Sentences with phrase «female chimpanzees»

But to determine whether subtle reproductive hierarchies might in fact exist, as in the case of female chimpanzees, veteran lion researchers Craig Packer and Anne Pusey of the University of Minnesota decided to take a closer look.

In Gombe, female chimpanzees often carry their infants with them into trees, making it very difficult for researchers to get accurate recordings from the ground.

This may explain why female chimpanzees tend to go into hiding for weeks or months when they give birth.

Young female chimpanzees showed much more diverse object manipulation types,» she said.

The legendary female chimpanzee of the Planet of the Apes films resumes her life as a public intellectual after more than twenty years of seclusion in remote circuses and primate study labs.

Scientists had reported anecdotes of older female chimpanzees (male chimps generally do not reach old age) that developed presbyopia.

Picture two female chimpanzees hanging out under a tree.

One day I followed an adult female chimpanzee that has five kids.

But male and female chimpanzees achieve social status in dramatically different ways, says a new study by primatologists at Duke University.

Chema and Rumumba, two low - ranking immigrant female chimpanzees, take turns grooming each other in Gombe National Park, Tanzania.

«Female chimpanzees don't fight for «queen bee» status: Study of social rank in wild chimps shows striking differences between the sexes.»

To explore how female chimpanzees maneuver up and down the social ladder, Foerster, Pusey and their colleagues plumbed more than 40 years of daily records documenting the behaviors of 100 or so wild chimpanzees residing in Gombe National Park in Tanzania, where Pusey first began working alongside Jane Goodall in 1970.

In an earlier study at Gombe (Tanzania), immature female chimpanzees were also observed to pay closer attention to their mothers using tools and became proficient tool users at an earlier age than males.

Cognitive and motor gaining in female chimpanzees.

This month, Fusco will be resuming her role as the legendary female chimpanzee psychologist Dr. Zira at Participant Inc., as part of the Performing -LSB-.....]

For example, female chimpanzees often mate with both low - and high - ranking males to confuse paternity and reduce the chances that any male will kill her offspring.

Unlike the more gregarious males, female chimpanzees tend to be loners, spending much time by themselves or with their own children.

A low - ranking young female chimpanzee was wounded in a fight when she attempted to enter the female social hierarchy.

She points to the behavior of female chimpanzees, gorillas, and macaques as an indication of a past in which human females flaunted their desire.

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.

The apes included in the study were named Panpanzee, a female chimpanzee (Pan troglodytes), and Panbanisha, a female bonobo (Pan paniscus).

Female chimpanzees have sex with multiple males while ovulating, so a male that can produce more sperm has a better chance of dislodging other males» sperm and a better chance of his own sperm's survival.

For example, female chimpanzees are known to prefer to have sex with different males within the fertile phrase than they prefer outside of this phase — a strategy thought to improve their offspring's chances of survival.

Despite the benefits of social status on their reproductive success — higher - ranking females appear to have access to better food and higher infant survival than their low - ranking counterparts — the tendency of female chimpanzees to «wait their turn» rather than fighting for rank reveals the competing priorities males and females face when ensuring the success of their offspring.

The team used a new rating system to document these interactions, allowing them to determine the rank orders of male and female chimpanzees and watch how they shifted over time.

Compared to males, female chimpanzees «likely have to consider a long - term strategy,» Foerster said.

Cerebrovascular accident (stroke) in captive, group - housed, female chimpanzees.

Kitty, a female chimpanzee that gave birth to many offspring used in laboratory experiments, has died in a Texas animal sanctuary, the Humane Society of the United States announced Friday.

Dr. Cronin and doctoral student Edwin Van Leeuwen monitored the behaviour of a female chimpanzee that had recently lost her 16 - month - old infant.