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Colony in Biological News

Sex in the Caribbean: Environmental change drives evolutionary change -- eventually

... either by cloning or by sex. To clone a new colony requires immediately available energy, so when ... that founded a sexual colony, while a clonal colony preserves the fragment from the previous colony from which it cloned." As predicted, clonal ...

Seals quickly respond to gain and loss of habitat under climate change

... remains of seals from the now extinct Antarctic colony showed high levels of genetic diversity, probably ... the population dynamics of the now extinct colony and the connectivity between this and modern ... found clear signs of rapid expansion in the new colony 8,000 years ago. This was followed by directional ...

A cure for honey bee colony collapse?

... professional apiaries suffering from honey bee colony depopulation syndrome. They then went on to treat ... two apiaries and found evidence of honey bee colony depopulation syndrome (also known as colony collapse disorder in the USA). They found no ...

Texas-sized tract of single-celled clones

... the first-ever report of a large, natural colony of amoebae clones -- a Texas-sized expanse ... in large clonal colonies. For example, one colony of aspen clones in Utah contains more than 40,000 ... Biologists say the discovery of the clonal colony could yield important clues about the evolution ...

French scientist wins the Journal of Experimental Biology Outstanding Paper Prize

... the paper 'Carbohydrate regulation in relation to colony growth in ants' (Dussutour and Simpson, 2008) and ... But it is a completely different matter for a colony where only 10% of the population supplies ... the needs of the entire colony. So how does the colony regulate its nutritional intake and communicate ...

Making the ultimate family sacrifice

... together by the thousands. About 20 percent of colony members sacrifice themselves to form a stiff ... that the rest can climb to migrate and form a new colony elsewhere. This altruistic behavior is a ... focus all their energies on getting into the new colony -- squeezed out their altruistic brethren? What ...

Fountain of Youth to be found in the anthill?

... aging? Potentially much, says Liebig. Ants in a colony are genetically closely related, yet these ... long as 30 years in some species. As head of the colony they stay in the nest dedicated to perform one ... Workers on the other hand perform brood care, colony maintenance, and complex foraging tasks. Among ...

Worker ants of the world, unite! You have nothing to lose but your fertility

... or ancestral, ants tend to have smaller colony sizes and have much higher levels of conflict ... levels provide a measure of how eusocial the colony is. The less the workers reproduce, the more ... and provides a molecular measure of how an entire colony can be viewed as a single or "superorganism." ...

UC San Diego bioengineers fill holes in science of cellular self-organization

... they found that growth and expansion of a dense colony of cells leads to a dynamic change from relative ... is a biofilm: a dense quasi-two-dimensional colony of bacteria. Biofilms grow in and on living ... and dynamics of a growing two-dimensional colony of non-motile bacteria." His fellow ...

Neighbors from hell: Infanticide rife in guillemot colony

... from neighbouring parents. Yet this particular colony has been monitored for almost thirty years, and ... The research focused on a large established colony of guillemots that inhabit the Isle of May in ... for Ecology & Hydrology has been monitoring this colony since 1981. She comments: "This research ...

Genes and nutrition influence caste in unusual species of harvester ant

... or nurture determines an ant's status in the colony have found a surprising answer. Both. ... caste determination is essential as it allows the colony to respond to changes in need or environmental ... Minor workers increase in size only as the colony grows, probably because larger colonies have more ...

Spiders who eat together, stay together: UBC research

... to stretch the laws of nature and reach enormous colony sizes, UBC zoologists have found. The ... number of incoming prey per spider declines with colony size. But Anelosimus eximius, a species of social spider notable for its enormous colony size some total more than 20,000 individuals ...

The good, the bad and the smelly: USGS at the 2008 Coral Reef Symposium

... to cluster on coral colonies and progress to colony death. For example, growth anomalies on two ... tissue loss ranging from 1 percent of the colony to complete mortality within one year. One-third ... of their tissues resulting in partial to complete colony collapse within one year. Researchers found that ...

Penguins setting off sirens over health of world's oceans

... Boersma has studied the world's largest breeding colony of Magellanic penguins at Punta Tombo on the ... popular 2005 film "March of the Penguins." The colony bred in the same location as in other years, ... danger and uncharacteristically marched the colony more than 3 miles to different ice. The ice they ...

Project succeeding to relocate Caspian terns

... create alternative nesting sites for the largest colony of Caspian terns in the world and to help ... what researchers say is the largest Caspian tern colony in the world. Last year, OSU researchers counted ... after an OSU-led research team discovered the colony there had eaten some 12 million young salmon in ...

Are sacrificial bacteria altruistic or just unlucky?

... of the microbes sacrifice themselves for the colony and which go on to form spores. B. subtilis, a ... "Only a portion of the bacteria in a colony will form spores and only portion of the bacteria ... that fewer than 30 percent of individuals in a colony produce large quantities of the food-converting ...

Playing dead is no game for ant survival

... workers are able to contribute to brood care and colony growth to ensure the survival and fitness of ... workers are spared, allowing them to increase colony growth, which is essential to the survival and fitness of the colony queen. ...

Research uncovers the social dynamics of yellow jackets

... to investigate whether any of the males in a colony fathered more queens than workers. Similar to ... to believe there is no conflict within a colony because of multiple mating. Instead of intense ... he believed there must be a benefit to the colony for each queen having multiple partners. ...

Ant parasite turns host into ripe red berry, biologists discover

... Beach, Fla. In May 2005, when searching for a colony of the ants in a downed tree on Panama's Barro ... Dudley was puzzled to see some members of the colony with bright red abdomens - something he, Yanoviak ... typically, about 5 percent of worker ants in a colony are infected. Cephalotes colonies contain between ...

