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Latest Old World monkeys Stories

Study Shows How Cooperation Can Trump Competition In Monkeys
2012-07-04 16:52:19

Being the top dog – or, in this case, the top gelada monkey – is even better if the alpha male is willing to concede at times to subordinates, according to a study by researchers from the University of Pennsylvania, the University of Michigan and Duke University. Alpha male geladas who allowed subordinate competitors into their group had a longer tenure as leader, resulting in an average of three more offspring each during their lifetimes. The findings, collected from data...

Insights Into Primate Diversity Learned From The Rhesus Macaque
2012-06-29 09:27:37

New research published in BMC Genetics shows that the rhesus macaque has three times as much genetic variation than humans. However despite much of this extra variation being within genes, it does not affect protein function. Consequently damaging variations are at similar levels in macaques and humans - indicating a strong selection pressure to maintain gene function regardless of mutation rate or population size. Humans and rhesus macaques shared a common ancestor approximately 25...

2012-06-21 01:59:03

Princeton researcher explains link from friendly primate facial gesture to human speech The throat and facial movements that twist the air pushing through your vocal cords into words could be rooted in the well-meaning expressions primates exchange with each other, according to two recent studies based at Princeton University. The researchers found that the oral-facial component of human speech mirrors the rhythm, development and internal dynamics of lip smacking, a friendly...

Key To Ancient Primate Behavior May Come Inner Ear
2012-06-13 16:42:12

CT scans of fossilized primate skulls or skull fragments from both the Old and New Worlds may shed light on how these extinct animals moved, especially for those species without any known remains, according to an international team of researchers. The researchers looked at the bony labyrinth in fossil remains and compared them to CT scans previously obtained from living primate species. The bony labyrinth of the inner ear is made up of the cochlea -- the major organ of hearing -- the...

2012-04-26 09:33:24

Among vervet monkeys, social learning is strongly influenced by matrilineal family members, according to a study published Apr. 25 in the open access journal PLoS ONE. The authors of the report, led by Erica van de Waal of University of St. Andrews, presented wild vervets with sand-covered grapes and monitored their grape-cleaning behavior to investigate different channels of social learning. Some monkeys cleaned the grapes by rubbing them between their hands or substrate, others peeled...

Real Words vs. Non-Words, Baboons Know The Difference
2012-04-13 11:25:13

Lawrence LeBlond for RedOrbit.com The results of a new study reveal that baboons have the ability to discern real English words from fake words just by looking at them, suggesting that some mental processing involved in reading evolved separately from the specialized language centers that are unique to the human brain, scientists reported on Thursday. Researchers at Aix-Marseille University in France, led by Jonathan Grainger, said their findings suggest that reading is based on simple...

Researchers Find Link Between Social Status, Immunity in Monkeys
2012-04-10 04:26:18

Changes in a female monkey's social status lead to changes in her immune system, and researchers writing in this week's edition of the Proceedings of the National Academy of Sciences (PNAS) Early Edition suggest that the findings may be applicable to humans as well. The research, which was led by Jenny Tung, currently a visiting assistant professor in Duke University's evolutionary anthropology department and a postdoctoral researcher at the University of Chicago at the time of the study,...

2012-03-22 09:35:05

Both human infants and baboons have a stronger preference for using their right hand to gesture than for a simple grasping task, supporting the hypothesis that language development, which is lateralized in the left part of the human brain, is based on a common gestural communication system. The results are reported in the Mar. 21 issue of the open access journal PLoS ONE. The researchers, led by Helene Meunier of the University of Strasbourg in France, found that hand preference of both...

Endangered African Monkey's DNA Suggests Troubles From Warming Climate
2012-03-01 04:47:35

University of Oregon scientist says drill face increasing threats from both climate change and hunters A rare and endangered monkey in an African equatorial rainforest is providing a look into our climatic future through its DNA. Its genes show that wild drills (Mandrillus leucophaeus), already an overhunted species, may see a dramatic population decline if the forest dries out and vegetation becomes sparser amid warming temperatures, researchers report. Looking for clues amid 2,076...

'Extinct' Monkey Found In Borneo
2012-01-20 12:52:13

[ Watch the Video ] Scientists report that they have rediscovered a species of primate in Borneo that was believed to be extinct or on the verge of extinction. The team has confirmed that Miller's Grizzled Langur, or Presbytis hosei canicrus, still exists and lives in an area where it was previously not known to inhabit. "Concern that the species may have gone extinct was first raised in 2004, and a search for the monkey during another expedition in 2008 supported the assertion that...


Latest Old World monkeys Reference Libraries

Sooty Mangabey, Cercocebus atys
2012-06-28 20:49:18

The sooty mangabey (Cercocebus atys) is an Old World Monkey that can be found throughout the area stretching from Senegal to eastern Ghana. Its other common names include the white-naped mangabey, the white-crowned mangabey, and the white-collared mangabey, which causes some confusion with the collared mangabey. There are currently two recognized subspecies of this mangabey, although they can be considered distinct species. The sooty mangabey resides in forests within its range, preferring...

Campbell’s Mona Monkey, Cercopithecus campbelli
2012-06-28 20:01:58

Campbell’s mona monkey (Cercopithecus campbelli) is a primate that can be found in many areas including the Ivory Coast, Ghana, Senegal, and Liberia. Its other common names include Campbell’s monkey and Campbell’s guenon. In 2009, studies revealed that this monkey might have advanced communication skills. It previously held Lowe’s mona monkey as a subspecies. Campbell’s mona monkey appears on the IUCN Red List with a conservation status of “Least Concern”. Image Caption:...

White-throated Guenon, Cercopithecus erythrogaster
2012-06-27 21:56:25

The white-throated guenon (Cercopithecus erythrogaster) is also known as the red-bellied guenon or the red-bellied monkey. It can be found in Benin and Nigeria, in habitats including rainforests and tropical areas. It holds the two subspecies known as the red-bellied guenon and the Nigerian white-throated guenon. The white-throated guenon can be found in small groups of up to five monkeys, although larger groups of up to thirty have been reported, as well as solitary males. It is an...

King Colobus, Colobus polykomos
2012-06-27 21:41:36

The king colobus (Colobus polykomos) is an Old World Monkey that can be found in Africa. Is range stretches from Gambia to Côte d'Ivoire. It is also known as the western black-and-white colobus and can be distinguished from other members of the Colobus geuns by looking at the location of the white within its long fur. The king colobus will form small groups that contain up to four females, three males, and their young. These groups tend to stay away from each other and form territories by...

Western Red Colobus, Procolobus badius
2012-06-21 13:40:23

The western red colobus (Procolobus badius) is an Old World monkey that is native to Africa. Its range includes the forests of Ghana to Senegal. It was previously though that this species held all other red colobuses, although it still holds three subspecies. In 1994, western red colobuses that were eaten by common chimpanzees and other species contracted Ebola from the infected individuals. The western red colobus has been given a conservation status of “Endangered” on the IUCN Red List....

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