Tue, Jun 27, 2017 | updated 12:42 AM IST

Wild chimps 'surprisingly' live longer!

Updated: Mar 21, 2017 14:01 IST      
Wild chimps 'surprisingly' live longer!

Washington D.C. [USA], Mar. 21 (ANI): Our close primate relatives, chimpanzees, have longer life span, if kept under the right ecological conditions.

This has been revealed after a 20-year demographic study of a large chimpanzee community in Uganda's Kibale National Park.

The study, published in the Journal of Human Evolution, establishes an average life expectancy of about 33 years in its sample of 306 chimpanzees, nearly twice as high as that of other chimpanzee communities and within the 27- to 37-year range of life expectancy at birth of human hunter-gatherers.

These findings are important for understanding the evolution of chimpanzee and hominin life histories, the researchers argue.

"Our findings show how ecological factors, including variation in food supplies and predation levels, drive variation in life expectancy among wild chimpanzee populations," said Brian Wood from Yale University, the study's lead author.

Adding, "They also inform the study of the evolution of human life history, helping us to imagine the conditions that could have changed mortality rates among our early hominin populations."

The Ngogo chimpanzees reside in the center of Kibale National Park, in southwestern Uganda. The directors of the Ngogo Chimpanzee Project, David Watts (Yale), John Mitani (University of Michigan), and Kevin Langergraber (Arizona State University), have monitored births, deaths, immigrations, and emigrations in the unusually large Ngogo chimpanzee community since 1995, producing the largest demographic dataset available for any community of wild chimpanzees.

This study reveals that Ngogo chimpanzees have the highest life expectancy on record for any group of wild chimpanzees.

Favourable ecological conditions largely account for the Ngogo community's high life expectancy, according to the study. The forest in Ngogo provides a relatively consistent and abundant supply of high-energy and nutritious foods, including easily digestible figs. The research team argues that this rich food supply helps buffer the Ngogo chimpanzees against periods of hunger, and helps fuel their ability to stave off diseases that would otherwise lead to higher mortality. The Ngogo chimpanzees also benefit from a low risk of predation, because leopards are not found within Kibale National Park, and from the fact that during the study, the chimpanzees did not experience major disease epidemics, either introduced by humans or due to other causes, like those that have affected wild chimpanzees at several other long-term research sites.

In the same national park, not far from Ngogo, other researchers have studied the life expectancy of chimpanzees in the Kanyawara community. Like Ngogo, this community lacks natural predators, but its life expectancy at birth is nearly 13 years shorter than that of Ngogo. The Ngogo chimpanzees' higher survivorship appears to be an adaptive response to a more abundant and less varied food supply than that of Kanyawara, the researchers argue.

"It has long been proposed that there are extreme differences in the life expectancies of human hunter-gatherers and chimpanzees," said David Watts, co-author of the study. "Our study finds that while maximum lifespan differs a great deal, the differences in average lifespan are not as dramatic as typically thought, especially when chimpanzees are not subjected to major negative impacts caused by humans. In fact, the Ngogo community's pattern of survivorship more closely resembles that of human hunter-gatherers than those documented for other chimpanzee communities." (ANI)

Now, a 'friendly' car horn that alerts without jarring

Updated: Jun 26, 2017 08:14 IST     

Washington D.C. [USA], Jun 26 (ANI): A team of researchers has come up with a car horn that alerts people to danger while reducing the cacophony on city streets.

Full Story >>

When disaster strikes, selfless heroism may not be good

Updated: Jun 24, 2017 17:53 IST     

Washington D.C. [USA], Jun 24 (ANI): Putting others first can cost lives in life-and-death disaster situations involving groups of people, a new study suggested.

Full Story >>

Now, 'self-folding' origami

Updated: Jun 24, 2017 17:38 IST     

Washington D.C. [USA], Jun 24 (ANI): According to a team of researchers, a simple chemical "programming" can induce a single piece of Nafion foil to fold itself using origami and kirigami principles.

Full Story >>

European Union to continue fight against climate change

Updated: Jun 23, 2017 19:50 IST     

Strasbourg [France], June 23 (ANI): The European Council on Thursday reiterated its commitment to fully implement the Paris Agreement on Climate Change, adding that the agreement remains a keystone in global efforts to effectively tackle climate change, and therefore, cannot be renegotiated.

Full Story >>

Scientists understand the formation of sun's spicules

Updated: Jun 23, 2017 11:58 IST     

Washington D.C. [USA], June 23 (ANI): To understand the formation of abundant jets of plasma in the Sun's atmosphere (called spicules), researchers have, for the first time, built a model.

Full Story >>

Washington D.C. [USA], June 22 (ANI): Warmer temperatures mean sea turtles could be driven to extinction, suggests a new study.

