also affects its behavior, highlighting concerns for growers and pollinator conservation.
A study found that commercial bumble bee pollination operations coincided with infections and declines in wild bumble bees. The fungus, N. bombi, was present in the US as early as 1980, well before wild bumble bee species began to decline.
Researchers from Arizona State University discovered that short-term starvation in larval stage makes adult honey bees more resilient to starvation. This finding suggests a predictive adaptive response, similar to solitary organisms, which could help solve the problem of colony collapse disorder.
Researchers found that Asian honey bees produce different types of vibrational stop signals when attacked by giant hornets, which vary depending on the level of danger and context. These signals can inhibit recruitment to dangerous food sources or alert nestmates to imminent threats.
A recent study found that ground-nesting bees on heavily farmed landscapes have a smaller size, with female bees carrying 40% less pollen. This may impact their ability to provision offspring and lead to population decline.
Bumblebees are unable to share their pollinating knowledge with less experienced bees, according to a study published in PLOS ONE. The researchers set up an outdoor flight cage with artificial flowers and found that more experienced bees frequently attacked newcomers who tried to copy their foraging routes.
A Clemson University study investigates the benefits of diverse agroecosystems in watermelon production. Native bees and wildflowers may complement honeybees to improve crop quality and yield. The research aims to find a simple way for farmers to attract native pollinators, potentially eliminating the need for domesticated honeybees.
Bumblebee foraging behavior altered by low levels of pesticides, changing floral preferences and hindering learning skills.
Researchers found that bumblebees exposed to pesticides collected more pollen but took longer to do so than control bees. Control bees chose different flowers than pesticide-exposed bees.
A new study reveals that European honeybees are being poisoned with up to 57 different pesticides, posing a threat to bee populations worldwide. The researchers developed a method for analyzing 200 pesticides simultaneously, providing critical information on the toxic mix and its impact on honeybee health.
Research from North Carolina State University found that eusocial insects with larger colonies exhibit weaker immune responses. The study suggests that hygiene behaviors play a key role in keeping these insects healthy, rather than just immune systems.
A study from the University of Otago suggests that low levels of chlorpyrifos in bees can lead to severe learning and memory deficits. Researchers found that even 'safe' doses of the pesticide affect odour-learning abilities and recall, potentially threatening bee survival.
Researchers found that flowers with imperfect iridescence are easier for bees to spot than those with perfect iridescence, which can confuse bees' color recognition. This subtle signal allows flowers to communicate with bees without interfering with their ability to distinguish between colors.
Research led by UI Scientist Brian Dennis finds honeybees' decline rooted in hive size, which becomes unstable when cooperative functions are degraded. The study proposes regional pesticide management and conservation programs to help honeybees.
Researchers used three long-term datasets to analyze honey bee population trends, identifying the USDA Census of Agriculture as the most accurate dataset for measuring changes in abundance. However, they acknowledged limitations of the data, including lack of information on colony usage and losses.
A new tool using statistical physics can identify the tipping point for complex systems, predicting their collapse. This prediction enables early intervention and recovery measures to be taken, ensuring the system's resilience is maintained.
Researchers measured trap-jaw ant speed in high-speed cameras, finding species range from 19.5 to 41.5 strikes per second, with Odontomachus brunneus recording the fastest recorded speed. Understanding antennal boxing can inform our understanding of ant sociology and behavior.
A recent study suggests that the Bombus occidentalis bumble bee may be making a comeback in the Pacific Northwest. The population's resurgence is believed to be linked to evolution and a decline in the impact of the Nosema parasite. This reversal could have significant implications for local ecosystems.
Purdue University researchers have discovered that pollen-derived carbon architectures can be used as anodes in lithium-ion batteries. The study found that the cattail pollen-based carbon performed better than bee pollen, with a higher theoretical capacity of 200 milliamp hours per gram.
A study found that European honeybee populations are the primary source of Deformed Wing Virus infecting hives worldwide. The pandemic is driven by human trade and transportation of bees for crop pollination, posing significant threats to global bee populations and biodiversity.
Researchers found that queen bees emit a chemical pheromone that alters the DNA of their daughters, keeping them as sterile and industrious workers. This process involves DNA methylation, which suppresses queenly characteristics in workers.
Research supports theory of kin selection, suggesting that altruistic behavior occurs to pass genes to next generation. Genes inherited from queen promote altruistic behavior in worker bees, while those from father's promote selfish behavior.
