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Tag: "social" at biology news

Fire ants: Their true story told by the scientist who loves them

...ers better understand, if not appreciate, both the social biology and ecology of a despised creature and the hows and whys of scientific research. Along the way, he offers rare glimpses into the sometimes maddening lab-and-field lives of "myrmecologists" ?scientists who specialize in the study of ants. Why...

Do angry men get noticed?

... shaped by evolutionary pressures arising from the social environment. ...

A rice future for Asia

...t Asian nations, not to mention their cultural and social identities," he added. Working together with the TRF and PhilRice, IRRI is hosting a five-day rice camp (24-28 April 2006) at its headquarters in Los Baños for the Thai and Filipino students who are aged 16?8. During the five days, the students ?al...

Just like us, social stress prompts hamsters to overeat, gain weight

.... The study asked three questions: Does repeated social defeat increase food intake, weight and fat in ham...the first minute and maintained thereafter through social signals and social communication between the opponents," the authors wrote. The intensity of most ag...

Evolutionary forces explain why women live longer than men

... the breeding scene and competing aggressively for social status and females. From the tail of the peacoc...ic status shows that the gender gap is affected by social standing. Human males in lower socio-economic levels tend to have higher mortality rates than their ...

Wasps queue for top job

...am changed the position of individual wasps in the social hierarchy by removing higher ranked, older wasps, thus promoting their younger relatives. Regardless of age, a wasp's contribution to feeding the queen's young depended only on its position in the queue to inherit queenship. Lower-ranked helpers, a...

The higher the hierarchy, the greater the aggression

Individual variation in social behavior is one of the most striking features of c... that society based on their rank--or place in the social hierarchy. They can only pass on their genes when they reach the top of the hierarchy, usually after...

Scientists describe new African monkey genus ?first in 83 years

...undulu Forest Reserve (three groups). They live in social groups of 30-36 adult males and females, with no evidence of any solitary animals. Worldwide collaboration The research behind the new findings was remarkably collaborative, drawing on the expertise of a team of scientists spread around the worl...

Smokers invite to test vaccine against nicotine addiction

...s the smoker a chance to change the behavioral and social factors that also influence smoking," said Victor Reus, MD, principal investigator for the study at UCSF. Because immune antibodies remain in the body for some time, Reus said it is hoped that the vaccine also will prevent relapse. When a vaccinat...

Einstein researchers take the pulse of a gene in living cells

...tudy was a gene important in the life cycle of the social amoeba Dictyostelium, thousands of which sometimes aggregate into a single slug-like mass. This developmental gene plays a major role in transforming the "slug" into a stalk-like structure called a fruiting body, which releases new amoebae. "The pul...

Predators prefer to hunt small-brained prey

...ories which argue this is important for developing social relationships and using tools." ...

Female guppies risk their lives to avoid too much male attention

...hat fish are not the only species who display this social characteristic. "In many ecosystems, predators are the first to go extinct, and our work shows that this may have many, perhaps unexpected, effects. In this case, females may suffer more sexual harassment." ...

Gorilla susceptibility to Ebola virus: the cost of sociality

...bove, evidence suggested that transmission between social units is also likely to occur, either exclusively or in addition to reservoir-to-gorilla transmission, and the result was a mortality rate of 77% of solitary males. Overall, 95% of the population disappeared in approximately one year. From a conserva...

Researchers appeal for new regulations to save coral reefs from live fish trade

...lancing international trade and local needs is the social inequity that arises from the export of the dwindling coral reef resources of developing tropical nations. "Once those resources are destroyed and forgotten, it is the local people who bear the costs of reduced options for future development," they...

UCLA study of community health project shows how group dynamics affect fitness, eating habits

...LA School of Public Health. "Both the physical and social environment must change. "The model we studied holds promise for extending the reach of worksite wellness programming to organizations, at-risk populations and communities not traditionally engaged by such efforts," she added. "However, many obstac...

New study reveals signaling pathways required for expansion of pancreas stem cells

...es mellitus impose enormous medical, economic, and social costs to both the patient and the health-care system. These experiments provide novel insights into the signaling pathways that are required for expansion of pancreas stem cells," says Sarvetnick. "Our work may provide a starting point toward improvi...

Beekeepers work hard for the honey, despite changing tupelo forest

...is to produce honey. We want more awareness of the social context of beekeeping and how environmental change and sociopolitical and economic factors play out to influence the use and access to tupelo forest." Some beekeepers say that every year they seem to be getting less honey for their efforts. Stallin...

Primates take weather into account when searching for fruits

...' superior cognitive abilities have evolved in the social realm. Many primate species live in complex societ...this favored the evolution of especially developed social skills. Although there is much empirical evidence in favor of the social-intelligence hypothesis, ve...

Cultural transmission in bats: When listening for dinner, bats learn from their neighbors

... new study, Page and Ryan investigated the role of social learning in bat foraging flexibility. Comparing th...l association through three different means: (a) a social learning group, in which a bat inexperienced with the new call-food association was allowed to obser...

Autistic brain has fewer neurons for processing emotion

...as fewer neurons in an area related to emotion and social behavior, according to a new study published in th...ibute significantly to the primary core deficit in social function that defines this disorder," says Emanuel DiCicco-Bloom, MD, professor of pediatric neurolo...

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