Tag: "chimpanzees" at biology news
Rutgers-led research offers new clues in the genetic mysteries of maize
...g, considering that other close relatives such as chimpanzees
and humans differ in less than one percent of their genes. "It looks like significant evolutionary change happened in a relatively short time," said Messing. "Because they are immobile, plants have to adapt to changes more rapidly than animals tha...
Chimpanzee 'workshop' discovered in Congo
...is home to a population of innovative, tool-making chimpanzees
that "fish" for termite dinners. According to a study in the November issue of the journal The American Naturalist, chimps living in the 100-square-mile "Goualougo Triangle" have given researchers a comprehensive snapshot of more complex tool-use am...
Yerkes researchers to present array of new data at Society for Neuroscience Meeting
...y comparing gene activity in the brains of humans, chimpanzees
and rhesus macaques. This finding may explain how ...differing levels of gene activity in the brains of chimpanzees
with brains of humans to further understand the behavioral and cognitive differences between the two...
Sexual competition drives evolution of a sex-related gene
...ich females copulate highly promiscuously (such as chimpanzees
and macaques); and those in which mating practices fall somewhere in between (such as orangutans where a female will copulate with the dominant male, but may also copulate with other males opportunistically). "When we plotted data on the evolution r...
New insights into chimpanzees, tools, and termites from the Congo basin
...orm and function of two distinct tool sets used by chimpanzees
in preying upon termites in central Africa. They d...ed to this species in other parts of Africa, these chimpanzees
of the Congo Basin have shown us that there is still much to learn about the behavior of these apes....
Endurance running may be key to evolution of human body form
...illions of years ago, at the evolutionary split of chimpanzees
and Homo erectus, conspired to make humans unusually strong endurance runners, permitting our ancient ancestors to compete for food with speedy four-legged carnivores and greatly shaping the distinctive human body form that we know today. So say anth...
Yerkes researchers discover baisis for determining handedness in chimpanzees
...arch team coordinated a series of motor tasks with chimpanzees
to determine each animal's hand preference and the...symmetry by confirming that the brain structure of chimpanzees
is similar to the brain structure of humans. Using MRI scans of the chimpanzees' brains, the researc...
Chimpanzee brains are asymmetrical in key areas and their handedness reflects it
...d studies present more evidence that the brains of chimpanzees
are human-like in terms of the relationships among...rry College), took magnetic resonance images of 60 chimpanzees
to measure the anatomy of two key structures in their brains' limbic systems, an early-evolving cent...
Research led by UGA professor reports first routine tool use by wild capuchin monkeys
...ates, but scientists some time ago discovered that chimpanzees
in the wild use tools in several ways. "What we found is that these capuchins are extremely skilled weightlifters," said Fragaszy. "The video we took of them cracking stones shows just how remarkable their ability to lift these stones has become." A...
Lack of potential mates has lead to 'sloppy' gene control and risk of disease for humans
...ff is much less carefully controlled in humans and chimpanzees
compared to other animals. "We are used to viewing us as the pinnacle of evolution but seeing that rodents control their genes much more precisely is somewhat sobering," said Dr Martin Lercher from the University of Bath. "As a species we have becom...
Study in Royal Society journal on sense of fairness in chimpanzees
...ce for inequity increases with social closeness in chimpanzees
by Dr SF Brosnan, Dr HC Schiff and Dr FBM de Waal ...ess likely to react to unfair situations than were chimpanzees
in short-term social groups. This is the first demonstration that reactions to inequity in nonhuman ...
Chimpanzees show quality of relationship drives sense of fairness
...er people involved," said Brosnan. "Our finding in chimpanzees
implies this variability in response is adaptive a...osnan and de Waal made food-related exchanges with chimpanzees
from groups that had lived together either their entire lives or a relatively short time (less than ...
Oldest fossil human protein ever sequenced
...fference in the sequences of Neanderthals, humans, chimpanzees
and orangutans from that of gorillas and most other mammals. This sequence difference is at position nine where the amino acid hydroxyproline is replaced by proline. The authors suggest that this is a dietary response, as the formation of hydoxypro...
RNA project to create language for scientists worldwide
...omicists had previously determined that humans and chimpanzees
share 99 percent of the same protein genes, it has now been discovered in the past two years that so do mice. "The hardware (proteins) for mice and humans is practically the samebut clearly mice and humans are different. Since the hardware is the sa...
Ebola virus: from wildlife to dogs
...ferent species, hence revealed that 12.9 % of wild chimpanzees
carry Ebola virus antibodies, several of the posit...e countries. These results therefore indicate that chimpanzees
are regularly in contact with the animal virus reservoir and that some of them develop non-fatal inf...
Can our genes tell the story of our divergence?
Since humans and chimpanzees
forged separate evolutionary paths some 5 million to 6 million years ago, we shed our hirsute coat and heavy brow, mastered bipedal locomotion, and acquired a knack for abstract thought while our next of kin learned to use tools, and developed the sk...
Cultural norms not unique to human societies
...w study findings that confirm, for the first time, chimpanzees
share the same conformist tendencies. Researchers,...ehaviors, the level of cultural variation shown by chimpanzees
is exceeded only by humans. The study, conducted at the Yerkes National Primate Research Center of E...
Chimpanzees are social conformists
...g to conform and be like their neighbours but that chimpanzees
also have an innate desire to be like everyone els...y copying other members of their species and that chimpanzees
have a bias towards social conformity that has previously been considered to be a unique hallmark of...
More animals join the learning circle
Killer whales and chimpanzees
both pass on "traditions" to other members of their group, according to two separate studies of feeding behaviour. The findings add to evidence that cultural learning is widespread among animals. One study involved killerwhales at Marineland in Niag...
Poaching, logging, and outbreaks of Ebola threaten central African gorillas and chimpanzees
...tural and man-made threats is killing gorillas and chimpanzees
in Central Africa, and experts say $30 million is needed for special programs to save some of mankind's closest relatives from disappearing. An action plan drafted by more than 70 primatologists and other experts who met in Brazzaville, Republic of C...
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