The US has identified key agricultural regions at high risk for wild bee decline, which could destabilize crop production. The study suggests 39% of croplands face a pollinator shortage, with the Midwest's corn belt and California's Central Valley particularly affected.
Researchers discovered that Australian blue-banded bees use high-speed headbanging to pollinate flowers, releasing pollen into the air similar to a salt and pepper shaker. This technique allows for more efficient pollination, with the bee vibrating the flower up to 350 times per second.
A UK study by University of Stirling researchers found that neonicotinoid pesticide use is linked to declining butterfly populations, with 15 species showing population declines. The chemicals can persist in the environment and contaminate wildflowers, providing little nourishment for butterflies.
A recent study led by the University of Queensland found that non-bee insect pollinators, such as flies and butterflies, are crucial for crop pollination. These insects performed 25-50% of total flower visits and provided similar pollination services to bees.
Researchers at OIST discovered two ancient genetic components involved in sex determination in ants. The study found that a mechanism called complementary sex determination is used, where females are diploid and males are haploid. This system has been linked to the evolution of sex determining genes dating back over 100 million years.
Researchers used DNA sequencing and a supercomputer to analyze pollen from beehives, identifying key plants bees rely on. The multi-locus metabarcoding approach provides quantitative measurements of plant proportions, helping to enhance landscapes and sustain robust bee populations.
Archaeologists have discovered evidence of beeswax use dating back to the Neolithic period in Anatolia, with finds spanning from 7000 to 4900 BCE. The study reveals that beeswax was used for various purposes, including tools, rituals, cosmetics, and medicine.
A study found that fossilized bees from 50 million years ago were finicky about the pollen they fed their larvae, always collecting it from the same plants. The bees also ate a wide variety of things on their own flights, showing they didn't waste time searching for specific food sources.
Researchers discovered that ancient bees used both generalist and specialist pollen-collecting strategies, finding pollen from diverse flowers on their bodies except for the hind legs. This finding challenges previous theories about the early history of bee pollination.
Researchers at Queen Mary University of London found male bumblebees equal to female worker bees in learning floral colors. The study showed that male bees can learn new flower colors as indicators for nectar even when the original color changes.
Researchers detected beeswax in ancient pottery vessels from over 150 European archaeological sites, indicating a widespread association between early farmers and honeybees. This discovery pushes back the chronology of human-honeybee association to substantially earlier dates.
A recent review article by UC Riverside-led researcher Peter Graystock highlights the risks of managed bees to wild bees, including disease transmission and population declines. The study recommends improved disease screening, unified international regulations, and conservation efforts to mitigate these effects.
Researchers developed a prototype device that can remotely monitor hive activity using vibrations from bee vocalizations, allowing for real-time tracking of changes in bee behavior. The device has been tested on two UK and French colonies, detecting daily rhythms and seasonal variations in bee activity.
Researchers found that urban areas have higher pathogen abundance and lower honey bee survival rates compared to rural environments. The study suggests that increased transmission rates in urban areas may be the primary cause of this effect.
A $7.3 million genomic project in Canada is developing a winter-hardy, disease-resistant breed of honeybees to combat declining health and economic losses. The research aims to improve bee health through the identification of genetic markers and the development of accurate tests for detecting Africanized genetics.
A study by the USGS found that native bees are exposed to neonicotinoid insecticides and other pesticides, particularly in agricultural fields and grasslands. The presence of these pesticides can harm bee populations and reproductive success.
Researchers found that honey bee larvae acquire social information from their environment, which affects their aggression and resilience. The study suggests that early-life experiences shape the behavior of adult bees, with aggressive individuals exhibiting increased resistance to pesticides.
Researchers at Aarhus University have created a model that groups the incidence of viral infections into four categories, allowing beekeepers to easily assess the severity of infections. This simplified system benefits both scientists and beekeepers, enabling them to make informed decisions about disease prevention and breeding.
Researchers have discovered that a Brazilian social bee must cultivate fungus to survive, highlighting the importance of symbiotic relationships in colony health. The fungus is grown in the nest and is transferred to newly built cells, with larvae surviving 76% of the time when fed fungal mycelia.
Researchers found that red mason bee females prefer males from their own region based on specific vibration patterns. This discovery suggests that vibrational signals carry complex information about a male's place of origin.
Research suggests that diesel fumes, containing toxic nitrous oxide (NOx), can alter five common floral odours that bees rely on for finding food. This could have a worse impact on bee populations than previously thought, highlighting the need to address air pollution from vehicles.