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Monkeys in Biological News

Bolivian rainforest study suggests feeding behavior in monkeys and humans have ancient, shared roots

Behavioural ecologists working in Bolivia have found that wild spider monkeys control their diets in a similar way to humans, contrary to what has been thought up to now. Rather than trying to maximize their daily energy intake, the monkeys tightly regulate their daily protein intake, so that it s...

Simian foamy virus found in several people living and working with monkeys in Asia

A research team led by University of Washington scientists has found that several people in South and Southeast Asian countries working and living around monkeys have been infected with simian foamy virus (SFV), a primate virus that, to date, has not been shown to cause human disease. The findings...

Ugandan monkeys harbor evidence of infection with unknown poxvirus

Researchers report this month that red colobus monkeys in a park in western Uganda have been exposed to an unknown orthopoxvirus, a pathogen related to the viruses that cause smallpox, monkeypox and cowpox. Most of the monkeys screened harbor antibodies to a virus that is similar but not identica...

Moderate prenatal exposure to alcohol and stress in monkeys can cause touch sensitivity

A new study on monkeys has found that moderate exposure to alcohol and stress during pregnancy can lead to sensitivity to touch in the monkeys babies. In human children, sensitivity to touch is one of a number of characteristics of the approximately 5 percent of children who over-respond to senso...

Island monkeys do not recognize big cat calls

Monkeys living on an island without big cat predators do not show any particular alarm when recorded tiger growls are played to them, according to research by a UC Davis graduate student. The pig-tailed langurs do, however, flee in a hurry from the sound of human voices. "This contributes to a ...

Penn researchers find monkeys able to fend off AIDS-like symptoms with enhanced HIV vaccine

(PHILADELPHIA) Researchers at the University of Pennsylvania School of Medicine have discovered that using an immune system gene to enhance a vaccine used to study HIV in macaque monkeys provides the animals with greater protection against simian HIV (SHIV) than an unmodified vaccine. This multi-...

Humans and monkeys share Machiavellian intelligence

When it comes to their social behavior, people sometimes act like monkeys, or more specifically, like rhesus macaques, a type of monkey that shares with humans strong tendencies for nepotism and political maneuvering, according to research by Dario Maestripieri, an expert on primate behavior and a...

Influence of sex and handedness on brain is similar in capuchin monkeys and humans

Hiram, Ohio, August 29, 2007 Capuchin monkeys are playful, inquisitive primates known for their manual dexterity, complex social behavior, and cognitive abilities. New research now shows that just like humans, they display a fundamental sex difference in the organization of the brain, specifical...

Vaccine combined with short-term postexposure antibiotics protects monkeys from inhalational anthrax

Anthrax vaccine administered in combination with a short course of antibiotics completely protected nonhuman primates from inhalational anthrax, the most lethal form of the disease, according to scientists at the U.S. Army Medical Research Institute of Infectious Diseases (USAMRIID). In a collab...

Rhesus monkeys in Nepal may provide new alternative for HIV/AIDS research

Scientists investigating the genetic makeup of rhesus macaque monkeys, a key species used in biomedical research, have found the rhesus in Nepal may provide a suitable alternative to alleviate a critical shortage of laboratory animals used in work to develop vaccines against diseases such as HIV/AI...

'Executive' monkeys influenced by other executives, not subordinates

When high-ranking monkeys are shown images of other monkeys glancing one way or the other, they more readily follow the gaze of other high-ranking monkeys, Duke University Medical Center neurobiologists have discovered. By contrast, they tend to ignore glance cues from low-status monkeys; while low...

Performing monkeys in Asia carry viruses that could jump species to humans

Some urban performing monkeys in Indonesia are carrying several retroviruses that are capable of infecting people, according to a new study led by University of Washington researchers. The results indicate that contact with performing monkeys, which is common in many Asian countries, could represen...

'Shifty-eyed' Monkeys Offer Window Into Brain's Social Reflexes

Neurobiologists at Duke University Medical Center have found the strongest evidence yet that monkeys show the same keen 'social reflexes' that humans do -- shifting their attention in response to the direction of gaze of another individual. The researchers said their findings mean that monkeys can ...

