Sentences with phrase «among chimpanzees»

Did you immediately recognize distinctive personalities among the chimpanzees?

Infanticide, for example, is extremely common among chimpanzees, but humans tend to kill other adults.

Although the results of sexual liberation are clear among bonobos, no one is sure why sex has been elevated to such a high position in this species and why it is restricted merely to reproduction among chimpanzees.

Perhaps the mechanisms that allow collective action among chimpanzees served as building blocks for the subsequent evolution of even more sophisticated cooperation later in human evolution.»

Observations of lethal fighting among chimpanzees, our close genetic relatives, have persuaded many people that war has deep biological roots.

It is still unclear how common trisomy 22 is among chimpanzees.

And it may be unique to humans: Other studies have failed to spot overimitation among chimpanzees and orangutans.

We see the same effect among chimpanzees, too.

Our next step is to start exploring our dataset in the search of such patterns of selection, for new signatures of gene flow among chimpanzee subspecies.»

Not exact matches

For example, in one of the better chapters, entitled «Human Justice and Animal Fairness», the reader is introduced to Maasai systems of gift - giving, game theory as applied to chimpanzee behaviour, canine sensitivity to fairness, rules of play among wolves and rats, before a brief detour into Martha Nussbaum's development of Rawlsian justice theory leads us to an extended discussion of Aquinas» understanding of justice as a virtue, acquired and infused.

Psychologists who analyzed video footage of a female chimpanzee, a female bonobo and a female human infant in a study to compare different types of gestures at comparable stages of communicative development found remarkable similarities among the three species.

A widespread belief that male chimpanzees trade meat for sex turns out to be baseless, suggesting that sexual bartering among humans may be a relatively recent phenomenon.

Environmental conditions can also override biology among baboons, who, much like chimpanzees, seem hardwired for aggression.

According to Fouts, who helped teach sign language to Washoe, perhaps the world's most famous chimpanzee, the practice is just as common, and perhaps more long - lived, among the chimps.

«In regions of the chromosome where we can align all three species, the sequence similarity fits with what we know about the evolutionary relationships among the species — humans are more closely related to chimpanzees.

Among nonhuman primates, chimpanzees have the highest, followed by orangutans and then gorillas and some monkeys.

Great apes, or hominids, are a group of species that includes gorillas, humans, chimpanzees and bonobos, among others.

Christophe Boesch, a primatologist at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany, says that his team has observed similar behavior among chimps at Tai Forest in the Côte d'Ivoire and agrees that «we have certainly underestimated awareness of death in chimpanzees.»

Thomas Rowell, director of the New Iberia Research Center in western Louisiana, which houses the largest number of chimpanzees among NIH - supported research centres, says that his centre «concurs in principal with most of the recommendations» made by the IOM.

Now, as part of a radical approach to animal welfare and conservation, 30 or more eminent biologists, philosophers and writers (Kortlandt and Teleki among them) are to launch what amounts to a citizen's charter for chimpanzees.

But the INSIGHT model considers the changes among dozens of human individuals and close relatives, such as the chimpanzee, which provides a picture of evolution over much shorter time frames.

From the human perspective, few events in evolution were more momentous than the split among primates that led to apes (large, tailless primates such as today's gorillas, chimpanzees, and humans) and Old World monkeys (which today include baboons and macaques).

The research has been published in the latest edition of Animal Behaviour titled Grooming decisions under structural despotism: the impact of social rank and bystanders among wild male chimpanzees.

Malaria parasites, although widespread among wild chimpanzees and gorillas, have not been detected in bonobos, a chimp cousin.

According to the researchers who recorded the events with a video camera (see video above), this is the first time such compassionate mourning behavior has been observed outside of humans and chimpanzees, and it could indicate that mourning is more widespread among primates than previously thought.

«Such a sophisticated way of keeping your partner in check has previously only been shown in humans and chimpanzees, and is a complete novelty among birds,» ends Massen.

The study, which appeared online Oct. 14 in the journal Scientific Reports, provides the first detailed look at how social status among wild chimpanzees changes throughout their lifetimes.

Like human kids bringing back bugs from school, play among young wild chimpanzees may spread respiratory infections to their families

Koops added: «Given the close evolutionary relationship between chimpanzees, bonobos and humans, insights into species and sex differences in «preparation» for tool use between chimpanzees and bonobos can help us shed light on the functions of the highly debated gender differences among children.»

This is particularly true among extant Hominoidea, which show diverse patterns of variation (e.g., Plavcan, 2001); for instance, gorillas are polygynous species with strong sexual dimorphism due to intense male - male competition, whereas chimpanzees are promiscuous with definitively smaller sexual dimorphism.

Soon it will be possible to line up the genomes of the rat, the dog and the chimpanzee, among others.

Despite the explosive growth in size and complexity of the human brain, the pace of evolutionary change among the thousands of genes expressed in brain tissue has actually slowed since the split, millions of years ago, between human and chimpanzee, an international research team reports in the December 26, 2006, issue of the journal, PLOS Biology.

Differences in cortical serotonergic innervation among humans, chimpanzees, and macaque monkeys: a comparative study.

Scientists have mapped many animal genomes, among them that of the chimpanzee, mouse, rat, fruit fly, roundworm and puffer fish.

Cortical dopaminergic innervation among humans, chimpanzees, and macaque monkeys: a comparative study.

Chimpanzees are among the closest living relatives of humans, making them a key species to study in order to understand the evolution of the human brain.

Cholinergic innervation of the frontal cortex: differences among humans, chimpanzees, and macaque monkeys.

In this paper, we discuss the proposed hypotheses and develop predictions for policing in chimpanzees, where conflicts often arise among females over access to food [28] or among males over access to females [29] and may result in severe dyadic or even polyadic agonistic interactions [10].

While baring your teeth might be friendly among Homo sapiens, it can be a deadly threat among a host of other animals, from chimpanzees to wolves.

Since then, Murchison Falls has been a popular destination among tourists, who visit the area for the chance to see the incredible wildlife, especially the chimpanzees and rare birds.

Together with his other books for general readers, such as The Ape and the Sushi Master, Bonobo, Peacemaking Among Primates, and Chimpanzee Politics, you get a good view of what the ape - human transition might have been from.

Corvids aren't alone in behaving in these ways that delight researchers: porpoises, chimpanzees, elephants, among others, have passed these tests, earning themselves our accolade of «intelligent.»

In another study, when prompted to locate a peanut hidden among several closed cups, chimpanzees choose randomly even when the researcher pointed to the one with the peanut.