PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Features of southeast European human ancestors influenced by lack of episodic glaciations

Lack of geographical isolation may have led to unique physical features seen in southeastern European human ancestors, says study

Features of southeast European human ancestors influenced by lack of episodic glaciations
2013-02-07
(Press-News.org) A fragment of human lower jaw recovered from a Serbian cave is the oldest human ancestor found in this part of Europe, who probably evolved under different conditions than populations that inhabited more western parts of the continent at the same time, according to research published February 6 in the open access journal PLOS ONE by William Jack Rink of McMaster University, Canada, and the international team under the direction of Dušan Mihailović, University of Belgrade, Serbia, and Mirjana Roksandic, University of Winnipeg, Canada.

The fossil was found to be at least 397,000 years old and possibly older than 525,000 years old, a time when distinctly Neandertal traits began to appear in Europe. The evolution of these traits was strongly influenced by periodic isolation of groups of individuals, caused by episodic formation of glaciers. Humans in southeastern Europe were never geographically isolated from Asia and Africa by glaciers, and according to the authors, this resulted in different evolutionary forces acting on early human populations in this region.

Roksandic explains that their study confirms the importance of southeast Europe as a 'gate to the continent' and one of the three main areas where humans, plants and animals sought refuge during glaciations in prehistoric times. She adds, "We have very few fossils of hominins in general from this time, a period that was critical for shaping the appearance and evolution of uniquely human morphology and behaviors."

INFORMATION:

Citation: Rink WJ, Mercier N, Mihailovic D, Morley MW, Thompson JW, et al. (2013) New Radiometric Ages for the BH-1 Hominin from Balanica (Serbia): Implications for Understanding the Role of the Balkans in Middle Pleistocene Human Evolution. PLoS ONE 8(2): e54608. doi:10.1371/journal.pone.0054608

Financial Disclosure: Natural Sciences and Engineering Council of Canada to WJR and MR (grant numbers not disclosed). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.

Competing Interest Statement: The authors have declared that no competing interests exist.

PLEASE LINK TO THE SCIENTIFIC ARTICLE IN ONLINE VERSIONS OF YOUR REPORT (URL goes live after the embargo ends): http://dx.plos.org/10.1371/journal.pone.0054608

[Attachments] See images for this press release:
Features of southeast European human ancestors influenced by lack of episodic glaciations

ELSE PRESS RELEASES FROM THIS DATE:

Antibiotic cream has high cure rate, few side effects in treating cutaneous leishmaniasis

2013-02-07
Fort Detrick, Md. – An international collaboration of researchers from the U.S. Army Medical Research and Materiel Command (USAMRMC), Tunisia and France has demonstrated a high cure rate and remarkably few side effects in treating patients with cutaneous leishmaniasis (CL) with an investigational antibiotic cream. CL is a parasitic disease that causes disfiguring lesions, with 350 million people at risk worldwide and 1.5 million new cases annually, including U.S. military personnel serving abroad and the socio-economically disadvantaged in the developing world, especially ...

Lungs of the planet reveal their true sensitivity to global warming

2013-02-07
Tropical rainforests are often called the "lungs of the planet" because they generally draw in carbon dioxide and breathe out oxygen. But the amount of carbon dioxide that rainforests absorb, or produce, varies hugely with year-to-year variations in the climate. In a paper published online this week (Feb 6 2013) by the journal Nature, a team of climate scientists from the University of Exeter, the Met Office-Hadley Centre and the NERC Centre for Ecology & Hydrology, has shown that these variations reveal how vulnerable the rainforest is to climate change. Lead author ...

Research shows 'listening to your heart' could improve body image

2013-02-07
Researchers from the Department of Psychology at Royal Holloway university asked healthy female student volunteers aged between 19 – 26, to concentrate hard and count their own heartbeats, simply by "listening" to their bodies. Their accuracy in this heartbeat perception test was compared with their perception of their bodies as objects, measured by scores on the Self-Objectification Questionnaire. According to the results, the more accurate the women were in detecting their heartbeats, the less they tended to think of their bodies as objects. These findings have important ...

Drop in alcohol-related deaths by nearly a third follows minimum alcohol price increase of 10 percent

2013-02-07
A new study made available online today in 'Addiction' shows that, between 2002 and 2009, the percentage of deaths caused by alcohol in British Columbia, Canada dropped more than expected when minimum alcohol price was increased, while alcohol-related deaths increased when more private alcohol stores were opened. The paper has significant implications for international alcohol policy. The study was carried out by researchers from British Columbia, the westernmost province in Canada, using three categories of death associated with alcohol – wholly alcohol attributable ...

Biodiversity helps protect nature against human impacts: Study

2013-02-07
"You don't know what you've got 'til it's collapsed." That's how University of Guelph integrative biologists might recast a line from an iconic folk tune for their new research paper warning about the perils of ecosystem breakdown. Their research, published today as the cover story in Nature, suggests farmers and resource managers should not rely on seemingly stable but vulnerable single-crop monocultures. Instead they should encourage more kinds of plants in fields and woods as a buffer against sudden ecosystem disturbance. Based on a 10-year study, their paper also ...