Gambling monkeys give insight into neural machinery of risk

Duke University Medical Center neurobiologists have pinpointed circuitry in the brains of monkeys that assesses the level of risk in a given action. Their findings -- gained from experiments in which they gave the monkeys a chance to gamble to receive juice rewards -- could give insights into why h...

Rhesus monkeys can assess the visual perspective of others when competing for food

Researchers Jonathan Flombaum and Dr. Laurie Santos, both from Yale University, have found that rhesus monkeys consider whether a competitor can or cannot see them when trying to steal food. Working with semi-free-ranging rhesus monkeys on the island of Cayo Santiago in Puerto Rico, Flombaum and...

New monkey discovered in Brazil

...discovery of a new monkey in a remote region of the Amazon in Brazil. The monkey is related to saddleback tamarins, which include several species of monkeys known for their distinctively marked backs. The newly described distinct subspecies was first seen by scientists on a 2007 expedition into the state ...

Urban myth disproved: Fingerprints do not improve grip friction

...y for? According to Roland Ennos, from the University of Manchester, other primates and tree-climbing koalas have fingerprints and some South American monkeys have ridged pads on their tree-gripping tails, so everyone presumed that fingerprints are there to help us hang onto objects that we grasp. This theor...

Versartis presents positive preclinical data on 2 product candidates at ENDO 09

...l data presented today show that VRS-317 demonstrated in vivo potency equal to daily hGH, and sustained plasma levels and pharmacodynamic responses in monkeys without toxicity. Potential benefits of VRS-317 include its stability at room temperature in a liquid formulation and the ability to dose monthly wit...

Novel vaccine approach offers hope in fight against HIV

...les that block infection, the scientists protected monkeys from infection by a virus closely related to HIVth... administration of the AAV carriers, the immunized monkeys were injected with live, AIDS-causing SIV. The majority of the immunized monkeys were completely protected from SIV infection, and ...

Drugs needed to preserve eggs for reproduction need to be given in stages

...to survive drought conditions. Scientists like Dr. Eroglu, are showing that these sugars, such as trehalose used by tardigrades, also can help humans, monkeys and other species that don't naturally produce them. With human egg preservation, the sugars currently are placed in the medium along with the cryo...

Beyond 'ooh-ooh, aah-aah'-- expert on monkey communication kicks off Darwin series, May 5

... Peter Marler and began an 11-year study of vervet monkeys in Amboseli National Park, Kenya. That work is described in How monkeys See the World, published in 1990 by the University... focus of Seyfarth's research group include rhesus monkeys on Cayo Santiago, Puerto Rico; elephants in Sri La...

Laughing hyenas, wailing levees, the sound of cheese and blaring bagpipes

...espond to looming sounds sooner than their typically larger, stronger male counterparts -- though both groups perceive receding sounds equally. Rhesus monkeys also spend less time looking at receding sounds than approaching sounds. "These reactions are influenced by evolutionary forces; it's a good thing to ...

New nucleotide could revolutionize epigenetics

.... I think this finding will electrify the field of epigenetics." Genes alone cannot explain the vast differences in complexity among worms, mice, monkeys and humans, all of which have roughly the same amount of genetic material. Scientists have found that these differences arise in part from the dynamic...

Potential new HIV drug may help patients not responding to treatment

...ch published tomorrow in The Journal of Immunology . Scientists looking at monkeys with the simian form of HIV were able to reduce the virus levels in the blood to undetectable levels, by treating the monkeys with a molecule called D-1mT alongside Anti-Retroviral Therapy (ART). Si...

Cutting-edge amfAR grants fight HIV/AIDS in the lab and on the phone

...ase caused by HIV, the virus is armed with its own proteins to counteract these defenses. Slight differences in the protein TRIM5-alpha between rhesus monkeys and humans mean that the rhesus form of the protein can inhibit HIV infection while the human form cannot. Dr. Christensen will document which cell pr...

Primate culture is just a stone's throw away from human evolution, study finds

...ists have been studying stone-handling behavior in several troops of Japanese macaques to catch a unique glimpse of primate culture. By watching these monkeys acquire and maintain behavioral traditions from generation to generation, the scientists have gained insight into the cultural evolution of humans. ...

How mirror neurons allow us to learn and socialize by going through the motions in the head

...to study neurons dedicated to control of hand movement. This led to the surprising observation that some of the neurons responded in the same way when monkeys saw a person pick up a piece of food as when they were doing it themselves. This introduced the principle of the mirror neuron as a neuron capable of ...

