Tag: "bees" at biology news
Measuring nectar from eucalypts
...nd by mid-morning. Beekeepers reported that hive bees
were not producing honey under these conditions. Results for grey ironbark showed similarities to spotted gum with regard to the impact of logging, but the species differed markedly in other aspects of nectar production. The results of this study...
Bumblebees make bee line for gardens, National Bumblebee Nest Survey finds
...es continuity of nectar and pollen sources for the bees
throughout spring and summer at a density rarely e...s less easy to explain. It could simply be because bees
are confined to these habitats in heavily cultivated areas, or relate to the fact that bees
Genetic diversity in honeybee colonies boosts productivity
...colonies." For example, the researchers found that bees
in the genetically diverse colonies used sophistic...ication, including waggle dancing, more often than bees
in genetically uniform colonies to discover food sources and direct nest mates to food. Because ther...
Synthetic adhesive mimics sticking powers of gecko and mussel
...n a significant increase in adhesion force. Flies, bees
and other insects also use this strategy. Many researchers before Messersmith have attempted to mimic the gecko foot but have had limited success in replicating the reversible property over many contact cycles. No synthetic mimics have been able to...
Size and positioning of floral anthers facilitates pollen collection by bees
... These flowers are specialized to be pollinated by bees
that release the pollen through vibrations caused by their buzzing. Endress and his coworkers found a diversity of floral structures that may represent different strategies for pollen dispersal, even in the same genus. The appearance of flowering...
Size and positioning of floral anthers facilitates
... These flowers are specialized to be pollinated by bees
that release the pollen through vibrations caused by their buzzing. Endress and his coworkers found a diversity of floral structures that may represent different strategies for pollen dispersal, even in the same genus. The diversification of flowe...
Wood ant queen has no egg-laying monopoly
...species whose colonies are this big, such as honey bees
and leaf cutter ants, have very little worker reproduction. This is because the majority of the workers favor the queen as the egg layer, and prevent reproduction by egg laying workers. When the worker control is effective, egg laying workers do not ...
Bee researcher at Arizona State University is 1 of 20 new Pew Scholars in the biomedical sciences
.... -- Its hard to imagine, for most of us, that the bees
we see buzzing between strands of orange flowers o...ocumented that social reversal, which triggers old bees
(that usually forage outside of the hive) to revert to tasks normally performed by younger bees
Undergraduate research shows leaderless honeybee organizing
...ing to see the level of interaction that the older bees
have with the queen. This doesnt normally happen i... 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 more ge...
Competition, loss of selfishness mark shift to supersociety
...ged in the study of social insect societies ants, bees
and wasps. In these groups, this question of what drives altruism also becomes critical to further understanding of how ancestral or primitive social organizations (with hierarchies and dominance fights, and poorly developed division of labor) evolve...
New study finds genetically engineered crops could play a role in sustainable agriculture
...rganisms such as ladybird beetles, earthworms, and bees
in locales with Bt crops fared better in field trials than those within locales treated with chemical insecticides. This is a groundbreaking study and the first of its kind to evaluate the current science surrounding genetically modified crops. Th...
Moths mimic sounds to survive
...ve suggested that animals such as snakes, owls and bees
use acoustic mimicry. This study takes the next step and provides the definitive experimental evidence for how mimicking sounds helps an animal survive....
Hives ferment a yeasty brew, attract beetle pest
...re the small hive beetle is a minor honeybee pest, bees
quickly isolate an invading beetle, but domesticat...ical that draws the beetles. "It is possible that bees
are being habituated to a low level of alarm hormone,"says James H. Tumlinson, the Ralph O. Mumma Pr...
Researchers at Illinois explore queen bee longevity
...h higher Vg expression than young queens. Worker bees
had much lower levels of Vg expression than queens...ad shown that Vg reduced oxidative stress in honey bees
by scavenging free radicals that can lead to aging or illness. Not surprisingly, queens were more re...
The cost of long tongues
use their extraordinarily long tongues to drink ne...nfirmed this prediction for the first time: orchid bees
with long tongues suck up their nectars more slowly than bees
with shorter tongues. Borrell spent...
The social life of honeybees coordinated by a single gene
... and the queen by reducing oxidative stress. As bees
undergo the complex behavioral shift demanded by t...iological factors repress each other to affect the bees
behavior, with vitellogenin repressing juvenile hormone in younger bees
to inhibit the shift from ne...
Bumblebee house warming -- it takes a village
... when they incubated the colony's young developing bees
or brood. Other workers fanned their wings to coo...s and lowering the nest temperature. One group of bees
was consistently involved incubating across a range of temperatures. In a second experiment, the re...
Honey bee researcher wins National Research Initiative Discovery Award
...ney bee pheromones and their effects on individual bees
and colonies. Pheromones are chemical substances u... 1996. According to http://honeybee.tamu.edu , bees
pollinate about 130 agricultural crops in the U.S. This includes fruit, fiber, nut and vegetable cro...
UCR researchers examine how some invasive plants gain a foothold
...ointed charlock. It is most commonly pollinated by bees
and syrphid flies. Introduced more than a century ago, the California wild radish currently ranges throughout California, south into Baja California and north into Oregon. Other invasive plants that need partners to reproduce and are found in Cali...
Research upsetting some notions about honey bees
...er from Spain, Portugal and elsewhere. When honey bees
collected in Europe and Africa were studied, they ...inct groups, he said. However, the genome of U.S. bees
"was a complete mix of the three different introduced European subspecies," he said. That mixture i...
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