Full Story >>

Six cups of ground coffee can improve nose, throat surgery

Updated: Jun 21, 2017 08:42 IST     

Washington D.C. [USA], June 21 (ANI): Rejoice coffee lovers! Researchers have recently improved the accuracy of a scanner used to map the skull of nose and throat surgical patients with six cups of ground coffee.

Full Story >>

Spruce budworm outbreak can put forests at fire risk

Updated: Jun 19, 2017 11:30 IST     

Washington D.C. [USA], Jun 19 (ANI): Turns out, it is not "a moth to a flame," but "a flame to a moth" as a new study has revealed that a spruce budworm outbreak could increase forest fire risk.

Full Story >>

New Delhi [India], June 17 (ANI-Businesswire India): Choosing oneself to become just a successful engineer or a doctor in future is passe. With the growing competition and the growth in career options, Kids and their parents are becoming more confused towards identifying their actual passion and talent. Just as the 10th and 12th board results are out, parents are now worried about what goals have their kids made up in their mind to peruse in future. There are dozens of questions revolving in their head making them befuddled with thoughts like, does my kid fits for his goals or his talent lay in some other streams?

Full Story >>

New 'Phystrology Therapy' may cure high blood pressure

Updated: Jun 16, 2017 10:31 IST     

Washington D.C. [USA], June 16 (ANI): Good news! Here's a promising treatment to cure the chronic condition of high blood pressure, which accounts approximately eight million death of Indians every year.

Full Story >>

Vicious cycle of 'phone snubbing'

Updated: Jun 14, 2017 13:34 IST     

Washington D.C. [USA], Jun 14 (ANI): Turns out, people who are phone snubbed or "phubbed" by others are, themselves, often turning to their smartphones and social media to find acceptance.

Full Story >>

Personalised molecular therapy slows progression of tumors

Updated: Jun 13, 2017 13:45 IST     

Washington D.C. [USA], June 13 (ANI): A study has found that patients with neuroendocrine cancer may experience fewer symptoms and survive longer by undergoing personalised peptide-receptor radionuclide therapy (PRRT).

Full Story >>

Steroids may up effectiveness of AAV-based gene therapy

Updated: Jun 11, 2017 13:29 IST     

Washington D.C. [USA], Jun 11 (ANI): Glucocorticoid steroids, such as prednisone, may improve effectiveness of AAV-based gene therapy by reducing immune response, according to a recent research.

Full Story >>

Washington D.C. [USA], June 10 (ANI): Those common chemicals that manufacturers use to make plastic food containers, water bottles and other consumer products, instead of BPA, do not contribute to obesity, says a study.

Full Story >>

Male farmers at high risk of contracting 'monkey malaria'

Updated: Jun 10, 2017 10:40 IST     

Washington D.C. [USA], June 10 (ANI): Beware! A study has found that in Malaysia, adult male farmers, involved in plantation, clearing vegetation and forestry work were four times more likely to contract monkey malaria.

Full Story >>

Previously unseen teeth in jawbone of Megalosaurus revealed!

Updated: Jun 08, 2017 09:15 IST     

Washington D.C. [USA], June 8 (ANI): Cutting edge technology sheds fresh light on world's first scientifically-described dinosaur, Megalosaurus, thanks to research by WMG at the University of Warwick and the University of Oxford's Museum of Natural History.

Full Story >>

Certain characteristics linked with ISIS anxiety

Updated: Jun 07, 2017 17:12 IST     

Washington D.C. [USA], Jun 7 (ANI): A new study has examined the characteristics of individuals who are most likely to have anxiety concerning threats posed by ISIS.

Full Story >>

Kazakhstan, ISRO in JWG pact for space cooperation

Updated: Jun 07, 2017 15:25 IST     

New Delhi [India], June 7 (ANI): A delegation of the Aerospace Committee (Kazkosmos) of the Ministry of Aerospace and Defense Industry of Kazakhstan recently paid a visit to the Indian Space Research Organization (ISRO) in Bangalore, where prospects for cooperation in the field of space between Kazakhstan and India were discussed.

Full Story >>

Washington D.C. [USA], June 7 (ANI): A study of fruit flies shows that the benefits of protective bacteria, which safeguard organisms from further disease without causing harm, depend on how subsequent infections enter the body.

Full Story >>

Cells' 'Hail Mary' mechanism to rescue broken chromosomes

Updated: Jun 05, 2017 13:33 IST     

Washington D.C. [USA], Jun 5 (ANI): A recent study has found that the 'Hail Mary' mechanism can rescue the cells with severely damaged chromosomes and insights into this method could lead to new cancer therapies.

Full Story >>