Tag: "colony" at biology news
Search on for treatment of slow-healing wounds
...lms are bacteria that grab onto a surface, build a colony
and then secrete a protective slime that makes them nearly invulnerable to antibiotics and disinfectants. Biofilms can foul drinking water systems, industrial pipelines and cause hard-to-kill infections on medical implants. "Our hypothesis is that...
Sweet yet sophisticated: Honey bee genome lends insight into sociality, sensation and sex
...tion, leading to an increase in social complexity, colony
performance, and fitness." Contact: Martin Beye, Ph.D. Heinrich Heine Universitt Dsseldorf, Germany email@example.com +49-211-81-12075 Reference: Beye, M., et al. 2006. Exceptionally high levels of recombination across the honey b...
Insights into honey bee sex gene could bring sweet success in breeding
...system works fine in nature, where it prevents the colony
from wasting precious energy and resources on abno... csd allele. If too many sterile males result, the colony
may die out. "If we know more details about how many alleles there are and what their frequencies a...
Bee genome information housed at Texas A&M University
...tial to control production of different castes for colony
maintenance, influence honey bee pollination behavior so important to crop production, and even modify the defensive response of the Africanized honey bee making it a less significant threat to human welfare," he said. Genes could literally be "tur...
New species and new records of marine species discovered in NW Hawaiian Islands
...cies he has never seen. "There was this tiny coral colony
that John showed to me off the eastern side of the atoll that I have no idea what it is," he said. "I cannot even place the genus or family it belongs to. It is a complete unknown." During the cruise Dr. Maragos has discovered as many as 11 new sp...
Brain, behavior may have changed as social insect colonies evolved
...urs, were done on highly social species with large colony
sizes. Among these species, age plays an important role in task performance and workers that leave the nest to forage generally have better-developed brains," he said. "We found the opposite pattern with a primitively social wasp. Here, the stay-...
Stormy days ahead for coral reefs
...weather. The research introduces a new concept colony
shape factor (CSF) to translate the myriad shapes and sizes of coral colonies onto a simple scale that measures their vulnerability to dislodgment. Any severe event, like a cyclone, imposes a threshold that can be scored on the same scale, allowing...
Invasive ants territorial when neighbors are not kin
...he same. So ants from different nests in the same colony
do not fight with each other." Five supercolonies of Argentine ants are known to occur in southern California. The largest supercolony extends about 600 miles throughout coastal California and abuts three of the four smaller colonies. At the terri...
Queen bee promiscuity boosts hive health
...ading hypothesis that queens' promiscuity improves colony
disease resistance by boosting 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 ...
MIT creates 3-D scaffold for growing stem cells
...dle. The researchers were able to grow a healthy colony
of adult mouse stem cells on the three-dimensional scaffold without the drawbacks of two-dimensional systems. In addition to helping researchers get a more accurate picture of how cells grow and behave in the body, the new synthetic structure can ...
Bumblebee house warming -- it takes a village
...trong evidence for job specialization, even when a colony
was artificially forced to step up its rate of inc...ind of size-based division of labor might make the colony
more efficient." The researchers studied Bombus huntii, a species of bumblebee common in the Pacifi...
Huddling and a drop in metabolism allow penguins to survive the South Pole cold
...hat emperor penguins who are free ranging in their colony
spend about 50 percent of their time in dense hudd... process similar to hibernation. Entering into the colony
with bulb thermometers, earlier investigators had indeed found that huddling penguins maintain a low...
Adult stem cells to repair hearts damaged by severe coronary artery disease investigated
...n) of a commercially produced protein (granulocyte colony
stimulating factor). The protein helps to release CD34+ stem cells (also known as endothelial progenitor cells) from a subjects bone marrow into the bloodstream. Then, investigators use a cell separation system, similar to the automated systems tha...
Cambodian vulture nests offer hope for species
...st discovered Southeast Asia's only known breeding colony
of slender-billed vultures, one of the world's mo...kong River in Cambodia's Stung Treng Province, the colony
also represents one of the only known slender-billed vulture nesting areas in the world, and therefo...
Female Antarctic seals give cold shoulder to local males
Female Antarctic fur seals will travel across a colony
to actively seek males which are genetically diver...e and the British Antarctic Survey (BAS) studied a colony
of Antarctic fur seals (Arctocephalus gazella) on the subantarctic island of South Georgia. They di...
Microfluidic chip helps solve cellular mating puzzle
...itional biology lab dish thats filled with a large colony
of cells." Using cameras attached to a microscope, the researchers were able to view a microfluidic chip and study the mating behavior of yeast cells in response to different concentrations of pheromone in the presence or absence of Kss1. They were...
Researchers develop technique for bacteria crowd control
...rrent in a very thin film sample cell containing a colony
of bacteria. The current produces electrolysis that changes the local pH level in the vicinity of the electrodes. The bacteria, uncomfortable with the changes in pH, swim away from the electrodes and ultimately congregate in the middle of the experi...
Why some aphids can't stand the heat
...age. Wilson expected all the ibpA genes from one colony
to be the same. She was surprised that, after ...hree times more RNA than the normal genes from lab colony
aphids. The lab colony
genes produced about 50 times more than did the genes carrying the mutated pr...
Healthy reefs hit hardest by warmer temperatures
...ssue or exposed coral skeleton that moves across a colony
as infection progresses. (White isnt the only color of diseased coral other syndromes include black band, yellow blotch and dark spots.) Scientists from the Australian Institute for Marine Sciences made yearly visits to the same reefs, applying ep...
Is climate change likely to increase disease in corals?
...whereas the combination of heat stress and a dense colony
was deadly. What does this mean for corals and the ecosystem they support? If global warming increases the incidence of warm temperature anomalies in tropical oceans the years ahead, these results suggest that corals in high-cover areas will be inc...
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