Latest Rhesus Macaque Stories
Infant rhesus monkeys receiving different diets early in life develop distinct immune systems that persist months after weaning.
Involved in child birth and the production of breast milk, oxytocin is a hormone produced in the pituitary gland. A new study published in the Proceedings of the National Academy of Sciences has found that this hormone also promotes social behavior in infant rhesus monkeys.
Impulsive monkeys were more likely to accept delayed gratification after being given a dose of methylphenidate, the active ingredient of the drug Ritalin, according to new research.
Neuroscientists from Brazil and Japan have found new evidence in support of a theory that that human ancestors developed high-quality vision as a defense mechanism against the threat of snakes.
Tiny silicon crystals caused no health problems in monkeys three months after large doses were injected, marking a step forward in the quest to bring such materials into clinics as biomedical imaging agents, according to a new study.
Researchers have discovered a pair of functional networks in the human cerebral cortex that are not present in the brains of rhesus monkeys, leading them to theorize that the networks were added during the evolution from ancient primates to the modern day homo sapiens.
New research published in BMC Genetics shows that the rhesus macaque has three times as much genetic variation than humans.
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.
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.
Males of the world, fear not -- researchers have determined that the chromosome which determines maleness is not shrinking after all, and concerns that the gender could be headed for extinction are apparently unfounded.
The Pagai Island Macaque (Macaca pagensis), known also as the Pagai Macaque or Bokkoi, is an Old World monkey that is native to the Mentawai Islands off of the west coast of Sumatra. It is classified as Critically Endangered under the IUCN Red List because of its ever-shrinking habitat. It previously included the overall darker M. siberu as a subspecies, but this agreement is polyphyletic, leading to the two being classified as a separate species. Both were previously thought to be subspecies...
The Celebes Crested Macaque (Macaca nigra), known also as the Crested Black Macaque, Sulawesi Crested Macaque, or the Black Ape, is al Old World Monkey that resides in the northeast of the Indonesian island of Sulawesi as well as on smaller neighboring islands. The skin and the hairless face is, with the exception of some white hair on the shoulder range, entirely jet black colored. The long muzzle with high cheeks and the long tuft of hair, or crest, at the top side of the head are...
The rhesus macaque (Macaca mulatta), often called the rhesus monkey, is one of the best-known species of Old World monkeys. It is a typical macaque, common throughout Afghanistan to northern India and southern China. Adult male rhesus macaques measure approximately 20.87 in (53 cm) on average and weigh an average of 16.98 lb (7.7 kg). Females are smaller, averaging 18.5 in (47 cm) long and 11.68 lb (5.3 kg) in weight. They are brown or grey in color and have pink faces that are typically...
The Celebes crested macaque (Macaca nigra), also known as the crested black macaque, Sulawesi crested macaque, or the black "Ape", is an Old World monkey. It lives in the northeast of the Indonesian island of Sulawesi (Celebes) as well as on smaller neighboring islands. Its skin and hairless face is entirely black. This is with the exception of some white hair in the shoulder range. The long muzzle with high cheeks and the long hair tuft at the topside of the head are remarkable. The tail...
- A transitional zone between two communities containing the characteristic species of each.