Genetic variation doubles risk of aortic valve calcification

2013-02-07
Researchers have found a genetic variant that doubles the likelihood that people will have calcium deposits on their aortic valve. Such calcification, if it becomes severe, can cause narrowing or a blockage of the aortic valve, a condition called aortic stenosis. The study is the first large-scale, genome-wide association study to uncover a genetic link to aortic valve calcification. An article detailing the findings is published in the February 7, 2013 issue of the New England Journal of Medicine. The study's lead investigators — from Johns Hopkins, Harvard University, ...

Scientists discover how chromosomes keep their loose ends loose

Scientists discover how chromosomes keep their loose ends loose
2013-02-07
LA JOLLA, CA – February 6, 2013 – We take it for granted that our chromosomes won't stick together, yet this kind of cellular disaster would happen constantly were it not for a protein called TRF2. Now, scientists at The Scripps Research Institute (TSRI) have discovered key details of how TRF2 performs this crucial chromosome-protecting function. The finding represents a significant advance in cell biology and also has implications for our understanding of cancer and the aging process. "Cells tend to interpret their chromosome ends as sites of DNA damage, and without ...

Most common form of heart valve disease linked to unusual cholesterol

2013-02-07
Montreal, February 7th, 2013 – Researchers have discovered a gene associated with a form of cholesterol that increases the risk of developing aortic stenosis, the most common form of heart valve disease, by more than half. This international study, involving the Research Institute of the McGill University Health Centre (RI-MUHC), is the first of its kind to uncover a genetic link with aortic valve disease – a condition that affects more than 5 million people in North America. The results of the study, published in the New England Journal of Medicine, point to the first ...

Older bikers 3 times as likely to be seriously injured in crashes as younger peers

2013-02-07
Older bikers are up to three times as likely to be seriously injured in a crash as younger motor bike enthusiasts, indicates US research published online in Injury Prevention. The findings are a cause for concern, because of the increasing popularity of motor bike ownership among older adults, and their increasing tendency to be involved in a crash, warn the authors. In the US, the percentage of bikers over the age of 50 has more than doubled from just over 1 in 10 in 1990 to 1 in 4 in 2003, while the average age of those involved in a motorbike crash has been steadily ...

One in 20 cases of pre-eclampsia may be linked to air pollutant

2013-02-07
One in every 20 cases of the serious condition of pregnancy, pre-eclampsia, may be linked to increased levels of the air pollutant ozone during the first three months, suggests a large study published in the online journal BMJ Open. Mothers with asthma may be more vulnerable, the findings indicate. Pre-eclampsia is characterised by raised blood pressure and the presence of protein in the urine during pregnancy. It can cause serious complications, if left untreated. The authors base their findings on almost 121,000 singleton births in Greater Stockholm, Sweden, between ...

LAST 30 PRESS RELEASES:

Are lifetimes of big appliances really shrinking?

Pink skies

Monkeys are world’s best yodellers - new research

Key differences between visual- and memory-led Alzheimer’s discovered

% weight loss targets in obesity management – is this the wrong objective?

An app can change how you see yourself at work

NYC speed cameras take six months to change driver behavior, effects vary by neighborhood, new study reveals

New research shows that propaganda is on the rise in China

Even the richest Americans face shorter lifespans than their European counterparts, study finds

Novel genes linked to rare childhood diarrhea

New computer model reveals how Bronze Age Scandinavians could have crossed the sea

Novel point-of-care technology delivers accurate HIV results in minutes

Researchers reveal key brain differences to explain why Ritalin helps improve focus in some more than others

Study finds nearly five-fold increase in hospitalizations for common cause of stroke

Study reveals how alcohol abuse damages cognition

Medicinal cannabis is linked to long-term benefits in health-related quality of life

Microplastics detected in cat placentas and fetuses during early pregnancy

Ancient amphibians as big as alligators died in mass mortality event in Triassic Wyoming

Scientists uncover the first clear evidence of air sacs in the fossilized bones of alvarezsaurian dinosaurs: the "hollow bones" which help modern day birds to fly

Alcohol makes male flies sexy

TB patients globally often incur "catastrophic costs" of up to $11,329 USD, despite many countries offering free treatment, with predominant drivers of cost being hospitalization and loss of income

Study links teen girls’ screen time to sleep disruptions and depression

Scientists unveil starfish-inspired wearable tech for heart monitoring

Footprints reveal prehistoric Scottish lagoons were stomping grounds for giant Jurassic dinosaurs

AI effectively predicts dementia risk in American Indian/Alaska Native elders

First guideline on newborn screening for cystic fibrosis calls for changes in practice to improve outcomes

Existing international law can help secure peace and security in outer space, study shows

Pinning down the process of West Nile virus transmission

UTA-backed research tackles health challenges across ages

In pancreatic cancer, a race against time

[Press-News.org] Features of southeast European human ancestors influenced by lack of episodic glaciations
Lack of geographical isolation may have led to unique physical features seen in southeastern European human ancestors, says study