How Volvox got its groove

... transition from being a single-celled organism to becoming a multicellular colony at least 200 million years ago, during the Triassic Period. At that ... is having only four." Herron is now studying whether the size of the colony affects the degree to which there are different types of cells within the ...

Superglue from the sea

... tissue use," including bone repair, he adds. Building a Sandcastle colony 'One Grain of Sand at a Time' Stewart conducted the study with Hui ... builds big, reef-like colonies the size of Volkswagens," Stewart says. "A colony looks like a mound." In the lab, Stewart previously showed the worms ...

Predatory bacterial swarm uses rippling motion to reach prey

... Early Edition . "When an M. xanthus aggregate is placed inside a colony of E. coli bacteria, the M. xanthus proceeds to eat the colony from the inside out and creates a rippling pattern as the swarm moves ...

Building a better bee

... additional crosses. She said genetic diversity is critical in maintaining colony fitness and resisting pests and diseases. The bee species now known as ... diseases, pesticides, parasites, malnutrition, stress, climate change, and colony collapse disorder, in which bees mysteriously abandon their hives. ...

Saving our bees

... and Asia. The most recent and headline-capturing phenomenon, known as colony collapse disorder, is characterized by the disappearance of adult ... During the course of the summer months, they found that the further a colony was from natural areas, the fewer worker bees it sustained. Williams' team ...

Ants and avalanches: Insects on coffee plants follow widespread natural tendency

... have a natural history like that of many other ants. A queen establishes a colony in a tree, and once the colony reaches a certain size it splits and a satellite nest is established in a ...

Choosing dry or wet food for cats makes little difference

... Animal Nutrition Program at MU, and his team of researchers compared a colony of cats in California raised on dry food with a colony of cats in New Zealand raised on canned food. After comparing ...

Colony collapse disorder symposium added to ESA Annual Meeting

... Lanham, MD; October 17, 2007A late-breaking symposium, colony Collapse Disorder in Honey Bees: Insight Into Status, Potential Causes, ... symposium will introduce many of the areas of concern for bee health and colony Collapse Disorder, and it features many of the top scientists who are ...

For honey bee queens, multiple mating makes a difference

... to be a key factor in making the queen attractive to the worker bees of a colony the more partners, the more attractive the queen is and the longer her ... that appears to attract the worker bees of a hive. A honey bee colony consists of a single queen and several thousand sterile worker bees. ...

Microbes and their hosts -- exploring the complexity of symbiosis in DNA and cell biology

... the bacteria rely on genetic, ecological, and physiological means to maintain the functional flexibility that allows them to meet the needs of an ant colony rather than the individual ants that make up the colony. Their thought-provoking review of the impact of symbiotic lifestyle on genetic variation and ...

Ants more rational than humans

... These ant colonies live in small cavities, as small as an acorn, and are skillful in finding new places to roost. The challenge before the colony was to "choose" a nest, when offered two options with very similar advantages. What the authors found is that in collective decision-making in ...

A young brain for an old bee

... team, will present these findings at the Society of Experimental Biology Annual Meeting in Glasgow on Wednesday 1st July 2009. The oldest bees in a colony are the foragers - a task that demands a high amount of energy. With increasing foraging duration, their capacity for associative learning was found ...

Work of Field Museum scientist addresses question of chance in evolution

... showing each of these stages are alive today. Then as now, these steps are seen as evolved defenses against small predators and parasites on the colony surface. What is remarkable is that the molecular genealogy of the living species shows their origin only 15 million years ago, with the same ...

Scientists tackle the mystery of white-nose syndrome in bats

... closed all its caves to the public, although evidence of the fungus has not been found in the park. "Modeling WNS in Bats at the Individual and colony Levels: Epizootiology and Management" will be a NIMBioS Investigative Workshop. NIMBioS Investigative Workshops involve 30-40 participants, of which ...

Scientists unravel the mystery of white-nose syndrome

... closed all its caves to the public, although evidence of the fungus has not been found in the park. "Modeling WNS in Bats at the Individual and colony Levels: Epizootiology and Management" will be a NIMBioS Investigative Workshop. NIMBioS Investigative Workshops involve 30-40 participants, of which ...

Songbird study from CSHL, CCNY provides concrete measure of biology's impact on culture

... next generation, and so on. The tutors were either paired one-on-one with their progeny, or to mimic a more natural social setting, introduced into a colony of females (who, as it happens, do not sing) and allowed to breed for a few generations. The team found that in either social setting, birds of ...

CCNY, CSHL biologists find birdsong of isolates reverts to norm over several generations

... of evolution in the song occurred whether the subsequent generations of male birds were raised among female birds, who do not sing, and siblings in a colony setting or just among isolate males one-on-one. A similar phenomenon has been observed among deaf children in Nicaragua. There, children ...

Mites on hissing coackroach may benefit humans with allergies

... but on the surface of the Madagascar hissing cockroach. Chemical cues from growing nymphs offer signals that a new host is large enough to house a colony of mites. When a host cockroach dies, the mites wander aimlessly on the carcass until they die, too. Whether the mites offer any benefits to the ...

Wild bees can be effective pollinators

... Over the past few years, honey bee keepers have experienced problems due to colony Collapse Disorder (CCD), which has hurt honey bee populations, causing some growers of fruits, nuts and vegetables to wonder how their crops will be ...

Gene decides whether coral relative will fuse or fight

... When coral colonies meet one another on the reef, they have two options: merge into a single colony or reject each other and aggressively compete for space. Now, a report in the March 19th Current Biology , a Cell Press publication, has found a ...

Teeth of Columbus' crew flesh out tale of new world discovery

... James Burton, in collaboration with researchers from the Autonomous University of the Yucatan in Mexico, are attempting to flesh out the details of a colony that lasted less than five years. The human remains used in the study were buried without the formalities of coffins or shrouds, and were excavated ...
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