'Junk' DNA proves functional

...fic Advisory Board. "We have suspected for some time that one of the major ways species differ from one another for instance, why rats differ from monkeys is in the regulation of the expression of their genes: where are the genes expressed in the body, when during development, and how much do they respo...

'Living fossil' tree contains genetic imprints of rain forests under climate change

...ly and can't tolerate saltwater. So how did Symphonia reach the neotropics? Most likely the seeds hitched rides from Africa on rafts of vegetation, as monkeys did, Dick said. Even whole trunks, which can send out shoots when they reach a suitable resting place, may have made the journey. Because Central and ...

How we see objects in depth: The brain's code for 3-D structure

...yl Krieger Mind-Brain Institute at The Johns Hopkins University. In the study, Connor and a postdoctoral fellow, Yukako Yamane, trained two rhesus monkeys to look at a computer monitor while 3-D pictures of objects were flashed on the screen. At the same time, the researchers recorded electrical response...

Parkinson's Disease Foundation announces award of $150,000

...y will examine the potential of iPS cells by reverting skin cells of Rhesus monkeys into iPS cells and directing the cells to become dopamine neurons. Next, D...ang and Dr. Emborg hope that implanting the transformed cells back into the monkeys from whom they were originally taken will replace the dopamine neurons miss...

Birth control has long-term effect on hormone exposure

... monkeys, Latanya M. Scott, Ph.D., discovered that monkeys who had been given birth control earlier in life h...ine cancers later in life, this new observation in monkeys may shed light on the mechanism behind the cancer-...esearchers began with 181 premenopausal cynomolgus monkeys and followed them for seven years in a study desig...

Coating improves electrical stimulation therapy used for Parkinson's, depression, chronic pain

...mplanting electronic nerve stimulators, doctors elsewhere have provided a quadriplegic patient with the ability to move a computer cursor at will, and monkeys have been able to move objects in a virtual world with mere mind power. For individuals who lose an arm or leg and rely on prosthetics, implanted stim...

Unexpected large monkey population discovered

... 1990s. "Whether it's protecting gorillas in the Republic of Congo or monkeys and gibbons in Cambodia, conservation can and does work when you have gove...recent census in Cambodia took place in a former logging area where the two monkeys were once extensively hunted. Then in 2002, the Minister of Agriculture, F...

New book further supports controversial theory of 'Man the Hunted'

...lls and holes in a fossil cranium into which sabertooth cat fangs fit, says Sussman. The predation rate on savannah antelope and certain ground-living monkeys today is around 6 percent to 10 percent as well. Sussman and Hart provide evidence that many of our modern human traits, including those of coopera...

Tips from the Journals of the American Society for Microbiology

... South Carolina have developed a novel four-component vaccine that protects monkeys against all four strains of dengue virus and may potentially offer protecti...ed on a complex adenovirus vector provides significant protection in rhesus monkeys against all four serotypes of dengue virus. Journal of Virology , 82. 14:...

Big brains arose twice in higher primates

... of the skulls, jaws, and teeth of 17 different species of living New World monkeys that ranged across the full spectrum of body sizes. This study is one of th...as in the apes (of which humans are the extreme case) and the cercopithecid monkeys of Africa and Asia." ...

Primate's scent speaks volumes about who he is

... of individual quality that both sexes can recognize," she said. Lemurs, distant primate cousins of ours who split from the family tree before the monkeys and apes parted ways, have a complex and elaborate scent language that until recently was completely undiscovered by humans. Drea said it's language t...

Ancient 'Nutcracker Man' challenges ideas on evolution of human diet

...e mostly soft items but fall back on hard nuts or palm fronds. Old World monkeys are found today in South and East Asia, the Middle East, Africa and Gibraltar at the southern tip of Spain. New World monkeys are found in tropical forest environments in southern Mexico, Central and S...

Decade of the Mind symposium in Iowa to emphasize need for $4 billion in federal support

... Work. Dr. Robert Seyfarth, a professor of psychology at the University of Pennsylvania in Philadelphia. Seyfarth began his research with vervet monkeys in Kenya, and since 1992 has been involved in a study of communication, cognition and behavior among baboons in the Moremi Game Reserve, Botswana. His...
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