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Tag: "worker" at biology news

Undergraduate research shows leaderless honeybee organizing

...ls her to fly. “Researchers have never reported worker piping being done on the queen before, so some of ...erent from the famous “waggle dance” that foraging worker bees perform to tell other bees where to find a food source, the vibration signal appears to be a mo...

Double the death rate from cirrhosis for 'blue collar' men

...her they were manual or non-manual workers. Manual worker status is a marker for lower socio-economic status (SES). Heavy or binge drinking is one of the main contributors to the development of liver cirrhosis. Professor Najman said the study results suggested that men from lower socio-economic back...

Hives ferment a yeasty brew, attract beetle pest

...alarm pheromones. The first tests showed that when worker bees become alarmed, they produce from 1,500 to 10,000 times more IPA than found in an undisturbed hive. Next the researchers used a gas-chromatagraph-electroantennogram to analyze the chemical sensitively of the insects' antennae. They report in a r...

UCSF study will test new vaginal microbicide for herpes and HIV

... could be several times a month. If she were a sex worker it could be several times a day," she said. The study is being conducted in collaboration with the gel’s manufacturer, Starpharma Holdings, Ltd., of Melbourne, Australia, and is being underwritten by the Sexually Transmitted Infection Clinical Tr...

Why do some queen bees eat their worker bee's eggs?

...k in kin selection theory. His hypothesis was that worker bees, wasps and ants do not reproduce because most...er queen mates with multiple males would have more worker policing. This theory is widespread and in animal behavior textbooks. However, Hamilton's related...

'GreeneChip' -- New diagnostic tool that rapidly and accurately identifies multiple pathogens

... were not. During this outbreak, a healthcare worker from a nongovernmental organization had acute fever and liver failure that culminated in death within one week. PCR assays of RNA extracted from blood showed no evidence of Marburg infection. The same RNA was processed for panviral analysis with th...

New system could drastically reduce herbicide use

...ce?" said Tian. "We could replace the grad student worker with this robotic system." That system evolved into today's model, and two different grad students worked with Tian to present a paper on the robot at the Annual International Meeting of Agricultural and Biological Engineers this July in Portland,...

Queen bee promiscuity boosts hive health

...ting the genetic diversity of their offspring, the worker bees. "This required a particularly nasty experiment, in which we inoculated colonies with the most virulent disease of honeybees that is known, the dreaded American foulbrood disease," said Seeley. Specifically, Tarpy inseminated honeybee queens (...

Honey bee genome holds clues to social behavior

...ope to extrapolate the biology to humans." Adult worker bees perform a number of tasks in the hive when they are young, such as caring for eggs and larvae, and then shift to foraging for nectar and pollen as they age. However, if the hive has a shortage of foragers, some of the young nurse bees will switc...

Fire ant-attacking fly spreading rapidly in Texas

...so because they are diverse in kinds, coming after worker ants in many different ways at once," says Gilbert. "Different phorids specialize on small or large workers, on distinct chemicals laid down by the ants on trails, on time of day and on season and so forth. Our goal is to copy what we believe to be n...

Tramiprosate (Alzhemed? preclinical results published in Neurobiology of Aging

...ents, including lost productivity, absenteeism and worker replacement. ...

Avian flu modeled on supercomputer, explores vaccine and isolation options for thwarting a pandemic

...pulation that matches U.S. census demographics and worker mobility data by randomly assigning the simulated individuals to households, workplaces, schools, and the like. Department of Transportation travel data is used to model long-distance trips during the course of the simulation, realistically capturing...

ASU researchers find link between social behavior, maternal traits in bees

...al societies that include divisions of labor among worker bees. Workers are female bees whose jobs include c...ding honeybee strains distinguished by whether the worker bees were more likely to collect pollen or nectar. Besides their differing collecting habits, the st...

Sociality of sweat bees evolved simultaneously during climate change

...vior in which the animals have permanently sterile worker castes (among other traits). Eusocial animals include honey, bumble, carpenter and sweat (halictid) bees, ants, termites, many wasps as well as certain kinds of shrimp and the naked mole rat. Danforth's study, to be published in a forthcoming issue...

Johns Hopkins flu expert calls for mandatory vaccination of health care workers

... the virus directly from an infected medical staff worker or indirectly from other patients or visitors via ...ebate on the subject of voluntary versus mandatory worker vaccination programs, is based on research showing that despite free and ready access to the vaccine...

Ants, not evil spirits, create devil's gardens in the Amazon rainforest, study finds

... base of a D. hirsuta tree actively patrolled by worker ants. A sticky insect barrier was applied to one ..." the authors conclude. Domatia To find out if worker ants only attack non-host plants, the scientists decided to mimic D. hirsuta's hollow stems, called ...

$6.5 Million Grant for Microarray Center at Yale School of Medicine

... typical corn crop (Zea mays) in Illinois, a field worker noticed a plant so unusual that it was initially believed to be a new species. Its "peculiarly shaped ear" was "laid aside as a curiosity" and the specimen was designated Zea ramosa (from the Latin ramosus, "having many branches"). Due to the alterat...

The genetic origins of corn on the cob

... typical corn crop (Zea mays) in Illinois, a field worker noticed a plant so unusual that it was initially believed to be a new species. Its "peculiarly shaped ear" was "laid aside as a curiosity" and the specimen was designated Zea ramosa (from the Latin ramosus, "having many branches"). Due to the alterat...

Bee mites suppress bee immunity, open door for viruses and bacteria

..., GOX or glucose oxidase, is put into the honey by worker bees and sterilizes the honey and all their food. If bees have mites, their production of GOX decreases. "As mites build up, we suspect that not as much GOX is found in the honey and the honey has more bacteria," says Cox-Foster. "It is likely that ...

Cousin of Asian super termite invades Florida

... from molting, thereby reducing the ability of the worker population to sustain underground colonies. The chemical has a low toxicity to humans and the environment. Less than one gram kills an entire colony containing millions of termites. The control is marketed worldwide as the Sentricon Termite Colony E...

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