Primates is an order of mammals, which is further divided into the strepsirrhines, which include lemurs, galagos, and lorisids; and the haplorhines, which include tarsiers; and the simians, which include monkeys and apes. Primates arose 85–55 million years ago first from small terrestrial mammals, which adapted for life in tropical forests: many primate characteristics represent adaptations to the challenging environment among tree tops, including large brain sizes, binocular vision, color vision, vocalizations, shoulder girdles allowing a large degree of movement in the upper limbs, and opposable thumbs that enable better grasping and dexterity. Primates range in size from Madame Berthe's mouse lemur, which weighs 30 g (1 oz), to the eastern gorilla, weighing over 200 kg (440 lb). There are 376–524 species of living primates, depending on which classification is used. New primate species continue to be discovered: over 25 species were described in the 2000s, 36 in the 2010s, and six in the 2020s.
Primatology is the scientific study of non-human primates. It is a diverse discipline at the boundary between mammalogy and anthropology, and researchers can be found in academic departments of anatomy, anthropology, biology, medicine, psychology, veterinary sciences and zoology, as well as in animal sanctuaries, biomedical research facilities, museums and zoos. Primatologists study both living and extinct primates in their natural habitats and in laboratories by conducting field studies and experiments in order to understand aspects of their evolution and behavior.
Irven DeVore was an anthropologist and evolutionary biologist, and Curator of Primatology at Harvard University's Peabody Museum of Archaeology and Ethnology. He headed Harvard's Department of Anthropology from 1987 to 1992. He taught generations of students at Harvard both at the undergraduate and graduate levels. He mentored many young scientists who went on to prominence in anthropology and behavioral biology, including Richard Lee, Robert Trivers, Sarah Hrdy, Peter Ellison, Barbara Smuts, Henry Harpending, Marjorie Shostak, Robert Bailey, Leda Cosmides, John Tooby, Richard Wrangham and Terrence Deacon.
Animal languages are forms of communication between animals that show similarities to human language. Animals communicate through a variety of signs, such as sounds and movements. Signing among animals may be considered a form of language if the inventory of signs is large enough. The signs are relatively arbitrary, and the animals seem to produce them with a degree of volition.
Animal communication is the transfer of information from one or a group of animals to one or more other animals that affects the current or future behavior of the receivers. Information may be sent intentionally, as in a courtship display, or unintentionally, as in the transfer of scent from the predator to prey with kairomones. Information may be transferred to an "audience" of several receivers. Animal communication is a rapidly growing area of study in disciplines including animal behavior, sociology, neurology, and animal cognition. Many aspects of animal behavior, such as symbolic name use, emotional expression, learning, and sexual behavior, are being understood in new ways.
The vervet monkey, or simply vervet, is an Old World monkey of the family Cercopithecidae native to Africa. The term "vervet" is also used to refer to all the members of the genus Chlorocebus. The five distinct subspecies can be found mostly throughout Southern Africa, as well as some of the eastern countries. These mostly herbivorous monkeys have black faces and grey body hair color, ranging in body length from about 40 cm (16 in) for females, to about 50 cm (20 in) for males.
Robin Ian MacDonald Dunbar is a British biological anthropologist, evolutionary psychologist, and specialist in primate behaviour. Dunbar is professor emeritus of evolutionary psychology of the Social and Evolutionary Neuroscience Research Group in the Department of Experimental Psychology at the University of Oxford. He is best known for formulating Dunbar's number, a measurement of the "cognitive limit to the number of individuals with whom any one person can maintain stable relationships".
The chacma baboon, also known as the Cape baboon, is, like all other baboons, from the Old World monkey family. It is one of the largest of all monkeys. Located primarily in southern Africa, the chacma baboon has a wide variety of social behaviours, including a dominance hierarchy, collective foraging, adoption of young by females, and friendship pairings. These behaviors form parts of a complex evolutionary ecology. In general, the species is not threatened, but human population pressure has increased contact between humans and baboons. Hunting, trapping, and accidents kill or remove many baboons from the wild, thereby reducing baboon numbers and disrupting their social structure.
Social grooming is a behavior in which social animals, including humans, clean or maintain one another's bodies or appearances. A related term, allogrooming, indicates social grooming between members of the same species. Grooming is a major social activity and a means by which animals who live in close proximity may bond, reinforce social structures and family links, and build companionship. Social grooming is also used as a means of conflict resolution, maternal behavior, and reconciliation in some species. Mutual grooming typically describes the act of grooming between two individuals, often as a part of social grooming, pair bonding, or a precoital activity.
In animal communication, an alarm signal is an antipredator adaptation in the form of signals emitted by social animals in response to danger. Many primates and birds have elaborate alarm calls for warning conspecifics of approaching predators. For example, the alarm call of the blackbird is a familiar sound in many gardens. Other animals, like fish and insects, may use non-auditory signals, such as chemical messages. Visual signs such as the white tail flashes of many deer have been suggested as alarm signals; they are less likely to be received by conspecifics, so have tended to be treated as a signal to the predator instead.
Anne C. Zeller is a physical anthropologist who specializes in the study of primates. She received her M.A.(1971) and Ph.D (1978) from the University of Toronto.
Primate cognition is the study of the intellectual and behavioral skills of non-human primates, particularly in the fields of psychology, behavioral biology, primatology, and anthropology.
Barbara Boardman Smuts is an American anthropologist and psychologist noted for her research into baboons, dolphins, and chimpanzees, and a Professor Emeritus at University of Michigan, Ann Arbor.
Baboons are primates comprising the genus Papio, one of the 23 genera of Old World monkeys, in the family Cercopithecidae. There are six species of baboon: the hamadryas baboon, the Guinea baboon, the olive baboon, the yellow baboon, the Kinda baboon and the chacma baboon. Each species is native to one of six areas of Africa and the hamadryas baboon is also native to part of the Arabian Peninsula. Baboons are among the largest non-hominoid primates and have existed for at least two million years.
Dario Maestripieri is an Italian behavioral biologist who is known for his research and writings about biological aspects of behavior in nonhuman primates and humans. He is currently a professor of Comparative Human Development, Evolutionary Biology, and Neurobiology at The University of Chicago.
Peter Robert Marler ForMemRS was a British-born American ethologist and zoosemiotician known for his research on animal sign communication and the science of bird song. A 1964 Guggenheim Fellow, he was emeritus professor of neurobiology, physiology and ethology at the University of California, Davis.
Michael J. Owren was a Norwegian born American psychologist who contributed to the understanding of animal communication, the evolution of language, emotional communication, and vocal acoustics. His work focused on vocal phenomena in animals and humans. He pioneered digital spectral analysis techniques, first developed in speech science, for use in studies of animal communication. He studied primate vocalizations in terms of acoustics and communicative functions.
Susan C. Alberts is an American primatologist, anthropologist, and biologist who is the current Chair of the Department of Evolutionary Anthropology at Duke University; previously, she served as a Bass fellow and the Robert F. Durden Professor of Biology at Duke. She currently co-directs the Amboseli Baboon Research Project with Jeanne Altmann of Princeton University. Her research broadly studies how animal behavior evolved in mammals, with a specific focus on the social behavior, demography, and genetics of the yellow baboon, although some of her work has included the African elephant. She was elected a fellow of the American Academy of Arts and Sciences in 2014, won the Cozzarelli Prize of the National Academy of Sciences in 2016, and was elected a fellow of the National Academy of Sciences in 2019.
Dorothy Leavitt Cheney was an American scientist who studied the social behavior, communication, and cognition of wild primates in their natural habitat. She was Professor of Biology at the University of Pennsylvania and a member of both the US National Academy of Sciences and the American Academy of Arts and Sciences.
Lynne A. Isbell is an American ethologist and primatologist, professor of anthropology at the University of California, Davis.
